diff options
Diffstat (limited to 'drivers/fpga')
| -rw-r--r-- | drivers/fpga/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/fpga/Makefile | 1 | ||||
| -rw-r--r-- | drivers/fpga/dfl-fme-region.c | 88 |
3 files changed, 95 insertions, 0 deletions
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig index 11d1943b91d4..f99f422feec9 100644 --- a/drivers/fpga/Kconfig +++ b/drivers/fpga/Kconfig @@ -168,6 +168,12 @@ config FPGA_DFL_FME_BRIDGE help Say Y to enable FPGA Bridge driver for FPGA Management Engine. +config FPGA_DFL_FME_REGION + tristate "FPGA DFL FME Region Driver" + depends on FPGA_DFL_FME && HAS_IOMEM + help + Say Y to enable FPGA Region driver for FPGA Management Engine. + config FPGA_DFL_PCI tristate "FPGA DFL PCIe Device Driver" depends on PCI && FPGA_DFL diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile index cda05515ebfd..637c27512c28 100644 --- a/drivers/fpga/Makefile +++ b/drivers/fpga/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_FPGA_DFL) += dfl.o obj-$(CONFIG_FPGA_DFL_FME) += dfl-fme.o obj-$(CONFIG_FPGA_DFL_FME_MGR) += dfl-fme-mgr.o obj-$(CONFIG_FPGA_DFL_FME_BRIDGE) += dfl-fme-br.o +obj-$(CONFIG_FPGA_DFL_FME_REGION) += dfl-fme-region.o dfl-fme-objs := dfl-fme-main.o dfl-fme-pr.o diff --git a/drivers/fpga/dfl-fme-region.c b/drivers/fpga/dfl-fme-region.c new file mode 100644 index 000000000000..a6e0bde7cc31 --- /dev/null +++ b/drivers/fpga/dfl-fme-region.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * FPGA Region Driver for FPGA Management Engine (FME) + * + * Copyright (C) 2017-2018 Intel Corporation, Inc. + * + * Authors: + * Wu Hao <hao.wu@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/module.h> +#include <linux/fpga/fpga-region.h> + +#include "dfl-fme-pr.h" + +static int fme_region_get_bridges(struct fpga_region *region) +{ + struct dfl_fme_region_pdata *pdata = region->priv; + struct device *dev = &pdata->br->dev; + + return fpga_bridge_get_to_list(dev, region->info, ®ion->bridge_list); +} + +static int fme_region_probe(struct platform_device *pdev) +{ + struct dfl_fme_region_pdata *pdata = dev_get_platdata(&pdev->dev); + struct device *dev = &pdev->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 = fpga_region_create(dev, mgr, fme_region_get_bridges); + if (!region) { + ret = -ENOMEM; + goto eprobe_mgr_put; + } + + region->priv = pdata; + platform_set_drvdata(pdev, region); + + ret = fpga_region_register(region); + if (ret) + goto region_free; + + dev_dbg(dev, "DFL FME FPGA Region probed\n"); + + return 0; + +region_free: + fpga_region_free(region); +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_region_unregister(region); + fpga_mgr_put(region->mgr); + + return 0; +} + +static struct platform_driver fme_region_driver = { + .driver = { + .name = DFL_FPGA_FME_REGION, + }, + .probe = fme_region_probe, + .remove = fme_region_remove, +}; + +module_platform_driver(fme_region_driver); + +MODULE_DESCRIPTION("FPGA Region for DFL FPGA Management Engine"); +MODULE_AUTHOR("Intel Corporation"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:dfl-fme-region"); |