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memory/iommu: QOM'fy IOMMU MemoryRegion

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This defines new QOM object - IOMMUMemoryRegion - with MemoryRegion
as a parent.

This moves IOMMU-related fields from MR to IOMMU MR. However to avoid
dymanic QOM casting in fast path (address_space_translate, etc),
this adds an @is_iommu boolean flag to MR and provides new helper to
do simple cast to IOMMU MR - memory_region_get_iommu. The flag
is set in the instance init callback. This defines
memory_region_is_iommu as memory_region_get_iommu()!=NULL.

This switches MemoryRegion to IOMMUMemoryRegion in most places except
the ones where MemoryRegion may be an alias.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20170711035620.4232-2-aik@ozlabs.ru>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2017-07-11 13:56:19 +10:00 committed by Paolo Bonzini
parent 98fab4c163
commit 3df9d74806
20 changed files with 170 additions and 109 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
exec.c
View File

@ -480,18 +480,18 @@ static MemoryRegionSection address_space_do_translate(AddressSpace *as,
{
IOMMUTLBEntry iotlb;
MemoryRegionSection *section;
MemoryRegion *mr;
IOMMUMemoryRegion *iommu_mr;
for (;;) {
AddressSpaceDispatch *d = atomic_rcu_read(&as->dispatch);
section = address_space_translate_internal(d, addr, &addr, plen, is_mmio);
mr = section->mr;
if (!mr->iommu_ops) {
iommu_mr = memory_region_get_iommu(section->mr);
if (!iommu_mr) {
break;
}
iotlb = mr->iommu_ops->translate(mr, addr, is_write ?
iotlb = iommu_mr->iommu_ops->translate(iommu_mr, addr, is_write ?
IOMMU_WO : IOMMU_RO);
addr = ((iotlb.translated_addr & ~iotlb.addr_mask)
| (addr & iotlb.addr_mask));
@ -588,7 +588,7 @@ address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr addr,
section = address_space_translate_internal(d, addr, xlat, plen, false);
assert(!section->mr->iommu_ops);
assert(!memory_region_is_iommu(section->mr));
return section;
}
#endif

8
hw/alpha/typhoon.c
View File

@ -41,7 +41,7 @@ typedef struct TyphoonPchip {
MemoryRegion reg_conf;
AddressSpace iommu_as;
MemoryRegion iommu;
IOMMUMemoryRegion iommu;
uint64_t ctl;
TyphoonWindow win[4];
@ -663,7 +663,8 @@ static bool window_translate(TyphoonWindow *win, hwaddr addr,
/* Handle PCI-to-system address translation. */
/* TODO: A translation failure here ought to set PCI error codes on the
Pchip and generate a machine check interrupt. */
static IOMMUTLBEntry typhoon_translate_iommu(MemoryRegion *iommu, hwaddr addr,
static IOMMUTLBEntry typhoon_translate_iommu(IOMMUMemoryRegion *iommu,
hwaddr addr,
IOMMUAccessFlags flag)
{
TyphoonPchip *pchip = container_of(iommu, TyphoonPchip, iommu);
@ -893,7 +894,8 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
/* Host memory as seen from the PCI side, via the IOMMU. */
memory_region_init_iommu(&s->pchip.iommu, OBJECT(s), &typhoon_iommu_ops,
"iommu-typhoon", UINT64_MAX);
address_space_init(&s->pchip.iommu_as, &s->pchip.iommu, "pchip0-pci");
address_space_init(&s->pchip.iommu_as, MEMORY_REGION(&s->pchip.iommu),
"pchip0-pci");
pci_setup_iommu(b, typhoon_pci_dma_iommu, s);
/* Pchip0 PCI special/interrupt acknowledge, 0x801.F800.0000, 64MB. */

8
hw/dma/rc4030.c
View File

@ -90,7 +90,7 @@ typedef struct rc4030State
qemu_irq jazz_bus_irq;
/* whole DMA memory region, root of DMA address space */
MemoryRegion dma_mr;
IOMMUMemoryRegion dma_mr;
AddressSpace dma_as;
MemoryRegion iomem_chipset;
@ -488,7 +488,7 @@ static const MemoryRegionOps jazzio_ops = {
.endianness = DEVICE_NATIVE_ENDIAN,
};
static IOMMUTLBEntry rc4030_dma_translate(MemoryRegion *iommu, hwaddr addr,
static IOMMUTLBEntry rc4030_dma_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
IOMMUAccessFlags flag)
{
rc4030State *s = container_of(iommu, rc4030State, dma_mr);
@ -679,7 +679,7 @@ static void rc4030_realize(DeviceState *dev, Error **errp)
memory_region_init_iommu(&s->dma_mr, o, &rc4030_dma_ops,
"rc4030.dma", UINT32_MAX);
address_space_init(&s->dma_as, &s->dma_mr, "rc4030-dma");
address_space_init(&s->dma_as, MEMORY_REGION(&s->dma_mr), "rc4030-dma");
}
static void rc4030_unrealize(DeviceState *dev, Error **errp)
@ -717,7 +717,7 @@ static void rc4030_register_types(void)
type_init(rc4030_register_types)
DeviceState *rc4030_init(rc4030_dma **dmas, MemoryRegion **dma_mr)
DeviceState *rc4030_init(rc4030_dma **dmas, IOMMUMemoryRegion **dma_mr)
{
DeviceState *dev;

9
hw/i386/amd_iommu.c
View File

@ -52,7 +52,7 @@ struct AMDVIAddressSpace {
uint8_t bus_num; /* bus number */
uint8_t devfn; /* device function */
AMDVIState *iommu_state; /* AMDVI - one per machine */
MemoryRegion iommu; /* Device's address translation region */
IOMMUMemoryRegion iommu; /* Device's address translation region */
MemoryRegion iommu_ir; /* Device's interrupt remapping region */
AddressSpace as; /* device's corresponding address space */
};
@ -987,7 +987,7 @@ static inline bool amdvi_is_interrupt_addr(hwaddr addr)
return addr >= AMDVI_INT_ADDR_FIRST && addr <= AMDVI_INT_ADDR_LAST;
}
static IOMMUTLBEntry amdvi_translate(MemoryRegion *iommu, hwaddr addr,
static IOMMUTLBEntry amdvi_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
IOMMUAccessFlags flag)
{
AMDVIAddressSpace *as = container_of(iommu, AMDVIAddressSpace, iommu);
@ -1046,7 +1046,8 @@ static AddressSpace *amdvi_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
memory_region_init_iommu(&iommu_as[devfn]->iommu, OBJECT(s),
&s->iommu_ops, "amd-iommu", UINT64_MAX);
address_space_init(&iommu_as[devfn]->as, &iommu_as[devfn]->iommu,
address_space_init(&iommu_as[devfn]->as,
MEMORY_REGION(&iommu_as[devfn]->iommu),
"amd-iommu");
}
return &iommu_as[devfn]->as;
@ -1067,7 +1068,7 @@ static const MemoryRegionOps mmio_mem_ops = {
}
};
static void amdvi_iommu_notify_flag_changed(MemoryRegion *iommu,
static void amdvi_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu,
IOMMUNotifierFlag old,
IOMMUNotifierFlag new)
{

17
hw/i386/intel_iommu.c
View File

@ -972,9 +972,9 @@ static bool vtd_switch_address_space(VTDAddressSpace *as)
/* Turn off first then on the other */
if (use_iommu) {
memory_region_set_enabled(&as->sys_alias, false);
memory_region_set_enabled(&as->iommu, true);
memory_region_set_enabled(MEMORY_REGION(&as->iommu), true);
} else {
memory_region_set_enabled(&as->iommu, false);
memory_region_set_enabled(MEMORY_REGION(&as->iommu), false);
memory_region_set_enabled(&as->sys_alias, true);
}
@ -1366,7 +1366,7 @@ static void vtd_iotlb_domain_invalidate(IntelIOMMUState *s, uint16_t domain_id)
static int vtd_page_invalidate_notify_hook(IOMMUTLBEntry *entry,
void *private)
{
memory_region_notify_iommu((MemoryRegion *)private, *entry);
memory_region_notify_iommu((IOMMUMemoryRegion *)private, *entry);
return 0;
}
@ -2264,7 +2264,7 @@ static void vtd_mem_write(void *opaque, hwaddr addr,
}
}
static IOMMUTLBEntry vtd_iommu_translate(MemoryRegion *iommu, hwaddr addr,
static IOMMUTLBEntry vtd_iommu_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
IOMMUAccessFlags flag)
{
VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu);
@ -2303,7 +2303,7 @@ static IOMMUTLBEntry vtd_iommu_translate(MemoryRegion *iommu, hwaddr addr,
return iotlb;
}
static void vtd_iommu_notify_flag_changed(MemoryRegion *iommu,
static void vtd_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu,
IOMMUNotifierFlag old,
IOMMUNotifierFlag new)
{
@ -2736,7 +2736,8 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn)
memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,
&vtd_dev_as->sys_alias, 1);
memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,
&vtd_dev_as->iommu, 1);
MEMORY_REGION(&vtd_dev_as->iommu),
1);
vtd_switch_address_space(vtd_dev_as);
}
return vtd_dev_as;
@ -2816,9 +2817,9 @@ static int vtd_replay_hook(IOMMUTLBEntry *entry, void *private)
return 0;
}
static void vtd_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n)
static void vtd_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
{
VTDAddressSpace *vtd_as = container_of(mr, VTDAddressSpace, iommu);
VTDAddressSpace *vtd_as = container_of(iommu_mr, VTDAddressSpace, iommu);
IntelIOMMUState *s = vtd_as->iommu_state;
uint8_t bus_n = pci_bus_num(vtd_as->bus);
VTDContextEntry ce;

2
hw/mips/mips_jazz.c
View File

@ -130,7 +130,7 @@ static void mips_jazz_init(MachineState *machine,
CPUMIPSState *env;
qemu_irq *i8259;
rc4030_dma *dmas;
MemoryRegion *rc4030_dma_mr;
IOMMUMemoryRegion *rc4030_dma_mr;
MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
MemoryRegion *isa_io = g_new(MemoryRegion, 1);
MemoryRegion *rtc = g_new(MemoryRegion, 1);

6
hw/pci-host/apb.c
View File

@ -123,7 +123,7 @@ do { printf("IOMMU: " fmt , ## __VA_ARGS__); } while (0)
typedef struct IOMMUState {
AddressSpace iommu_as;
MemoryRegion iommu;
IOMMUMemoryRegion iommu;
uint64_t regs[IOMMU_NREGS];
} IOMMUState;
@ -208,7 +208,7 @@ static AddressSpace *pbm_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
}
/* Called from RCU critical section */
static IOMMUTLBEntry pbm_translate_iommu(MemoryRegion *iommu, hwaddr addr,
static IOMMUTLBEntry pbm_translate_iommu(IOMMUMemoryRegion *iommu, hwaddr addr,
IOMMUAccessFlags flag)
{
IOMMUState *is = container_of(iommu, IOMMUState, iommu);
@ -699,7 +699,7 @@ PCIBus *pci_apb_init(hwaddr special_base,
memory_region_init_iommu(&is->iommu, OBJECT(dev), &pbm_iommu_ops,
"iommu-apb", UINT64_MAX);
address_space_init(&is->iommu_as, &is->iommu, "pbm-as");
address_space_init(&is->iommu_as, MEMORY_REGION(&is->iommu), "pbm-as");
pci_setup_iommu(phb->bus, pbm_pci_dma_iommu, is);
/* APB secondary busses */

16
hw/ppc/spapr_iommu.c
View File

@ -110,7 +110,8 @@ static void spapr_tce_free_table(uint64_t *table, int fd, uint32_t nb_table)
}
/* Called from RCU critical section */
static IOMMUTLBEntry spapr_tce_translate_iommu(MemoryRegion *iommu, hwaddr addr,
static IOMMUTLBEntry spapr_tce_translate_iommu(IOMMUMemoryRegion *iommu,
hwaddr addr,
IOMMUAccessFlags flag)
{
sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu);
@ -150,14 +151,14 @@ static void spapr_tce_table_pre_save(void *opaque)
tcet->bus_offset, tcet->page_shift);
}
static uint64_t spapr_tce_get_min_page_size(MemoryRegion *iommu)
static uint64_t spapr_tce_get_min_page_size(IOMMUMemoryRegion *iommu)
{
sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu);
return 1ULL << tcet->page_shift;
}
static void spapr_tce_notify_flag_changed(MemoryRegion *iommu,
static void spapr_tce_notify_flag_changed(IOMMUMemoryRegion *iommu,
IOMMUNotifierFlag old,
IOMMUNotifierFlag new)
{
@ -348,9 +349,10 @@ void spapr_tce_table_enable(sPAPRTCETable *tcet,
&tcet->fd,
tcet->need_vfio);
memory_region_set_size(&tcet->iommu,
memory_region_set_size(MEMORY_REGION(&tcet->iommu),
(uint64_t)tcet->nb_table << tcet->page_shift);
memory_region_add_subregion(&tcet->root, tcet->bus_offset, &tcet->iommu);
memory_region_add_subregion(&tcet->root, tcet->bus_offset,
MEMORY_REGION(&tcet->iommu));
}
void spapr_tce_table_disable(sPAPRTCETable *tcet)
@ -359,8 +361,8 @@ void spapr_tce_table_disable(sPAPRTCETable *tcet)
return;
}
memory_region_del_subregion(&tcet->root, &tcet->iommu);
memory_region_set_size(&tcet->iommu, 0);
memory_region_del_subregion(&tcet->root, MEMORY_REGION(&tcet->iommu));
memory_region_set_size(MEMORY_REGION(&tcet->iommu), 0);
spapr_tce_free_table(tcet->table, tcet->fd, tcet->nb_table);
tcet->fd = -1;

6
hw/s390x/s390-pci-bus.c
View File

@ -356,7 +356,7 @@ out:
return pte;
}
static IOMMUTLBEntry s390_translate_iommu(MemoryRegion *mr, hwaddr addr,
static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,
IOMMUAccessFlags flag)
{
uint64_t pte;
@ -525,14 +525,14 @@ void s390_pci_iommu_enable(S390PCIIOMMU *iommu)
memory_region_init_iommu(&iommu->iommu_mr, OBJECT(&iommu->mr),
&s390_iommu_ops, name, iommu->pal + 1);
iommu->enabled = true;
memory_region_add_subregion(&iommu->mr, 0, &iommu->iommu_mr);
memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu_mr));
g_free(name);
}
void s390_pci_iommu_disable(S390PCIIOMMU *iommu)
{
iommu->enabled = false;
memory_region_del_subregion(&iommu->mr, &iommu->iommu_mr);
memory_region_del_subregion(&iommu->mr, MEMORY_REGION(&iommu->iommu_mr));
object_unparent(OBJECT(&iommu->iommu_mr));
}

2
hw/s390x/s390-pci-bus.h
View File

@ -266,7 +266,7 @@ typedef struct S390PCIIOMMU {
S390PCIBusDevice *pbdev;
AddressSpace as;
MemoryRegion mr;
MemoryRegion iommu_mr;
IOMMUMemoryRegion iommu_mr;
bool enabled;
uint64_t g_iota;
uint64_t pba;

8
hw/s390x/s390-pci-inst.c
View File

@ -563,7 +563,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
S390PCIIOMMU *iommu;
hwaddr start, end;
IOMMUTLBEntry entry;
MemoryRegion *mr;
IOMMUMemoryRegion *iommu_mr;
cpu_synchronize_state(CPU(cpu));
@ -622,9 +622,9 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
goto out;
}
mr = &iommu->iommu_mr;
iommu_mr = &iommu->iommu_mr;
while (start < end) {
entry = mr->iommu_ops->translate(mr, start, IOMMU_NONE);
entry = iommu_mr->iommu_ops->translate(iommu_mr, start, IOMMU_NONE);
if (!entry.translated_addr) {
pbdev->state = ZPCI_FS_ERROR;
@ -635,7 +635,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
goto out;
}
memory_region_notify_iommu(mr, entry);
memory_region_notify_iommu(iommu_mr, entry);
start += entry.addr_mask + 1;
}

12
hw/vfio/common.c
View File

@ -479,6 +479,7 @@ static void vfio_listener_region_add(MemoryListener *listener,
if (memory_region_is_iommu(section->mr)) {
VFIOGuestIOMMU *giommu;
IOMMUMemoryRegion *iommu_mr = IOMMU_MEMORY_REGION(section->mr);
trace_vfio_listener_region_add_iommu(iova, end);
/*
@ -488,7 +489,7 @@ static void vfio_listener_region_add(MemoryListener *listener,
* device emulation the VFIO iommu handles to use).
*/
giommu = g_malloc0(sizeof(*giommu));
giommu->iommu = section->mr;
giommu->iommu = iommu_mr;
giommu->iommu_offset = section->offset_within_address_space -
section->offset_within_region;
giommu->container = container;
@ -501,7 +502,7 @@ static void vfio_listener_region_add(MemoryListener *listener,
int128_get64(llend));
QLIST_INSERT_HEAD(&container->giommu_list, giommu, giommu_next);
memory_region_register_iommu_notifier(giommu->iommu, &giommu->n);
memory_region_register_iommu_notifier(section->mr, &giommu->n);
memory_region_iommu_replay(giommu->iommu, &giommu->n);
return;
@ -569,9 +570,9 @@ static void vfio_listener_region_del(MemoryListener *listener,
VFIOGuestIOMMU *giommu;
QLIST_FOREACH(giommu, &container->giommu_list, giommu_next) {
if (giommu->iommu == section->mr &&
if (MEMORY_REGION(giommu->iommu) == section->mr &&
giommu->n.start == section->offset_within_region) {
memory_region_unregister_iommu_notifier(giommu->iommu,
memory_region_unregister_iommu_notifier(section->mr,
&giommu->n);
QLIST_REMOVE(giommu, giommu_next);
g_free(giommu);
@ -1163,7 +1164,8 @@ static void vfio_disconnect_container(VFIOGroup *group)
QLIST_REMOVE(container, next);
QLIST_FOREACH_SAFE(giommu, &container->giommu_list, giommu_next, tmp) {
memory_region_unregister_iommu_notifier(giommu->iommu, &giommu->n);
memory_region_unregister_iommu_notifier(
MEMORY_REGION(giommu->iommu), &giommu->n);
QLIST_REMOVE(giommu, giommu_next);
g_free(giommu);
}

3
hw/vfio/spapr.c
View File

@ -143,7 +143,8 @@ int vfio_spapr_create_window(VFIOContainer *container,
hwaddr *pgsize)
{
int ret;
unsigned pagesize = memory_region_iommu_get_min_page_size(section->mr);
IOMMUMemoryRegion *iommu_mr = IOMMU_MEMORY_REGION(section->mr);
unsigned pagesize = memory_region_iommu_get_min_page_size(iommu_mr);
unsigned entries, pages;
struct vfio_iommu_spapr_tce_create create = { .argsz = sizeof(create) };

55
include/exec/memory.h
View File

@ -35,6 +35,10 @@
#define MEMORY_REGION(obj) \
OBJECT_CHECK(MemoryRegion, (obj), TYPE_MEMORY_REGION)
#define TYPE_IOMMU_MEMORY_REGION "qemu:iommu-memory-region"
#define IOMMU_MEMORY_REGION(obj) \
OBJECT_CHECK(IOMMUMemoryRegion, (obj), TYPE_IOMMU_MEMORY_REGION)
typedef struct MemoryRegionOps MemoryRegionOps;
typedef struct MemoryRegionMmio MemoryRegionMmio;
@ -198,16 +202,16 @@ struct MemoryRegionIOMMUOps {
* set flag to IOMMU_NONE to mean that we don't need any
* read/write permission checks, like, when for region replay.
*/
IOMMUTLBEntry (*translate)(MemoryRegion *iommu, hwaddr addr,
IOMMUTLBEntry (*translate)(IOMMUMemoryRegion *iommu, hwaddr addr,
IOMMUAccessFlags flag);
/* Returns minimum supported page size */
uint64_t (*get_min_page_size)(MemoryRegion *iommu);
uint64_t (*get_min_page_size)(IOMMUMemoryRegion *iommu);
/* Called when IOMMU Notifier flag changed */
void (*notify_flag_changed)(MemoryRegion *iommu,
void (*notify_flag_changed)(IOMMUMemoryRegion *iommu,
IOMMUNotifierFlag old_flags,
IOMMUNotifierFlag new_flags);
/* Set this up to provide customized IOMMU replay function */
void (*replay)(MemoryRegion *iommu, IOMMUNotifier *notifier);
void (*replay)(IOMMUMemoryRegion *iommu, IOMMUNotifier *notifier);
};
typedef struct CoalescedMemoryRange CoalescedMemoryRange;
@ -227,9 +231,9 @@ struct MemoryRegion {
bool flush_coalesced_mmio;
bool global_locking;
uint8_t dirty_log_mask;
bool is_iommu;
RAMBlock *ram_block;
Object *owner;
const MemoryRegionIOMMUOps *iommu_ops;
const MemoryRegionOps *ops;
void *opaque;
@ -252,6 +256,12 @@ struct MemoryRegion {
const char *name;
unsigned ioeventfd_nb;
MemoryRegionIoeventfd *ioeventfds;
};
struct IOMMUMemoryRegion {
MemoryRegion parent_obj;
const MemoryRegionIOMMUOps *iommu_ops;
QLIST_HEAD(, IOMMUNotifier) iommu_notify;
IOMMUNotifierFlag iommu_notify_flags;
};
@ -618,13 +628,13 @@ static inline void memory_region_init_reservation(MemoryRegion *mr,
* An IOMMU region translates addresses and forwards accesses to a target
* memory region.
*
* @mr: the #MemoryRegion to be initialized
* @iommu_mr: the #IOMMUMemoryRegion to be initialized
* @owner: the object that tracks the region's reference count
* @ops: a function that translates addresses into the @target region
* @name: used for debugging; not visible to the user or ABI
* @size: size of the region.
*/
void memory_region_init_iommu(MemoryRegion *mr,
void memory_region_init_iommu(IOMMUMemoryRegion *iommu_mr,
struct Object *owner,
const MemoryRegionIOMMUOps *ops,
const char *name,
@ -679,20 +689,25 @@ static inline bool memory_region_is_romd(MemoryRegion *mr)
}
/**
* memory_region_is_iommu: check whether a memory region is an iommu
* memory_region_get_iommu: check whether a memory region is an iommu
*
* Returns %true is a memory region is an iommu.
* Returns pointer to IOMMUMemoryRegion if a memory region is an iommu,
* otherwise NULL.
*
* @mr: the memory region being queried
*/
static inline bool memory_region_is_iommu(MemoryRegion *mr)
static inline IOMMUMemoryRegion *memory_region_get_iommu(MemoryRegion *mr)
{
if (mr->alias) {
return memory_region_is_iommu(mr->alias);
return memory_region_get_iommu(mr->alias);
}
return mr->iommu_ops;
if (mr->is_iommu) {
return (IOMMUMemoryRegion *) mr;
}
return NULL;
}
#define memory_region_is_iommu(mr) (memory_region_get_iommu(mr) != NULL)
/**
* memory_region_iommu_get_min_page_size: get minimum supported page size
@ -700,9 +715,9 @@ static inline bool memory_region_is_iommu(MemoryRegion *mr)
*
* Returns minimum supported page size for an iommu.
*
* @mr: the memory region being queried
* @iommu_mr: the memory region being queried
*/
uint64_t memory_region_iommu_get_min_page_size(MemoryRegion *mr);
uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr);
/**
* memory_region_notify_iommu: notify a change in an IOMMU translation entry.
@ -716,12 +731,12 @@ uint64_t memory_region_iommu_get_min_page_size(MemoryRegion *mr);
* Note: for any IOMMU implementation, an in-place mapping change
* should be notified with an UNMAP followed by a MAP.
*
* @mr: the memory region that was changed
* @iommu_mr: the memory region that was changed
* @entry: the new entry in the IOMMU translation table. The entry
* replaces all old entries for the same virtual I/O address range.
* Deleted entries have .@perm == 0.
*/
void memory_region_notify_iommu(MemoryRegion *mr,
void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
IOMMUTLBEntry entry);
/**
@ -756,18 +771,18 @@ void memory_region_register_iommu_notifier(MemoryRegion *mr,
* a notifier with the minimum page granularity returned by
* mr->iommu_ops->get_page_size().
*
* @mr: the memory region to observe
* @iommu_mr: the memory region to observe
* @n: the notifier to which to replay iommu mappings
*/
void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n);
void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n);
/**
* memory_region_iommu_replay_all: replay existing IOMMU translations
* to all the notifiers registered.
*
* @mr: the memory region to observe
* @iommu_mr: the memory region to observe
*/
void memory_region_iommu_replay_all(MemoryRegion *mr);
void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr);
/**
* memory_region_unregister_iommu_notifier: unregister a notifier for

2
include/hw/i386/intel_iommu.h
View File

@ -83,7 +83,7 @@ struct VTDAddressSpace {
PCIBus *bus;
uint8_t devfn;
AddressSpace as;
MemoryRegion iommu;
IOMMUMemoryRegion iommu;
MemoryRegion root;
MemoryRegion sys_alias;
MemoryRegion iommu_ir; /* Interrupt region: 0xfeeXXXXX */

2
include/hw/mips/mips.h
View File

@ -19,6 +19,6 @@ typedef struct rc4030DMAState *rc4030_dma;
void rc4030_dma_read(void *dma, uint8_t *buf, int len);
void rc4030_dma_write(void *dma, uint8_t *buf, int len);
DeviceState *rc4030_init(rc4030_dma **dmas, MemoryRegion **dma_mr);
DeviceState *rc4030_init(rc4030_dma **dmas, IOMMUMemoryRegion **dma_mr);
#endif

3
include/hw/ppc/spapr.h
View File

@ -594,7 +594,8 @@ struct sPAPRTCETable {
bool bypass;
bool need_vfio;
int fd;
MemoryRegion root, iommu;
MemoryRegion root;
IOMMUMemoryRegion iommu;
struct VIOsPAPRDevice *vdev; /* for @bypass migration compatibility only */
QLIST_ENTRY(sPAPRTCETable) list;
};

2
include/hw/vfio/vfio-common.h
View File

@ -95,7 +95,7 @@ typedef struct VFIOContainer {
typedef struct VFIOGuestIOMMU {
VFIOContainer *container;
MemoryRegion *iommu;
IOMMUMemoryRegion *iommu;
hwaddr iommu_offset;
IOMMUNotifier n;
QLIST_ENTRY(VFIOGuestIOMMU) giommu_next;

1
include/qemu/typedefs.h
View File

@ -45,6 +45,7 @@ typedef struct MachineState MachineState;
typedef struct MemoryListener MemoryListener;
typedef struct MemoryMappingList MemoryMappingList;
typedef struct MemoryRegion MemoryRegion;
typedef struct IOMMUMemoryRegion IOMMUMemoryRegion;
typedef struct MemoryRegionCache MemoryRegionCache;
typedef struct MemoryRegionSection MemoryRegionSection;
typedef struct MigrationIncomingState MigrationIncomingState;

97
memory.c
View File

@ -977,12 +977,11 @@ static char *memory_region_escape_name(const char *name)
return escaped;
}
void memory_region_init(MemoryRegion *mr,
static void memory_region_do_init(MemoryRegion *mr,
Object *owner,
const char *name,
uint64_t size)
{
object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
mr->size = int128_make64(size);
if (size == UINT64_MAX) {
mr->size = int128_2_64();
@ -1006,6 +1005,15 @@ void memory_region_init(MemoryRegion *mr,
}
}
void memory_region_init(MemoryRegion *mr,
Object *owner,
const char *name,
uint64_t size)
{
object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
memory_region_do_init(mr, owner, name, size);
}
static void memory_region_get_addr(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
@ -1092,6 +1100,13 @@ static void memory_region_initfn(Object *obj)
NULL, NULL, &error_abort);
}
static void iommu_memory_region_initfn(Object *obj)
{
MemoryRegion *mr = MEMORY_REGION(obj);
mr->is_iommu = true;
}
static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
unsigned size)
{
@ -1491,17 +1506,22 @@ void memory_region_init_rom_device(MemoryRegion *mr,
mr->ram_block = qemu_ram_alloc(size, mr, errp);
}
void memory_region_init_iommu(MemoryRegion *mr,
void memory_region_init_iommu(IOMMUMemoryRegion *iommu_mr,
Object *owner,
const MemoryRegionIOMMUOps *ops,
const char *name,
uint64_t size)
{
memory_region_init(mr, owner, name, size);
mr->iommu_ops = ops,
struct MemoryRegion *mr;
object_initialize(iommu_mr, sizeof(*iommu_mr), TYPE_IOMMU_MEMORY_REGION);
mr = MEMORY_REGION(iommu_mr);
memory_region_do_init(mr, owner, name, size);
iommu_mr = IOMMU_MEMORY_REGION(mr);
iommu_mr->iommu_ops = ops,
mr->terminates = true; /* then re-forwards */
QLIST_INIT(&mr->iommu_notify);
mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE;
QLIST_INIT(&iommu_mr->iommu_notify);
iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE;
}
static void memory_region_finalize(Object *obj)
@ -1596,63 +1616,67 @@ bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
return memory_region_get_dirty_log_mask(mr) & (1 << client);
}
static void memory_region_update_iommu_notify_flags(MemoryRegion *mr)
static void memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr)
{
IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE;
IOMMUNotifier *iommu_notifier;
IOMMU_NOTIFIER_FOREACH(iommu_notifier, mr) {
IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
flags |= iommu_notifier->notifier_flags;
}
if (flags != mr->iommu_notify_flags &&
mr->iommu_ops->notify_flag_changed) {
mr->iommu_ops->notify_flag_changed(mr, mr->iommu_notify_flags,
if (flags != iommu_mr->iommu_notify_flags &&
iommu_mr->iommu_ops->notify_flag_changed) {
iommu_mr->iommu_ops->notify_flag_changed(iommu_mr,
iommu_mr->iommu_notify_flags,
flags);
}
mr->iommu_notify_flags = flags;
iommu_mr->iommu_notify_flags = flags;
}
void memory_region_register_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n)
{
IOMMUMemoryRegion *iommu_mr;
if (mr->alias) {
memory_region_register_iommu_notifier(mr->alias, n);
return;
}
/* We need to register for at least one bitfield */
iommu_mr = IOMMU_MEMORY_REGION(mr);
assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
assert(n->start <= n->end);
QLIST_INSERT_HEAD(&mr->iommu_notify, n, node);
memory_region_update_iommu_notify_flags(mr);
QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node);
memory_region_update_iommu_notify_flags(iommu_mr);
}
uint64_t memory_region_iommu_get_min_page_size(MemoryRegion *mr)
uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr)
{
assert(memory_region_is_iommu(mr));
if (mr->iommu_ops && mr->iommu_ops->get_min_page_size) {
return mr->iommu_ops->get_min_page_size(mr);
if (iommu_mr->iommu_ops && iommu_mr->iommu_ops->get_min_page_size) {
return iommu_mr->iommu_ops->get_min_page_size(iommu_mr);
}
return TARGET_PAGE_SIZE;
}
void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n)
void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
{
MemoryRegion *mr = MEMORY_REGION(iommu_mr);
hwaddr addr, granularity;
IOMMUTLBEntry iotlb;
/* If the IOMMU has its own replay callback, override */
if (mr->iommu_ops->replay) {
mr->iommu_ops->replay(mr, n);
if (iommu_mr->iommu_ops->replay) {
iommu_mr->iommu_ops->replay(iommu_mr, n);
return;
}
granularity = memory_region_iommu_get_min_page_size(mr);
granularity = memory_region_iommu_get_min_page_size(iommu_mr);
for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
iotlb = mr->iommu_ops->translate(mr, addr, IOMMU_NONE);
iotlb = iommu_mr->iommu_ops->translate(iommu_mr, addr, IOMMU_NONE);
if (iotlb.perm != IOMMU_NONE) {
n->notify(n, &iotlb);
}
@ -1665,24 +1689,27 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n)
}
}
void memory_region_iommu_replay_all(MemoryRegion *mr)
void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr)
{
IOMMUNotifier *notifier;
IOMMU_NOTIFIER_FOREACH(notifier, mr) {
memory_region_iommu_replay(mr, notifier);
IOMMU_NOTIFIER_FOREACH(notifier, iommu_mr) {
memory_region_iommu_replay(iommu_mr, notifier);
}
}
void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n)
{
IOMMUMemoryRegion *iommu_mr;
if (mr->alias) {
memory_region_unregister_iommu_notifier(mr->alias, n);
return;
}
QLIST_REMOVE(n, node);
memory_region_update_iommu_notify_flags(mr);
iommu_mr = IOMMU_MEMORY_REGION(mr);
memory_region_update_iommu_notify_flags(iommu_mr);
}
void memory_region_notify_one(IOMMUNotifier *notifier,
@ -1710,14 +1737,14 @@ void memory_region_notify_one(IOMMUNotifier *notifier,
}
}
void memory_region_notify_iommu(MemoryRegion *mr,
void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
IOMMUTLBEntry entry)
{
IOMMUNotifier *iommu_notifier;
assert(memory_region_is_iommu(mr));
assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr)));
IOMMU_NOTIFIER_FOREACH(iommu_notifier, mr) {
IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
memory_region_notify_one(iommu_notifier, &entry);
}
}
@ -2825,9 +2852,17 @@ static const TypeInfo memory_region_info = {
.instance_finalize = memory_region_finalize,
};
static const TypeInfo iommu_memory_region_info = {
.parent = TYPE_MEMORY_REGION,
.name = TYPE_IOMMU_MEMORY_REGION,
.instance_size = sizeof(IOMMUMemoryRegion),
.instance_init = iommu_memory_region_initfn,
};
static void memory_register_types(void)
{
type_register_static(&memory_region_info);
type_register_static(&iommu_memory_region_info);
}
type_init(memory_register_types)