#include <linux/interrupt.h>
#include <linux/tboot.h>
#include <linux/dmi.h>
+#include <linux/slab.h>
#define PREFIX "DMAR: "
int ret = 0;
drhd = (struct acpi_dmar_hardware_unit *)header;
- if (!drhd->address) {
- /* Promote an attitude of violence to a BIOS engineer today */
- WARN(1, "Your BIOS is broken; DMAR reported at address zero!\n"
- "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
- dmi_get_system_info(DMI_BIOS_VENDOR),
- dmi_get_system_info(DMI_BIOS_VERSION),
- dmi_get_system_info(DMI_PRODUCT_VERSION));
- return -ENODEV;
- }
dmaru = kzalloc(sizeof(*dmaru), GFP_KERNEL);
if (!dmaru)
return -ENOMEM;
}
#endif
+#ifdef CONFIG_ACPI_NUMA
+static int __init
+dmar_parse_one_rhsa(struct acpi_dmar_header *header)
+{
+ struct acpi_dmar_rhsa *rhsa;
+ struct dmar_drhd_unit *drhd;
+
+ rhsa = (struct acpi_dmar_rhsa *)header;
+ for_each_drhd_unit(drhd) {
+ if (drhd->reg_base_addr == rhsa->base_address) {
+ int node = acpi_map_pxm_to_node(rhsa->proximity_domain);
+
+ if (!node_online(node))
+ node = -1;
+ drhd->iommu->node = node;
+ return 0;
+ }
+ }
+ WARN(1, "Your BIOS is broken; RHSA refers to non-existent DMAR unit at %llx\n"
+ "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+ drhd->reg_base_addr,
+ dmi_get_system_info(DMI_BIOS_VENDOR),
+ dmi_get_system_info(DMI_BIOS_VERSION),
+ dmi_get_system_info(DMI_PRODUCT_VERSION));
+
+ return 0;
+}
+#endif
+
static void __init
dmar_table_print_dmar_entry(struct acpi_dmar_header *header)
{
#endif
break;
case ACPI_DMAR_HARDWARE_AFFINITY:
- /* We don't do anything with RHSA (yet?) */
+#ifdef CONFIG_ACPI_NUMA
+ ret = dmar_parse_one_rhsa(entry_header);
+#endif
break;
default:
printk(KERN_WARNING PREFIX
return 0;
}
+static int bios_warned;
+
+int __init check_zero_address(void)
+{
+ struct acpi_table_dmar *dmar;
+ struct acpi_dmar_header *entry_header;
+ struct acpi_dmar_hardware_unit *drhd;
+
+ dmar = (struct acpi_table_dmar *)dmar_tbl;
+ entry_header = (struct acpi_dmar_header *)(dmar + 1);
+
+ while (((unsigned long)entry_header) <
+ (((unsigned long)dmar) + dmar_tbl->length)) {
+ /* Avoid looping forever on bad ACPI tables */
+ if (entry_header->length == 0) {
+ printk(KERN_WARNING PREFIX
+ "Invalid 0-length structure\n");
+ return 0;
+ }
+
+ if (entry_header->type == ACPI_DMAR_TYPE_HARDWARE_UNIT) {
+ void __iomem *addr;
+ u64 cap, ecap;
+
+ drhd = (void *)entry_header;
+ if (!drhd->address) {
+ /* Promote an attitude of violence to a BIOS engineer today */
+ WARN(1, "Your BIOS is broken; DMAR reported at address zero!\n"
+ "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+ dmi_get_system_info(DMI_BIOS_VENDOR),
+ dmi_get_system_info(DMI_BIOS_VERSION),
+ dmi_get_system_info(DMI_PRODUCT_VERSION));
+ bios_warned = 1;
+ goto failed;
+ }
+
+ addr = early_ioremap(drhd->address, VTD_PAGE_SIZE);
+ if (!addr ) {
+ printk("IOMMU: can't validate: %llx\n", drhd->address);
+ goto failed;
+ }
+ cap = dmar_readq(addr + DMAR_CAP_REG);
+ ecap = dmar_readq(addr + DMAR_ECAP_REG);
+ early_iounmap(addr, VTD_PAGE_SIZE);
+ if (cap == (uint64_t)-1 && ecap == (uint64_t)-1) {
+ /* Promote an attitude of violence to a BIOS engineer today */
+ WARN(1, "Your BIOS is broken; DMAR reported at address %llx returns all ones!\n"
+ "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+ drhd->address,
+ dmi_get_system_info(DMI_BIOS_VENDOR),
+ dmi_get_system_info(DMI_BIOS_VERSION),
+ dmi_get_system_info(DMI_PRODUCT_VERSION));
+ bios_warned = 1;
+ goto failed;
+ }
+ }
+
+ entry_header = ((void *)entry_header + entry_header->length);
+ }
+ return 1;
+
+failed:
+#ifdef CONFIG_DMAR
+ dmar_disabled = 1;
+#endif
+ return 0;
+}
+
void __init detect_intel_iommu(void)
{
int ret;
ret = dmar_table_detect();
-
+ if (ret)
+ ret = check_zero_address();
{
#ifdef CONFIG_INTR_REMAP
struct acpi_table_dmar *dmar;
"x2apic and Intr-remapping.\n");
#endif
#ifdef CONFIG_DMAR
- if (ret && !no_iommu && !iommu_detected && !swiotlb &&
- !dmar_disabled) {
+ if (ret && !no_iommu && !iommu_detected && !dmar_disabled) {
iommu_detected = 1;
/* Make sure ACS will be enabled */
pci_request_acs();
}
#endif
+#ifdef CONFIG_X86
+ if (ret)
+ x86_init.iommu.iommu_init = intel_iommu_init;
+#endif
}
early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
dmar_tbl = NULL;
int agaw = 0;
int msagaw = 0;
+ if (!drhd->reg_base_addr) {
+ if (!bios_warned) {
+ WARN(1, "Your BIOS is broken; DMAR reported at address zero!\n"
+ "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+ dmi_get_system_info(DMI_BIOS_VENDOR),
+ dmi_get_system_info(DMI_BIOS_VERSION),
+ dmi_get_system_info(DMI_PRODUCT_VERSION));
+ bios_warned = 1;
+ }
+ return -EINVAL;
+ }
+
iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
if (!iommu)
return -ENOMEM;
iommu->ecap = dmar_readq(iommu->reg + DMAR_ECAP_REG);
if (iommu->cap == (uint64_t)-1 && iommu->ecap == (uint64_t)-1) {
- /* Promote an attitude of violence to a BIOS engineer today */
- WARN(1, "Your BIOS is broken; DMAR reported at address %llx returns all ones!\n"
- "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
- drhd->reg_base_addr,
- dmi_get_system_info(DMI_BIOS_VENDOR),
- dmi_get_system_info(DMI_BIOS_VERSION),
- dmi_get_system_info(DMI_PRODUCT_VERSION));
+ if (!bios_warned) {
+ /* Promote an attitude of violence to a BIOS engineer today */
+ WARN(1, "Your BIOS is broken; DMAR reported at address %llx returns all ones!\n"
+ "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+ drhd->reg_base_addr,
+ dmi_get_system_info(DMI_BIOS_VENDOR),
+ dmi_get_system_info(DMI_BIOS_VERSION),
+ dmi_get_system_info(DMI_PRODUCT_VERSION));
+ bios_warned = 1;
+ }
goto err_unmap;
}
iommu->agaw = agaw;
iommu->msagaw = msagaw;
+ iommu->node = -1;
+
/* the registers might be more than one page */
map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap),
cap_max_fault_reg_offset(iommu->cap));
int dmar_enable_qi(struct intel_iommu *iommu)
{
struct q_inval *qi;
+ struct page *desc_page;
if (!ecap_qis(iommu->ecap))
return -ENOENT;
qi = iommu->qi;
- qi->desc = (void *)(get_zeroed_page(GFP_ATOMIC));
- if (!qi->desc) {
+
+ desc_page = alloc_pages_node(iommu->node, GFP_ATOMIC | __GFP_ZERO, 0);
+ if (!desc_page) {
kfree(qi);
iommu->qi = 0;
return -ENOMEM;
}
+ qi->desc = page_address(desc_page);
+
qi->desc_status = kmalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC);
if (!qi->desc_status) {
free_page((unsigned long) qi->desc);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff