1 // SPDX-License-Identifier: GPL-2.0 2 // SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 3 4 //! Blackwell GB10x framebuffer HAL. 5 6 use kernel::{ 7 prelude::*, 8 ptr::{ 9 const_align_up, 10 Alignment, // 11 }, 12 sizes::*, // 13 }; 14 15 use crate::{ 16 driver::Bar0, 17 fb::hal::FbHal, 18 num::usize_into_u32, // 19 }; 20 21 struct Gb100; 22 23 pub(super) const fn pmu_reserved_size_gb100() -> u32 { 24 usize_into_u32::<{ const_align_up(SZ_8M + SZ_16M + SZ_4K, Alignment::new::<SZ_128K>()).unwrap() }>( 25 ) 26 } 27 28 impl FbHal for Gb100 { 29 fn read_sysmem_flush_page(&self, bar: &Bar0) -> u64 { 30 super::ga100::read_sysmem_flush_page_ga100(bar) 31 } 32 33 fn write_sysmem_flush_page(&self, bar: &Bar0, addr: u64) -> Result { 34 super::ga100::write_sysmem_flush_page_ga100(bar, addr); 35 36 Ok(()) 37 } 38 39 fn supports_display(&self, bar: &Bar0) -> bool { 40 super::ga100::display_enabled_ga100(bar) 41 } 42 43 fn vidmem_size(&self, bar: &Bar0) -> u64 { 44 super::ga102::vidmem_size_ga102(bar) 45 } 46 47 fn pmu_reserved_size(&self) -> u32 { 48 pmu_reserved_size_gb100() 49 } 50 51 fn non_wpr_heap_size(&self) -> u32 { 52 // Non-WPR heap for GB10x (see Open RM: kgspGetNonWprHeapSize, GB100/GB102). 53 u32::SZ_2M 54 } 55 56 fn frts_size(&self) -> u64 { 57 super::tu102::frts_size_tu102() 58 } 59 } 60 61 const GB100: Gb100 = Gb100; 62 pub(super) const GB100_HAL: &dyn FbHal = &GB100; 63