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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-24 23:10:38 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-24 23:10:38 +0300
commit18b8bfdfbae5821a7df691bc1e542bbab6c31e9c (patch)
tree4c7c1d942c71b19fc6430e4acbe5b2f5967ab93d /include
parentd972604f6f87478212f012af5560c4fd4bb2b01d (diff)
parent6488a7f35eeab463f6c9c2ea34d30ca856f0bc8e (diff)
downloadlinux-18b8bfdfbae5821a7df691bc1e542bbab6c31e9c.tar.xz
Merge tag 'iommu-updates-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel: - PASID table handling updates for the Intel VT-d driver. It implements a global PASID space now so that applications usings multiple devices will just have one PASID. - A new config option to make iommu passthroug mode the default. - New sysfs attribute for iommu groups to export the type of the default domain. - A debugfs interface (for debug only) usable by IOMMU drivers to export internals to user-space. - R-Car Gen3 SoCs support for the ipmmu-vmsa driver - The ARM-SMMU now aborts transactions from unknown devices and devices not attached to any domain. - Various cleanups and smaller fixes all over the place. * tag 'iommu-updates-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (42 commits) iommu/omap: Fix cache flushes on L2 table entries iommu: Remove the ->map_sg indirection iommu/arm-smmu-v3: Abort all transactions if SMMU is enabled in kdump kernel iommu/arm-smmu-v3: Prevent any devices access to memory without registration iommu/ipmmu-vmsa: Don't register as BUS IOMMU if machine doesn't have IPMMU-VMSA iommu/ipmmu-vmsa: Clarify supported platforms iommu/ipmmu-vmsa: Fix allocation in atomic context iommu: Add config option to set passthrough as default iommu: Add sysfs attribyte for domain type iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register iommu/arm-smmu: Error out only if not enough context interrupts iommu/io-pgtable-arm-v7s: Abort allocation when table address overflows the PTE iommu/io-pgtable-arm: Fix pgtable allocation in selftest iommu/vt-d: Remove the obsolete per iommu pasid tables iommu/vt-d: Apply per pci device pasid table in SVA iommu/vt-d: Allocate and free pasid table iommu/vt-d: Per PCI device pasid table interfaces iommu/vt-d: Add for_each_device_domain() helper iommu/vt-d: Move device_domain_info to header iommu/vt-d: Apply global PASID in SVA ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/dmar.h5
-rw-r--r--include/linux/intel-iommu.h80
-rw-r--r--include/linux/iommu.h23
-rw-r--r--include/linux/platform_data/sh_ipmmu.h18
4 files changed, 82 insertions, 44 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index e2433bc50210..843a41ba7e28 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -265,11 +265,6 @@ static inline void dmar_copy_shared_irte(struct irte *dst, struct irte *src)
#define PDA_LOW_BIT 26
#define PDA_HIGH_BIT 32
-enum {
- IRQ_REMAP_XAPIC_MODE,
- IRQ_REMAP_X2APIC_MODE,
-};
-
/* Can't use the common MSI interrupt functions
* since DMAR is not a pci device
*/
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index ef169d67df92..28004d74ae04 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -31,6 +31,7 @@
#include <linux/list.h>
#include <linux/iommu.h>
#include <linux/io-64-nonatomic-lo-hi.h>
+#include <linux/dmar.h>
#include <asm/cacheflush.h>
#include <asm/iommu.h>
@@ -114,6 +115,7 @@
* Extended Capability Register
*/
+#define ecap_dit(e) ((e >> 41) & 0x1)
#define ecap_pasid(e) ((e >> 40) & 0x1)
#define ecap_pss(e) ((e >> 35) & 0x1f)
#define ecap_eafs(e) ((e >> 34) & 0x1)
@@ -284,6 +286,7 @@ enum {
#define QI_DEV_IOTLB_SID(sid) ((u64)((sid) & 0xffff) << 32)
#define QI_DEV_IOTLB_QDEP(qdep) (((qdep) & 0x1f) << 16)
#define QI_DEV_IOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK)
+#define QI_DEV_IOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52))
#define QI_DEV_IOTLB_SIZE 1
#define QI_DEV_IOTLB_MAX_INVS 32
@@ -308,6 +311,7 @@ enum {
#define QI_DEV_EIOTLB_PASID(p) (((u64)p) << 32)
#define QI_DEV_EIOTLB_SID(sid) ((u64)((sid) & 0xffff) << 16)
#define QI_DEV_EIOTLB_QDEP(qd) ((u64)((qd) & 0x1f) << 4)
+#define QI_DEV_EIOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52))
#define QI_DEV_EIOTLB_MAX_INVS 32
#define QI_PGRP_IDX(idx) (((u64)(idx)) << 55)
@@ -385,6 +389,42 @@ struct pasid_entry;
struct pasid_state_entry;
struct page_req_dsc;
+struct dmar_domain {
+ int nid; /* node id */
+
+ unsigned iommu_refcnt[DMAR_UNITS_SUPPORTED];
+ /* Refcount of devices per iommu */
+
+
+ u16 iommu_did[DMAR_UNITS_SUPPORTED];
+ /* Domain ids per IOMMU. Use u16 since
+ * domain ids are 16 bit wide according
+ * to VT-d spec, section 9.3 */
+
+ bool has_iotlb_device;
+ struct list_head devices; /* all devices' list */
+ struct iova_domain iovad; /* iova's that belong to this domain */
+
+ struct dma_pte *pgd; /* virtual address */
+ int gaw; /* max guest address width */
+
+ /* adjusted guest address width, 0 is level 2 30-bit */
+ int agaw;
+
+ int flags; /* flags to find out type of domain */
+
+ int iommu_coherency;/* indicate coherency of iommu access */
+ int iommu_snooping; /* indicate snooping control feature*/
+ int iommu_count; /* reference count of iommu */
+ int iommu_superpage;/* Level of superpages supported:
+ 0 == 4KiB (no superpages), 1 == 2MiB,
+ 2 == 1GiB, 3 == 512GiB, 4 == 1TiB */
+ u64 max_addr; /* maximum mapped address */
+
+ struct iommu_domain domain; /* generic domain data structure for
+ iommu core */
+};
+
struct intel_iommu {
void __iomem *reg; /* Pointer to hardware regs, virtual addr */
u64 reg_phys; /* physical address of hw register set */
@@ -414,11 +454,9 @@ struct intel_iommu {
* devices away to userspace processes (e.g. for DPDK) and don't
* want to trust that userspace will use *only* the PASID it was
* 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 page_req_dsc *prq;
unsigned char prq_name[16]; /* Name for PRQ interrupt */
- struct idr pasid_idr;
u32 pasid_max;
#endif
struct q_inval *qi; /* Queued invalidation info */
@@ -434,6 +472,27 @@ struct intel_iommu {
u32 flags; /* Software defined flags */
};
+/* PCI domain-device relationship */
+struct device_domain_info {
+ struct list_head link; /* link to domain siblings */
+ struct list_head global; /* link to global list */
+ struct list_head table; /* link to pasid table */
+ u8 bus; /* PCI bus number */
+ u8 devfn; /* PCI devfn number */
+ u16 pfsid; /* SRIOV physical function source ID */
+ u8 pasid_supported:3;
+ u8 pasid_enabled:1;
+ u8 pri_supported:1;
+ u8 pri_enabled:1;
+ u8 ats_supported:1;
+ u8 ats_enabled:1;
+ u8 ats_qdep;
+ struct device *dev; /* it's NULL for PCIe-to-PCI bridge */
+ struct intel_iommu *iommu; /* IOMMU used by this device */
+ struct dmar_domain *domain; /* pointer to domain */
+ struct pasid_table *pasid_table; /* pasid table */
+};
+
static inline void __iommu_flush_cache(
struct intel_iommu *iommu, void *addr, int size)
{
@@ -453,16 +512,22 @@ extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
u8 fm, u64 type);
extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
unsigned int size_order, u64 type);
-extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
- u64 addr, unsigned mask);
-
+extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid,
+ u16 qdep, u64 addr, unsigned mask);
extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
extern int dmar_ir_support(void);
+struct dmar_domain *get_valid_domain_for_dev(struct device *dev);
+void *alloc_pgtable_page(int node);
+void free_pgtable_page(void *vaddr);
+struct intel_iommu *domain_get_iommu(struct dmar_domain *domain);
+int for_each_device_domain(int (*fn)(struct device_domain_info *info,
+ void *data), void *data);
+
#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);
+int intel_svm_init(struct intel_iommu *iommu);
+int intel_svm_exit(struct intel_iommu *iommu);
extern int intel_svm_enable_prq(struct intel_iommu *iommu);
extern int intel_svm_finish_prq(struct intel_iommu *iommu);
@@ -486,6 +551,7 @@ struct intel_svm {
int flags;
int pasid;
struct list_head devs;
+ struct list_head list;
};
extern int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct intel_svm_dev *sdev);
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 19938ee6eb31..87994c265bf5 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -166,8 +166,6 @@ struct iommu_resv_region {
* @detach_dev: detach device from an iommu domain
* @map: map a physically contiguous memory region to an iommu domain
* @unmap: unmap a physically contiguous memory region from an iommu domain
- * @map_sg: map a scatter-gather list of physically contiguous memory chunks
- * to an iommu domain
* @flush_tlb_all: Synchronously flush all hardware TLBs for this domain
* @tlb_range_add: Add a given iova range to the flush queue for this domain
* @tlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
@@ -201,8 +199,6 @@ struct iommu_ops {
phys_addr_t paddr, size_t size, int prot);
size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
size_t size);
- size_t (*map_sg)(struct iommu_domain *domain, unsigned long iova,
- struct scatterlist *sg, unsigned int nents, int prot);
void (*flush_iotlb_all)(struct iommu_domain *domain);
void (*iotlb_range_add)(struct iommu_domain *domain,
unsigned long iova, size_t size);
@@ -303,9 +299,8 @@ extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova,
size_t size);
extern size_t iommu_unmap_fast(struct iommu_domain *domain,
unsigned long iova, size_t size);
-extern size_t default_iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
- struct scatterlist *sg,unsigned int nents,
- int prot);
+extern size_t iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
+ struct scatterlist *sg,unsigned int nents, int prot);
extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova);
extern void iommu_set_fault_handler(struct iommu_domain *domain,
iommu_fault_handler_t handler, void *token);
@@ -378,13 +373,6 @@ static inline void iommu_tlb_sync(struct iommu_domain *domain)
domain->ops->iotlb_sync(domain);
}
-static inline size_t iommu_map_sg(struct iommu_domain *domain,
- unsigned long iova, struct scatterlist *sg,
- unsigned int nents, int prot)
-{
- return domain->ops->map_sg(domain, iova, sg, nents, prot);
-}
-
/* PCI device grouping function */
extern struct iommu_group *pci_device_group(struct device *dev);
/* Generic device grouping function */
@@ -698,4 +686,11 @@ const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
#endif /* CONFIG_IOMMU_API */
+#ifdef CONFIG_IOMMU_DEBUGFS
+extern struct dentry *iommu_debugfs_dir;
+void iommu_debugfs_setup(void);
+#else
+static inline void iommu_debugfs_setup(void) {}
+#endif
+
#endif /* __LINUX_IOMMU_H */
diff --git a/include/linux/platform_data/sh_ipmmu.h b/include/linux/platform_data/sh_ipmmu.h
deleted file mode 100644
index 39f7405cdac5..000000000000
--- a/include/linux/platform_data/sh_ipmmu.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* sh_ipmmu.h
- *
- * Copyright (C) 2012 Hideki EIRAKU
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- */
-
-#ifndef __SH_IPMMU_H__
-#define __SH_IPMMU_H__
-
-struct shmobile_ipmmu_platform_data {
- const char * const *dev_names;
- unsigned int num_dev_names;
-};
-
-#endif /* __SH_IPMMU_H__ */