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/gb100/dev_hshub_base.h> 9 10 static void 11 gb100_fb_sysmem_flush_page_init(struct nvkm_fb *fb) 12 { 13 const u32 addr_hi = upper_32_bits(fb->sysmem.flush_page_addr); 14 const u32 addr_lo = lower_32_bits(fb->sysmem.flush_page_addr); 15 const u32 hshub = DRF_LO(NV_PFB_HSHUB0); 16 struct nvkm_device *device = fb->subdev.device; 17 18 nvkm_wr32(device, hshub + NV_PFB_HSHUB_PCIE_FLUSH_SYSMEM_ADDR_HI, addr_hi); 19 nvkm_wr32(device, hshub + NV_PFB_HSHUB_PCIE_FLUSH_SYSMEM_ADDR_LO, addr_lo); 20 nvkm_wr32(device, hshub + NV_PFB_HSHUB_EG_PCIE_FLUSH_SYSMEM_ADDR_HI, addr_hi); 21 nvkm_wr32(device, hshub + NV_PFB_HSHUB_EG_PCIE_FLUSH_SYSMEM_ADDR_LO, addr_lo); 22 } 23 24 static const struct nvkm_fb_func 25 gb100_fb = { 26 .sysmem.flush_page_init = gb100_fb_sysmem_flush_page_init, 27 .vidmem.size = ga102_fb_vidmem_size, 28 }; 29 30 int 31 gb100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 32 { 33 return r535_fb_new(&gb100_fb, device, type, inst, pfb); 34 } 35