From patchwork Thu Apr 21 16:58:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 564435 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5D39BC433EF for ; Thu, 21 Apr 2022 17:00:24 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 87061167E; Thu, 21 Apr 2022 18:59:32 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 87061167E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1650560422; bh=YV0I0M0iaF3C53P4Ef62Uqf9Z32c4wgPjxGfmoQIxB0=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=ezWfhGFRmj3Nt7n150PeoN0soYmOKIZcuyTMyz1hXN/MFP38y9+a6y4U8Um7cVsgV Ne7YkYRBxdPMDNihQq6b7AKyR9FiC71XOtRaHRvd5o+I28VGwdefyfCpLhWwufMVIy C5MDGkUAGlGZwRJ9FHj+fLe3yDkT/LhMMRcALHGM= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 78357F804FB; Thu, 21 Apr 2022 18:58:48 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id DCA88F80125; Thu, 21 Apr 2022 18:58:45 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 8043DF8032D for ; Thu, 21 Apr 2022 18:58:38 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 8043DF8032D Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="RpixAtlf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1650560319; x=1682096319; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=YV0I0M0iaF3C53P4Ef62Uqf9Z32c4wgPjxGfmoQIxB0=; b=RpixAtlfTlPcnJkESl1yc4qB7pknZIPvVnLN8SuErqi+/nfTRfb8mS1d ZrwpvvqBcgcRYBITwmteOudr2EsQtqJmCn5Is9jko/7EKMNfsTiuOU9Oe 3mgRkzKM3bbnOH0KTyg35LP9rOx1dU2ZdM9FG1wE15RukUgD6FvsRt1Rn jPn5W84LBxRBw3WMPfu170E5uxN8Fod1XwQMBJOqHLzzdTTQ6hmJpQKqW PGb4hwu79dIxP/MA6LLcnpQaMB1TLghzzVqyI2I3r1cvqzu+yK82kZndP ABxLinNyo7sNVZ3YSujshhwDGNmGR6Fo9MaToPrvLWavBseWVWvNSMxYf Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10324"; a="246317738" X-IronPort-AV: E=Sophos;i="5.90,279,1643702400"; d="scan'208";a="246317738" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2022 09:58:32 -0700 X-IronPort-AV: E=Sophos;i="5.90,279,1643702400"; d="scan'208";a="530390030" Received: from qingsu-mobl.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.212.148.250]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2022 09:58:31 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Subject: [PATCH v2 2/2] ASoC: SOF: amd: Use dedicated MBOX for ACP and PSP communication Date: Thu, 21 Apr 2022 11:58:20 -0500 Message-Id: <20220421165820.337207-3-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220421165820.337207-1-pierre-louis.bossart@linux.intel.com> References: <20220421165820.337207-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: Ajit Kumar Pandey , tiwai@suse.de, Ranjani Sridharan , Pierre-Louis Bossart , broonie@kernel.org, Bard Liao X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Ajit Kumar Pandey We are currently using generic PSP Mailbox register for sending SHA complete command to PSP but observe random arbitration issue during PSP validation as MP0_C2PMSG_26_REG used by other kernel modules. Use separate mailbox registers and doorbell mechanism to send SHA_DMA complete command to PSP. This fixes such validation issues and added flexibility for sending more ACP commands to PSP in future as new mbox registers i.e MP0_C2PMSG_114_REG and MP0_C2PMSG_73_REG are dedicated by PSP for ACP communications. Reviewed-by: Ranjani Sridharan Reviewed-by: Bard Liao Signed-off-by: Ajit Kumar Pandey Signed-off-by: Pierre-Louis Bossart --- sound/soc/sof/amd/acp.c | 24 +++++++++++++++++++++--- sound/soc/sof/amd/acp.h | 6 ++++-- 2 files changed, 25 insertions(+), 5 deletions(-) diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c index 8e88ae597fb88..0c272573df979 100644 --- a/sound/soc/sof/amd/acp.c +++ b/sound/soc/sof/amd/acp.c @@ -152,7 +152,7 @@ static int psp_mbox_ready(struct acp_dev_data *adata, bool ack) for (timeout = ACP_PSP_TIMEOUT_COUNTER; timeout > 0; timeout--) { msleep(20); - smn_read(adata->smn_dev, MP0_C2PMSG_26_REG, &data); + smn_read(adata->smn_dev, MP0_C2PMSG_114_REG, &data); if (data & MBOX_READY_MASK) return 0; } @@ -173,17 +173,35 @@ static int psp_mbox_ready(struct acp_dev_data *adata, bool ack) static int psp_send_cmd(struct acp_dev_data *adata, int cmd) { - int ret; + struct snd_sof_dev *sdev = adata->dev; + int ret, timeout; + u32 data; if (!cmd) return -EINVAL; + /* Get a non-zero Doorbell value from PSP */ + for (timeout = ACP_PSP_TIMEOUT_COUNTER; timeout > 0; timeout--) { + msleep(MBOX_DELAY); + smn_read(adata->smn_dev, MP0_C2PMSG_73_REG, &data); + if (data) + break; + } + + if (!timeout) { + dev_err(sdev->dev, "Failed to get Doorbell from MBOX %x\n", MP0_C2PMSG_73_REG); + return -EINVAL; + } + /* Check if PSP is ready for new command */ ret = psp_mbox_ready(adata, 0); if (ret) return ret; - smn_write(adata->smn_dev, MP0_C2PMSG_26_REG, cmd); + smn_write(adata->smn_dev, MP0_C2PMSG_114_REG, cmd); + + /* Ring the Doorbell for PSP */ + smn_write(adata->smn_dev, MP0_C2PMSG_73_REG, data); /* Check MBOX ready as PSP ack */ ret = psp_mbox_ready(adata, 1); diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h index ca69b4969ca22..de526a1bce131 100644 --- a/sound/soc/sof/amd/acp.h +++ b/sound/soc/sof/amd/acp.h @@ -57,8 +57,10 @@ #define ACP_SHA_STAT 0x8000 #define ACP_PSP_TIMEOUT_COUNTER 5 #define ACP_EXT_INTR_ERROR_STAT 0x20000000 -#define MP0_C2PMSG_26_REG 0x03810570 -#define MBOX_ACP_SHA_DMA_COMMAND 0x330000 +#define MP0_C2PMSG_114_REG 0x3810AC8 +#define MP0_C2PMSG_73_REG 0x3810A24 +#define MBOX_ACP_SHA_DMA_COMMAND 0x70000 +#define MBOX_DELAY 1000 #define MBOX_READY_MASK 0x80000000 #define MBOX_STATUS_MASK 0xFFFF