aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/pci/dmar.c89
-rw-r--r--drivers/pci/intel-iommu.c10
-rw-r--r--drivers/pci/intel-iommu.h2
-rw-r--r--include/linux/dmar.h10
4 files changed, 88 insertions, 23 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 1a59423a8ed..158bc5bfcf7 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -174,19 +174,37 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
struct acpi_dmar_hardware_unit *drhd;
struct dmar_drhd_unit *dmaru;
int ret = 0;
- static int include_all;
dmaru = kzalloc(sizeof(*dmaru), GFP_KERNEL);
if (!dmaru)
return -ENOMEM;
+ dmaru->hdr = header;
drhd = (struct acpi_dmar_hardware_unit *)header;
dmaru->reg_base_addr = drhd->address;
dmaru->include_all = drhd->flags & 0x1; /* BIT0: INCLUDE_ALL */
+ ret = alloc_iommu(dmaru);
+ if (ret) {
+ kfree(dmaru);
+ return ret;
+ }
+ dmar_register_drhd_unit(dmaru);
+ return 0;
+}
+
+static int __init
+dmar_parse_dev(struct dmar_drhd_unit *dmaru)
+{
+ struct acpi_dmar_hardware_unit *drhd;
+ static int include_all;
+ int ret;
+
+ drhd = (struct acpi_dmar_hardware_unit *) dmaru->hdr;
+
if (!dmaru->include_all)
ret = dmar_parse_dev_scope((void *)(drhd + 1),
- ((void *)drhd) + header->length,
+ ((void *)drhd) + drhd->header.length,
&dmaru->devices_cnt, &dmaru->devices,
drhd->segment);
else {
@@ -199,10 +217,10 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
include_all = 1;
}
- if (ret || (dmaru->devices_cnt == 0 && !dmaru->include_all))
+ if (ret || (dmaru->devices_cnt == 0 && !dmaru->include_all)) {
+ list_del(&dmaru->list);
kfree(dmaru);
- else
- dmar_register_drhd_unit(dmaru);
+ }
return ret;
}
@@ -211,23 +229,35 @@ dmar_parse_one_rmrr(struct acpi_dmar_header *header)
{
struct acpi_dmar_reserved_memory *rmrr;
struct dmar_rmrr_unit *rmrru;
- int ret = 0;
rmrru = kzalloc(sizeof(*rmrru), GFP_KERNEL);
if (!rmrru)
return -ENOMEM;
+ rmrru->hdr = header;
rmrr = (struct acpi_dmar_reserved_memory *)header;
rmrru->base_address = rmrr->base_address;
rmrru->end_address = rmrr->end_address;
+
+ dmar_register_rmrr_unit(rmrru);
+ return 0;
+}
+
+static int __init
+rmrr_parse_dev(struct dmar_rmrr_unit *rmrru)
+{
+ struct acpi_dmar_reserved_memory *rmrr;
+ int ret;
+
+ rmrr = (struct acpi_dmar_reserved_memory *) rmrru->hdr;
ret = dmar_parse_dev_scope((void *)(rmrr + 1),
- ((void *)rmrr) + header->length,
+ ((void *)rmrr) + rmrr->header.length,
&rmrru->devices_cnt, &rmrru->devices, rmrr->segment);
- if (ret || (rmrru->devices_cnt == 0))
+ if (ret || (rmrru->devices_cnt == 0)) {
+ list_del(&rmrru->list);
kfree(rmrru);
- else
- dmar_register_rmrr_unit(rmrru);
+ }
return ret;
}
@@ -333,15 +363,42 @@ dmar_find_matched_drhd_unit(struct pci_dev *dev)
return NULL;
}
+int __init dmar_dev_scope_init(void)
+{
+ struct dmar_drhd_unit *drhd;
+ struct dmar_rmrr_unit *rmrr;
+ int ret = -ENODEV;
+
+ for_each_drhd_unit(drhd) {
+ ret = dmar_parse_dev(drhd);
+ if (ret)
+ return ret;
+ }
+
+ for_each_rmrr_units(rmrr) {
+ ret = rmrr_parse_dev(rmrr);
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
int __init dmar_table_init(void)
{
-
+ static int dmar_table_initialized;
int ret;
+ if (dmar_table_initialized)
+ return 0;
+
+ dmar_table_initialized = 1;
+
ret = parse_dmar_table();
if (ret) {
- printk(KERN_INFO PREFIX "parse DMAR table failure.\n");
+ if (ret != -ENODEV)
+ printk(KERN_INFO PREFIX "parse DMAR table failure.\n");
return ret;
}
@@ -377,7 +434,7 @@ int __init early_dmar_detect(void)
return (ACPI_SUCCESS(status) ? 1 : 0);
}
-struct intel_iommu *alloc_iommu(struct dmar_drhd_unit *drhd)
+int alloc_iommu(struct dmar_drhd_unit *drhd)
{
struct intel_iommu *iommu;
int map_size;
@@ -386,7 +443,7 @@ struct intel_iommu *alloc_iommu(struct dmar_drhd_unit *drhd)
iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
if (!iommu)
- return NULL;
+ return -ENOMEM;
iommu->seq_id = iommu_allocated++;
@@ -419,10 +476,10 @@ struct intel_iommu *alloc_iommu(struct dmar_drhd_unit *drhd)
spin_lock_init(&iommu->register_lock);
drhd->iommu = iommu;
- return iommu;
+ return 0;
error:
kfree(iommu);
- return NULL;
+ return -1;
}
void free_iommu(struct intel_iommu *iommu)
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 4d59a6a1f4d..218a1f357b4 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1665,11 +1665,8 @@ int __init init_dmars(void)
for_each_drhd_unit(drhd) {
if (drhd->ignored)
continue;
- iommu = alloc_iommu(drhd);
- if (!iommu) {
- ret = -ENOMEM;
- goto error;
- }
+
+ iommu = drhd->iommu;
ret = iommu_init_domains(iommu);
if (ret)
@@ -2324,6 +2321,9 @@ int __init intel_iommu_init(void)
if (dmar_table_init())
return -ENODEV;
+ if (dmar_dev_scope_init())
+ return -ENODEV;
+
iommu_init_mempool();
dmar_init_reserved_ranges();
diff --git a/drivers/pci/intel-iommu.h b/drivers/pci/intel-iommu.h
index 75c63f65b3f..371e3b9caf3 100644
--- a/drivers/pci/intel-iommu.h
+++ b/drivers/pci/intel-iommu.h
@@ -199,7 +199,7 @@ struct intel_iommu {
extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev);
-extern struct intel_iommu *alloc_iommu(struct dmar_drhd_unit *drhd);
+extern int alloc_iommu(struct dmar_drhd_unit *drhd);
extern void free_iommu(struct intel_iommu *iommu);
#endif
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 56c73b84755..3ab07e42558 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -46,12 +46,14 @@ extern int intel_iommu_init(void);
extern int dmar_table_init(void);
extern int early_dmar_detect(void);
+extern int dmar_dev_scope_init(void);
extern struct list_head dmar_drhd_units;
extern struct list_head dmar_rmrr_units;
struct dmar_drhd_unit {
struct list_head list; /* list of drhd units */
+ struct acpi_dmar_header *hdr; /* ACPI header */
u64 reg_base_addr; /* register base address*/
struct pci_dev **devices; /* target device array */
int devices_cnt; /* target device count */
@@ -62,6 +64,7 @@ struct dmar_drhd_unit {
struct dmar_rmrr_unit {
struct list_head list; /* list of rmrr units */
+ struct acpi_dmar_header *hdr; /* ACPI header */
u64 base_address; /* reserved base address*/
u64 end_address; /* reserved end address */
struct pci_dev **devices; /* target devices */
@@ -72,6 +75,8 @@ struct dmar_rmrr_unit {
list_for_each_entry(drhd, &dmar_drhd_units, list)
#define for_each_rmrr_units(rmrr) \
list_for_each_entry(rmrr, &dmar_rmrr_units, list)
+
+extern int alloc_iommu(struct dmar_drhd_unit *);
#else
static inline void detect_intel_iommu(void)
{
@@ -81,6 +86,9 @@ static inline int intel_iommu_init(void)
{
return -ENODEV;
}
-
+static inline int dmar_table_init(void)
+{
+ return -ENODEV;
+}
#endif /* !CONFIG_DMAR */
#endif /* __DMAR_H__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 02:58:43 +0000