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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Dec 2025 23:41:26.1528 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: db506103-56e1-4aba-2159-08de313324c4 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002636D.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7198 Add the basic HAL for recognizing Turing GPUs. This isn't enough to support booting GSP-RM on Turing, but it's a start. Note that GA100, which boots using the same method as Turing, is not supported yet. Signed-off-by: Timur Tabi --- drivers/gpu/nova-core/falcon/hal.rs | 6 +- drivers/gpu/nova-core/falcon/hal/tu102.rs | 74 +++++++++++++++++++++++ 2 files changed, 79 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/nova-core/falcon/hal/tu102.rs diff --git a/drivers/gpu/nova-core/falcon/hal.rs b/drivers/gpu/nova-core/falcon/hal.rs index c77a1568ea96..7a6610e9d0a8 100644 --- a/drivers/gpu/nova-core/falcon/hal.rs +++ b/drivers/gpu/nova-core/falcon/hal.rs @@ -13,6 +13,7 @@ }; mod ga102; +mod tu102; /// Hardware Abstraction Layer for Falcon cores. /// @@ -60,9 +61,12 @@ pub(super) fn falcon_hal( use Chipset::*; let hal = match chipset { + TU102 | TU104 | TU106 | TU116 | TU117 => { + KBox::new(tu102::Tu102::::new(), GFP_KERNEL)? as KBox> + }, GA102 | GA103 | GA104 | GA106 | GA107 | AD102 | AD103 | AD104 | AD106 | AD107 => { KBox::new(ga102::Ga102::::new(), GFP_KERNEL)? as KBox> - } + }, _ => return Err(ENOTSUPP), }; diff --git a/drivers/gpu/nova-core/falcon/hal/tu102.rs b/drivers/gpu/nova-core/falcon/hal/tu102.rs new file mode 100644 index 000000000000..19a8b49ca2cd --- /dev/null +++ b/drivers/gpu/nova-core/falcon/hal/tu102.rs @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 + +use core::marker::PhantomData; + +use kernel::{ + io::poll::read_poll_timeout, + prelude::*, + time::delay::fsleep, + time::Delta, // +}; + +use crate::driver::Bar0; +use crate::falcon::{ + Falcon, FalconBromParams, FalconEngine +}; +use crate::regs; + +use super::FalconHal; + +pub(super) struct Tu102(PhantomData); + +impl Tu102 { + pub(super) fn new() -> Self { + Self(PhantomData) + } +} + +impl FalconHal for Tu102 { + fn select_core(&self, _falcon: &Falcon, _bar: &Bar0) -> Result { + Ok(()) + } + + fn signature_reg_fuse_version( + &self, + _falcon: &Falcon, + _bar: &Bar0, + _engine_id_mask: u16, + _ucode_id: u8, + ) -> Result { + Ok(0) + } + + fn program_brom(&self, _falcon: &Falcon, _bar: &Bar0, _params: &FalconBromParams) -> Result { + Ok(()) + } + + fn is_riscv_active(&self, bar: &Bar0) -> bool { + let cpuctl = regs::NV_PRISCV_RISCV_CORE_SWITCH_RISCV_STATUS::read(bar, &E::ID); + cpuctl.active_stat() + } + + fn reset_wait_mem_scrubbing(&self, bar: &Bar0) -> Result { + read_poll_timeout( + || Ok(regs::NV_PFALCON_FALCON_DMACTL::read(bar, &E::ID)), + |r| r.mem_scrubbing_done(), + Delta::ZERO, + Delta::from_millis(10), + ) + .map(|_| ()) + } + + fn reset_eng(&self, bar: &Bar0) -> Result { + regs::NV_PFALCON_FALCON_ENGINE::update(bar, &E::ID, |v| v.set_reset(true)); + + // TIMEOUT: falcon engine should not take more than 10us to reset. + fsleep(Delta::from_micros(10)); + + regs::NV_PFALCON_FALCON_ENGINE::update(bar, &E::ID, |v| v.set_reset(false)); + + self.reset_wait_mem_scrubbing(bar)?; + + Ok(()) + } +} -- 2.52.0