drm/nouveau/acr: store a mask of LS falcons the HSFW can bootstrap

This will prevent reloading of HS FW where it's pointless, and bypass
hitting some timeouts.

Not a situation one should generally hit, but can occur with a messed
up firmware installation.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c
index e4866a0..51a669e 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c
@@ -141,12 +141,19 @@ nvkm_acr_bootstrap_falcons(struct nvkm_device *device, unsigned long mask)
        struct nvkm_acr *acr = device->acr;
        unsigned long id;
 
+       /* If there's no LS FW managing bootstrapping of other LS falcons,
+        * we depend on the HS firmware being able to do it instead.
+        */
        if (!acrflcn) {
-               int ret = nvkm_acr_reload(acr);
-               if (ret)
-                       return ret;
+               /* Which isn't possible everywhere... */
+               if ((mask & acr->func->bootstrap_falcons) == mask) {
+                       int ret = nvkm_acr_reload(acr);
+                       if (ret)
+                               return ret;
 
-               return acr->done ? 0 : -EINVAL;
+                       return acr->done ? 0 : -EINVAL;
+               }
+               return -ENOSYS;
        }
 
        if (acrflcn->func->bootstrap_multiple_falcons) {

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c
index 74ffcf1..cd41b2e 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c
@@ -446,6 +446,8 @@ gm200_acr_0 = {
        .wpr_patch = gm200_acr_wpr_patch,
        .wpr_check = gm200_acr_wpr_check,
        .init = gm200_acr_init,
+       .bootstrap_falcons = BIT_ULL(NVKM_ACR_LSF_FECS) |
+                            BIT_ULL(NVKM_ACR_LSF_GPCCS),
 };
 
 static int

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/priv.h
index 9c10879..d71af17 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/priv.h
@@ -28,6 +28,7 @@ struct nvkm_acr_func {
        void (*wpr_check)(struct nvkm_acr *, u64 *start, u64 *limit);
        int (*init)(struct nvkm_acr *);
        void (*fini)(struct nvkm_acr *);
+       u64 bootstrap_falcons;
 };
 
 extern const struct nvkm_acr_func gm200_acr;