1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gb100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gb100.c
new file mode 100644
index 000000000000..1c78c8853617
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gb100.c
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+ */
+#include "priv.h"
+
+#include <nvhw/drf.h>
+#include <nvhw/ref/gb100/dev_hshub_base.h>
+
+static void
+gb100_fb_sysmem_flush_page_init(struct nvkm_fb *fb)
+{
+	const u32 addr_hi = upper_32_bits(fb->sysmem.flush_page_addr);
+	const u32 addr_lo = lower_32_bits(fb->sysmem.flush_page_addr);
+	const u32 hshub = DRF_LO(NV_PFB_HSHUB0);
+	struct nvkm_device *device = fb->subdev.device;
+
+	nvkm_wr32(device, hshub + NV_PFB_HSHUB_PCIE_FLUSH_SYSMEM_ADDR_HI, addr_hi);
+	nvkm_wr32(device, hshub + NV_PFB_HSHUB_PCIE_FLUSH_SYSMEM_ADDR_LO, addr_lo);
+	nvkm_wr32(device, hshub + NV_PFB_HSHUB_EG_PCIE_FLUSH_SYSMEM_ADDR_HI, addr_hi);
+	nvkm_wr32(device, hshub + NV_PFB_HSHUB_EG_PCIE_FLUSH_SYSMEM_ADDR_LO, addr_lo);
+}
+
+static const struct nvkm_fb_func
+gb100_fb = {
+	.sysmem.flush_page_init = gb100_fb_sysmem_flush_page_init,
+	.vidmem.size = ga102_fb_vidmem_size,
+};
+
+int
+gb100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
+{
+	return r535_fb_new(&gb100_fb, device, type, inst, pfb);
+}