From patchwork Wed Sep 20 06:47:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huisong Li X-Patchwork-Id: 13392173 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 691DECE79AD for ; Wed, 20 Sep 2023 06:51:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=X0jW2AGdojQ0m3zmLMvFFlbEQ07oiHVpD/T/Sjv6KfI=; b=uOEmEaLkDlicwT CDaT/fqbof2mj/Sf+XgmGA6G0UlJLTGbAT5lBCrL8j82rQuytCVDpV3qMVLmxChYTZsugEkNivqR4 ct+aryfvuVk0nFM5lGAvkrOtI+lHN1egqUZ4vPph71de18s7a7tqc89vnnznEqzr47LidyVrXVKeg H8oez1qZaoa7RuZb8yYS8ibVlnZDVgLY/vPzEfsW/1OVs9sEKhfbE+z1qUPnJh/BnIWHIQ+SKNRPd AG9AFyRSCHlQJpHyGeH+WMmAYAbiOGxHqY0M+IHsxyJxXlzlZ1zQDMJgf1BFjP6fwjmJLhuSZC8Dr HV2e75UzALTHjBpjdSLA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qir2i-0024J7-1l; Wed, 20 Sep 2023 06:50:36 +0000 Received: from szxga03-in.huawei.com ([45.249.212.189]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qir2d-0024HI-2t for linux-arm-kernel@lists.infradead.org; Wed, 20 Sep 2023 06:50:33 +0000 Received: from kwepemm600004.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4Rr8Fz1Yb8zMlgF; Wed, 20 Sep 2023 14:46:47 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by kwepemm600004.china.huawei.com (7.193.23.242) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Wed, 20 Sep 2023 14:50:21 +0800 From: Huisong Li To: , , , CC: , , , , , Subject: [PATCH v2 2/2] soc: kunpeng_hccs: add the check for PCC subspace type Date: Wed, 20 Sep 2023 14:47:03 +0800 Message-ID: <20230920064703.23543-3-lihuisong@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20230920064703.23543-1-lihuisong@huawei.com> References: <20230914115753.9064-1-lihuisong@huawei.com> <20230920064703.23543-1-lihuisong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemm600004.china.huawei.com (7.193.23.242) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230919_235032_125486_C7E311EB X-CRM114-Status: GOOD ( 12.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently, HCCS driver directly uses Generic Communications Channel Shared Memory Region which is used in type0/1/2 to communicate with platform, but actually doesn't support type3/4/5. So this patch adds the check for PCC subspace type. Signed-off-by: Huisong Li --- drivers/soc/hisilicon/kunpeng_hccs.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index f3810d9d1caa..4ba3bfd45a01 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -174,6 +174,19 @@ static int hccs_register_pcc_channel(struct hccs_dev *hdev) return rc; } +static int hccs_check_pcc_info(struct hccs_dev *hdev) +{ + struct pcc_mbox_chan *pcc_chan = hdev->cl_info.pcc_chan; + + if (pcc_chan->type >= ACPI_PCCT_TYPE_EXT_PCC_MASTER_SUBSPACE) { + dev_err(hdev->dev, "unsupport for subspace type%u.\n", + pcc_chan->type); + return -EOPNOTSUPP; + } + + return 0; +} + static int hccs_check_chan_cmd_complete(struct hccs_dev *hdev) { struct hccs_mbox_client_info *cl_info = &hdev->cl_info; @@ -1224,6 +1237,10 @@ static int hccs_probe(struct platform_device *pdev) if (rc) return rc; + rc = hccs_check_pcc_info(hdev); + if (rc) + goto unregister_pcc_chan; + rc = hccs_get_dev_caps(hdev); if (rc) goto unregister_pcc_chan;