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
gb100_fb_sysmem_flush_page_init(struct nvkm_fb * fb)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
gb100_fb_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_fb ** pfb)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