drm/nouveau/fb/gp102-: cache scrubber binary on first load

During system shutdown nouveau might not be able to request firmware from
Userspace, which then leads to a regression preventing the system from
shutting down.

Cache the scrubber binary for this case.

Fixes: 0e44c21 ("drm/nouveau/flcn: new code to load+boot simple HS FWs (VPR scrubber)")
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv7Uf5=K44y8YLsiy0aMnc1zvGEQdeDe7RQF=AV+fxxzuQ@mail.gmail.com

Author: Ben Skeggs

drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h

@@ -2,6 +2,7 @@
 #ifndef __NVKM_FB_H__
 #define __NVKM_FB_H__
 #include <core/subdev.h>
+#include <core/falcon.h>
 #include <core/mm.h>
 
 /* memory type/access flags, do not match hardware values */
@@ -33,7 +34,7 @@ struct nvkm_fb {
 	const struct nvkm_fb_func *func;
 	struct nvkm_subdev subdev;
 
-	struct nvkm_blob vpr_scrubber;
+	struct nvkm_falcon_fw vpr_scrubber;
 
 	struct {
 		struct page *flush_page;

drivers/gpu/drm/nouveau/nvkm/subdev/fb/base.c

@@ -143,14 +143,18 @@ nvkm_fb_mem_unlock(struct nvkm_fb *fb)
 	if (!fb->func->vpr.scrub_required)
 		return 0;
 
+	ret = nvkm_subdev_oneinit(subdev);
+	if (ret)
+		return ret;
+
 	if (!fb->func->vpr.scrub_required(fb)) {
 		nvkm_debug(subdev, "VPR not locked\n");
 		return 0;
 	}
 
 	nvkm_debug(subdev, "VPR locked, running scrubber binary\n");
 
-	if (!fb->vpr_scrubber.size) {
+	if (!fb->vpr_scrubber.fw.img) {
 		nvkm_warn(subdev, "VPR locked, but no scrubber binary!\n");
 		return 0;
 	}
@@ -229,7 +233,7 @@ nvkm_fb_dtor(struct nvkm_subdev *subdev)
 
 	nvkm_ram_del(&fb->ram);
 
-	nvkm_blob_dtor(&fb->vpr_scrubber);
+	nvkm_falcon_fw_dtor(&fb->vpr_scrubber);
 
 	if (fb->sysmem.flush_page) {
 		dma_unmap_page(subdev->device->dev, fb->sysmem.flush_page_addr,

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ga100.c

@@ -37,5 +37,5 @@ ga100_fb = {
 int
 ga100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
 {
-	return gp102_fb_new_(&ga100_fb, device, type, inst, pfb);
+	return gf100_fb_new_(&ga100_fb, device, type, inst, pfb);
 }

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ga102.c

@@ -25,39 +25,34 @@
 #include <engine/nvdec.h>
 
 static int
-ga102_fb_vpr_scrub(struct nvkm_fb *fb)
+ga102_fb_oneinit(struct nvkm_fb *fb)
 {
-	struct nvkm_falcon_fw fw = {};
-	int ret;
+	struct nvkm_subdev *subdev = &fb->subdev;
 
-	ret = nvkm_falcon_fw_ctor_hs_v2(&ga102_flcn_fw, "mem-unlock", &fb->subdev, "nvdec/scrubber",
-					0, &fb->subdev.device->nvdec[0]->falcon, &fw);
-	if (ret)
-		return ret;
+	nvkm_falcon_fw_ctor_hs_v2(&ga102_flcn_fw, "mem-unlock", subdev, "nvdec/scrubber",
+				  0, &subdev->device->nvdec[0]->falcon, &fb->vpr_scrubber);
 
-	ret = nvkm_falcon_fw_boot(&fw, &fb->subdev, true, NULL, NULL, 0, 0);
-	nvkm_falcon_fw_dtor(&fw);
-	return ret;
+	return gf100_fb_oneinit(fb);
 }
 
 static const struct nvkm_fb_func
 ga102_fb = {
 	.dtor = gf100_fb_dtor,
-	.oneinit = gf100_fb_oneinit,
+	.oneinit = ga102_fb_oneinit,
 	.init = gm200_fb_init,
 	.init_page = gv100_fb_init_page,
 	.init_unkn = gp100_fb_init_unkn,
 	.sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
 	.ram_new = ga102_ram_new,
 	.default_bigpage = 16,
 	.vpr.scrub_required = tu102_fb_vpr_scrub_required,
-	.vpr.scrub = ga102_fb_vpr_scrub,
+	.vpr.scrub = gp102_fb_vpr_scrub,
 };
 
 int
 ga102_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
 {
-	return gp102_fb_new_(&ga102_fb, device, type, inst, pfb);
+	return gf100_fb_new_(&ga102_fb, device, type, inst, pfb);
 }
 
 MODULE_FIRMWARE("nvidia/ga102/nvdec/scrubber.bin");

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c

@@ -29,18 +29,7 @@
 int
 gp102_fb_vpr_scrub(struct nvkm_fb *fb)
 {
-	struct nvkm_subdev *subdev = &fb->subdev;
-	struct nvkm_falcon_fw fw = {};
-	int ret;
-
-	ret = nvkm_falcon_fw_ctor_hs(&gm200_flcn_fw, "mem-unlock", subdev, NULL,
-				     "nvdec/scrubber", 0, &subdev->device->nvdec[0]->falcon, &fw);
-	if (ret)
-		return ret;
-
-	ret = nvkm_falcon_fw_boot(&fw, subdev, true, NULL, NULL, 0, 0x00000000);
-	nvkm_falcon_fw_dtor(&fw);
-	return ret;
+	return nvkm_falcon_fw_boot(&fb->vpr_scrubber, &fb->subdev, true, NULL, NULL, 0, 0x00000000);
 }
 
 bool
@@ -51,10 +40,21 @@ gp102_fb_vpr_scrub_required(struct nvkm_fb *fb)
 	return (nvkm_rd32(device, 0x100cd0) & 0x00000010) != 0;
 }
 
+int
+gp102_fb_oneinit(struct nvkm_fb *fb)
+{
+	struct nvkm_subdev *subdev = &fb->subdev;
+
+	nvkm_falcon_fw_ctor_hs(&gm200_flcn_fw, "mem-unlock", subdev, NULL, "nvdec/scrubber",
+			       0, &subdev->device->nvdec[0]->falcon, &fb->vpr_scrubber);
+
+	return gf100_fb_oneinit(fb);
+}
+
 static const struct nvkm_fb_func
 gp102_fb = {
 	.dtor = gf100_fb_dtor,
-	.oneinit = gf100_fb_oneinit,
+	.oneinit = gp102_fb_oneinit,
 	.init = gm200_fb_init,
 	.init_remapper = gp100_fb_init_remapper,
 	.init_page = gm200_fb_init_page,
@@ -64,23 +64,10 @@ gp102_fb = {
 	.ram_new = gp100_ram_new,
 };
 
-int
-gp102_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
-	      enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
-{
-	int ret = gf100_fb_new_(func, device, type, inst, pfb);
-	if (ret)
-		return ret;
-
-	nvkm_firmware_load_blob(&(*pfb)->subdev, "nvdec/scrubber", "", 0,
-				&(*pfb)->vpr_scrubber);
-	return 0;
-}
-
 int
 gp102_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
 {
-	return gp102_fb_new_(&gp102_fb, device, type, inst, pfb);
+	return gf100_fb_new_(&gp102_fb, device, type, inst, pfb);
 }
 
 MODULE_FIRMWARE("nvidia/gp102/nvdec/scrubber.bin");

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gv100.c

@@ -31,7 +31,7 @@ gv100_fb_init_page(struct nvkm_fb *fb)
 static const struct nvkm_fb_func
 gv100_fb = {
 	.dtor = gf100_fb_dtor,
-	.oneinit = gf100_fb_oneinit,
+	.oneinit = gp102_fb_oneinit,
 	.init = gm200_fb_init,
 	.init_page = gv100_fb_init_page,
 	.init_unkn = gp100_fb_init_unkn,
@@ -45,7 +45,7 @@ gv100_fb = {
 int
 gv100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
 {
-	return gp102_fb_new_(&gv100_fb, device, type, inst, pfb);
+	return gf100_fb_new_(&gv100_fb, device, type, inst, pfb);
 }
 
 MODULE_FIRMWARE("nvidia/gv100/nvdec/scrubber.bin");

drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h

@@ -83,8 +83,7 @@ int gm200_fb_init_page(struct nvkm_fb *);
 void gp100_fb_init_remapper(struct nvkm_fb *);
 void gp100_fb_init_unkn(struct nvkm_fb *);
 
-int gp102_fb_new_(const struct nvkm_fb_func *, struct nvkm_device *, enum nvkm_subdev_type, int,
-		  struct nvkm_fb **);
+int gp102_fb_oneinit(struct nvkm_fb *);
 bool gp102_fb_vpr_scrub_required(struct nvkm_fb *);
 int gp102_fb_vpr_scrub(struct nvkm_fb *);
 

drivers/gpu/drm/nouveau/nvkm/subdev/fb/tu102.c

@@ -31,7 +31,7 @@ tu102_fb_vpr_scrub_required(struct nvkm_fb *fb)
 static const struct nvkm_fb_func
 tu102_fb = {
 	.dtor = gf100_fb_dtor,
-	.oneinit = gf100_fb_oneinit,
+	.oneinit = gp102_fb_oneinit,
 	.init = gm200_fb_init,
 	.init_page = gv100_fb_init_page,
 	.init_unkn = gp100_fb_init_unkn,
@@ -45,7 +45,7 @@ tu102_fb = {
 int
 tu102_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
 {
-	return gp102_fb_new_(&tu102_fb, device, type, inst, pfb);
+	return gf100_fb_new_(&tu102_fb, device, type, inst, pfb);
 }
 
 MODULE_FIRMWARE("nvidia/tu102/nvdec/scrubber.bin");