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Message-ID: <20250827082015.959430-11-apopple@nvidia.com>
Date: Wed, 27 Aug 2025 18:20:07 +1000
From: Alistair Popple <apopple@...dia.com>
To: dri-devel@...ts.freedesktop.org,
dakr@...nel.org,
acourbot@...dia.com
Cc: Alistair Popple <apopple@...dia.com>,
Miguel Ojeda <ojeda@...nel.org>,
Alex Gaynor <alex.gaynor@...il.com>,
Boqun Feng <boqun.feng@...il.com>,
Gary Guo <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
Benno Lossin <lossin@...nel.org>,
Andreas Hindborg <a.hindborg@...nel.org>,
Alice Ryhl <aliceryhl@...gle.com>,
Trevor Gross <tmgross@...ch.edu>,
David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
John Hubbard <jhubbard@...dia.com>,
Joel Fernandes <joelagnelf@...dia.com>,
Timur Tabi <ttabi@...dia.com>,
linux-kernel@...r.kernel.org,
nouveau@...ts.freedesktop.org
Subject: [PATCH 10/10] gpu: nova-core: gsp: Boot GSP
Boot the GSP to the RISC-V active state. Completing the boot requires
running the CPU sequencer which will be added in a future commit.
Signed-off-by: Alistair Popple <apopple@...dia.com>
---
drivers/gpu/nova-core/falcon.rs | 1 -
drivers/gpu/nova-core/firmware.rs | 4 +-
drivers/gpu/nova-core/firmware/riscv.rs | 3 +-
drivers/gpu/nova-core/gpu.rs | 56 +++++++++++++++++++++++--
4 files changed, 56 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs
index 875804499b077..0c8ee7761f705 100644
--- a/drivers/gpu/nova-core/falcon.rs
+++ b/drivers/gpu/nova-core/falcon.rs
@@ -620,7 +620,6 @@ pub(crate) fn is_riscv_active(&self, bar: &Bar0) -> Result<bool> {
}
/// Write the application version to the OS register.
- #[expect(dead_code)]
pub(crate) fn write_os_version(&self, bar: &Bar0, app_version: u32) -> Result<()> {
regs::NV_PFALCON_FALCON_OS::default()
.set_value(app_version)
diff --git a/drivers/gpu/nova-core/firmware.rs b/drivers/gpu/nova-core/firmware.rs
index 6c210e668d541..d35f1affaa28d 100644
--- a/drivers/gpu/nova-core/firmware.rs
+++ b/drivers/gpu/nova-core/firmware.rs
@@ -115,11 +115,11 @@ pub(super) fn elf64_section<'a, 'b>(elf: &'a [u8], name: &'b str) -> Option<&'a
}
/// Structure encapsulating the firmware blobs required for the GPU to operate.
-#[expect(dead_code)]
pub(crate) struct Firmware {
/// Runs on the sec2 falcon engine to load and start the GSP bootloader.
- booter_loader: BooterFirmware,
+ pub booter_loader: BooterFirmware,
/// Runs on the sec2 falcon engine to stop and unload a running GSP firmware.
+ #[expect(unused)]
booter_unloader: BooterFirmware,
/// GSP bootloader, verifies the GSP firmware before loading and running it.
pub gsp_bootloader: RiscvFirmware,
diff --git a/drivers/gpu/nova-core/firmware/riscv.rs b/drivers/gpu/nova-core/firmware/riscv.rs
index 81bb348055031..b67e130e06cd6 100644
--- a/drivers/gpu/nova-core/firmware/riscv.rs
+++ b/drivers/gpu/nova-core/firmware/riscv.rs
@@ -50,7 +50,6 @@ fn new(bin_fw: &BinFirmware<'_>) -> Result<Self> {
}
/// A parsed firmware for a RISC-V core, ready to be loaded and run.
-#[expect(unused)]
pub(crate) struct RiscvFirmware {
/// Offset at which the code starts in the firmware image.
pub code_offset: u32,
@@ -59,7 +58,7 @@ pub(crate) struct RiscvFirmware {
/// Offset at which the manifest starts in the firmware image.
pub manifest_offset: u32,
/// Application version.
- app_version: u32,
+ pub app_version: u32,
/// Device-mapped firmware image.
pub ucode: DmaObject,
}
diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index c070bd581e2c9..f86221a681e27 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
-use kernel::{device, devres::Devres, error::code::*, pci, prelude::*, sync::Arc};
+use kernel::{device, devres::Devres, error::code::*, pci, prelude::*, sync::Arc, time::Delta};
use crate::driver::Bar0;
use crate::falcon::{gsp::Gsp, sec2::Sec2, Falcon};
@@ -313,8 +313,58 @@ pub(crate) fn new(
Self::run_fwsec_frts(pdev.as_ref(), &gsp_falcon, bar, &bios, &fb_layout)?;
let libos = gsp::GspMemObjects::new(pdev, bar, &fw, &fb_layout)?;
- let _libos_handle = libos.libos_dma_handle();
- let _wpr_handle = libos.wpr_meta.dma_handle();
+ let libos_handle = libos.libos_dma_handle();
+ let wpr_handle = libos.wpr_meta.dma_handle();
+
+ gsp_falcon.reset(bar)?;
+ let (mbox0, mbox1) = gsp_falcon.boot(
+ bar,
+ Some(libos_handle as u32),
+ Some((libos_handle >> 32) as u32),
+ )?;
+ dev_dbg!(
+ pdev.as_ref(),
+ "GSP MBOX0: {:#x}, MBOX1: {:#x}\n",
+ mbox0,
+ mbox1
+ );
+
+ dev_dbg!(
+ pdev.as_ref(),
+ "Using SEC2 to load and run the booter_load firmware...\n"
+ );
+
+ sec2_falcon.reset(bar)?;
+ sec2_falcon.dma_load(bar, &fw.booter_loader)?;
+ let (mbox0, mbox1) = sec2_falcon.boot(
+ bar,
+ Some(wpr_handle as u32),
+ Some((wpr_handle >> 32) as u32),
+ )?;
+ dev_dbg!(
+ pdev.as_ref(),
+ "SEC2 MBOX0: {:#x}, MBOX1{:#x}\n",
+ mbox0,
+ mbox1
+ );
+
+ // Match what Nouveau does here:
+ gsp_falcon.write_os_version(bar, fw.gsp_bootloader.app_version)?;
+
+ // Poll for RISC-V to become active before running sequencer
+ util::wait_on(Delta::from_secs(5), || {
+ if gsp_falcon.is_riscv_active(bar).unwrap_or(false) {
+ Some(())
+ } else {
+ None
+ }
+ })?;
+
+ dev_dbg!(
+ pdev.as_ref(),
+ "RISC-V active? {}\n",
+ gsp_falcon.is_riscv_active(bar)?,
+ );
Ok(pin_init!(Self {
spec,
--
2.47.2
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