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authorMarshall Dawson <marshalldawson3rd@gmail.com>2019-05-03 12:55:16 -0600
committerMartin Roth <martinroth@google.com>2019-06-06 18:52:07 +0000
commitec63a7140a3326fa177114a7253c74039ab07454 (patch)
tree3e6c597e0ad6ef5aed9145bfaa2ffa03cc742316 /src/soc/amd/common
parent43c26cb07fa42e6d5013f2e6bcb4e05522d24c1b (diff)
downloadcoreboot-ec63a7140a3326fa177114a7253c74039ab07454.tar.xz
soc/amd/stoneyridge: Move IOMMU support to common
BUG=b:131682806 Change-Id: Icb02180645c9e7e6dc973438c777228b031b3f54 Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32657 Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/common')
-rw-r--r--src/soc/amd/common/block/iommu/Kconfig5
-rw-r--r--src/soc/amd/common/block/iommu/Makefile.inc1
-rw-r--r--src/soc/amd/common/block/iommu/iommu.c59
3 files changed, 65 insertions, 0 deletions
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 <r.marek@assembler.cz>
+ *
+ * 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 <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <lib.h>
+
+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,
+};