Add a gpuvas debugfs file listing all GPU VAs for the Tyr DRM driver. Collects VMs into a shared list during firmware init and renders them via dump_gpuva_info on read.
Signed-off-by: Alvin Sun <[email protected]> --- drivers/gpu/drm/tyr/debugfs.rs | 20 ++++++++++++++++++++ drivers/gpu/drm/tyr/driver.rs | 10 ++++++++++ drivers/gpu/drm/tyr/tyr.rs | 1 + 3 files changed, 31 insertions(+) diff --git a/drivers/gpu/drm/tyr/debugfs.rs b/drivers/gpu/drm/tyr/debugfs.rs new file mode 100644 index 0000000000000..0e93c629829cd --- /dev/null +++ b/drivers/gpu/drm/tyr/debugfs.rs @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0 or MIT + +//! Debugfs support for the Tyr DRM driver. + +use kernel::{ + debugfs::SeqShow, + prelude::*, + seq_file, // +}; + +use crate::driver::TyrDrmRegistrationData; + +/// `SeqShow` implementation for the `gpuvas` debugfs file. +pub(crate) struct GpuvasShow; + +impl SeqShow<TyrDrmRegistrationData<'_>> for GpuvasShow { + fn show(reg_data: &TyrDrmRegistrationData<'_>, m: &seq_file::SeqFile) -> Result { + reg_data.vm_registry.for_each(|vm| vm.dump_gpuva_info(m)) + } +} diff --git a/drivers/gpu/drm/tyr/driver.rs b/drivers/gpu/drm/tyr/driver.rs index f26c3bb332e70..20be2dafa8421 100644 --- a/drivers/gpu/drm/tyr/driver.rs +++ b/drivers/gpu/drm/tyr/driver.rs @@ -7,6 +7,7 @@ Clk, OptionalClk, // }, + debugfs, device::{ Bound, Core, @@ -45,6 +46,7 @@ }; use crate::{ + debugfs::GpuvasShow, file::TyrDrmFileData, fw::{ irq::{ @@ -87,6 +89,9 @@ pub(crate) struct TyrDrmRegistrationData<'drm> { /// Firmware sections. pub(crate) fw: Arc<Firmware<'drm>>, + /// VM registry, used by debugfs to enumerate GPU VA spaces. + pub(crate) vm_registry: Arc<VmRegistry<'drm>>, + #[pin] clks: Mutex<Clocks>, @@ -198,6 +203,7 @@ fn probe<'bound>( let reg_data = pin_init!(TyrDrmRegistrationData { pdev, fw: firmware, + vm_registry: registry, clks <- new_mutex!(Clocks { core: core_clk, stacks: stacks_clk, @@ -252,6 +258,10 @@ impl drm::Driver for TyrDrmDriver { kernel::declare_drm_ioctls! { (PANTHOR_DEV_QUERY, drm_panthor_dev_query, ioctl::RENDER_ALLOW, TyrDrmFileData::dev_query), } + + fn debugfs_init(dir: &debugfs::ScopeRef<'_, TyrDrmRegistrationData<'_>>) { + dir.seq_file::<GpuvasShow>(c"gpuvas"); + } } struct Clocks { diff --git a/drivers/gpu/drm/tyr/tyr.rs b/drivers/gpu/drm/tyr/tyr.rs index e7ec450bdc9c0..6eb13c15d1657 100644 --- a/drivers/gpu/drm/tyr/tyr.rs +++ b/drivers/gpu/drm/tyr/tyr.rs @@ -7,6 +7,7 @@ use crate::driver::TyrPlatformDriver; +mod debugfs; mod driver; mod file; mod fw; -- 2.43.0
