From: Frank Li <Frank.li@oss.nxp.com>
To: nathan.lynch@amd.com
Cc: Vinod Koul <vkoul@kernel.org>, Frank Li <Frank.Li@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
David Rientjes <rientjes@google.com>,
John.Kariuki@amd.com, Jonathan Cameron <jic23@kernel.org>,
Kinsey Ho <kinseyho@google.com>,
Mario Limonciello <mario.limonciello@amd.com>,
PradeepVineshReddy.Kodamati@amd.com,
Shivank Garg <shivankg@amd.com>,
Stephen Bates <Stephen.Bates@amd.com>,
Tycho Andersen <tycho@kernel.org>, Wei Huang <wei.huang2@amd.com>,
Wei Xu <weixugc@google.com>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: Re: [PATCH v4 08/25] dmaengine: sdxi: Introduce submission queue
Date: Thu, 12 Nov 2026 15:58:18 -0600 [thread overview]
Message-ID: <avY2eoawRh4TaKu_@SMW015318> (raw)
In-Reply-To: <20261103-sdxi-base-v4-8-3668ccc7aab8@amd.com>
On Tue, Nov 03, 2026 at 08:49:49PM -0600, Nathan Lynch via B4 Relay wrote:
> From: Nathan Lynch <nathan.lynch@amd.com>
>
> Add the sdxi_sq (submission queue) type and APIs that act on it. The
> sq contains three control structures shared with hardware: descriptor
> ring, write index, and context status block (which contains the read
> index). Define the hardware context-status and generic descriptor
> layouts, including assertions for their sizes.
>
> The descriptor ring requires only 64-byte alignment, so it's practical
> to implement it as a flexible array member. The write index and context
> status are small enough to place in the struct as well, so we have a
> single DMA coherent allocation to manage.
>
> Signed-off-by: Nathan Lynch <nathan.lynch@amd.com>
> ---
Reviewed-by: Frank Li <Frank.Li@nxp.com>
next prev parent reply other threads:[~2026-11-12 21:58 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-04 2:49 [PATCH v4 00/25] dmaengine: Smart Data Accelerator Interface (SDXI) basic support Nathan Lynch via B4 Relay
2026-11-04 2:49 ` [PATCH v4 01/25] PCI: Add SNIA SDXI accelerator sub-class Nathan Lynch via B4 Relay
2026-11-05 18:10 ` Frank Li
2026-11-05 18:25 ` Lynch, Nathan
2026-11-12 21:28 ` Bjorn Helgaas
2026-11-04 2:49 ` [PATCH v4 02/25] MAINTAINERS: Add entry for SDXI driver Nathan Lynch via B4 Relay
2026-11-12 21:19 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 03/25] dmaengine: sdxi: Add PCI initialization Nathan Lynch via B4 Relay
2026-11-05 17:59 ` Frank Li
2026-11-05 18:07 ` Lynch, Nathan
2026-11-04 2:49 ` [PATCH v4 04/25] dmaengine: sdxi: Prepare function and sanitize MMIO state Nathan Lynch via B4 Relay
2026-11-12 21:26 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 05/25] dmaengine: sdxi: Feature discovery and initial configuration Nathan Lynch via B4 Relay
2026-11-12 21:32 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 06/25] dmaengine: sdxi: Configure context tables Nathan Lynch via B4 Relay
2026-11-12 21:49 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 07/25] dmaengine: sdxi: Allocate context control DMA pool Nathan Lynch via B4 Relay
2026-11-12 21:50 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 08/25] dmaengine: sdxi: Introduce submission queue Nathan Lynch via B4 Relay
2026-11-12 21:58 ` Frank Li [this message]
2026-11-04 2:49 ` [PATCH v4 09/25] dmaengine: sdxi: Allocate administrative context Nathan Lynch via B4 Relay
2026-11-12 22:10 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 10/25] dmaengine: sdxi: Install " Nathan Lynch via B4 Relay
2026-11-12 22:17 ` Frank Li
2026-11-04 2:49 ` [PATCH v4 11/25] dmaengine: sdxi: Start functions on probe, stop on remove Nathan Lynch via B4 Relay
2026-11-04 3:04 ` sashiko-bot
2026-11-04 2:49 ` [PATCH v4 12/25] dmaengine: sdxi: Add client context allocation API Nathan Lynch via B4 Relay
2026-11-04 2:49 ` [PATCH v4 13/25] dmaengine: sdxi: Add descriptor ring management Nathan Lynch via B4 Relay
2026-11-04 2:49 ` [PATCH v4 14/25] dmaengine: sdxi: Add unit tests for descriptor ring reservations Nathan Lynch via B4 Relay
2026-11-04 3:02 ` sashiko-bot
2026-11-04 2:49 ` [PATCH v4 15/25] dmaengine: sdxi: Per-context access key (AKey) table entry allocator Nathan Lynch via B4 Relay
2026-11-04 2:49 ` [PATCH v4 16/25] dmaengine: sdxi: Add completion status block API Nathan Lynch via B4 Relay
2026-11-04 2:49 ` [PATCH v4 17/25] dmaengine: sdxi: Add unit tests for completion pool ownership Nathan Lynch via B4 Relay
2026-11-04 2:49 ` [PATCH v4 18/25] dmaengine: sdxi: Add context submission helper Nathan Lynch via B4 Relay
2026-11-04 2:50 ` [PATCH v4 19/25] dmaengine: sdxi: Encode context start, stop, update, and sync descriptors Nathan Lynch via B4 Relay
2026-11-05 16:52 ` Tycho Andersen
2026-11-04 2:50 ` [PATCH v4 20/25] dmaengine: sdxi: Add client context release with update and sync Nathan Lynch via B4 Relay
2026-11-04 2:50 ` [PATCH v4 21/25] dmaengine: sdxi: Provide context start and stop APIs Nathan Lynch via B4 Relay
2026-11-04 2:50 ` [PATCH v4 22/25] dmaengine: sdxi: Encode copy and interrupt descriptors Nathan Lynch via B4 Relay
2026-11-05 17:00 ` Tycho Andersen
2026-11-04 2:50 ` [PATCH v4 23/25] dmaengine: sdxi: Add unit tests for descriptor encoding Nathan Lynch via B4 Relay
2026-11-04 2:50 ` [PATCH v4 24/25] dmaengine: sdxi: MSI/MSI-X vector allocation and mapping Nathan Lynch via B4 Relay
2026-11-04 3:15 ` sashiko-bot
2026-11-04 2:50 ` [PATCH v4 25/25] dmaengine: sdxi: Add DMA engine provider Nathan Lynch via B4 Relay
2026-11-04 3:24 ` sashiko-bot
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