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authorDavid Woodhouse <David.Woodhouse@intel.com>2015-09-09 13:40:47 +0300
committerDavid Woodhouse <David.Woodhouse@intel.com>2015-10-15 14:55:45 +0300
commit2f26e0a9c9860db290d63e9d85c2c8c09813677f (patch)
tree6a3712f991b9ae60b8eaece608c355b66fd3e5b5 /include/linux/intel-iommu.h
parentb16d0cb9e2fc5c311948c660dd6f4b59a9ccd333 (diff)
downloadlinux-2f26e0a9c9860db290d63e9d85c2c8c09813677f.tar.xz
iommu/vt-d: Add basic SVM PASID support
This provides basic PASID support for endpoint devices, tested with a version of the i915 driver. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include/linux/intel-iommu.h')
-rw-r--r--include/linux/intel-iommu.h68
1 files changed, 63 insertions, 5 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 0f38e60d40ad..46add607567b 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -1,5 +1,9 @@
/*
- * Copyright (c) 2006, Intel Corporation.
+ * Copyright © 2006-2015, Intel Corporation.
+ *
+ * Authors: Ashok Raj <ashok.raj@intel.com>
+ * Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
+ * David Woodhouse <David.Woodhouse@intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -13,10 +17,6 @@
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Copyright (C) 2006-2008 Intel Corporation
- * Author: Ashok Raj <ashok.raj@intel.com>
- * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
*/
#ifndef _INTEL_IOMMU_H_
@@ -25,7 +25,10 @@
#include <linux/types.h>
#include <linux/iova.h>
#include <linux/io.h>
+#include <linux/idr.h>
#include <linux/dma_remapping.h>
+#include <linux/mmu_notifier.h>
+#include <linux/list.h>
#include <asm/cacheflush.h>
#include <asm/iommu.h>
@@ -251,6 +254,9 @@ enum {
#define QI_DIOTLB_TYPE 0x3
#define QI_IEC_TYPE 0x4
#define QI_IWD_TYPE 0x5
+#define QI_EIOTLB_TYPE 0x6
+#define QI_PC_TYPE 0x7
+#define QI_DEIOTLB_TYPE 0x8
#define QI_IEC_SELECTIVE (((u64)1) << 4)
#define QI_IEC_IIDEX(idx) (((u64)(idx & 0xffff) << 32))
@@ -278,6 +284,34 @@ enum {
#define QI_DEV_IOTLB_SIZE 1
#define QI_DEV_IOTLB_MAX_INVS 32
+#define QI_PC_PASID(pasid) (((u64)pasid) << 32)
+#define QI_PC_DID(did) (((u64)did) << 16)
+#define QI_PC_GRAN(gran) (((u64)gran) << 4)
+
+#define QI_PC_ALL_PASIDS (QI_PC_TYPE | QI_PC_GRAN(0))
+#define QI_PC_PASID_SEL (QI_PC_TYPE | QI_PC_GRAN(1))
+
+#define QI_EIOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK)
+#define QI_EIOTLB_GL(gl) (((u64)gl) << 7)
+#define QI_EIOTLB_IH(ih) (((u64)ih) << 6)
+#define QI_EIOTLB_AM(am) (((u64)am))
+#define QI_EIOTLB_PASID(pasid) (((u64)pasid) << 32)
+#define QI_EIOTLB_DID(did) (((u64)did) << 16)
+#define QI_EIOTLB_GRAN(gran) (((u64)gran) << 4)
+
+#define QI_DEV_EIOTLB_ADDR(a) ((u64)(a) & VTD_PAGE_MASK)
+#define QI_DEV_EIOTLB_SIZE (((u64)1) << 11)
+#define QI_DEV_EIOTLB_GLOB(g) ((u64)g)
+#define QI_DEV_EIOTLB_PASID(p) (((u64)p) << 32)
+#define QI_DEV_EIOTLB_SID(sid) ((u64)((sid) & 0xffff) << 32)
+#define QI_DEV_EIOTLB_QDEP(qd) (((qd) & 0x1f) << 16)
+#define QI_DEV_EIOTLB_MAX_INVS 32
+
+#define QI_GRAN_ALL_ALL 0
+#define QI_GRAN_NONG_ALL 1
+#define QI_GRAN_NONG_PASID 2
+#define QI_GRAN_PSI_PASID 3
+
struct qi_desc {
u64 low, high;
};
@@ -359,6 +393,7 @@ struct intel_iommu {
* told to. But while it's all driver-arbitrated, we're fine. */
struct pasid_entry *pasid_table;
struct pasid_state_entry *pasid_state_table;
+ struct idr pasid_idr;
#endif
struct q_inval *qi; /* Queued invalidation info */
u32 *iommu_state; /* Store iommu states between suspend and resume.*/
@@ -399,9 +434,32 @@ extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
extern int dmar_ir_support(void);
+#ifdef CONFIG_INTEL_IOMMU_SVM
extern int intel_svm_alloc_pasid_tables(struct intel_iommu *iommu);
extern int intel_svm_free_pasid_tables(struct intel_iommu *iommu);
+struct intel_svm_dev {
+ struct list_head list;
+ struct rcu_head rcu;
+ struct device *dev;
+ int users;
+ u16 did;
+ u16 dev_iotlb:1;
+ u16 sid, qdep;
+};
+
+struct intel_svm {
+ struct mmu_notifier notifier;
+ struct mm_struct *mm;
+ struct intel_iommu *iommu;
+ int pasid;
+ struct list_head devs;
+};
+
+extern int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct intel_svm_dev *sdev);
+extern struct intel_iommu *intel_svm_device_to_iommu(struct device *dev);
+#endif
+
extern const struct attribute_group *intel_iommu_groups[];
#endif