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x86_iommu: move vtd_generate_msi_message in common file 

The vtd_generate_msi_message() in intel-iommu is used to construct a MSI
Message from IRQ. A similar function will be needed when we add interrupt
remapping support in amd-iommu. Moving the function in common file to
avoid the code duplication. Rename it to x86_iommu_irq_to_msi_message().
There is no logic changes in the code flow.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Suggested-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Singh, Brijesh 2018-10-01 19:44:29 +00:00 committed by Michael S. Tsirkin
parent 50662ce16d
commit 35c2450191
4 changed files with 94 additions and 87 deletions
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32
hw/i386/intel_iommu.c
View File

@ -2716,7 +2716,7 @@ static int vtd_irte_get(IntelIOMMUState *iommu, uint16_t index,
/* Fetch IRQ information of specific IR index */
static int vtd_remap_irq_get(IntelIOMMUState *iommu, uint16_t index,
VTDIrq *irq, uint16_t sid)
X86IOMMUIrq *irq, uint16_t sid)
{
VTD_IR_TableEntry irte = {};
int ret = 0;
@ -2745,30 +2745,6 @@ static int vtd_remap_irq_get(IntelIOMMUState *iommu, uint16_t index,
return 0;
}
/* Generate one MSI message from VTDIrq info */
static void vtd_generate_msi_message(VTDIrq *irq, MSIMessage *msg_out)
{
VTD_MSIMessage msg = {};
/* Generate address bits */
msg.dest_mode = irq->dest_mode;
msg.redir_hint = irq->redir_hint;
msg.dest = irq->dest;
msg.__addr_hi = irq->dest & 0xffffff00;
msg.__addr_head = cpu_to_le32(0xfee);
/* Keep this from original MSI address bits */
msg.__not_used = irq->msi_addr_last_bits;
/* Generate data bits */
msg.vector = irq->vector;
msg.delivery_mode = irq->delivery_mode;
msg.level = 1;
msg.trigger_mode = irq->trigger_mode;
msg_out->address = msg.msi_addr;
msg_out->data = msg.msi_data;
}
/* Interrupt remapping for MSI/MSI-X entry */
static int vtd_interrupt_remap_msi(IntelIOMMUState *iommu,
MSIMessage *origin,
@ -2778,7 +2754,7 @@ static int vtd_interrupt_remap_msi(IntelIOMMUState *iommu,
int ret = 0;
VTD_IR_MSIAddress addr;
uint16_t index;
VTDIrq irq = {};
X86IOMMUIrq irq = {};
assert(origin && translated);
@ -2857,8 +2833,8 @@ static int vtd_interrupt_remap_msi(IntelIOMMUState *iommu,
*/
irq.msi_addr_last_bits = addr.addr.__not_care;
/* Translate VTDIrq to MSI message */
vtd_generate_msi_message(&irq, translated);
/* Translate X86IOMMUIrq to MSI message */
x86_iommu_irq_to_msi_message(&irq, translated);
out:
trace_vtd_ir_remap_msi(origin->address, origin->data,

24
hw/i386/x86-iommu.c
View File

@ -53,6 +53,30 @@ void x86_iommu_iec_notify_all(X86IOMMUState *iommu, bool global,
}
}
/* Generate one MSI message from VTDIrq info */
void x86_iommu_irq_to_msi_message(X86IOMMUIrq *irq, MSIMessage *msg_out)
{
X86IOMMU_MSIMessage msg = {};
/* Generate address bits */
msg.dest_mode = irq->dest_mode;
msg.redir_hint = irq->redir_hint;
msg.dest = irq->dest;
msg.__addr_hi = irq->dest & 0xffffff00;
msg.__addr_head = cpu_to_le32(0xfee);
/* Keep this from original MSI address bits */
msg.__not_used = irq->msi_addr_last_bits;
/* Generate data bits */
msg.vector = irq->vector;
msg.delivery_mode = irq->delivery_mode;
msg.level = 1;
msg.trigger_mode = irq->trigger_mode;
msg_out->address = msg.msi_addr;
msg_out->data = msg.msi_data;
}
/* Default X86 IOMMU device */
static X86IOMMUState *x86_iommu_default = NULL;

59
include/hw/i386/intel_iommu.h
View File

@ -66,8 +66,6 @@ typedef struct VTDIOTLBEntry VTDIOTLBEntry;
typedef struct VTDBus VTDBus;
typedef union VTD_IR_TableEntry VTD_IR_TableEntry;
typedef union VTD_IR_MSIAddress VTD_IR_MSIAddress;
typedef struct VTDIrq VTDIrq;
typedef struct VTD_MSIMessage VTD_MSIMessage;
/* Context-Entry */
struct VTDContextEntry {
@ -197,63 +195,6 @@ union VTD_IR_MSIAddress {
uint32_t data;
};
/* Generic IRQ entry information */
struct VTDIrq {
/* Used by both IOAPIC/MSI interrupt remapping */
uint8_t trigger_mode;
uint8_t vector;
uint8_t delivery_mode;
uint32_t dest;
uint8_t dest_mode;
/* only used by MSI interrupt remapping */
uint8_t redir_hint;
uint8_t msi_addr_last_bits;
};
struct VTD_MSIMessage {
union {
struct {
#ifdef HOST_WORDS_BIGENDIAN
uint32_t __addr_head:12; /* 0xfee */
uint32_t dest:8;
uint32_t __reserved:8;
uint32_t redir_hint:1;
uint32_t dest_mode:1;
uint32_t __not_used:2;
#else
uint32_t __not_used:2;
uint32_t dest_mode:1;
uint32_t redir_hint:1;
uint32_t __reserved:8;
uint32_t dest:8;
uint32_t __addr_head:12; /* 0xfee */
#endif
uint32_t __addr_hi;
} QEMU_PACKED;
uint64_t msi_addr;
};
union {
struct {
#ifdef HOST_WORDS_BIGENDIAN
uint16_t trigger_mode:1;
uint16_t level:1;
uint16_t __resved:3;
uint16_t delivery_mode:3;
uint16_t vector:8;
#else
uint16_t vector:8;
uint16_t delivery_mode:3;
uint16_t __resved:3;
uint16_t level:1;
uint16_t trigger_mode:1;
#endif
uint16_t __resved1;
} QEMU_PACKED;
uint32_t msi_data;
};
};
/* When IR is enabled, all MSI/MSI-X data bits should be zero */
#define VTD_IR_MSI_DATA (0)

66
include/hw/i386/x86-iommu.h
View File

@ -22,6 +22,7 @@
#include "hw/sysbus.h"
#include "hw/pci/pci.h"
#include "hw/pci/msi.h"
#define TYPE_X86_IOMMU_DEVICE ("x86-iommu")
#define X86_IOMMU_DEVICE(obj) \
@ -35,6 +36,8 @@
typedef struct X86IOMMUState X86IOMMUState;
typedef struct X86IOMMUClass X86IOMMUClass;
typedef struct X86IOMMUIrq X86IOMMUIrq;
typedef struct X86IOMMU_MSIMessage X86IOMMU_MSIMessage;
typedef enum IommuType {
TYPE_INTEL,
@ -78,6 +81,63 @@ struct X86IOMMUState {
QLIST_HEAD(, IEC_Notifier) iec_notifiers; /* IEC notify list */
};
/* Generic IRQ entry information when interrupt remapping is enabled */
struct X86IOMMUIrq {
/* Used by both IOAPIC/MSI interrupt remapping */
uint8_t trigger_mode;
uint8_t vector;
uint8_t delivery_mode;
uint32_t dest;
uint8_t dest_mode;
/* only used by MSI interrupt remapping */
uint8_t redir_hint;
uint8_t msi_addr_last_bits;
};
struct X86IOMMU_MSIMessage {
union {
struct {
#ifdef HOST_WORDS_BIGENDIAN
uint32_t __addr_head:12; /* 0xfee */
uint32_t dest:8;
uint32_t __reserved:8;
uint32_t redir_hint:1;
uint32_t dest_mode:1;
uint32_t __not_used:2;
#else
uint32_t __not_used:2;
uint32_t dest_mode:1;
uint32_t redir_hint:1;
uint32_t __reserved:8;
uint32_t dest:8;
uint32_t __addr_head:12; /* 0xfee */
#endif
uint32_t __addr_hi;
} QEMU_PACKED;
uint64_t msi_addr;
};
union {
struct {
#ifdef HOST_WORDS_BIGENDIAN
uint16_t trigger_mode:1;
uint16_t level:1;
uint16_t __resved:3;
uint16_t delivery_mode:3;
uint16_t vector:8;
#else
uint16_t vector:8;
uint16_t delivery_mode:3;
uint16_t __resved:3;
uint16_t level:1;
uint16_t trigger_mode:1;
#endif
uint16_t __resved1;
} QEMU_PACKED;
uint32_t msi_data;
};
};
/**
* x86_iommu_get_default - get default IOMMU device
* @return: pointer to default IOMMU device
@ -110,4 +170,10 @@ void x86_iommu_iec_register_notifier(X86IOMMUState *iommu,
void x86_iommu_iec_notify_all(X86IOMMUState *iommu, bool global,
uint32_t index, uint32_t mask);
/**
* x86_iommu_irq_to_msi_message - Populate one MSIMessage from X86IOMMUIrq
* @X86IOMMUIrq: The IRQ information
* @out: Output MSI message
*/
void x86_iommu_irq_to_msi_message(X86IOMMUIrq *irq, MSIMessage *out);
#endif