From: jsg <jsg@openbsd.org>
Date: Wed, 13 Jul 2022 03:32:50 +0000 (+0000)
Subject: drm/i915: Disable bonding on gen12+ platforms
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=9f12664710999151e4e0c15e6e2f37cd07d9d714;p=openbsd

drm/i915: Disable bonding on gen12+ platforms

From Matthew Brost
d839d15b50743164d7ad95f436ea284a2946c179 in linux 5.15.y/5.15.54
ce7e75c7ef1bf8ea3d947da8c674d2f40fd7d734 in mainline linux
---

diff --git a/sys/dev/pci/drm/i915/gem/i915_gem_context.c b/sys/dev/pci/drm/i915/gem/i915_gem_context.c
index 3e770a4f5fb..906a4d40ae6 100644
--- a/sys/dev/pci/drm/i915/gem/i915_gem_context.c
+++ b/sys/dev/pci/drm/i915/gem/i915_gem_context.c
@@ -450,6 +450,13 @@ set_proto_ctx_engines_bond(struct i915_user_extension __user *base, void *data)
 	u16 idx, num_bonds;
 	int err, n;
 
+	if (GRAPHICS_VER(i915) >= 12 && !IS_TIGERLAKE(i915) &&
+	    !IS_ROCKETLAKE(i915) && !IS_ALDERLAKE_S(i915)) {
+		drm_dbg(&i915->drm,
+			"Bonding on gen12+ aside from TGL, RKL, and ADL_S not supported\n");
+		return -ENODEV;
+	}
+
 	if (get_user(idx, &ext->virtual_index))
 		return -EFAULT;