From: Dave Airlie <airlied@gmail.com>
Date: Mon, 8 Apr 2024 06:42:43 +0000 (+1000)
Subject: nouveau: fix devinit paths to only handle display on GSP.
X-Git-Tag: v6.9-rc4-pxa1908~65^2
X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=718c4fb221dbeff9072810841b949413c5ffc345;p=linux.git

nouveau: fix devinit paths to only handle display on GSP.

This reverts:
nouveau/gsp: don't check devinit disable on GSP.
and applies a further fix.

It turns out the open gpu driver, checks this register,
but only for display.

Match that behaviour and in the turing path only disable
the display block. (ampere already only does displays).

Fixes: 5d4e8ae6e57b ("nouveau/gsp: don't check devinit disable on GSP.")
Reviewed-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240408064243.2219527-1-airlied@gmail.com
---

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c
index 7bcbc4895ec2..271bfa038f5b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c
@@ -25,6 +25,7 @@
 
 #include <subdev/bios.h>
 #include <subdev/bios/init.h>
+#include <subdev/gsp.h>
 
 void
 gm107_devinit_disable(struct nvkm_devinit *init)
@@ -33,10 +34,13 @@ gm107_devinit_disable(struct nvkm_devinit *init)
 	u32 r021c00 = nvkm_rd32(device, 0x021c00);
 	u32 r021c04 = nvkm_rd32(device, 0x021c04);
 
-	if (r021c00 & 0x00000001)
-		nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0);
-	if (r021c00 & 0x00000004)
-		nvkm_subdev_disable(device, NVKM_ENGINE_CE, 2);
+	/* gsp only wants to enable/disable display */
+	if (!nvkm_gsp_rm(device->gsp)) {
+		if (r021c00 & 0x00000001)
+			nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0);
+		if (r021c00 & 0x00000004)
+			nvkm_subdev_disable(device, NVKM_ENGINE_CE, 2);
+	}
 	if (r021c04 & 0x00000001)
 		nvkm_subdev_disable(device, NVKM_ENGINE_DISP, 0);
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/r535.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/r535.c
index 11b4c9c274a1..666eb93b1742 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/r535.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/r535.c
@@ -41,6 +41,7 @@ r535_devinit_new(const struct nvkm_devinit_func *hw,
 
 	rm->dtor = r535_devinit_dtor;
 	rm->post = hw->post;
+	rm->disable = hw->disable;
 
 	ret = nv50_devinit_new_(rm, device, type, inst, pdevinit);
 	if (ret)