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authorFurquan Shaikh <furquan@google.com>2020-07-08 16:54:40 -0700
committerAaron Durbin <adurbin@chromium.org>2020-07-10 16:00:20 +0000
commit0c707d4dbc0753b5e40559b8940c6cb2afd80e4d (patch)
tree425262673c7993034f76137bfc89ccb545646d93 /src
parentcff479e930c20d56312c8f041d1e4f3318293b03 (diff)
downloadcoreboot-0c707d4dbc0753b5e40559b8940c6cb2afd80e4d.tar.xz
soc/amd/picasso: Add PCI driver for data fabric devices
Data fabric devices are PCI devices which support PCI configuration space but do not require any MMIO/IO resources. This change adds a PCI driver for the data fabric devices which only provides device operations for adding node to SSDT and returning the ACPI name for the device. Signed-off-by: Furquan Shaikh <furquan@google.com> Change-Id: I3da9287db5febf1a1d7eb1dfbed9f1348f80a588 Reviewed-on: https://review.coreboot.org/c/coreboot/+/43314 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src')
-rw-r--r--src/soc/amd/picasso/Makefile.inc2
-rw-r--r--src/soc/amd/picasso/data_fabric.c (renamed from src/soc/amd/picasso/data_fabric_util.c)52
2 files changed, 53 insertions, 1 deletions
diff --git a/src/soc/amd/picasso/Makefile.inc b/src/soc/amd/picasso/Makefile.inc
index b6c0ddb915..d19402f79d 100644
--- a/src/soc/amd/picasso/Makefile.inc
+++ b/src/soc/amd/picasso/Makefile.inc
@@ -52,7 +52,7 @@ verstage_x86-y += reset.c
ramstage-y += i2c.c
ramstage-y += chip.c
ramstage-y += cpu.c
-ramstage-y += data_fabric_util.c
+ramstage-y += data_fabric.c
ramstage-y += root_complex.c
ramstage-y += mca.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c
diff --git a/src/soc/amd/picasso/data_fabric_util.c b/src/soc/amd/picasso/data_fabric.c
index a375b84477..23cb94c837 100644
--- a/src/soc/amd/picasso/data_fabric_util.c
+++ b/src/soc/amd/picasso/data_fabric.c
@@ -1,7 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
+#include <acpi/acpi_device.h>
#include <console/console.h>
#include <cpu/x86/lapic_def.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <soc/data_fabric.h>
#include <soc/iomap.h>
@@ -115,3 +119,51 @@ void data_fabric_set_mmio_np(void)
(IOMS0_FABRIC_ID << MMIO_DST_FABRIC_ID_SHIFT) | MMIO_NP | MMIO_WE
| MMIO_RE);
}
+
+static const char *data_fabric_acpi_name(const struct device *dev)
+{
+ switch (dev->device) {
+ case PCI_DEVICE_ID_AMD_FAM17H_DF0:
+ return "DFD0";
+ case PCI_DEVICE_ID_AMD_FAM17H_DF1:
+ return "DFD1";
+ case PCI_DEVICE_ID_AMD_FAM17H_DF2:
+ return "DFD2";
+ case PCI_DEVICE_ID_AMD_FAM17H_DF3:
+ return "DFD3";
+ case PCI_DEVICE_ID_AMD_FAM17H_DF4:
+ return "DFD4";
+ case PCI_DEVICE_ID_AMD_FAM17H_DF5:
+ return "DFD5";
+ case PCI_DEVICE_ID_AMD_FAM17H_DF6:
+ return "DFD6";
+ default:
+ printk(BIOS_ERR, "%s: Unhandled device id 0x%x\n", __func__, dev->device);
+ }
+
+ return NULL;
+}
+
+static struct device_operations data_fabric_ops = {
+ .read_resources = noop_read_resources,
+ .set_resources = noop_set_resources,
+ .acpi_name = data_fabric_acpi_name,
+ .acpi_fill_ssdt = acpi_device_write_pci_dev,
+};
+
+static const unsigned short pci_device_ids[] = {
+ PCI_DEVICE_ID_AMD_FAM17H_DF0,
+ PCI_DEVICE_ID_AMD_FAM17H_DF1,
+ PCI_DEVICE_ID_AMD_FAM17H_DF2,
+ PCI_DEVICE_ID_AMD_FAM17H_DF3,
+ PCI_DEVICE_ID_AMD_FAM17H_DF4,
+ PCI_DEVICE_ID_AMD_FAM17H_DF5,
+ PCI_DEVICE_ID_AMD_FAM17H_DF6,
+ 0
+};
+
+static const struct pci_driver data_fabric_driver __pci_driver = {
+ .ops = &data_fabric_ops,
+ .vendor = PCI_VENDOR_ID_AMD,
+ .devices = pci_device_ids,
+};