tests/x86: Update ACPI info by looking for interrupt remapping hardware
This will tell if the hardware target support Intel VT-D or not.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
diff --git a/tests/arch/x86/info/src/acpi.c b/tests/arch/x86/info/src/acpi.c
index 332e548..8af1d4d 100644
--- a/tests/arch/x86/info/src/acpi.c
+++ b/tests/arch/x86/info/src/acpi.c
@@ -6,6 +6,121 @@
#include <zephyr.h>
#include <arch/x86/acpi.h>
+static void vtd_dev_scope_info(struct acpi_dmar_dev_scope *dev_scope)
+{
+ struct acpi_dmar_dev_path *path;
+ int n_path;
+
+ printk("\t\t\t. Type: ");
+
+ switch (dev_scope->type) {
+ case ACPI_DRHD_DEV_SCOPE_PCI_EPD:
+ printk("PCI Endpoint");
+ break;
+ case ACPI_DRHD_DEV_SCOPE_PCI_SUB_H:
+ printk("PCI Sub-hierarchy");
+ break;
+ case ACPI_DRHD_DEV_SCOPE_IOAPIC:
+ printk("IOAPIC");
+ break;
+ case ACPI_DRHD_DEV_SCOPE_MSI_CAP_HPET:
+ printk("MSI Capable HPET");
+ break;
+ case ACPI_DRHD_DEV_SCOPE_NAMESPACE_DEV:
+ printk("ACPI name-space enumerated");
+ break;
+ default:
+ printk("unknown\n");
+ return;
+ }
+
+ printk("\n");
+
+ printk("\t\t\t. Enumeration ID %u\n", dev_scope->enumeration_id);
+ printk("\t\t\t. PCI Bus %u\n", dev_scope->start_bus_num);
+
+ path = z_acpi_get_dev_scope_paths(dev_scope, &n_path);
+ for (; n_path > 0; n_path--) {
+ printk("\t\t\t. Path D:%u F:%u\n",
+ path->device, path->function);
+ path = (struct acpi_dmar_dev_path *)(POINTER_TO_UINT(path) +
+ ACPI_DMAR_DEV_PATH_SIZE);
+ }
+
+ printk("\n");
+}
+
+static void vtd_drhd_info(struct acpi_drhd *drhd)
+{
+ struct acpi_dmar_dev_scope *dev_scope;
+ int n_ds, i;
+
+ if (drhd->flags & ACPI_DRHD_FLAG_INCLUDE_PCI_ALL) {
+ printk("\t\t- Includes all PCI devices");
+ } else {
+ printk("\t\t- Includes only listed PCI devices");
+ }
+
+ printk(" under given Segment\n");
+
+ printk("\t\t- Segment number %u\n", drhd->segment_num);
+ printk("\t\t- Base Address 0x%llx\n", drhd->base_address);
+
+ dev_scope = z_acpi_get_drhd_dev_scopes(drhd, &n_ds);
+ if (dev_scope == NULL) {
+ printk("\t\t- No device scopes\n");
+ return;
+ }
+
+ printk("\t\t- Device Scopes:\n");
+ for (i = 0; i < n_ds; i++) {
+ vtd_dev_scope_info(dev_scope);
+ dev_scope = (struct acpi_dmar_dev_scope *)(
+ POINTER_TO_UINT(dev_scope) + dev_scope->length);
+ }
+
+ printk("\n");
+}
+
+static void vtd_info(void)
+{
+ struct acpi_dmar *dmar;
+
+ dmar = z_acpi_find_dmar();
+ if (dmar == NULL) {
+ printk("\tIntel VT-D not supported or exposed\n");
+ return;
+ }
+
+ printk("\tIntel VT-D Supported:\n");
+
+ printk("\t-> X2APIC ");
+ if (dmar->flags & ACPI_DMAR_FLAG_X2APIC_OPT_OUT) {
+ printk("should be opted out\n");
+ } else {
+ printk("does not need to be opted out\n");
+ }
+
+ if (dmar->flags & ACPI_DMAR_FLAG_INTR_REMAP) {
+ struct acpi_drhd *drhd;
+ int hw_n, i;
+
+ printk("\t-> Interrupt remapping supported\n");
+
+ drhd = z_acpi_find_drhds(&hw_n);
+ printk("\t-> %u remapping hardware found:\n", hw_n);
+
+ for (i = 0; i < hw_n; i++) {
+ printk("\t\tDRHD %u:\n", i);
+ vtd_drhd_info(drhd);
+ drhd = (struct acpi_drhd *)(POINTER_TO_UINT(drhd) +
+ drhd->entry.length);
+ }
+ } else {
+ printk("\t-> Interrupt remapping not supported\n");
+ }
+}
+
void acpi(void)
{
int nr_cpus;
@@ -26,4 +141,8 @@
}
printk("\n");
+
+ vtd_info();
+
+ printk("\n");
}
