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hv: ptdev: add source_id for ptdev to identify source

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Then use the source id to lookup the ptdev remapping entry.
For msi interrupt ptdev: use bdf and vector_index to identify the id;
For intx interrupt ptdev: use pin and pin source to identify the id.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Li, Fei1 2018-08-20 10:47:35 +08:00 committed by wenlingz
parent 6367650a70
commit e8c0763de6
6 changed files with 190 additions and 323 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

434
hypervisor/arch/x86/assign.c
View File

@ -6,46 +6,35 @@
#include <hypervisor.h>
static inline uint32_t
entry_id_from_msix(uint16_t bdf, uint32_t index)
/*
* lookup a ptdev entry by sid
* Before adding a ptdev remapping, should lookup by physical sid to check
* whether the resource has been token by others.
* When updating a ptdev remapping, should lookup by virtual sid to check
* whether this resource is valid.
* @pre: vm must be NULL when lookup by physical sid, otherwise,
* vm must not be NULL when lookup by virtual sid.
*/
static inline struct ptdev_remapping_info *
ptdev_lookup_entry_by_sid(uint32_t intr_type,
union source_id *sid, struct vm *vm)
{
uint32_t id = index & 0xffU;
struct ptdev_remapping_info *entry;
struct list_head *pos;
id = (uint32_t)bdf | (id << 16U) | ((uint32_t)PTDEV_INTR_MSI << 24U);
return id;
}
static inline uint32_t
entry_id_from_intx(uint8_t pin)
{
uint32_t id;
id = pin | ((uint32_t)PTDEV_INTR_INTX << 24U);
return id;
}
/* entry_id is used to identify a ptdev entry based on phys info */
static inline uint32_t
entry_id(struct ptdev_remapping_info *entry)
{
uint32_t id;
struct ptdev_msi_info *msi = &entry->ptdev_intr_info.msi;
struct ptdev_intx_info *intx = &entry->ptdev_intr_info.intx;
if (entry->type == PTDEV_INTR_INTX) {
id = entry_id_from_intx(intx->phys_pin);
} else {
id = entry_id_from_msix(entry->phys_bdf,
msi->msix_entry_index);
list_for_each(pos, &ptdev_list) {
entry = list_entry(pos, struct ptdev_remapping_info,
entry_node);
if ((intr_type == entry->intr_type) &&
((vm == NULL) ?
(sid->value == entry->phys_sid.value) :
((vm == entry->vm) &&
(sid->value == entry->virt_sid.value)))) {
return entry;
}
}
return id;
}
static inline bool
is_entry_invalid(struct ptdev_remapping_info *entry)
{
return entry->type == PTDEV_INTR_INV;
return NULL;
}
static inline bool
@ -54,95 +43,11 @@ is_entry_active(struct ptdev_remapping_info *entry)
return atomic_load32(&entry->active) == ACTIVE_FLAG;
}
/* require ptdev_lock protect */
static inline struct ptdev_remapping_info *
local_lookup_entry_by_id(uint32_t id)
{
struct ptdev_remapping_info *entry;
struct list_head *pos;
list_for_each(pos, &ptdev_list) {
entry = list_entry(pos, struct ptdev_remapping_info,
entry_node);
if (entry_id(entry) == id) {
return entry;
}
}
return NULL;
}
/* require ptdev_lock protect */
static inline struct ptdev_remapping_info *
local_lookup_entry_by_vmsi(struct vm *vm, uint16_t vbdf, uint32_t index)
{
struct ptdev_remapping_info *entry;
struct list_head *pos;
list_for_each(pos, &ptdev_list) {
entry = list_entry(pos, struct ptdev_remapping_info,
entry_node);
if ((entry->type == PTDEV_INTR_MSI)
&& (entry->vm == vm)
&& (entry->virt_bdf == vbdf)
&& (entry->ptdev_intr_info.msi.msix_entry_index
== index)) {
return entry;
}
}
return NULL;
}
static inline struct ptdev_remapping_info *
lookup_entry_by_vmsi(struct vm *vm, uint16_t vbdf, uint32_t index)
{
struct ptdev_remapping_info *entry;
spinlock_obtain(&ptdev_lock);
entry = local_lookup_entry_by_vmsi(vm, vbdf, index);
spinlock_release(&ptdev_lock);
return entry;
}
/* require ptdev_lock protect */
static inline struct ptdev_remapping_info *
local_lookup_entry_by_vintx(struct vm *vm, uint8_t vpin,
enum ptdev_vpin_source vpin_src)
{
struct ptdev_remapping_info *entry;
struct list_head *pos;
list_for_each(pos, &ptdev_list) {
entry = list_entry(pos, struct ptdev_remapping_info,
entry_node);
if ((entry->type == PTDEV_INTR_INTX)
&& (entry->vm == vm)
&& (entry->ptdev_intr_info.intx.virt_pin == vpin)
&& (entry->ptdev_intr_info.intx.vpin_src == vpin_src)) {
return entry;
}
}
return NULL;
}
static inline struct ptdev_remapping_info *
lookup_entry_by_vintx(struct vm *vm, uint8_t vpin,
enum ptdev_vpin_source vpin_src)
{
struct ptdev_remapping_info *entry;
spinlock_obtain(&ptdev_lock);
entry = local_lookup_entry_by_vintx(vm, vpin, vpin_src);
spinlock_release(&ptdev_lock);
return entry;
}
static bool ptdev_hv_owned_intx(struct vm *vm, struct ptdev_intx_info *info)
static bool ptdev_hv_owned_intx(struct vm *vm, union source_id *virt_sid)
{
/* vm0 pin 4 (uart) is owned by hypervisor under debug version */
if (is_vm0(vm) && (vm->vuart != NULL) && (info->virt_pin == 4U)) {
if (is_vm0(vm) && (vm->vuart != NULL) &&
(virt_sid->intx_id.pin == 4U)) {
return true;
} else {
return false;
@ -192,16 +97,15 @@ ptdev_build_physical_rte(struct vm *vm,
union ioapic_rte rte;
uint32_t phys_irq = entry->allocated_pirq;
uint32_t vector = irq_to_vector(phys_irq);
struct ptdev_intx_info *intx = &entry->ptdev_intr_info.intx;
union source_id *virt_sid = &entry->virt_sid;
if (intx->vpin_src == PTDEV_VPIN_IOAPIC) {
if (virt_sid->intx_id.src == PTDEV_VPIN_IOAPIC) {
uint64_t vdmask, pdmask, delmode;
uint32_t dest;
union ioapic_rte virt_rte;
bool phys;
vioapic_get_rte(vm, intx->virt_pin,
&virt_rte);
vioapic_get_rte(vm, virt_sid->intx_id.pin, &virt_rte);
rte = virt_rte;
/* physical destination cpu mask */
@ -236,8 +140,7 @@ ptdev_build_physical_rte(struct vm *vm,
/* just update trigger mode */
ioapic_get_rte(phys_irq, &phys_rte);
rte.full = phys_rte.full & (~IOAPIC_RTE_TRGRMOD);
vpic_get_irq_trigger(vm,
intx->virt_pin, &trigger);
vpic_get_irq_trigger(vm, virt_sid->intx_id.pin, &trigger);
if (trigger == LEVEL_TRIGGER) {
rte.full |= IOAPIC_RTE_TRGRLVL;
}
@ -253,47 +156,48 @@ ptdev_build_physical_rte(struct vm *vm,
/* add msix entry for a vm, based on msi id (phys_bdf+msix_index)
* - if the entry not be added by any vm, allocate it
* - if the entry already be added by vm0, then change the owner to current vm
* - if the entry already be added by other vm, return invalid_entry
* - if the entry already be added by other vm, return NULL
*/
static struct ptdev_remapping_info *
add_msix_remapping(struct vm *vm, uint16_t virt_bdf, uint16_t phys_bdf,
uint32_t msix_entry_index)
{
struct ptdev_remapping_info *entry;
DEFINE_MSI_SID(phys_sid, phys_bdf, msix_entry_index);
DEFINE_MSI_SID(virt_sid, virt_bdf, msix_entry_index);
spinlock_obtain(&ptdev_lock);
entry = local_lookup_entry_by_id(
entry_id_from_msix(phys_bdf, msix_entry_index));
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_MSI, &phys_sid, NULL);
if (entry == NULL) {
if (local_lookup_entry_by_vmsi(vm, virt_bdf, msix_entry_index) != NULL) {
if (ptdev_lookup_entry_by_sid(PTDEV_INTR_MSI,
&virt_sid, vm) != NULL) {
pr_err("MSIX re-add vbdf%x", virt_bdf);
spinlock_release(&ptdev_lock);
return &invalid_entry;
return NULL;
}
entry = alloc_entry(vm, PTDEV_INTR_MSI);
entry->virt_bdf = virt_bdf;
entry->phys_bdf = phys_bdf;
entry->ptdev_intr_info.msi.msix_entry_index = msix_entry_index;
entry->phys_sid.value = phys_sid.value;
entry->virt_sid.value = virt_sid.value;
/* update msi source and active entry */
ptdev_activate_entry(entry, IRQ_INVALID);
} else if (entry->vm != vm) {
if (is_vm0(entry->vm)) {
entry->vm = vm;
entry->virt_bdf = virt_bdf;
entry->virt_sid.msi_id.bdf = virt_bdf;
} else {
pr_err("MSIX pbdf%x idx=%d already in vm%d with vbdf%x,"
" not able to add into vm%d with vbdf%x",
entry->phys_bdf,
entry->ptdev_intr_info.msi.msix_entry_index,
entry->vm->vm_id,
entry->virt_bdf, vm->vm_id, virt_bdf);
entry->phys_sid.msi_id.bdf,
entry->phys_sid.msi_id.entry_nr,
entry->vm->vm_id, entry->virt_sid.msi_id.bdf,
vm->vm_id, virt_bdf);
ASSERT(false, "msix entry pbdf%x idx%d already in vm%d",
phys_bdf, msix_entry_index, entry->vm->vm_id);
spinlock_release(&ptdev_lock);
return &invalid_entry;
return NULL;
}
} else {
/* The mapping has already been added to the VM. No action
@ -313,9 +217,10 @@ static void
remove_msix_remapping(struct vm *vm, uint16_t virt_bdf, uint32_t msix_entry_index)
{
struct ptdev_remapping_info *entry;
DEFINE_MSI_SID(virt_sid, virt_bdf, msix_entry_index);
spinlock_obtain(&ptdev_lock);
entry = local_lookup_entry_by_vmsi(vm, virt_bdf, msix_entry_index);
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_MSI, &virt_sid, vm);
if (entry == NULL) {
goto END;
}
@ -327,8 +232,8 @@ remove_msix_remapping(struct vm *vm, uint16_t virt_bdf, uint32_t msix_entry_inde
dev_dbg(ACRN_DBG_IRQ,
"VM%d MSIX remove vector mapping vbdf-pbdf:0x%x-0x%x idx=%d",
entry->vm->vm_id,
entry->virt_bdf, entry->phys_bdf, msix_entry_index);
entry->vm->vm_id, virt_bdf,
entry->phys_sid.msi_id.bdf, msix_entry_index);
release_entry(entry);
@ -340,7 +245,7 @@ END:
/* add intx entry for a vm, based on intx id (phys_pin)
* - if the entry not be added by any vm, allocate it
* - if the entry already be added by vm0, then change the owner to current vm
* - if the entry already be added by other vm, return invalid_entry
* - if the entry already be added by other vm, return NULL
*/
static struct ptdev_remapping_info *
add_intx_remapping(struct vm *vm, uint8_t virt_pin,
@ -349,39 +254,37 @@ add_intx_remapping(struct vm *vm, uint8_t virt_pin,
struct ptdev_remapping_info *entry;
enum ptdev_vpin_source vpin_src =
pic_pin ? PTDEV_VPIN_PIC : PTDEV_VPIN_IOAPIC;
DEFINE_IOAPIC_SID(phys_sid, phys_pin, 0);
DEFINE_IOAPIC_SID(virt_sid, virt_pin, vpin_src);
spinlock_obtain(&ptdev_lock);
entry = local_lookup_entry_by_id(entry_id_from_intx(phys_pin));
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_INTX, &phys_sid, NULL);
if (entry == NULL) {
if (local_lookup_entry_by_vintx(vm, virt_pin, vpin_src) != NULL) {
if (ptdev_lookup_entry_by_sid(PTDEV_INTR_INTX,
&virt_sid, vm) != NULL) {
pr_err("INTX re-add vpin %d", virt_pin);
spinlock_release(&ptdev_lock);
return &invalid_entry;
return NULL;
}
entry = alloc_entry(vm, PTDEV_INTR_INTX);
entry->ptdev_intr_info.intx.phys_pin = phys_pin;
entry->ptdev_intr_info.intx.virt_pin = virt_pin;
entry->ptdev_intr_info.intx.vpin_src = vpin_src;
entry->phys_sid.value = phys_sid.value;
entry->virt_sid.value = virt_sid.value;
/* activate entry */
ptdev_activate_entry(entry, pin_to_irq(phys_pin));
} else if (entry->vm != vm) {
if (is_vm0(entry->vm)) {
entry->vm = vm;
entry->ptdev_intr_info.intx.virt_pin = virt_pin;
entry->ptdev_intr_info.intx.vpin_src = vpin_src;
entry->virt_sid.value = virt_sid.value;
} else {
pr_err("INTX pin%d already in vm%d with vpin%d,"
" not able to add into vm%d with vpin%d",
entry->ptdev_intr_info.intx.phys_pin,
entry->vm->vm_id,
entry->ptdev_intr_info.intx.virt_pin,
vm->vm_id, virt_pin);
ASSERT(false, "intx entry pin%d already vm%d",
phys_pin, entry->vm->vm_id);
" not able to add into vm%d with vpin%d",
phys_pin, entry->vm->vm_id,
entry->virt_sid.intx_id.pin,
vm->vm_id, virt_pin);
spinlock_release(&ptdev_lock);
return &invalid_entry;
return NULL;
}
} else {
/* The mapping has already been added to the VM. No action
@ -404,9 +307,10 @@ static void remove_intx_remapping(struct vm *vm, uint8_t virt_pin, bool pic_pin)
struct ptdev_remapping_info *entry;
enum ptdev_vpin_source vpin_src =
pic_pin ? PTDEV_VPIN_PIC : PTDEV_VPIN_IOAPIC;
DEFINE_IOAPIC_SID(virt_sid, virt_pin, vpin_src);
spinlock_obtain(&ptdev_lock);
entry = local_lookup_entry_by_vintx(vm, virt_pin, vpin_src);
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_INTX, &virt_sid, vm);
if (entry == NULL) {
goto END;
}
@ -423,12 +327,11 @@ static void remove_intx_remapping(struct vm *vm, uint8_t virt_pin, bool pic_pin)
ptdev_deactivate_entry(entry);
dev_dbg(ACRN_DBG_IRQ,
"deactive %s intx entry:ppin=%d, pirq=%d ",
entry->ptdev_intr_info.intx.vpin_src == PTDEV_VPIN_PIC ?
vpin_src == PTDEV_VPIN_PIC ?
"vPIC" : "vIOAPIC",
entry->ptdev_intr_info.intx.phys_pin, phys_irq);
entry->phys_sid.intx_id.pin, phys_irq);
dev_dbg(ACRN_DBG_IRQ, "from vm%d vpin=%d\n",
entry->vm->vm_id,
entry->ptdev_intr_info.intx.virt_pin);
entry->vm->vm_id, virt_pin);
}
release_entry(entry);
@ -440,26 +343,23 @@ END:
static void ptdev_intr_handle_irq(struct vm *vm,
struct ptdev_remapping_info *entry)
{
struct ptdev_intx_info * intx = &entry->ptdev_intr_info.intx;
switch (intx->vpin_src) {
union source_id *virt_sid = &entry->virt_sid;
switch (virt_sid->intx_id.src) {
case PTDEV_VPIN_IOAPIC:
{
union ioapic_rte rte;
bool trigger_lvl = false;
/* VPIN_IOAPIC src means we have vioapic enabled */
vioapic_get_rte(vm, intx->virt_pin,
&rte);
vioapic_get_rte(vm, virt_sid->intx_id.pin, &rte);
if ((rte.full & IOAPIC_RTE_TRGRMOD) == IOAPIC_RTE_TRGRLVL) {
trigger_lvl = true;
}
if (trigger_lvl) {
vioapic_assert_irq(vm,
intx->virt_pin);
vioapic_assert_irq(vm, virt_sid->intx_id.pin);
} else {
vioapic_pulse_irq(vm,
intx->virt_pin);
vioapic_pulse_irq(vm, virt_sid->intx_id.pin);
}
dev_dbg(ACRN_DBG_PTIRQ,
@ -474,21 +374,18 @@ static void ptdev_intr_handle_irq(struct vm *vm,
enum vpic_trigger trigger;
/* VPIN_PIC src means we have vpic enabled */
vpic_get_irq_trigger(vm,
intx->virt_pin, &trigger);
vpic_get_irq_trigger(vm, virt_sid->intx_id.pin, &trigger);
if (trigger == LEVEL_TRIGGER) {
vpic_assert_irq(vm,
intx->virt_pin);
vpic_assert_irq(vm, virt_sid->intx_id.pin);
} else {
vpic_pulse_irq(vm,
intx->virt_pin);
vpic_pulse_irq(vm, virt_sid->intx_id.pin);
}
break;
}
default:
/*
* In this switch statement, intx->vpin_src shall either be
* PTDEV_VPIN_IOAPIC or PTDEV_VPIN_PIC.
* In this switch statement, virt_sid->intx_id.src shall
* either be PTDEV_VPIN_IOAPIC or PTDEV_VPIN_PIC.
* Gracefully return if prior case clauses have not been met.
*/
break;
@ -499,7 +396,7 @@ void ptdev_softirq(__unused uint16_t cpu_id)
{
while (1) {
struct ptdev_remapping_info *entry = ptdev_dequeue_softirq();
struct ptdev_msi_info *msi = &entry->ptdev_intr_info.msi;
struct ptdev_msi_info *msi = &entry->msi;
struct vm *vm;
if (entry == NULL) {
@ -516,7 +413,7 @@ void ptdev_softirq(__unused uint16_t cpu_id)
vm = entry->vm;
/* handle real request */
if (entry->type == PTDEV_INTR_INTX) {
if (entry->intr_type == PTDEV_INTR_INTX) {
ptdev_intr_handle_irq(vm, entry);
} else {
/* TODO: msi destmode check required */
@ -542,13 +439,16 @@ void ptdev_intx_ack(struct vm *vm, uint8_t virt_pin,
uint32_t phys_irq;
struct ptdev_remapping_info *entry;
uint8_t phys_pin;
DEFINE_IOAPIC_SID(virt_sid, virt_pin, vpin_src);
entry = lookup_entry_by_vintx(vm, virt_pin, vpin_src);
spinlock_obtain(&ptdev_lock);
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_INTX, &virt_sid, vm);
spinlock_release(&ptdev_lock);
if (entry == NULL) {
return;
}
phys_pin = entry->ptdev_intr_info.intx.phys_pin;
phys_pin = entry->phys_sid.intx_id.pin;
phys_irq = pin_to_irq(phys_pin);
if (!irq_is_gsi(phys_irq)) {
return;
@ -557,7 +457,7 @@ void ptdev_intx_ack(struct vm *vm, uint8_t virt_pin,
/* NOTE: only Level trigger will process EOI/ACK and if we got here
* means we have this vioapic or vpic or both enabled
*/
switch (entry->ptdev_intr_info.intx.vpin_src) {
switch (vpin_src) {
case PTDEV_VPIN_IOAPIC:
vioapic_deassert_irq(vm, virt_pin);
break;
@ -565,8 +465,7 @@ void ptdev_intx_ack(struct vm *vm, uint8_t virt_pin,
vpic_deassert_irq(vm, virt_pin);
default:
/*
* In this switch statement,
* entry->ptdev_intr_info.intx.vpin_src shall either be
* In this switch statement, vpin_src shall either be
* PTDEV_VPIN_IOAPIC or PTDEV_VPIN_PIC.
* Gracefully return if prior case clauses have not been met.
*/
@ -590,6 +489,7 @@ int ptdev_msix_remap(struct vm *vm, uint16_t virt_bdf,
struct ptdev_msi_info *info)
{
struct ptdev_remapping_info *entry;
DEFINE_MSI_SID(virt_sid, virt_bdf, info->msix_entry_index);
/*
* Device Model should pre-hold the mapping entries by calling
@ -598,14 +498,15 @@ int ptdev_msix_remap(struct vm *vm, uint16_t virt_bdf,
* For SOS(vm0), it adds the mapping entries at runtime, if the
* entry already be held by others, return error.
*/
entry = lookup_entry_by_vmsi(vm, virt_bdf, info->msix_entry_index);
spinlock_obtain(&ptdev_lock);
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_MSI, &virt_sid, vm);
spinlock_release(&ptdev_lock);
if (entry == NULL) {
/* VM0 we add mapping dynamically */
if (is_vm0(vm)) {
entry = add_msix_remapping(vm, virt_bdf, virt_bdf,
info->msix_entry_index);
if (is_entry_invalid(entry)) {
if (entry == NULL) {
pr_err("dev-assign: msi entry exist in others");
return -ENODEV;
}
@ -627,37 +528,23 @@ int ptdev_msix_remap(struct vm *vm, uint16_t virt_bdf,
/* build physical config MSI, update to info->pmsi_xxx */
ptdev_build_physical_msi(vm, info, irq_to_vector(entry->allocated_pirq));
entry->ptdev_intr_info.msi = *info;
entry->ptdev_intr_info.msi.virt_vector = info->vmsi_data & 0xFFU;
entry->ptdev_intr_info.msi.phys_vector =
irq_to_vector(entry->allocated_pirq);
entry->msi = *info;
entry->msi.virt_vector = info->vmsi_data & 0xFFU;
entry->msi.phys_vector = irq_to_vector(entry->allocated_pirq);
dev_dbg(ACRN_DBG_IRQ,
"PCI %x:%x.%x MSI VR[%d] 0x%x->0x%x assigned to vm%d",
(entry->virt_bdf >> 8) & 0xFFU,
(entry->virt_bdf >> 3) & 0x1FU,
(entry->virt_bdf) & 0x7U,
entry->ptdev_intr_info.msi.msix_entry_index,
entry->ptdev_intr_info.msi.virt_vector,
entry->ptdev_intr_info.msi.phys_vector,
(virt_bdf >> 8) & 0xFFU,
(virt_bdf >> 3) & 0x1FU,
(virt_bdf) & 0x7U,
info->msix_entry_index,
entry->msi.virt_vector,
entry->msi.phys_vector,
entry->vm->vm_id);
END:
return 0;
}
static bool vpin_masked(struct vm *vm, uint8_t virt_pin,
enum ptdev_vpin_source vpin_src)
{
if (vpin_src == PTDEV_VPIN_IOAPIC) {
union ioapic_rte rte;
vioapic_get_rte(vm, virt_pin, &rte);
return ((rte.full & IOAPIC_RTE_INTMASK) == IOAPIC_RTE_INTMSET);
} else {
return vpic_is_pin_mask(vm->vpic, virt_pin);
}
}
static void activate_physical_ioapic(struct vm *vm,
struct ptdev_remapping_info *entry)
{
@ -691,13 +578,14 @@ static void activate_physical_ioapic(struct vm *vm,
/* Main entry for PCI/Legacy device assignment with INTx, calling from vIOAPIC
* or vPIC
*/
int ptdev_intx_pin_remap(struct vm *vm, struct ptdev_intx_info *info)
int ptdev_intx_pin_remap(struct vm *vm, uint8_t virt_pin,
enum ptdev_vpin_source vpin_src)
{
struct ptdev_remapping_info *entry;
uint32_t phys_irq;
uint8_t phys_pin;
bool need_switch_vpin_src = false;
struct ptdev_intx_info *intx;
DEFINE_IOAPIC_SID(virt_sid, virt_pin, vpin_src);
/*
* virt pin could come from vpic master, vpic slave or vioapic
@ -711,15 +599,17 @@ int ptdev_intx_pin_remap(struct vm *vm, struct ptdev_intx_info *info)
*/
/* no remap for hypervisor owned intx */
if (ptdev_hv_owned_intx(vm, info)) {
if (ptdev_hv_owned_intx(vm, &virt_sid)) {
goto END;
}
/* query if we have virt to phys mapping */
entry = lookup_entry_by_vintx(vm, info->virt_pin, info->vpin_src);
spinlock_obtain(&ptdev_lock);
entry = ptdev_lookup_entry_by_sid(PTDEV_INTR_INTX, &virt_sid, vm);
spinlock_release(&ptdev_lock);
if (entry == NULL) {
if (is_vm0(vm)) {
bool pic_pin = (info->vpin_src == PTDEV_VPIN_PIC);
bool pic_pin = (vpin_src == PTDEV_VPIN_PIC);
/* for vm0, there is chance of vpin source switch
* between vPIC & vIOAPIC for one legacy phys_pin.
@ -728,11 +618,15 @@ int ptdev_intx_pin_remap(struct vm *vm, struct ptdev_intx_info *info)
* the other vpin source for legacy pin. If yes, then
* switch vpin source is needed
*/
if (info->virt_pin < NR_LEGACY_PIN) {
entry = lookup_entry_by_vintx(vm,
pic_ioapic_pin_map[info->virt_pin],
pic_pin ? PTDEV_VPIN_IOAPIC
: PTDEV_VPIN_PIC);
if (virt_pin < NR_LEGACY_PIN) {
DEFINE_IOAPIC_SID(tmp_vsid,
pic_ioapic_pin_map[virt_pin],
pic_pin ? PTDEV_VPIN_IOAPIC :
PTDEV_VPIN_PIC);
spinlock_obtain(&ptdev_lock);
entry = ptdev_lookup_entry_by_sid(
PTDEV_INTR_INTX, &tmp_vsid, vm);
spinlock_release(&ptdev_lock);
if (entry != NULL) {
need_switch_vpin_src = true;
}
@ -740,24 +634,17 @@ int ptdev_intx_pin_remap(struct vm *vm, struct ptdev_intx_info *info)
/* entry could be updated by above switch check */
if (entry == NULL) {
/* allocate entry during first unmask */
if (vpin_masked(vm, info->virt_pin,
info->vpin_src)) {
goto END;
}
uint8_t phys_pin = virt_pin;
info->phys_pin = info->virt_pin;
/* fix vPIC pin to correct native IOAPIC pin */
if (pic_pin) {
info->phys_pin =
pic_ioapic_pin_map[info->virt_pin];
phys_pin = pic_ioapic_pin_map[virt_pin];
}
entry = add_intx_remapping(vm, info->virt_pin,
info->phys_pin, pic_pin);
if (is_entry_invalid(entry)) {
pr_err("dev-assign: intx entry exist "
"in others");
entry = add_intx_remapping(vm,
virt_pin, phys_pin, pic_pin);
if (entry == NULL) {
pr_err("%s, add intx remapping failed",
__func__);
return -ENODEV;
}
}
@ -769,40 +656,32 @@ int ptdev_intx_pin_remap(struct vm *vm, struct ptdev_intx_info *info)
goto END;
}
}
intx = &entry->ptdev_intr_info.intx;
/* no need update if vpin is masked && entry is not active */
if (!is_entry_active(entry) &&
vpin_masked(vm, info->virt_pin, info->vpin_src)) {
goto END;
}
/* phys_pin from physical IOAPIC */
phys_pin = entry->ptdev_intr_info.intx.phys_pin;
/* phys_pin from physical IOAPIC ? */
phys_pin = entry->phys_sid.intx_id.pin;
phys_irq = pin_to_irq(phys_pin);
if (!irq_is_gsi(phys_irq)) {
goto END;
}
/* if vpin source need switch, make sure the entry is deactived */
/* if vpin source need switch */
if (need_switch_vpin_src) {
if (is_entry_active(entry)) {
GSI_MASK_IRQ(phys_irq);
}
dev_dbg(ACRN_DBG_IRQ,
"IOAPIC pin=%hhu pirq=%u vpin=%d switch from %s to %s "
"vpin=%d for vm%d", phys_pin, phys_irq,
entry->ptdev_intr_info.intx.virt_pin,
(entry->ptdev_intr_info.intx.vpin_src != 0)?
"vPIC" : "vIOAPIC",
(entry->ptdev_intr_info.intx.vpin_src != 0)?
"vIOPIC" : "vPIC",
info->virt_pin,
entry->vm->vm_id);
intx->vpin_src = info->vpin_src;
intx->virt_pin = info->virt_pin;
entry->virt_sid.intx_id.pin,
(vpin_src == 0)? "vPIC" : "vIOAPIC",
(vpin_src == 0)? "vIOPIC" : "vPIC",
virt_pin, entry->vm->vm_id);
entry->virt_sid.value = virt_sid.value;
}
activate_physical_ioapic(vm, entry);
dev_dbg(ACRN_DBG_IRQ,
"IOAPIC pin=%hhu pirq=%u assigned to vm%d %s vpin=%d",
phys_pin, phys_irq, entry->vm->vm_id,
vpin_src == PTDEV_VPIN_PIC ? "vPIC" : "vIOAPIC",
virt_pin);
END:
return 0;
}
@ -827,11 +706,8 @@ int ptdev_add_intx_remapping(struct vm *vm,
}
entry = add_intx_remapping(vm, virt_pin, phys_pin, pic_pin);
if (is_entry_invalid(entry)) {
return -ENODEV;
}
return 0;
return (entry != NULL) ? 0 : -ENODEV;
}
void ptdev_remove_intx_remapping(struct vm *vm, uint8_t virt_pin, bool pic_pin)
@ -857,7 +733,7 @@ int ptdev_add_msix_remapping(struct vm *vm, uint16_t virt_bdf,
for (i = 0U; i < vector_count; i++) {
entry = add_msix_remapping(vm, virt_bdf, phys_bdf, i);
if (is_entry_invalid(entry)) {
if (entry == NULL) {
return -ENODEV;
}
}
@ -886,29 +762,25 @@ static void get_entry_info(struct ptdev_remapping_info *entry, char *type,
uint32_t *irq, uint32_t *vector, uint64_t *dest, bool *lvl_tm,
uint8_t *pin, uint8_t *vpin, uint32_t *bdf, uint32_t *vbdf)
{
struct ptdev_intx_info *intx = &entry->ptdev_intr_info.intx;
if (is_entry_active(entry)) {
if (entry->type == PTDEV_INTR_MSI) {
if (entry->intr_type == PTDEV_INTR_MSI) {
(void)strcpy_s(type, 16U, "MSI");
*dest = (entry->ptdev_intr_info.msi.pmsi_addr & 0xFF000U)
>> 12;
if ((entry->ptdev_intr_info.msi.pmsi_data &
APIC_TRIGMOD_LEVEL) != 0U) {
*dest = (entry->msi.pmsi_addr & 0xFF000U) >> 12;
if ((entry->msi.pmsi_data & APIC_TRIGMOD_LEVEL) != 0U) {
*lvl_tm = true;
} else {
*lvl_tm = false;
}
*pin = PTDEV_INVALID_PIN;
*vpin = PTDEV_INVALID_PIN;
*bdf = entry->phys_bdf;
*vbdf = entry->virt_bdf;
*bdf = entry->phys_sid.msi_id.bdf;
*vbdf = entry->virt_sid.msi_id.bdf;
} else {
uint32_t phys_irq = pin_to_irq(
intx->phys_pin);
entry->phys_sid.intx_id.pin);
union ioapic_rte rte;
if (intx->vpin_src
== PTDEV_VPIN_IOAPIC) {
if (entry->virt_sid.intx_id.src == PTDEV_VPIN_IOAPIC) {
(void)strcpy_s(type, 16U, "IOAPIC");
} else {
(void)strcpy_s(type, 16U, "PIC");
@ -920,8 +792,8 @@ static void get_entry_info(struct ptdev_remapping_info *entry, char *type,
} else {
*lvl_tm = false;
}
*pin = intx->phys_pin;
*vpin = intx->virt_pin;
*pin = entry->phys_sid.intx_id.pin;
*vpin = entry->virt_sid.intx_id.pin;
*bdf = 0U;
*vbdf = 0U;
}

9
hypervisor/common/ptdev.c
View File

@ -14,11 +14,6 @@ static struct list_head softirq_dev_entry_list;
struct list_head ptdev_list;
spinlock_t ptdev_lock;
/* invalid_entry for error return */
struct ptdev_remapping_info invalid_entry = {
.type = PTDEV_INTR_INV,
};
/*
* entry could both be in ptdev_list and softirq_dev_entry_list.
* When release entry, we need make sure entry deleted from both
@ -64,14 +59,14 @@ ptdev_dequeue_softirq(void)
/* require ptdev_lock protect */
struct ptdev_remapping_info *
alloc_entry(struct vm *vm, enum ptdev_intr_type type)
alloc_entry(struct vm *vm, uint32_t intr_type)
{
struct ptdev_remapping_info *entry;
/* allocate */
entry = calloc(1U, sizeof(*entry));
ASSERT(entry != NULL, "alloc memory failed");
entry->type = type;
entry->intr_type = intr_type;
entry->vm = vm;
INIT_LIST_HEAD(&entry->softirq_node);

7
hypervisor/dm/vioapic.c
View File

@ -397,12 +397,9 @@ vioapic_indirect_write(struct vioapic *vioapic, uint32_t addr, uint32_t data)
if (((new.full & IOAPIC_RTE_INTMASK) == 0UL) ||
((last.full & IOAPIC_RTE_INTMASK) == 0UL)) {
/* VM enable intr */
struct ptdev_intx_info intx;
/* NOTE: only support max 256 pin */
intx.virt_pin = (uint8_t)pin;
intx.vpin_src = PTDEV_VPIN_IOAPIC;
ptdev_intx_pin_remap(vioapic->vm, &intx);
ptdev_intx_pin_remap(vioapic->vm,
(uint8_t)pin, PTDEV_VPIN_IOAPIC);
}
}
}

12
hypervisor/dm/vpic.c
View File

@ -374,7 +374,7 @@ static int vpic_ocw1(struct acrn_vpic *vpic, struct i8259_reg_state *i8259, uint
* remap for deactive: when vIOAPIC take it over
*/
if (((i8259->mask & bit) == 0U) && ((old & bit) != 0U)) {
struct ptdev_intx_info intx;
uint8_t virt_pin;
/* master i8259 pin2 connect with slave i8259,
* not device, so not need pt remap
@ -383,12 +383,10 @@ static int vpic_ocw1(struct acrn_vpic *vpic, struct i8259_reg_state *i8259, uint
continue;
}
intx.virt_pin = pin;
intx.vpin_src = PTDEV_VPIN_PIC;
if (!master_pic(vpic, i8259)) {
intx.virt_pin += 8U;
}
ptdev_intx_pin_remap(vpic->vm, &intx);
virt_pin = (master_pic(vpic, i8259)) ?
pin : (pin + 8U);
ptdev_intx_pin_remap(vpic->vm,
virt_pin, PTDEV_VPIN_PIC);
}
}

3
hypervisor/include/arch/x86/assign.h
View File

@ -13,7 +13,8 @@ void ptdev_intx_ack(struct vm *vm, uint8_t virt_pin,
enum ptdev_vpin_source vpin_src);
int ptdev_msix_remap(struct vm *vm, uint16_t virt_bdf,
struct ptdev_msi_info *info);
int ptdev_intx_pin_remap(struct vm *vm, struct ptdev_intx_info *info);
int ptdev_intx_pin_remap(struct vm *vm, uint8_t virt_pin,
enum ptdev_vpin_source vpin_src);
int ptdev_add_intx_remapping(struct vm *vm, __unused uint16_t virt_bdf,
__unused uint16_t phys_bdf, uint8_t virt_pin, uint8_t phys_pin,
bool pic_pin);

48
hypervisor/include/common/ptdev.h
View File

@ -9,17 +9,33 @@
#define ACTIVE_FLAG 0x1U /* any non zero should be okay */
enum ptdev_intr_type {
PTDEV_INTR_MSI,
PTDEV_INTR_INTX,
PTDEV_INTR_INV,
};
#define PTDEV_INTR_MSI (1U << 0U)
#define PTDEV_INTR_INTX (1U << 1U)
enum ptdev_vpin_source {
PTDEV_VPIN_IOAPIC,
PTDEV_VPIN_PIC,
};
#define DEFINE_MSI_SID(name, a, b) \
union source_id name = {.msi_id = {.bdf = (a), .entry_nr = (b)}}
#define DEFINE_IOAPIC_SID(name, a, b) \
union source_id name = {.intx_id = {.pin = (a), .src = (b)}}
union source_id {
uint32_t value;
struct {
uint16_t bdf;
uint16_t entry_nr;
} msi_id;
struct {
uint8_t pin;
uint8_t src;
uint16_t reserved;
} intx_id;
};
/* entry per guest virt vector */
struct ptdev_msi_info {
uint32_t vmsi_addr; /* virt msi_addr */
@ -33,37 +49,25 @@ struct ptdev_msi_info {
uint32_t phys_vector;
};
/* entry per guest vioapic pin */
struct ptdev_intx_info {
enum ptdev_vpin_source vpin_src;
uint8_t virt_pin;
uint8_t phys_pin;
};
/* entry per each allocated irq/vector
* it represents a pass-thru device's remapping data entry which collecting
* information related with its vm and msi/intx mapping & interaction nodes
* with interrupt handler and softirq.
*/
struct ptdev_remapping_info {
uint32_t intr_type;
union source_id phys_sid;
union source_id virt_sid;
struct vm *vm;
uint16_t virt_bdf; /* PCI bus:slot.func*/
uint16_t phys_bdf; /* PCI bus:slot.func*/
uint32_t active; /* 1=active, 0=inactive and to free*/
enum ptdev_intr_type type;
uint32_t allocated_pirq;
struct list_head softirq_node;
struct list_head entry_node;
union {
struct ptdev_msi_info msi;
struct ptdev_intx_info intx;
} ptdev_intr_info;
struct ptdev_msi_info msi;
};
extern struct list_head ptdev_list;
extern spinlock_t ptdev_lock;
extern struct ptdev_remapping_info invalid_entry;
void ptdev_softirq(__unused uint16_t cpu_id);
void ptdev_init(void);
@ -71,7 +75,7 @@ void ptdev_release_all_entries(struct vm *vm);
struct ptdev_remapping_info *ptdev_dequeue_softirq(void);
struct ptdev_remapping_info *alloc_entry(struct vm *vm,
enum ptdev_intr_type type);
uint32_t intr_type);
void release_entry(struct ptdev_remapping_info *entry);
void ptdev_activate_entry(
struct ptdev_remapping_info *entry,