drm/nouveau/fb: restore init() for ramgp102

init() was removed from ramgp102 when reworking the memory detection, as
it was thought that the code was only necessary when the driver performs
mclk changes, which nouveau doesn't support on pascal.

However, it turns out that we still need to execute this on some GPUs to
restore settings after DEVINIT, so revert to the original behaviour.

v2: fix tags in commit message, cc stable

Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/319
Fixes: 2c0c15a22fa0 ("drm/nouveau/fb/gp102-ga100: switch to simpler vram size detection method")
Cc: stable@vger.kernel.org # 6.6+
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240904232418.8590-1-bskeggs@nvidia.com

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h
index 50f0c1914f58e8352f8db2aca1ddf9fae0a48e27..4c3f74396579875db88b35584c622329b678818c 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h
@@ -46,6 +46,8 @@ u32 gm107_ram_probe_fbp(const struct nvkm_ram_func *,
 u32 gm200_ram_probe_fbp_amount(const struct nvkm_ram_func *, u32,
                               struct nvkm_device *, int, int *);
 
+int gp100_ram_init(struct nvkm_ram *);
+
 /* RAM type-specific MR calculation routines */
 int nvkm_sddr2_calc(struct nvkm_ram *);
 int nvkm_sddr3_calc(struct nvkm_ram *);

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c
index 378f6fb70990778f88ba0a76e09f1114a294e97c..8987a21e81d17425ce6cfccdbda9f9a36c6388bb 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c
@@ -27,7 +27,7 @@
 #include <subdev/bios/init.h>
 #include <subdev/bios/rammap.h>
 
-static int
+int
 gp100_ram_init(struct nvkm_ram *ram)
 {
        struct nvkm_subdev *subdev = &ram->fb->subdev;

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
index 8550f5e473474bb3d8d224e2dccf3e37efc5a0f8..b6b6ee59019d705b830dbc9d779f9be1eda12b70 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
@@ -5,6 +5,7 @@
 
 static const struct nvkm_ram_func
 gp102_ram = {
+       .init = gp100_ram_init,
 };
 
 int