From patchwork Wed Jan 26 19:50:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 12725689 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34F56C5DF62 for ; Wed, 26 Jan 2022 19:51:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244598AbiAZTvN (ORCPT ); Wed, 26 Jan 2022 14:51:13 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:62469 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S244546AbiAZTvI (ORCPT ); Wed, 26 Jan 2022 14:51:08 -0500 X-IronPort-AV: E=Sophos;i="5.88,319,1635174000"; d="scan'208";a="108403304" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 27 Jan 2022 04:51:07 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 66EE94008541; Thu, 27 Jan 2022 04:51:04 +0900 (JST) From: Lad Prabhakar To: Kishon Vijay Abraham I , Bjorn Helgaas , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Arnd Bergmann , Greg Kroah-Hartman , Marek Vasut , Yoshihiro Shimoda , Rob Herring , linux-pci@vger.kernel.org, linux-renesas-soc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH 3/5] misc: pci_endpoint_test: Add driver data for Renesas RZ/G2{EHMN} Date: Wed, 26 Jan 2022 19:50:41 +0000 Message-Id: <20220126195043.28376-4-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220126195043.28376-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20220126195043.28376-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add "dmac_data_alignment" member (indicating the alignment requirement for internal DMAC for data transfers) to struct pci_endpoint_test_data and add driver_data to Renesas RZ/G2{EHMN}. Signed-off-by: Lad Prabhakar --- drivers/misc/pci_endpoint_test.c | 40 ++++++++++++++++++++++++++------ 1 file changed, 33 insertions(+), 7 deletions(-) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 8f786a225dcf..0a00d45830e9 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -116,6 +116,7 @@ struct pci_endpoint_test { struct miscdevice miscdev; enum pci_barno test_reg_bar; size_t alignment; + size_t dmac_data_alignment; const char *name; }; @@ -123,6 +124,7 @@ struct pci_endpoint_test_data { enum pci_barno test_reg_bar; size_t alignment; int irq_type; + size_t dmac_data_alignment; }; static inline u32 pci_endpoint_test_readl(struct pci_endpoint_test *test, @@ -368,8 +370,11 @@ static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, goto err; use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA); - if (use_dma) + if (use_dma) { flags |= FLAG_USE_DMA; + if (test->dmac_data_alignment) + size = ALIGN(size, test->dmac_data_alignment); + } if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) { dev_err(dev, "Invalid IRQ type option\n"); @@ -502,8 +507,11 @@ static bool pci_endpoint_test_write(struct pci_endpoint_test *test, goto err; use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA); - if (use_dma) + if (use_dma) { flags |= FLAG_USE_DMA; + if (test->dmac_data_alignment) + size = ALIGN(size, test->dmac_data_alignment); + } if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) { dev_err(dev, "Invalid IRQ type option\n"); @@ -600,8 +608,11 @@ static bool pci_endpoint_test_read(struct pci_endpoint_test *test, goto err; use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA); - if (use_dma) + if (use_dma) { flags |= FLAG_USE_DMA; + if (test->dmac_data_alignment) + size = ALIGN(size, test->dmac_data_alignment); + } if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) { dev_err(dev, "Invalid IRQ type option\n"); @@ -787,6 +798,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, test->test_reg_bar = test_reg_bar; test->alignment = data->alignment; irq_type = data->irq_type; + test->dmac_data_alignment = data->dmac_data_alignment; } init_completion(&test->irq_raised); @@ -948,6 +960,12 @@ static const struct pci_endpoint_test_data j721e_data = { .irq_type = IRQ_TYPE_MSI, }; +static const struct pci_endpoint_test_data renesas_rzg2x_data = { + .test_reg_bar = BAR_0, + .irq_type = IRQ_TYPE_MSI, + .dmac_data_alignment = 8, +}; + static const struct pci_device_id pci_endpoint_test_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x), .driver_data = (kernel_ulong_t)&default_data, @@ -965,10 +983,18 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654), .driver_data = (kernel_ulong_t)&am654_data }, - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774A1),}, - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774B1),}, - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774C0),}, - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774E1),}, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774A1), + .driver_data = (kernel_ulong_t)&renesas_rzg2x_data, + }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774B1), + .driver_data = (kernel_ulong_t)&renesas_rzg2x_data, + }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774C0), + .driver_data = (kernel_ulong_t)&renesas_rzg2x_data, + }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774E1), + .driver_data = (kernel_ulong_t)&renesas_rzg2x_data, + }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_J721E), .driver_data = (kernel_ulong_t)&j721e_data, },