From ec63a7140a3326fa177114a7253c74039ab07454 Mon Sep 17 00:00:00 2001 From: Marshall Dawson Date: Fri, 3 May 2019 12:55:16 -0600 Subject: soc/amd/stoneyridge: Move IOMMU support to common BUG=b:131682806 Change-Id: Icb02180645c9e7e6dc973438c777228b031b3f54 Signed-off-by: Marshall Dawson Reviewed-on: https://review.coreboot.org/c/coreboot/+/32657 Reviewed-by: Richard Spiegel Tested-by: build bot (Jenkins) --- src/soc/amd/common/block/iommu/Kconfig | 5 +++ src/soc/amd/common/block/iommu/Makefile.inc | 1 + src/soc/amd/common/block/iommu/iommu.c | 59 +++++++++++++++++++++++++++++ 3 files changed, 65 insertions(+) create mode 100644 src/soc/amd/common/block/iommu/Kconfig create mode 100644 src/soc/amd/common/block/iommu/Makefile.inc create mode 100644 src/soc/amd/common/block/iommu/iommu.c (limited to 'src/soc/amd/common/block/iommu') diff --git a/src/soc/amd/common/block/iommu/Kconfig b/src/soc/amd/common/block/iommu/Kconfig new file mode 100644 index 0000000000..4580400a7c --- /dev/null +++ b/src/soc/amd/common/block/iommu/Kconfig @@ -0,0 +1,5 @@ +config SOC_AMD_COMMON_BLOCK_IOMMU + bool + default n + help + Select this option to use AMD common IOMMU support. diff --git a/src/soc/amd/common/block/iommu/Makefile.inc b/src/soc/amd/common/block/iommu/Makefile.inc new file mode 100644 index 0000000000..d08dbfcc33 --- /dev/null +++ b/src/soc/amd/common/block/iommu/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_IOMMU) += iommu.c diff --git a/src/soc/amd/common/block/iommu/iommu.c b/src/soc/amd/common/block/iommu/iommu.c new file mode 100644 index 0000000000..1c982ca00d --- /dev/null +++ b/src/soc/amd/common/block/iommu/iommu.c @@ -0,0 +1,59 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Rudolf Marek + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +static void iommu_read_resources(struct device *dev) +{ + struct resource *res; + + /* Get the normal pci resources of this device */ + pci_dev_read_resources(dev); + + /* Add an extra subtractive resource for both memory and I/O. */ + res = new_resource(dev, 0x44); + res->size = 512 * 1024; + res->align = log2(res->size); + res->gran = log2(res->size); + res->limit = 0xffffffff; /* 4G */ + res->flags = IORESOURCE_MEM; +} + +static struct pci_operations lops_pci = { + .set_subsystem = pci_dev_set_subsystem, +}; + +static struct device_operations iommu_ops = { + .read_resources = iommu_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .ops_pci = &lops_pci, +}; + +static const unsigned short pci_device_ids[] = { + PCI_DEVICE_ID_AMD_15H_MODEL_303F_NB_IOMMU, + PCI_DEVICE_ID_AMD_15H_MODEL_707F_NB_IOMMU, + 0 +}; + +static const struct pci_driver iommu_driver __pci_driver = { + .ops = &iommu_ops, + .vendor = PCI_VENDOR_ID_AMD, + .devices = pci_device_ids, +}; -- cgit v1.2.3