1 // SPDX-License-Identifier: GPL-2.0 2 // SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 3 4 //! Blackwell GB20x framebuffer HAL. 5 6 use kernel::{ 7 prelude::*, 8 sizes::SizeConstants, // 9 }; 10 11 use crate::{ 12 driver::Bar0, 13 fb::hal::FbHal, // 14 }; 15 16 struct Gb202; 17 18 impl FbHal for Gb202 { 19 fn read_sysmem_flush_page(&self, bar: &Bar0) -> u64 { 20 super::ga100::read_sysmem_flush_page_ga100(bar) 21 } 22 23 fn write_sysmem_flush_page(&self, bar: &Bar0, addr: u64) -> Result { 24 super::ga100::write_sysmem_flush_page_ga100(bar, addr); 25 26 Ok(()) 27 } 28 29 fn supports_display(&self, bar: &Bar0) -> bool { 30 super::ga100::display_enabled_ga100(bar) 31 } 32 33 fn vidmem_size(&self, bar: &Bar0) -> u64 { 34 super::ga102::vidmem_size_ga102(bar) 35 } 36 37 fn pmu_reserved_size(&self) -> u32 { 38 super::gb100::pmu_reserved_size_gb100() 39 } 40 41 fn non_wpr_heap_size(&self) -> u32 { 42 // Non-WPR heap for GB20x (see Open RM: kgspGetNonWprHeapSize, GB202+). 43 u32::SZ_2M + u32::SZ_128K 44 } 45 46 fn frts_size(&self) -> u64 { 47 super::tu102::frts_size_tu102() 48 } 49 } 50 51 const GB202: Gb202 = Gb202; 52 pub(super) const GB202_HAL: &dyn FbHal = &GB202; 53