From patchwork Mon Jan 14 13:24:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 155485 Delivered-To: patch@linaro.org Received: by 2002:a02:48:0:0:0:0:0 with SMTP id 69csp3658016jaa; Mon, 14 Jan 2019 05:27:58 -0800 (PST) X-Google-Smtp-Source: ALg8bN7fT2wSMM5CGwbTuQVOYZ5ymBYJjzarjMN+ph1swHlRRLK1wiKvWTWnlI+SEk9QHyuSUCN1 X-Received: by 2002:a62:ca9c:: with SMTP id y28mr25236197pfk.236.1547472478699; Mon, 14 Jan 2019 05:27:58 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1547472478; cv=none; d=google.com; s=arc-20160816; b=QR2/HViAi6qAOFK0Dq5DKM3Uucoj70lx5PFxsS3eyQnebmmBgQW7i13YoLKJU7lcQy sfQ6/WDK5yWFNXG9dYFhV8aOyeP2eHIUSXk6ei2NK3k8j4JfH381l0a4FY29tiIiCHrF kjt5nIrqX3eDnuFBRaVV6JIMHLBDWbmJhbkn/OR/N7/YM3Zqw2Wf1LgiwaVamGDog+6E OYc2/Sbl7mHmGwXIJca/V6PA4e/4ifE2k1E2XeJJqjjTHmeAxN/olhb2Bd+JbD1MRwq8 UJYfVF0tBA32m8dlxUzCDxnZ4vSkbgBiBprraZVCQv5+xlhW0J/Ayn1M4kPvghIdTyEV FduA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=0PiaQYnV59ccfwEhn8gPR5j82jBP2sS0jMXzDzaA8TY=; b=bjA1FyE/towRZZ5yUY5cjPoWjt9a3tqRYtyzWSoMa8A3mc/1JdACXzKrmHNhtkPd7X RGRZV8kf0jCm42lSNxFOWN0Z0cPXusK7NW/FF8iuh3ntklDiF7IOWECmdnSnwNUSdsO6 OGQIfBJvQ2BNmArEVFjwiNErDkIW2LAoaVV+ikl3dtBl4rcSe8/sQVec/T0Pr0Sl90N+ vU4LQt9+6qhEZrA8XlhNNHR3thKXX0jnVsXNshVelHUI9DmwdHDtvHOs3zvyV7NkU1U5 HU0dgMwlTWEmjWzshmYbi+2aJlzjs1s4ho0xUu2vEiYN6p2glKM+BUu8I7KkWikCB3Cy +YOw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=hFhA8QE8; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id a12si372201pll.112.2019.01.14.05.27.58; Mon, 14 Jan 2019 05:27:58 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=hFhA8QE8; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727074AbfANN15 (ORCPT + 31 others); Mon, 14 Jan 2019 08:27:57 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:41344 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726717AbfANN1z (ORCPT ); Mon, 14 Jan 2019 08:27:55 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x0EDQmWa019648; Mon, 14 Jan 2019 07:26:48 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1547472408; bh=0PiaQYnV59ccfwEhn8gPR5j82jBP2sS0jMXzDzaA8TY=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=hFhA8QE82uMeSb5OF7qMlUx6XubeLPJNUbOTu8pcgaQaL98xcm7YrnF8fMnDsopih 7trFXBk+ZF6gKvoVgNkgxThAyfJOGvhWTOXhA+L2cb8LCuqsAyoBQnprtQsrnsGoCv mUKcD/laa7eRygEsk9MHJAKduAPXVkBzQRUa1WBg= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x0EDQmfb095069 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 14 Jan 2019 07:26:48 -0600 Received: from DFLE101.ent.ti.com (10.64.6.22) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Mon, 14 Jan 2019 07:26:46 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE101.ent.ti.com (10.64.6.22) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Mon, 14 Jan 2019 07:26:47 -0600 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x0EDOoWj028516; Mon, 14 Jan 2019 07:26:43 -0600 From: Kishon Vijay Abraham I To: Gustavo Pimentel , Rob Herring , Lorenzo Pieralisi CC: Kishon Vijay Abraham I , Jingoo Han , Bjorn Helgaas , Mark Rutland , Arnd Bergmann , Greg Kroah-Hartman , Murali Karicheri , Jesper Nilsson , , , , , , Subject: [PATCH 23/24] misc: pci_endpoint_test: Add support to test PCI EP in AM654x Date: Mon, 14 Jan 2019 18:54:23 +0530 Message-ID: <20190114132424.6445-24-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190114132424.6445-1-kishon@ti.com> References: <20190114132424.6445-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org TI's AM654x PCIe EP has a restriction that BAR_0 is mapped to application registers. "PCIe Inbound Address Translation" section in AM65x Sitara Processors TRM (SPRUID7 – April 2018) describes BAR0 is reserved. Configure pci_endpoint_test to use BAR_2 instead. Also set alignment to 64K since "PCIe Subsystem Address Translation" section in TRM indicates minimum ATU window size is 64K. Signed-off-by: Kishon Vijay Abraham I --- drivers/misc/pci_endpoint_test.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) -- 2.17.1 diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 896e2df9400f..6dfaeeaeec0a 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -75,6 +75,11 @@ #define PCI_ENDPOINT_TEST_IRQ_TYPE 0x24 #define PCI_ENDPOINT_TEST_IRQ_NUMBER 0x28 +#define PCI_DEVICE_ID_TI_AM654 0xb00c + +#define is_am654_pci_dev(pdev) \ + ((pdev)->device == PCI_DEVICE_ID_TI_AM654) + static DEFINE_IDA(pci_endpoint_test_ida); #define to_endpoint_test(priv) container_of((priv), struct pci_endpoint_test, \ @@ -588,6 +593,7 @@ static long pci_endpoint_test_ioctl(struct file *file, unsigned int cmd, int ret = -EINVAL; enum pci_barno bar; struct pci_endpoint_test *test = to_endpoint_test(file->private_data); + struct pci_dev *pdev = test->pdev; mutex_lock(&test->mutex); switch (cmd) { @@ -595,6 +601,8 @@ static long pci_endpoint_test_ioctl(struct file *file, unsigned int cmd, bar = arg; if (bar < 0 || bar > 5) goto ret; + if (is_am654_pci_dev(pdev) && bar == BAR_0) + goto ret; ret = pci_endpoint_test_bar(test, bar); break; case PCITEST_LEGACY_IRQ: @@ -785,10 +793,18 @@ static void pci_endpoint_test_remove(struct pci_dev *pdev) pci_disable_device(pdev); } +static const struct pci_endpoint_test_data am654_data = { + .test_reg_bar = BAR_2, + .alignment = SZ_64K, +}; + static const struct pci_device_id pci_endpoint_test_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x) }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x) }, { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 0xedda) }, + { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654), + .driver_data = (kernel_ulong_t)&am654_data + }, { } }; MODULE_DEVICE_TABLE(pci, pci_endpoint_test_tbl);