From: Moritz Fischer <mdf@kernel.org>
To: Wu Hao <hao.wu@intel.com>
Cc: atull@kernel.org, mdf@kernel.org, linux-fpga@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
luwei.kang@intel.com, yi.z.zhang@intel.com,
Tim Whisonant <tim.whisonant@intel.com>,
Enno Luebbers <enno.luebbers@intel.com>,
Shiva Rao <shiva.rao@intel.com>,
Christopher Rauer <christopher.rauer@intel.com>,
Xiao Guangrong <guangrong.xiao@linux.intel.com>
Subject: Re: [PATCH v4 08/24] fpga: add FPGA DFL PCIe device driver
Date: Thu, 15 Mar 2018 11:49:56 -0700 [thread overview]
Message-ID: <20180315184955.vaz2p4r5zzf4wspy@derp-derp.local> (raw)
In-Reply-To: <1518513893-4719-9-git-send-email-hao.wu@intel.com>
Hi Hao,
On Tue, Feb 13, 2018 at 05:24:37PM +0800, Wu Hao wrote:
> From: Zhang Yi <yi.z.zhang@intel.com>
>
> This patch implements the basic framework of the driver for FPGA PCIe
> device which implements the Device Feature List (DFL) in its MMIO space.
> This driver is verified on Intel(R) PCIe based FPGA DFL devices, including
> both integrated (e.g Intel Server Platform with In-package FPGA) and
> discrete (e.g Intel FPGA PCIe Acceleration Cards) solutions.
>
> Signed-off-by: Tim Whisonant <tim.whisonant@intel.com>
> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com>
> Signed-off-by: Shiva Rao <shiva.rao@intel.com>
> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com>
> Signed-off-by: Zhang Yi <yi.z.zhang@intel.com>
> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
> Signed-off-by: Wu Hao <hao.wu@intel.com>
with module_pci_driver() fix:
Acked-by: Moritz Fischer <mdf@kernel.org>
> ---
> v2: move the code to drivers/fpga folder as suggested by Alan Tull.
> switch to GPLv2 license.
> fix comments from Moritz Fischer.
> v3: switch to pci_set_dma_mask/consistent_dma_mask() function.
> remove pci_save_state() in probe function.
> rename driver to INTEL_FPGA_DFL_PCI and intel-dfl-pci.c to indicate
> this driver supports Intel FPGA PCI devices which implement DFL.
> improve Kconfig description for INTEL_FPGA_DFL_PCI
> v4: rename to FPGA_DFL_PCI (dfl-pci.c) for better reuse.
> fix SPDX license issue.
> ---
> drivers/fpga/Kconfig | 15 ++++++
> drivers/fpga/Makefile | 3 ++
> drivers/fpga/dfl-pci.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 145 insertions(+)
> create mode 100644 drivers/fpga/dfl-pci.c
>
> diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
> index 01ad31f..87f3d44 100644
> --- a/drivers/fpga/Kconfig
> +++ b/drivers/fpga/Kconfig
> @@ -140,4 +140,19 @@ config FPGA_DFL
> Gate Array (FPGA) solutions which implement Device Feature List.
> It provides enumeration APIs, and feature device infrastructure.
>
> +config FPGA_DFL_PCI
> + tristate "FPGA Device Feature List (DFL) PCIe Device Driver"
> + depends on PCI && FPGA_DFL
> + help
> + Select this option to enable PCIe driver for PCIe based
> + Field-Programmable Gate Array (FPGA) solutions which implemented
> + the Device Feature List (DFL). This driver provides interfaces
> + for userspace applications to configure, enumerate, open and access
> + FPGA accelerators on the FPGA DFL devices, enables system level
> + management functions such as FPGA partial reconfiguration, power
> + management, and virtualization with DFL framework and DFL feature
> + device drivers.
> +
> + To compile this as a module, choose M here.
> +
> endif # FPGA
> diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
> index c4c62b9..4375630 100644
> --- a/drivers/fpga/Makefile
> +++ b/drivers/fpga/Makefile
> @@ -30,3 +30,6 @@ obj-$(CONFIG_OF_FPGA_REGION) += of-fpga-region.o
>
> # FPGA Device Feature List Support
> obj-$(CONFIG_FPGA_DFL) += dfl.o
> +
> +# Drivers for FPGAs which implement DFL
> +obj-$(CONFIG_FPGA_DFL_PCI) += dfl-pci.o
> diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c
> new file mode 100644
> index 0000000..d91ea42
> --- /dev/null
> +++ b/drivers/fpga/dfl-pci.c
> @@ -0,0 +1,127 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Driver for FPGA Device Feature List (DFL) PCIe device
> + *
> + * Copyright (C) 2017 Intel Corporation, Inc.
> + *
> + * Authors:
> + * Zhang Yi <Yi.Z.Zhang@intel.com>
> + * Xiao Guangrong <guangrong.xiao@linux.intel.com>
> + * Joseph Grecco <joe.grecco@intel.com>
> + * Enno Luebbers <enno.luebbers@intel.com>
> + * Tim Whisonant <tim.whisonant@intel.com>
> + * Ananda Ravuri <ananda.ravuri@intel.com>
> + * Henry Mitchel <henry.mitchel@intel.com>
> + */
> +
> +#include <linux/pci.h>
> +#include <linux/types.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/stddef.h>
> +#include <linux/errno.h>
> +#include <linux/aer.h>
> +
> +#define DRV_VERSION "0.8"
> +#define DRV_NAME "dfl-pci"
> +
> +/* PCI Device ID */
> +#define PCIE_DEVICE_ID_PF_INT_5_X 0xBCBD
> +#define PCIE_DEVICE_ID_PF_INT_6_X 0xBCC0
> +#define PCIE_DEVICE_ID_PF_DSC_1_X 0x09C4
> +/* VF Device */
> +#define PCIE_DEVICE_ID_VF_INT_5_X 0xBCBF
> +#define PCIE_DEVICE_ID_VF_INT_6_X 0xBCC1
> +#define PCIE_DEVICE_ID_VF_DSC_1_X 0x09C5
> +
> +static struct pci_device_id cci_pcie_id_tbl[] = {
> + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_PF_INT_5_X),},
> + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_VF_INT_5_X),},
> + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_PF_INT_6_X),},
> + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_VF_INT_6_X),},
> + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_PF_DSC_1_X),},
> + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCIE_DEVICE_ID_VF_DSC_1_X),},
> + {0,}
> +};
> +MODULE_DEVICE_TABLE(pci, cci_pcie_id_tbl);
> +
> +static
> +int cci_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *pcidevid)
> +{
> + int ret;
> +
> + ret = pci_enable_device(pcidev);
> + if (ret < 0) {
> + dev_err(&pcidev->dev, "Failed to enable device %d.\n", ret);
> + return ret;
> + }
> +
> + ret = pci_enable_pcie_error_reporting(pcidev);
> + if (ret && ret != -EINVAL)
> + dev_info(&pcidev->dev, "PCIE AER unavailable %d.\n", ret);
> +
> + ret = pci_request_regions(pcidev, DRV_NAME);
> + if (ret) {
> + dev_err(&pcidev->dev, "Failed to request regions.\n");
> + goto disable_error_report_exit;
> + }
> +
> + pci_set_master(pcidev);
> +
> + if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) {
> + ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
> + if (ret)
> + goto release_region_exit;
> + } else if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(32))) {
> + ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
> + if (ret)
> + goto release_region_exit;
> + } else {
> + ret = -EIO;
> + dev_err(&pcidev->dev, "No suitable DMA support available.\n");
> + goto release_region_exit;
> + }
> +
> + /* TODO: create and add the platform device per feature list */
> + return 0;
> +
> +release_region_exit:
> + pci_release_regions(pcidev);
> +disable_error_report_exit:
> + pci_disable_pcie_error_reporting(pcidev);
> + pci_disable_device(pcidev);
> + return ret;
> +}
> +
> +static void cci_pci_remove(struct pci_dev *pcidev)
> +{
> + pci_release_regions(pcidev);
> + pci_disable_pcie_error_reporting(pcidev);
> + pci_disable_device(pcidev);
> +}
> +
> +static struct pci_driver cci_pci_driver = {
> + .name = DRV_NAME,
> + .id_table = cci_pcie_id_tbl,
> + .probe = cci_pci_probe,
> + .remove = cci_pci_remove,
> +};
> +
> +static int __init ccidrv_init(void)
> +{
> + pr_info("FPGA DFL PCIe Driver: Version %s\n", DRV_VERSION);
Not a fan of the additional output. Can you make it module_pci_driver?
> +
> + return pci_register_driver(&cci_pci_driver);
> +}
> +
> +static void __exit ccidrv_exit(void)
> +{
> + pci_unregister_driver(&cci_pci_driver);
> +}
> +
> +module_init(ccidrv_init);
> +module_exit(ccidrv_exit);
> +
> +MODULE_DESCRIPTION("FPGA DFL PCIe Device Driver");
> +MODULE_AUTHOR("Intel Corporation");
> +MODULE_LICENSE("GPL v2");
> --
> 2.7.4
>
next prev parent reply other threads:[~2018-03-15 18:50 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-13 9:24 [PATCH v4 00/24] FPGA Device Feature List (DFL) Device Drivers Wu Hao
2018-02-13 9:24 ` [PATCH v4 01/24] docs: fpga: add a document for FPGA Device Feature List (DFL) Framework Overview Wu Hao
2018-02-26 22:48 ` Alan Tull
2018-02-27 2:12 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 02/24] fpga: mgr: add region_id to fpga_image_info Wu Hao
2018-02-13 9:24 ` [PATCH v4 03/24] fpga: mgr: add status for fpga-manager Wu Hao
2018-02-14 15:55 ` Alan Tull
2018-02-15 9:42 ` Wu, Hao
2018-02-14 20:55 ` Moritz Fischer
2018-02-13 9:24 ` [PATCH v4 04/24] fpga: add device feature list support Wu Hao
2018-03-21 23:54 ` Alan Tull
2018-03-22 4:40 ` Wu Hao
2018-03-22 21:31 ` Alan Tull
2018-03-23 4:33 ` Wu Hao
2018-03-26 17:21 ` Alan Tull
2018-03-27 2:35 ` Wu Hao
2018-03-29 21:57 ` Alan Tull
2018-04-02 4:22 ` Wu Hao
2018-04-02 19:06 ` Alan Tull
2018-04-03 1:36 ` Wu Hao
2018-04-04 20:06 ` Alan Tull
2018-04-06 11:01 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 05/24] fpga: dfl: add chardev support for feature devices Wu Hao
2018-02-13 9:24 ` [PATCH v4 06/24] fpga: dfl: adds fpga_cdev_find_port Wu Hao
2018-02-14 16:24 ` Alan Tull
2018-02-15 9:46 ` Wu, Hao
2018-02-14 20:55 ` Moritz Fischer
2018-02-13 9:24 ` [PATCH v4 07/24] fpga: dfl: add feature device infrastructure Wu Hao
2018-02-14 21:03 ` Moritz Fischer
2018-02-14 21:13 ` Alan Tull
2018-02-15 10:05 ` Wu, Hao
2018-02-15 19:49 ` Moritz Fischer
2018-02-18 2:15 ` Wu, Hao
2018-02-13 9:24 ` [PATCH v4 08/24] fpga: add FPGA DFL PCIe device driver Wu Hao
2018-03-13 16:05 ` Alan Tull
2018-03-15 18:49 ` Moritz Fischer [this message]
2018-03-16 4:29 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 09/24] fpga: dfl-pci: add enumeration for feature devices Wu Hao
2018-03-13 18:30 ` Alan Tull
2018-03-14 5:21 ` Wu Hao
2018-03-14 14:48 ` Alan Tull
2018-02-13 9:24 ` [PATCH v4 10/24] fpga: dfl: add FPGA Management Engine driver basic framework Wu Hao
2018-04-05 18:35 ` Alan Tull
2018-04-06 11:04 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 11/24] fpga: dfl: fme: add header sub feature support Wu Hao
2018-02-14 16:36 ` Alan Tull
2018-02-13 9:24 ` [PATCH v4 12/24] fpga: dfl: fme: add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2018-03-19 18:29 ` Alan Tull
2018-03-20 6:46 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 13/24] fpga: region: add compat_id support Wu Hao
2018-02-28 22:55 ` Alan Tull
2018-03-01 6:17 ` Wu Hao
2018-03-05 19:42 ` Alan Tull
2018-03-06 0:56 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 14/24] fpga: dfl: fme: add partial reconfiguration sub feature support Wu Hao
2018-03-05 22:46 ` Alan Tull
2018-03-06 2:08 ` Wu Hao
2018-03-06 18:29 ` Alan Tull
2018-03-07 4:39 ` Wu Hao
2018-03-11 20:09 ` matthew.gerlach
2018-03-12 4:29 ` Wu Hao
2018-03-12 18:53 ` Alan Tull
2018-03-12 21:36 ` matthew.gerlach
2018-03-13 1:07 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 15/24] fpga: dfl-fme-pr: add compat_id support for dfl-fme-region platform device Wu Hao
2018-02-28 23:06 ` Alan Tull
2018-03-01 5:49 ` Wu Hao
2018-03-01 15:59 ` Alan Tull
2018-03-01 15:55 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 16/24] fpga: dfl: add fpga manager platform driver for FME Wu Hao
2018-03-20 20:32 ` Alan Tull
2018-03-21 2:50 ` Wu Hao
2018-03-21 16:55 ` Moritz Fischer
2018-03-22 6:07 ` Wu Hao
2018-04-05 18:45 ` Alan Tull
2018-04-06 11:11 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 17/24] fpga: dfl: add fpga bridge " Wu Hao
2018-02-13 9:24 ` [PATCH v4 18/24] fpga: dfl: add fpga region " Wu Hao
2018-02-13 9:24 ` [PATCH v4 19/24] fpga: dfl-fme-region: add compat_id support Wu Hao
2018-02-13 9:24 ` [PATCH v4 20/24] fpga: dfl: add FPGA Accelerated Function Unit driver basic framework Wu Hao
2018-03-19 18:40 ` Alan Tull
2018-04-05 18:26 ` Alan Tull
2018-04-06 11:05 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 21/24] fpga: dfl: afu: add header sub feature support Wu Hao
2018-02-13 9:24 ` [PATCH v4 22/24] fpga: dfl: afu: add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2018-02-13 9:24 ` [PATCH v4 23/24] fpga: dfl: afu: add user afu sub feature support Wu Hao
2018-03-19 20:10 ` Alan Tull
2018-03-20 7:10 ` Wu Hao
2018-03-20 18:17 ` Alan Tull
2018-03-21 3:00 ` Wu Hao
2018-03-21 23:50 ` Alan Tull
2018-03-22 4:41 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 24/24] fpga: dfl: afu: add FPGA_PORT_DMA_MAP/UNMAP ioctls support Wu Hao
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