From: "Eliot Courtney" <ecourtney@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>
Cc: "John Hubbard" <jhubbard@nvidia.com>,
"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>,
<rust-for-linux@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 10/13] gpu: nova-core: falcon: allow DMA transfers to read from a framebuffer address
Date: Wed, 11 Nov 2026 10:42:49 +0900 [thread overview]
Message-ID: <DMS00P2Y1GKK.33SZY761NN5ME@nvidia.com> (raw)
In-Reply-To: <20261110-r000-fw-v3-10-20d79ebb646f@nvidia.com>
On Tue Nov 10, 2026 at 7:20 PM JST, Alexandre Courbot wrote:
> The r000 boot protocol has a load-and-execute event in which GSP-RM asks
> the driver to load a Heavy-Secured binary from framebuffer memory into
> the GSP falcon's memory by DMA in order to run it.
>
> Nova-core's falcon DMA loading method currently only supports loading
> from a DMA object that the driver has allocated, so there is no way to
> copy an image from framebuffer memory that an event supplied.
>
> Address this by making the source of a falcon DMA transfer an enum,
> which can be either a DMA object, or a GPU framebuffer address.
>
> The framebuffer address source has no user yet, but will be used by the
> r000 boot protocol.
>
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
next prev parent reply other threads:[~2026-11-11 1:42 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-10 10:20 [PATCH v3 00/13] gpu: nova-core: generic bootloader and falcon DMA changes for r000 Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 01/13] gpu: nova-core: separate the generic falcon bootloader from FWSEC Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 02/13] gpu: nova-core: falcon: widen the IMEM PIO offset to 24 bits Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 03/13] gpu: nova-core: move the bootloader DMEM descriptor out of FWSEC Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 04/13] gpu: nova-core: run the generic bootloader from its own type Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 05/13] gpu: nova-core: place the generic bootloader at the top of IMEM Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 06/13] rust: io: register: implement Copy and Clone for RegisterArrayLoc Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 07/13] gpu: nova-core: falcon: introduce and use with_fbif_transcfg Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 08/13] gpu: nova-core: falcon: rename the local variables of dma_wr() Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 09/13] gpu: nova-core: falcon: allow DMEM DMA transfers to request tagging Alexandre Courbot
2026-11-10 10:20 ` [PATCH v3 10/13] gpu: nova-core: falcon: allow DMA transfers to read from a framebuffer address Alexandre Courbot
2026-11-11 1:42 ` Eliot Courtney [this message]
2026-11-10 10:21 ` [PATCH v3 11/13] gpu: nova-core: falcon: use src_start as FB offset for all DMA transfers Alexandre Courbot
2026-11-11 1:42 ` Eliot Courtney
2026-11-10 10:21 ` [PATCH v3 12/13] gpu: nova-core: falcon: check the per-block DMA offsets for overflow Alexandre Courbot
2026-11-10 10:21 ` [PATCH v3 13/13] gpu: nova-core: falcon: program the FBIF_TRANSCFG register in dma_wr Alexandre Courbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=DMS00P2Y1GKK.33SZY761NN5ME@nvidia.com \
--to=ecourtney@nvidia.com \
--cc=acourbot@nvidia.com \
--cc=airlied@gmail.com \
--cc=aliceryhl@google.com \
--cc=apopple@nvidia.com \
--cc=dakr@kernel.org \
--cc=jhubbard@nvidia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=nova-gpu@lists.linux.dev \
--cc=rust-for-linux@vger.kernel.org \
--cc=simona@ffwll.ch \
--cc=ttabi@nvidia.com \
--cc=zhiw@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®