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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-03 12:03:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-03 12:03:52 -0800
commit269b012321f2f1f8e4648c43a93bf432b42c6668 (patch)
treee30ec565db50d4aec570cb52e9b29bd584beb2fd /include
parentf60a0a79846abed04ad5abddb5dafd14b66e1ab0 (diff)
parent065a6d68c71af2a3bdd080fa5aa353b76eede8f5 (diff)
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu: (89 commits) AMD IOMMU: remove now unnecessary #ifdefs AMD IOMMU: prealloc_protection_domains should be static kvm/iommu: fix compile warning AMD IOMMU: add statistics about total number of map requests AMD IOMMU: add statistics about allocated io memory AMD IOMMU: add stats counter for domain tlb flushes AMD IOMMU: add stats counter for single iommu domain tlb flushes AMD IOMMU: add stats counter for cross-page request AMD IOMMU: add stats counter for free_coherent requests AMD IOMMU: add stats counter for alloc_coherent requests AMD IOMMU: add stats counter for unmap_sg requests AMD IOMMU: add stats counter for map_sg requests AMD IOMMU: add stats counter for unmap_single requests AMD IOMMU: add stats counter for map_single requests AMD IOMMU: add stats counter for completion wait events AMD IOMMU: add init code for statistic collection AMD IOMMU: add necessary header defines for stats counting AMD IOMMU: add Kconfig entry for statistic collection code AMD IOMMU: use dev_name in iommu_enable function AMD IOMMU: use calc_devid in prealloc_protection_domains ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/dma_remapping.h138
-rw-r--r--include/linux/dmar.h1
-rw-r--r--include/linux/intel-iommu.h25
-rw-r--r--include/linux/iommu.h112
-rw-r--r--include/linux/kvm_host.h30
5 files changed, 138 insertions, 168 deletions
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index 952df39c989d..136f170cecc2 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -9,148 +9,16 @@
#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
-#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT)
-#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
-#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
-
-
-/*
- * 0: Present
- * 1-11: Reserved
- * 12-63: Context Ptr (12 - (haw-1))
- * 64-127: Reserved
- */
-struct root_entry {
- u64 val;
- u64 rsvd1;
-};
-#define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry))
-static inline bool root_present(struct root_entry *root)
-{
- return (root->val & 1);
-}
-static inline void set_root_present(struct root_entry *root)
-{
- root->val |= 1;
-}
-static inline void set_root_value(struct root_entry *root, unsigned long value)
-{
- root->val |= value & VTD_PAGE_MASK;
-}
-
-struct context_entry;
-static inline struct context_entry *
-get_context_addr_from_root(struct root_entry *root)
-{
- return (struct context_entry *)
- (root_present(root)?phys_to_virt(
- root->val & VTD_PAGE_MASK) :
- NULL);
-}
-
-/*
- * low 64 bits:
- * 0: present
- * 1: fault processing disable
- * 2-3: translation type
- * 12-63: address space root
- * high 64 bits:
- * 0-2: address width
- * 3-6: aval
- * 8-23: domain id
- */
-struct context_entry {
- u64 lo;
- u64 hi;
-};
-#define context_present(c) ((c).lo & 1)
-#define context_fault_disable(c) (((c).lo >> 1) & 1)
-#define context_translation_type(c) (((c).lo >> 2) & 3)
-#define context_address_root(c) ((c).lo & VTD_PAGE_MASK)
-#define context_address_width(c) ((c).hi & 7)
-#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
-
-#define context_set_present(c) do {(c).lo |= 1;} while (0)
-#define context_set_fault_enable(c) \
- do {(c).lo &= (((u64)-1) << 2) | 1;} while (0)
-#define context_set_translation_type(c, val) \
- do { \
- (c).lo &= (((u64)-1) << 4) | 3; \
- (c).lo |= ((val) & 3) << 2; \
- } while (0)
-#define CONTEXT_TT_MULTI_LEVEL 0
-#define context_set_address_root(c, val) \
- do {(c).lo |= (val) & VTD_PAGE_MASK; } while (0)
-#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
-#define context_set_domain_id(c, val) \
- do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
-#define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0)
-
-/*
- * 0: readable
- * 1: writable
- * 2-6: reserved
- * 7: super page
- * 8-11: available
- * 12-63: Host physcial address
- */
-struct dma_pte {
- u64 val;
-};
-#define dma_clear_pte(p) do {(p).val = 0;} while (0)
-
#define DMA_PTE_READ (1)
#define DMA_PTE_WRITE (2)
-#define dma_set_pte_readable(p) do {(p).val |= DMA_PTE_READ;} while (0)
-#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
-#define dma_set_pte_prot(p, prot) \
- do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
-#define dma_pte_addr(p) ((p).val & VTD_PAGE_MASK)
-#define dma_set_pte_addr(p, addr) do {\
- (p).val |= ((addr) & VTD_PAGE_MASK); } while (0)
-#define dma_pte_present(p) (((p).val & 3) != 0)
-
struct intel_iommu;
+struct dmar_domain;
+struct root_entry;
-struct dmar_domain {
- int id; /* domain id */
- struct intel_iommu *iommu; /* back pointer to owning iommu */
-
- struct list_head devices; /* all devices' list */
- struct iova_domain iovad; /* iova's that belong to this domain */
-
- struct dma_pte *pgd; /* virtual address */
- spinlock_t mapping_lock; /* page table lock */
- int gaw; /* max guest address width */
-
- /* adjusted guest address width, 0 is level 2 30-bit */
- int agaw;
-
-#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
- int 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 */
- u8 bus; /* PCI bus numer */
- u8 devfn; /* PCI devfn number */
- struct pci_dev *dev; /* it's NULL for PCIE-to-PCI bridge */
- struct dmar_domain *domain; /* pointer to domain */
-};
-
-extern int init_dmars(void);
extern void free_dmar_iommu(struct intel_iommu *iommu);
+extern int iommu_calculate_agaw(struct intel_iommu *iommu);
extern int dmar_disabled;
-#ifndef CONFIG_DMAR_GFX_WA
-static inline void iommu_prepare_gfx_mapping(void)
-{
- return;
-}
-#endif /* !CONFIG_DMAR_GFX_WA */
-
#endif
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index f1984fc3e06d..f28440784cf0 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -144,7 +144,6 @@ struct dmar_rmrr_unit {
list_for_each_entry(rmrr, &dmar_rmrr_units, list)
/* Intel DMAR initialization functions */
extern int intel_iommu_init(void);
-extern int dmar_disabled;
#else
static inline int intel_iommu_init(void)
{
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 3d017cfd245b..c4f6c101dbcd 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -23,8 +23,6 @@
#define _INTEL_IOMMU_H_
#include <linux/types.h>
-#include <linux/msi.h>
-#include <linux/sysdev.h>
#include <linux/iova.h>
#include <linux/io.h>
#include <linux/dma_remapping.h>
@@ -289,10 +287,10 @@ struct intel_iommu {
void __iomem *reg; /* Pointer to hardware regs, virtual addr */
u64 cap;
u64 ecap;
- int seg;
u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */
spinlock_t register_lock; /* protect register handling */
int seq_id; /* sequence id of the iommu */
+ int agaw; /* agaw of this iommu */
#ifdef CONFIG_DMAR
unsigned long *domain_ids; /* bitmap of domains */
@@ -302,8 +300,6 @@ struct intel_iommu {
unsigned int irq;
unsigned char name[7]; /* Device Name */
- struct msi_msg saved_msg;
- struct sys_device sysdev;
struct iommu_flush flush;
#endif
struct q_inval *qi; /* Queued invalidation info */
@@ -334,25 +330,6 @@ extern int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
-void intel_iommu_domain_exit(struct dmar_domain *domain);
-struct dmar_domain *intel_iommu_domain_alloc(struct pci_dev *pdev);
-int intel_iommu_context_mapping(struct dmar_domain *domain,
- struct pci_dev *pdev);
-int intel_iommu_page_mapping(struct dmar_domain *domain, dma_addr_t iova,
- u64 hpa, size_t size, int prot);
-void intel_iommu_detach_dev(struct dmar_domain *domain, u8 bus, u8 devfn);
-struct dmar_domain *intel_iommu_find_domain(struct pci_dev *pdev);
-u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova);
-
-#ifdef CONFIG_DMAR
-int intel_iommu_found(void);
-#else /* CONFIG_DMAR */
-static inline int intel_iommu_found(void)
-{
- return 0;
-}
-#endif /* CONFIG_DMAR */
-
extern void *intel_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
extern void intel_free_coherent(struct device *, size_t, void *, dma_addr_t);
extern dma_addr_t intel_map_single(struct device *, phys_addr_t, size_t, int);
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
new file mode 100644
index 000000000000..8a7bfb1b6ca0
--- /dev/null
+++ b/include/linux/iommu.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2007-2008 Advanced Micro Devices, Inc.
+ * Author: Joerg Roedel <joerg.roedel@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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
+ */
+
+#ifndef __LINUX_IOMMU_H
+#define __LINUX_IOMMU_H
+
+#define IOMMU_READ (1)
+#define IOMMU_WRITE (2)
+
+struct device;
+
+struct iommu_domain {
+ void *priv;
+};
+
+struct iommu_ops {
+ int (*domain_init)(struct iommu_domain *domain);
+ void (*domain_destroy)(struct iommu_domain *domain);
+ int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
+ void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
+ int (*map)(struct iommu_domain *domain, unsigned long iova,
+ phys_addr_t paddr, size_t size, int prot);
+ void (*unmap)(struct iommu_domain *domain, unsigned long iova,
+ size_t size);
+ phys_addr_t (*iova_to_phys)(struct iommu_domain *domain,
+ unsigned long iova);
+};
+
+#ifdef CONFIG_IOMMU_API
+
+extern void register_iommu(struct iommu_ops *ops);
+extern bool iommu_found(void);
+extern struct iommu_domain *iommu_domain_alloc(void);
+extern void iommu_domain_free(struct iommu_domain *domain);
+extern int iommu_attach_device(struct iommu_domain *domain,
+ struct device *dev);
+extern void iommu_detach_device(struct iommu_domain *domain,
+ struct device *dev);
+extern int iommu_map_range(struct iommu_domain *domain, unsigned long iova,
+ phys_addr_t paddr, size_t size, int prot);
+extern void iommu_unmap_range(struct iommu_domain *domain, unsigned long iova,
+ size_t size);
+extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
+ unsigned long iova);
+
+#else /* CONFIG_IOMMU_API */
+
+static inline void register_iommu(struct iommu_ops *ops)
+{
+}
+
+static inline bool iommu_found(void)
+{
+ return false;
+}
+
+static inline struct iommu_domain *iommu_domain_alloc(void)
+{
+ return NULL;
+}
+
+static inline void iommu_domain_free(struct iommu_domain *domain)
+{
+}
+
+static inline int iommu_attach_device(struct iommu_domain *domain,
+ struct device *dev)
+{
+ return -ENODEV;
+}
+
+static inline void iommu_detach_device(struct iommu_domain *domain,
+ struct device *dev)
+{
+}
+
+static inline int iommu_map_range(struct iommu_domain *domain,
+ unsigned long iova, phys_addr_t paddr,
+ size_t size, int prot)
+{
+ return -ENODEV;
+}
+
+static inline void iommu_unmap_range(struct iommu_domain *domain,
+ unsigned long iova, size_t size)
+{
+}
+
+static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
+ unsigned long iova)
+{
+ return 0;
+}
+
+#endif /* CONFIG_IOMMU_API */
+
+#endif /* __LINUX_IOMMU_H */
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index eafabd5c66b2..ec49d0be7f52 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -316,6 +316,7 @@ struct kvm_assigned_dev_kernel {
#define KVM_ASSIGNED_DEV_HOST_MSI (1 << 9)
unsigned long irq_requested_type;
int irq_source_id;
+ int flags;
struct pci_dev *dev;
struct kvm *kvm;
};
@@ -327,13 +328,16 @@ void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
int kvm_request_irq_source_id(struct kvm *kvm);
void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
-#ifdef CONFIG_DMAR
+#ifdef CONFIG_IOMMU_API
int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
unsigned long npages);
-int kvm_iommu_map_guest(struct kvm *kvm,
- struct kvm_assigned_dev_kernel *assigned_dev);
+int kvm_iommu_map_guest(struct kvm *kvm);
int kvm_iommu_unmap_guest(struct kvm *kvm);
-#else /* CONFIG_DMAR */
+int kvm_assign_device(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev);
+int kvm_deassign_device(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev);
+#else /* CONFIG_IOMMU_API */
static inline int kvm_iommu_map_pages(struct kvm *kvm,
gfn_t base_gfn,
unsigned long npages)
@@ -341,9 +345,7 @@ static inline int kvm_iommu_map_pages(struct kvm *kvm,
return 0;
}
-static inline int kvm_iommu_map_guest(struct kvm *kvm,
- struct kvm_assigned_dev_kernel
- *assigned_dev)
+static inline int kvm_iommu_map_guest(struct kvm *kvm)
{
return -ENODEV;
}
@@ -352,7 +354,19 @@ static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
{
return 0;
}
-#endif /* CONFIG_DMAR */
+
+static inline int kvm_assign_device(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev)
+{
+ return 0;
+}
+
+static inline int kvm_deassign_device(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev)
+{
+ return 0;
+}
+#endif /* CONFIG_IOMMU_API */
static inline void kvm_guest_enter(void)
{