From ab016914984e2a7405756dfc8a8e4cb54a4c1b48 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 20 Aug 2019 21:54:51 +0200 Subject: [PATCH] drm/i915: disable set/get_tiling ioctl on gen12+ MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The cpu (de)tiler hw is gone, this stopped being useful. Plus it never supported any of the fancy new tiling formats, which means userspace also stopped using the magic side-channel this provides. This would totally break a lot of the igts, but they're already broken for the same reasons as userspace on gen12 would be. v2: Look at ggtt->num_fences instead, that also avoids the need for a comment (Chris). This also means that gen12 support really needs to make sure num_fences is set to 0. There is a patch for that, but it checks for HAS_MAPPABLE_APERTURE, which I'm not sure is the right thing really. Adding relevant people. Cc: Daniele Ceraolo Spurio Cc: Stuart Summers Cc: Matthew Auld Cc: Kenneth Graunke Cc: Jason Ekstrand Cc: Chris Wilson Cc: Lucas De Marchi Signed-off-by: Daniel Vetter Signed-off-by: Daniel Vetter Signed-off-by: José Roberto de Souza Reviewed-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20190820195451.15671-1-daniel.vetter@ffwll.ch --- drivers/gpu/drm/i915/gem/i915_gem_tiling.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c index ca0c2f4..e5d1ae8 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c @@ -313,10 +313,14 @@ int i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { + struct drm_i915_private *dev_priv = to_i915(dev); struct drm_i915_gem_set_tiling *args = data; struct drm_i915_gem_object *obj; int err; + if (!dev_priv->ggtt.num_fences) + return -EOPNOTSUPP; + obj = i915_gem_object_lookup(file, args->handle); if (!obj) return -ENOENT; @@ -402,6 +406,9 @@ i915_gem_get_tiling_ioctl(struct drm_device *dev, void *data, struct drm_i915_gem_object *obj; int err = -ENOENT; + if (!dev_priv->ggtt.num_fences) + return -EOPNOTSUPP; + rcu_read_lock(); obj = i915_gem_object_lookup_rcu(file, args->handle); if (obj) { -- 2.7.4