From: Alexandre Courbot <acourbot@nvidia.com>
To: John Hubbard <jhubbard@nvidia.com>,
Danilo Krummrich <dakr@kernel.org>,
Alice Ryhl <aliceryhl@google.com>,
David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>,
Benno Lossin <lossin@kernel.org>, Gary Guo <gary@garyguo.net>
Cc: Alistair Popple <apopple@nvidia.com>,
Timur Tabi <ttabi@nvidia.com>,
Eliot Courtney <ecourtney@nvidia.com>,
Zhi Wang <zhiw@nvidia.com>,
nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org,
Alexandre Courbot <acourbot@nvidia.com>
Subject: [PATCH v5 02/14] gpu: nova-core: gsp: cmdq: simplify framing error description
Date: Tue, 20 Oct 2026 19:08:23 +0900 [thread overview]
Message-ID: <20261020-cmdq-rpc-v5-2-dceeb8f360ec@nvidia.com> (raw)
In-Reply-To: <20261020-cmdq-rpc-v5-0-dceeb8f360ec@nvidia.com>
Use simpler and more precise language to explain the conditions in which
`EIO` is returned.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
drivers/gpu/nova-core/gsp/cmdq.rs | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/nova-core/gsp/cmdq.rs b/drivers/gpu/nova-core/gsp/cmdq.rs
index accfc1d20d28..1bd15fc0aef2 100644
--- a/drivers/gpu/nova-core/gsp/cmdq.rs
+++ b/drivers/gpu/nova-core/gsp/cmdq.rs
@@ -775,8 +775,7 @@ fn send_command<M>(&mut self, command: M) -> Result
/// # Errors
///
/// - `ETIMEDOUT` if `timeout` has elapsed before any message becomes available.
- /// - `EIO` if there was some inconsistency (e.g. message shorter than advertised) on the
- /// message queue.
+ /// - `EIO` if a message fails framing or checksum validation.
fn wait_for_msg(&self, timeout: Delta) -> Result<GspMessage<'_>> {
// Wait for a message to arrive from the GSP.
let (slice_1, slice_2) = read_poll_timeout(
@@ -849,8 +848,7 @@ fn wait_for_msg(&self, timeout: Delta) -> Result<GspMessage<'_>> {
/// # Errors
///
/// - `ETIMEDOUT` if `timeout` has elapsed before any message becomes available.
- /// - `EIO` if there was some inconsistency (e.g. message shorter than advertised) on the
- /// message queue.
+ /// - `EIO` if a message fails framing or checksum validation.
/// - `ENOMSG` if the message was not the awaited reply.
///
/// Error codes returned by [`MessageFromGsp::read`] are propagated as-is.
@@ -902,7 +900,7 @@ fn receive_msg<M: MessageFromGsp>(&mut self, timeout: Delta) -> Result<M>
///
/// - `ETIMEDOUT` if no message of type `M` arrives before the deadline, however many other
/// messages arrive while waiting.
- /// - `EIO` if a message fails framing or checksum validation (see [`Self::wait_for_msg`]).
+ /// - `EIO` if a message fails framing or checksum validation.
///
/// Error codes returned by [`MessageFromGsp::read`] are propagated as-is.
fn await_msg<M: MessageFromGsp>(&mut self) -> Result<M>
--
2.56.0
next prev parent reply other threads:[~2026-10-20 10:10 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-20 10:08 [PATCH v5 00/14] gpu: nova-core: gsp: prepare the command queue for r000 dual-message types Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 01/14] gpu: nova-core: gsp: cmdq: remove stale comment Alexandre Courbot
2026-10-20 11:43 ` Eliot Courtney
2026-10-20 10:08 ` Alexandre Courbot [this message]
2026-10-20 11:43 ` [PATCH v5 02/14] gpu: nova-core: gsp: cmdq: simplify framing error description Eliot Courtney
2026-10-20 10:08 ` [PATCH v5 03/14] gpu: nova-core: gsp: cmdq: validate checksum earlier on receive Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 04/14] gpu: nova-core: gsp: introduce and use proper RpcMessageHeader type Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 05/14] gpu: nova-core: gsp: cmdq: group the RPC-specific part of send_single_command Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 06/14] gpu: nova-core: gsp: cmdq: split the transport part of the send path Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 07/14] gpu: nova-core: gsp: cmdq: split RPC parsing part of the receive path Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 08/14] gpu: nova-core: gsp: cmdq: move RPC message logging to RpcMessage Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 09/14] gpu: nova-core: gsp: cmdq: split the transport part of the receive path Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 10/14] gpu: nova-core: gsp: cmdq: extract await_msg_with from await_msg Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 11/14] gpu: nova-core: gsp: cmdq: use consume_element to implement drain Alexandre Courbot
2026-10-20 10:18 ` sashiko-bot
2026-10-20 14:27 ` Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 12/14] gpu: nova-core: gsp: cmdq: move the RPC code into a sub-module Alexandre Courbot
2026-10-20 10:15 ` sashiko-bot
2026-10-20 10:08 ` [PATCH v5 13/14] gpu: nova-core: gsp: move the RPC commands " Alexandre Courbot
2026-10-20 10:08 ` [PATCH v5 14/14] gpu: nova-core: gsp: add `rpc` to RPC message send/receive methods Alexandre Courbot
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