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| author | Alexandre Courbot <acourbot@nvidia.com> | 2025-06-19 22:23:56 +0900 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2025-06-23 19:15:07 +0200 |
| commit | bbe5db761086e870678697f8920db518a6297a18 (patch) | |
| tree | be7c81a17afab1f0b6601261df0bcd10a1fd06bc /drivers/gpu/nova-core/gpu.rs | |
| parent | a03c9bd953c2482aec8013c9c857b4d53031b54d (diff) | |
gpu: nova-core: wait for GFW_BOOT completion
Upon reset, the GPU executes the GFW (GPU Firmware) in order to
initialize its base parameters such as clocks. The driver must ensure
that this step is completed before using the hardware.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250619-nova-frts-v6-12-ecf41ef99252@nvidia.com
[ Slightly adjust comments in wait_gfw_boot_completion(). - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'drivers/gpu/nova-core/gpu.rs')
| -rw-r--r-- | drivers/gpu/nova-core/gpu.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs index 60b86f370284..e44ff6fa0714 100644 --- a/drivers/gpu/nova-core/gpu.rs +++ b/drivers/gpu/nova-core/gpu.rs @@ -4,6 +4,7 @@ use kernel::{device, devres::Devres, error::code::*, pci, prelude::*}; use crate::driver::Bar0; use crate::firmware::{Firmware, FIRMWARE_VERSION}; +use crate::gfw; use crate::regs; use crate::util; use core::fmt; @@ -182,6 +183,10 @@ impl Gpu { spec.revision ); + // We must wait for GFW_BOOT completion before doing any significant setup on the GPU. + gfw::wait_gfw_boot_completion(bar) + .inspect_err(|_| dev_err!(pdev.as_ref(), "GFW boot did not complete"))?; + Ok(pin_init!(Self { spec, bar: devres_bar, |