1 /* SPDX-License-Identifier: MIT 2 * 3 * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved. 4 */ 5 #include "priv.h" 6 7 #include <nvhw/drf.h> 8 #include <nvhw/ref/gb10b/dev_fbhub.h> 9 10 static void 11 gb202_fb_sysmem_flush_page_init(struct nvkm_fb *fb) 12 { 13 struct nvkm_device *device = fb->subdev.device; 14 const u64 addr = fb->sysmem.flush_page_addr; 15 16 // Ensure that the address is within hardware limits 17 WARN_ON(fb->sysmem.flush_page_addr > DMA_BIT_MASK(52)); 18 19 nvkm_wr32(device, NV_PFB_FBHUB0_PCIE_FLUSH_SYSMEM_ADDR_HI, upper_32_bits(addr)); 20 nvkm_wr32(device, NV_PFB_FBHUB0_PCIE_FLUSH_SYSMEM_ADDR_LO, lower_32_bits(addr)); 21 } 22 23 static const struct nvkm_fb_func 24 gb202_fb = { 25 .sysmem.flush_page_init = gb202_fb_sysmem_flush_page_init, 26 .vidmem.size = ga102_fb_vidmem_size, 27 }; 28 29 int 30 gb202_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 31 { 32 return r535_fb_new(&gb202_fb, device, type, inst, pfb); 33 } 34