This patch adds fpga region platform driver for Intel FPGA Management Engine. It register a fpga region with given fpga manager / bridge device.
Signed-off-by: Tim Whisonant <[email protected]> Signed-off-by: Enno Luebbers <[email protected]> Signed-off-by: Shiva Rao <[email protected]> Signed-off-by: Christopher Rauer <[email protected]> Signed-off-by: Wu Hao <[email protected]> --- drivers/fpga/Kconfig | 7 +++ drivers/fpga/Makefile | 1 + drivers/fpga/intel-fpga-fme-region.c | 91 ++++++++++++++++++++++++++++++++++++ 3 files changed, 99 insertions(+) create mode 100644 drivers/fpga/intel-fpga-fme-region.c diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig index 05e2a8e..db1a6ea 100644 --- a/drivers/fpga/Kconfig +++ b/drivers/fpga/Kconfig @@ -165,6 +165,13 @@ config INTEL_FPGA_FME_BRIDGE Say Y to enable FPGA Bridge driver for Intel FPGA Management Engine. +config INTEL_FPGA_FME_REGION + tristate "Intel FPGA FME Region Driver" + depends on INTEL_FPGA_FME && FPGA_REGION + help + Say Y to enable FPGA Region driver for Intel FPGA Management + Engine. + endif endif # FPGA diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile index 131c105..fd0a71f 100644 --- a/drivers/fpga/Makefile +++ b/drivers/fpga/Makefile @@ -33,6 +33,7 @@ obj-$(CONFIG_INTEL_FPGA_PCI) += intel-fpga-pci.o obj-$(CONFIG_INTEL_FPGA_FME) += intel-fpga-fme.o obj-$(CONFIG_INTEL_FPGA_FME_MGR) += intel-fpga-fme-mgr.o obj-$(CONFIG_INTEL_FPGA_FME_BRIDGE) += intel-fpga-fme-br.o +obj-$(CONFIG_INTEL_FPGA_FME_REGION) += intel-fpga-fme-region.o intel-fpga-pci-objs := intel-pcie.o intel-feature-dev.o intel-fpga-fme-objs := intel-fme-main.o intel-fme-pr.o diff --git a/drivers/fpga/intel-fpga-fme-region.c b/drivers/fpga/intel-fpga-fme-region.c new file mode 100644 index 0000000..2b5ca4d --- /dev/null +++ b/drivers/fpga/intel-fpga-fme-region.c @@ -0,0 +1,91 @@ +/* + * FPGA Region Driver for Intel FPGA Management Engine (FME) + * + * Copyright (C) 2017 Intel Corporation, Inc. + * + * Authors: + * Wu Hao <[email protected]> + * Joseph Grecco <[email protected]> + * Enno Luebbers <[email protected]> + * Tim Whisonant <[email protected]> + * Ananda Ravuri <[email protected]> + * Henry Mitchel <[email protected]> + * + * This work is licensed under the terms of the GNU GPL version 2. See + * the COPYING file in the top-level directory. + */ + +#include <linux/module.h> +#include <linux/fpga/fpga-region.h> + +#include "intel-feature-dev.h" +#include "intel-fme.h" + +static int fme_region_get_bridges(struct fpga_region *region, + struct fpga_image_info *info) +{ + struct fme_region_pdata *pdata = region->priv; + struct device *dev = &pdata->br->dev; + + return fpga_bridge_get_to_list(dev, info, ®ion->bridge_list); +} + +static int fme_region_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct fme_region_pdata *pdata = dev_get_platdata(dev); + struct fpga_region *region; + struct fpga_manager *mgr; + int ret; + + mgr = fpga_mgr_get(&pdata->mgr->dev); + if (IS_ERR(mgr)) + return -EPROBE_DEFER; + + region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL); + if (!region) { + ret = -ENOMEM; + goto eprobe_mgr_put; + } + + region->mgr = mgr; + region->get_bridges = fme_region_get_bridges; + region->priv = pdata; + + ret = fpga_region_register(dev, region); + if (ret) + goto eprobe_mgr_put; + + dev_dbg(dev, "Intel FME FPGA Region probed\n"); + + return 0; + +eprobe_mgr_put: + fpga_mgr_put(mgr); + return ret; +} + +static int fme_region_remove(struct platform_device *pdev) +{ + struct fpga_region *region = dev_get_drvdata(&pdev->dev); + + fpga_mgr_put(region->mgr); + fpga_region_unregister(region); + + return 0; +} + +static struct platform_driver fme_region_driver = { + .driver = { + .name = INTEL_FPGA_FME_REGION, + }, + .probe = fme_region_probe, + .remove = fme_region_remove, +}; + +module_platform_driver(fme_region_driver); + +MODULE_DESCRIPTION("FPGA Region for Intel FPGA Management Engine"); +MODULE_AUTHOR("Intel Corporation"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:intel-fpga-fme-region"); -- 1.8.3.1
