From: sashiko-bot@kernel.org
To: "Koichiro Den" <den@valinux.co.jp>
Cc: linux-pci@vger.kernel.org, dmaengine@vger.kernel.org,
vkoul@kernel.org, Frank.Li@kernel.org
Subject: Re: [PATCH v7 03/10] PCI: endpoint: Add DMA auxiliary resource metadata
Date: Thu, 13 Aug 2026 06:41:12 +0000 [thread overview]
Message-ID: <20260813064113.1CBA91F00A3A@smtp.kernel.org> (raw)
In-Reply-To: <20260813063757.3131865-4-den@valinux.co.jp>
> Extend EPC auxiliary resource metadata so endpoint functions can
> discover controller-owned DMA registers, logical DMA channels, and
> descriptor memory.
>
> The DMA metadata is intentionally generic at the EPC layer. A backend
> reports the register layout, channel counts, logical channel resources,
> and descriptor memory resources. Logical channels carry hardware channel
> numbers, identify their corresponding local DMA engine device and static
> channel ID, and refer to descriptor memory by ID. Descriptor memory is
> identified separately so one memory resource can be shared by multiple
> channels.
>
> For DesignWare controllers, reg_layout_data carries the eDMA/HDMA map
> format so a consumer can distinguish legacy, unroll, HDMA compatible,
> and HDMA native register layouts without making the EPC API itself
> DesignWare-specific.
>
> Signed-off-by: Koichiro Den <den@valinux.co.jp>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260813063757.3131865-1-den@valinux.co.jp?part=3
next prev parent reply other threads:[~2026-08-13 6:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 6:37 [PATCH v7 00/10] PCI: endpoint: Add PCI DMA endpoint function Koichiro Den
2026-08-13 6:37 ` [PATCH v7 01/10] dmaengine: Allow drivers to assign static channel IDs Koichiro Den
2026-08-13 6:51 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 02/10] PCI: endpoint: Define endpoint DMA BAR metadata format Koichiro Den
2026-08-13 6:40 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 03/10] PCI: endpoint: Add DMA auxiliary resource metadata Koichiro Den
2026-08-13 6:41 ` sashiko-bot [this message]
2026-08-13 6:37 ` [PATCH v7 04/10] PCI: endpoint: Add API to delegate EPC DMA channels to the host Koichiro Den
2026-08-13 6:46 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 05/10] dmaengine: dw-edma: Add channel delegation helpers Koichiro Den
2026-08-13 6:50 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 06/10] PCI: dwc: Implement endpoint DMA channel delegation Koichiro Den
2026-08-13 6:47 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 07/10] PCI: dwc: Expose endpoint DMA resources Koichiro Den
2026-08-13 6:45 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 08/10] dmaengine: dw-edma-pcie: Discover endpoint DMA metadata Koichiro Den
2026-08-13 6:50 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 09/10] PCI: endpoint: Add DMA endpoint function Koichiro Den
2026-08-13 6:53 ` sashiko-bot
2026-08-13 6:37 ` [PATCH v7 10/10] Documentation: PCI: Add PCI DMA endpoint function documentation Koichiro Den
2026-08-13 6:46 ` sashiko-bot
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