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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/include/hw/i386/intel_iommu.h
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/include/hw/i386/intel_iommu.h')
-rw-r--r--qemu/include/hw/i386/intel_iommu.h120
1 files changed, 120 insertions, 0 deletions
diff --git a/qemu/include/hw/i386/intel_iommu.h b/qemu/include/hw/i386/intel_iommu.h
new file mode 100644
index 000000000..e321ee4fb
--- /dev/null
+++ b/qemu/include/hw/i386/intel_iommu.h
@@ -0,0 +1,120 @@
+/*
+ * QEMU emulation of an Intel IOMMU (VT-d)
+ * (DMA Remapping device)
+ *
+ * Copyright (C) 2013 Knut Omang, Oracle <knut.omang@oracle.com>
+ * Copyright (C) 2014 Le Tan, <tamlokveer@gmail.com>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef INTEL_IOMMU_H
+#define INTEL_IOMMU_H
+#include "hw/qdev.h"
+#include "sysemu/dma.h"
+
+#define TYPE_INTEL_IOMMU_DEVICE "intel-iommu"
+#define INTEL_IOMMU_DEVICE(obj) \
+ OBJECT_CHECK(IntelIOMMUState, (obj), TYPE_INTEL_IOMMU_DEVICE)
+
+/* DMAR Hardware Unit Definition address (IOMMU unit) */
+#define Q35_HOST_BRIDGE_IOMMU_ADDR 0xfed90000ULL
+
+#define VTD_PCI_BUS_MAX 256
+#define VTD_PCI_SLOT_MAX 32
+#define VTD_PCI_FUNC_MAX 8
+#define VTD_PCI_DEVFN_MAX 256
+#define VTD_PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
+#define VTD_PCI_FUNC(devfn) ((devfn) & 0x07)
+#define VTD_SID_TO_BUS(sid) (((sid) >> 8) & 0xff)
+#define VTD_SID_TO_DEVFN(sid) ((sid) & 0xff)
+
+#define DMAR_REG_SIZE 0x230
+#define VTD_HOST_ADDRESS_WIDTH 39
+#define VTD_HAW_MASK ((1ULL << VTD_HOST_ADDRESS_WIDTH) - 1)
+
+typedef struct VTDContextEntry VTDContextEntry;
+typedef struct VTDContextCacheEntry VTDContextCacheEntry;
+typedef struct IntelIOMMUState IntelIOMMUState;
+typedef struct VTDAddressSpace VTDAddressSpace;
+typedef struct VTDIOTLBEntry VTDIOTLBEntry;
+
+/* Context-Entry */
+struct VTDContextEntry {
+ uint64_t lo;
+ uint64_t hi;
+};
+
+struct VTDContextCacheEntry {
+ /* The cache entry is obsolete if
+ * context_cache_gen!=IntelIOMMUState.context_cache_gen
+ */
+ uint32_t context_cache_gen;
+ struct VTDContextEntry context_entry;
+};
+
+struct VTDAddressSpace {
+ uint8_t bus_num;
+ uint8_t devfn;
+ AddressSpace as;
+ MemoryRegion iommu;
+ IntelIOMMUState *iommu_state;
+ VTDContextCacheEntry context_cache_entry;
+};
+
+struct VTDIOTLBEntry {
+ uint64_t gfn;
+ uint16_t domain_id;
+ uint64_t slpte;
+ bool read_flags;
+ bool write_flags;
+};
+
+/* The iommu (DMAR) device state struct */
+struct IntelIOMMUState {
+ SysBusDevice busdev;
+ MemoryRegion csrmem;
+ uint8_t csr[DMAR_REG_SIZE]; /* register values */
+ uint8_t wmask[DMAR_REG_SIZE]; /* R/W bytes */
+ uint8_t w1cmask[DMAR_REG_SIZE]; /* RW1C(Write 1 to Clear) bytes */
+ uint8_t womask[DMAR_REG_SIZE]; /* WO (write only - read returns 0) */
+ uint32_t version;
+
+ dma_addr_t root; /* Current root table pointer */
+ bool root_extended; /* Type of root table (extended or not) */
+ bool dmar_enabled; /* Set if DMA remapping is enabled */
+
+ uint16_t iq_head; /* Current invalidation queue head */
+ uint16_t iq_tail; /* Current invalidation queue tail */
+ dma_addr_t iq; /* Current invalidation queue pointer */
+ uint16_t iq_size; /* IQ Size in number of entries */
+ bool qi_enabled; /* Set if the QI is enabled */
+ uint8_t iq_last_desc_type; /* The type of last completed descriptor */
+
+ /* The index of the Fault Recording Register to be used next.
+ * Wraps around from N-1 to 0, where N is the number of FRCD_REG.
+ */
+ uint16_t next_frcd_reg;
+
+ uint64_t cap; /* The value of capability reg */
+ uint64_t ecap; /* The value of extended capability reg */
+
+ uint32_t context_cache_gen; /* Should be in [1,MAX] */
+ GHashTable *iotlb; /* IOTLB */
+
+ MemoryRegionIOMMUOps iommu_ops;
+ VTDAddressSpace **address_spaces[VTD_PCI_BUS_MAX];
+};
+
+#endif