linux-kernel - Re: [PATCH] ASoC: SOF: amd: Skip IRAM/DRAM size modification for Steam Deck OLED

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Date: Fri, 9 Feb 2024 18:19:55 +0530
From: Venkata Prasad Potturu <venkataprasad.potturu@....com>
To: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
 Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
 Liam Girdwood <lgirdwood@...il.com>,
 Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
 Bard Liao <yung-chuan.liao@...ux.intel.com>,
 Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
 Daniel Baluta <daniel.baluta@....com>,
 Kai Vehmanen <kai.vehmanen@...ux.intel.com>, Mark Brown
 <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
 Takashi Iwai <tiwai@...e.com>, "Mukunda, Vijendar" <Vijendar.Mukunda@....com>
Cc: sound-open-firmware@...a-project.org, linux-sound@...r.kernel.org,
 linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH] ASoC: SOF: amd: Skip IRAM/DRAM size modification for
 Steam Deck OLED


On 2/9/24 17:58, Cristian Ciocaltea wrote:
> The recent introduction of the ACP/PSP communication for IRAM/DRAM fence
> register modification breaks the audio support on Valve's Steam Deck
> OLED device.
>
> It causes IPC timeout errors when trying to load DSP topology during
> probing:
>
> 1707255557.688176 kernel: snd_sof_amd_vangogh 0000:04:00.5: ipc tx timed out for 0x30100000 (msg/reply size: 48/0)
> 1707255557.689035 kernel: snd_sof_amd_vangogh 0000:04:00.5: ------------[ IPC dump start ]------------
> 1707255557.689421 kernel: snd_sof_amd_vangogh 0000:04:00.5: dsp_msg = 0x0 dsp_ack = 0x91d14f6f host_msg = 0x1 host_ack = 0xead0f1a4 irq_stat >
> 1707255557.689730 kernel: snd_sof_amd_vangogh 0000:04:00.5: ------------[ IPC dump end ]------------
> 1707255557.690074 kernel: snd_sof_amd_vangogh 0000:04:00.5: ------------[ DSP dump start ]------------
> 1707255557.690376 kernel: snd_sof_amd_vangogh 0000:04:00.5: IPC timeout
> 1707255557.690744 kernel: snd_sof_amd_vangogh 0000:04:00.5: fw_state: SOF_FW_BOOT_COMPLETE (7)
> 1707255557.691037 kernel: snd_sof_amd_vangogh 0000:04:00.5: invalid header size 0xdb43fe7. FW oops is bogus
> 1707255557.694824 kernel: snd_sof_amd_vangogh 0000:04:00.5: unexpected fault 0x6942d3b3 trace 0x6942d3b3
> 1707255557.695392 kernel: snd_sof_amd_vangogh 0000:04:00.5: ------------[ DSP dump end ]------------
> 1707255557.695755 kernel: snd_sof_amd_vangogh 0000:04:00.5: Failed to setup widget PIPELINE.6.ACPHS1.IN
> 1707255557.696069 kernel: snd_sof_amd_vangogh 0000:04:00.5: error: tplg component load failed -110
> 1707255557.696374 kernel: snd_sof_amd_vangogh 0000:04:00.5: error: failed to load DSP topology -22
> 1707255557.697904 kernel: snd_sof_amd_vangogh 0000:04:00.5: ASoC: error at snd_soc_component_probe on 0000:04:00.5: -22
> 1707255557.698405 kernel: sof_mach nau8821-max: ASoC: failed to instantiate card -22
> 1707255557.701061 kernel: sof_mach nau8821-max: error -EINVAL: Failed to register card(sof-nau8821-max)
> 1707255557.701624 kernel: sof_mach: probe of nau8821-max failed with error -22
>
> It's worth noting this is the only Vangogh compatible device for which
> signed firmware support has been enabled in AMD ACP SOF driver via
> acp_sof_quirk_table.
>
> Hence, use this information and skip IRAM/DRAM size modification for Vangogh
> platforms having the signed_fw_image field set.
>
> Fixes: 55d7bbe43346 ("ASoC: SOF: amd: Add acp-psp mailbox interface for iram-dram fence register modification")
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> ---
>   sound/soc/sof/amd/acp.c | 9 ++++++++-
>   1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c
> index 9b3c26210db3..71689d2a5b56 100644
> --- a/sound/soc/sof/amd/acp.c
> +++ b/sound/soc/sof/amd/acp.c
> @@ -278,7 +278,14 @@ int configure_and_run_sha_dma(struct acp_dev_data *adata, void *image_addr,
>   	}
>   
>   	/* psp_send_cmd only required for vangogh platform (rev - 5) */
> -	if (desc->rev == 5) {
> +	/*
> +	 * FIXME: This causes IPC timeout when trying to load DSP topology
> +	 * on the Steam Deck OLED device matching acp_sof_quirk_table above.
> +	 * The quirk enables signed firmware support on this particular
> +	 * Vangogh compatible device, hence skip IRAM/DRAM size modification
> +	 * when signed_fw_image is set.
> +	 */
> +	if (desc->rev == 5 && !adata->signed_fw_image) {

Programming ACP_IRAM_DRAM_FENCE register to modify the size of IRAM and 
DRAM and it's noting related to signed or unsigned fw_image.

This ACP_IRAM_DRAM_FENCE register writing need to do before starting sha 
dma.


>   		/* Modify IRAM and DRAM size */
>   		ret = psp_send_cmd(adata, MBOX_ACP_IRAM_DRAM_FENCE_COMMAND | IRAM_DRAM_FENCE_2);
>   		if (ret)