From: Peng Fan <peng.fan@oss.nxp.com>
To: Uwe Kleine-K??nig <u.kleine-koenig@baylibre.com>
Cc: Bjorn Andersson <andersson@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Frank Li <Frank.Li@nxp.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
linux-remoteproc@vger.kernel.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] remoteproc: elf_loader: Create new callback for copying segments to remote cpu
Date: Tue, 27 Oct 2026 10:58:16 +0800 [thread overview]
Message-ID: <auATSNiJH3LauMNL@nxa18884-linux-1.ap.freescale.net> (raw)
In-Reply-To: <4757287789726692e13b141b3b2af5245ae17e30.1793008847.git.u.kleine-koenig@baylibre.com>
On Mon, Oct 26, 2026 at 11:09:30AM +0100, Uwe Kleine-K??nig wrote:
>Some devices have special needs about how an Elf segment is copied to
>the remote cpu's memory space where the default implementation using
>memcpy_toio/memcpy and memset_io/memset isn't suitable. An affected
>mainline driver is imx-dsp-rproc which includes a near-copy of
>rproc_elf_load_segments() just to handle the IRAM only allowing 32 bit
>accesses. On (not-yet-mainline) ADI SC846 the respective memory isn't
>directly accessible at all and DMA must be used to copy the data.
>
>The new callback can be used to implement just the driver specific
>memcpy + memset to increase code reuse.
>
>The patch only appears big because of indentation changes.
>
>Signed-off-by: Uwe Kleine-K??nig <u.kleine-koenig@baylibre.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
next prev parent reply other threads:[~2026-10-27 3:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-26 10:09 [PATCH 0/2] remoteproc: elf_loader: Make rproc_elf_load_segments() more generic Uwe Kleine-König
2026-10-26 10:09 ` [PATCH 1/2] remoteproc: elf_loader: Create new callback for copying segments to remote cpu Uwe Kleine-König
2026-10-27 2:58 ` Peng Fan [this message]
2026-10-26 10:09 ` [PATCH 2/2] remoteproc: imx_dsp_rproc: Implement .memcpy_tova() Uwe Kleine-König
2026-10-27 2:58 ` Peng Fan
2026-10-27 15:55 ` [PATCH 0/2] remoteproc: elf_loader: Make rproc_elf_load_segments() more generic Mathieu Poirier
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