From: John Hubbard <jhubbard@nvidia.com>
To: Alexandre Courbot <acourbot@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, linux-kernel@vger.kernel.org,
rust-for-linux@vger.kernel.org
Subject: Re: [PATCH 1/4] gpu: nova-core: fix stride of NV_PFSP_* registers
Date: Fri, 30 Oct 2026 15:27:04 -0700 [thread overview]
Message-ID: <c80a53dc-93b8-43c3-8aac-4249d25d1790@nvidia.com> (raw)
In-Reply-To: <20261030-r000-cmdq-prep-v1-1-f2befbcd8ba9@nvidia.com>
On 10/30/26 12:41 AM, Alexandre Courbot wrote:
> OpenRM defines these registers with a stride of 8 bytes, so reflect that
> fact in our own declarations. That inconsistency went unnoticed because
> nova-core only ever uses the first register of each array at the moment.
>
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
> drivers/gpu/nova-core/regs.rs | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
thanks,
--
John Hubbard
>
> diff --git a/drivers/gpu/nova-core/regs.rs b/drivers/gpu/nova-core/regs.rs
> index 88662da634dc..df2eddc58efb 100644
> --- a/drivers/gpu/nova-core/regs.rs
> +++ b/drivers/gpu/nova-core/regs.rs
> @@ -402,19 +402,19 @@ pub(crate) fn mem_scrubbing_done(self) -> bool {
> register! {
> base: NovaRegisters;
>
> - pub(crate) NV_PFSP_QUEUE_HEAD(u32)[8] @ 0x008f2c00 {
> + pub(crate) NV_PFSP_QUEUE_HEAD(u32)[8, stride = 8] @ 0x008f2c00 {
> 31:0 address => u32;
> }
>
> - pub(crate) NV_PFSP_QUEUE_TAIL(u32)[8] @ 0x008f2c04 {
> + pub(crate) NV_PFSP_QUEUE_TAIL(u32)[8, stride = 8] @ 0x008f2c04 {
> 31:0 address => u32;
> }
>
> - pub(crate) NV_PFSP_MSGQ_HEAD(u32)[8] @ 0x008f2c80 {
> + pub(crate) NV_PFSP_MSGQ_HEAD(u32)[8, stride = 8] @ 0x008f2c80 {
> 31:0 val => u32;
> }
>
> - pub(crate) NV_PFSP_MSGQ_TAIL(u32)[8] @ 0x008f2c84 {
> + pub(crate) NV_PFSP_MSGQ_TAIL(u32)[8, stride = 8] @ 0x008f2c84 {
> 31:0 val => u32;
> }
> }
>
next prev parent reply other threads:[~2026-10-30 22:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-30 7:41 [PATCH 0/4] gpu: nova-core: gsp: cmdq: preparatory changes for r000 support Alexandre Courbot
2026-10-30 7:41 ` [PATCH 1/4] gpu: nova-core: fix stride of NV_PFSP_* registers Alexandre Courbot
2026-10-30 22:27 ` John Hubbard [this message]
2026-10-30 7:41 ` [PATCH 2/4] gpu: nova-core: regs: add msgq v2 BAR0 register declarations Alexandre Courbot
2026-10-30 7:41 ` [PATCH 3/4] gpu: nova-core: gsp: cmdq: ring the GSP doorbell from the queue memory Alexandre Courbot
2026-10-30 7:41 ` [PATCH 4/4] gpu: nova-core: gsp: cmdq: compute the queue regions from a count and a slot Alexandre Courbot
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