void benchmark_track_utilisation_dump(void)
{
uint64_t *buffer = ((uint64_t *) & (((seL4_IPCBuffer *)lookupIPCBuffer(true, NODE_STATE(ksCurThread)))->msg[0]));
tcb_t *tcb = NULL;
word_t tcb_cptr = getRegister(NODE_STATE(ksCurThread), capRegister);
lookupCap_ret_t lu_ret;
word_t cap_type;
lu_ret = lookupCap(NODE_STATE(ksCurThread), tcb_cptr);
/* ensure we got a TCB cap */
cap_type = cap_get_capType(lu_ret.cap);
if (cap_type != cap_thread_cap) {
userError("SysBenchmarkFinalizeLog: cap is not a TCB, halting");
return;
}
tcb = TCB_PTR(cap_thread_cap_get_capTCBPtr(lu_ret.cap));
buffer[BENCHMARK_TCB_UTILISATION] = tcb->benchmark.utilisation; /* Requested thread utilisation */
buffer[BENCHMARK_IDLE_LOCALCPU_UTILISATION] = NODE_STATE(
ksIdleThread)->benchmark.utilisation; /* Idle thread utilisation of current CPU */
#ifdef ENABLE_SMP_SUPPORT
buffer[BENCHMARK_IDLE_TCBCPU_UTILISATION] = NODE_STATE_ON_CORE(ksIdleThread,
tcb->tcbAffinity)->benchmark.utilisation; /* Idle thread utilisation of CPU the TCB is running on */
#else
buffer[BENCHMARK_IDLE_TCBCPU_UTILISATION] = buffer[BENCHMARK_IDLE_LOCALCPU_UTILISATION];
#endif
#ifdef CONFIG_ARM_ENABLE_PMU_OVERFLOW_INTERRUPT
buffer[BENCHMARK_TOTAL_UTILISATION] =
(ccnt_num_overflows * 0xFFFFFFFFU) + benchmark_end_time - benchmark_start_time;
#else
buffer[BENCHMARK_TOTAL_UTILISATION] = benchmark_end_time - benchmark_start_time; /* Overall time */
#endif /* CONFIG_ARM_ENABLE_PMU_OVERFLOW_INTERRUPT */
}
exception_t
handleUserLevelDebugException(int int_vector)
{
tcb_t *ct;
getAndResetActiveBreakpoint_t active_bp;
testAndResetSingleStepException_t single_step_info;
#if defined(CONFIG_DEBUG_BUILD) || defined(CONFIG_BENCHMARK_TRACK_KERNEL_ENTRIES)
ksKernelEntry.path = Entry_UserLevelFault;
ksKernelEntry.word = int_vector;
#else
(void)int_vector;
#endif /* DEBUG */
#ifdef CONFIG_BENCHMARK_TRACK_KERNEL_ENTRIES
benchmark_track_start();
#endif
ct = NODE_STATE(ksCurThread);
/* Software break request (INT3) is detected by the vector number */
if (int_vector == int_software_break_request) {
current_fault = seL4_Fault_DebugException_new(getRestartPC(NODE_STATE(ksCurThread)),
0, seL4_SoftwareBreakRequest);
} else {
/* Hardware breakpoint trigger is detected using DR6 */
active_bp = getAndResetActiveBreakpoint(ct);
if (active_bp.bp_num >= 0) {
current_fault = seL4_Fault_DebugException_new(active_bp.vaddr,
active_bp.bp_num,
active_bp.reason);
} else {
single_step_info = testAndResetSingleStepException(ct);
if (single_step_info.ret == true) {
/* If the caller asked us to skip over N instructions before
* generating the next single-step breakpoint, we shouldn't
* bother to construct a fault message until we've skipped N
* instructions.
*/
if (singleStepFaultCounterReady(ct) == false) {
return EXCEPTION_NONE;
}
current_fault = seL4_Fault_DebugException_new(single_step_info.instr_vaddr,
0, seL4_SingleStep);
} else {
return EXCEPTION_SYSCALL_ERROR;
}
}
}
handleFault(NODE_STATE(ksCurThread));
schedule();
activateThread();
return EXCEPTION_NONE;
}
exception_t
decodeIRQHandlerInvocation(word_t invLabel, irq_t irq,
extra_caps_t excaps)
{
switch (invLabel) {
case IRQAckIRQ:
setThreadState(NODE_STATE(ksCurThread), ThreadState_Restart);
invokeIRQHandler_AckIRQ(irq);
return EXCEPTION_NONE;
case IRQSetIRQHandler: {
cap_t ntfnCap;
cte_t *slot;
if (excaps.excaprefs[0] == NULL) {
current_syscall_error.type = seL4_TruncatedMessage;
return EXCEPTION_SYSCALL_ERROR;
}
ntfnCap = excaps.excaprefs[0]->cap;
slot = excaps.excaprefs[0];
if (cap_get_capType(ntfnCap) != cap_notification_cap ||
!cap_notification_cap_get_capNtfnCanSend(ntfnCap)) {
if (cap_get_capType(ntfnCap) != cap_notification_cap) {
userError("IRQSetHandler: provided cap is not an notification capability.");
} else {
userError("IRQSetHandler: caller does not have send rights on the endpoint.");
}
current_syscall_error.type = seL4_InvalidCapability;
current_syscall_error.invalidCapNumber = 0;
return EXCEPTION_SYSCALL_ERROR;
}
setThreadState(NODE_STATE(ksCurThread), ThreadState_Restart);
invokeIRQHandler_SetIRQHandler(irq, ntfnCap, slot);
return EXCEPTION_NONE;
}
case IRQClearIRQHandler:
setThreadState(NODE_STATE(ksCurThread), ThreadState_Restart);
invokeIRQHandler_ClearIRQHandler(irq);
return EXCEPTION_NONE;
default:
userError("IRQHandler: Illegal operation.");
current_syscall_error.type = seL4_IllegalOperation;
return EXCEPTION_SYSCALL_ERROR;
}
}
static void sendRunqueues(void)
{
word_t i;
sendWord((unsigned long)NODE_STATE(ksCurThread));
for (i = 0; i < NUM_READY_QUEUES; i++) {
tcb_t *current = NODE_STATE(ksReadyQueues[i]).head;
if (current != 0) {
while (current != NODE_STATE(ksReadyQueues[i]).end) {
sendWord((unsigned long)current);
current = current -> tcbSchedNext;
}
sendWord((unsigned long)current);
}
}
}
exception_t
decodeIRQControlInvocation(word_t invLabel, word_t length,
cte_t *srcSlot, extra_caps_t excaps,
word_t *buffer)
{
if (invLabel == IRQIssueIRQHandler) {
word_t index, depth, irq_w;
irq_t irq;
cte_t *destSlot;
cap_t cnodeCap;
lookupSlot_ret_t lu_ret;
exception_t status;
if (length < 3 || excaps.excaprefs[0] == NULL) {
current_syscall_error.type = seL4_TruncatedMessage;
return EXCEPTION_SYSCALL_ERROR;
}
irq_w = getSyscallArg(0, buffer);
irq = (irq_t) irq_w;
index = getSyscallArg(1, buffer);
depth = getSyscallArg(2, buffer);
cnodeCap = excaps.excaprefs[0]->cap;
status = Arch_checkIRQ(irq);
if (status != EXCEPTION_NONE) {
return status;
}
if (isIRQActive(irq)) {
current_syscall_error.type = seL4_RevokeFirst;
userError("Rejecting request for IRQ %u. Already active.", (int)irq);
return EXCEPTION_SYSCALL_ERROR;
}
lu_ret = lookupTargetSlot(cnodeCap, index, depth);
if (lu_ret.status != EXCEPTION_NONE) {
userError("Target slot for new IRQ Handler cap invalid: cap %lu, IRQ %u.",
getExtraCPtr(buffer, 0), (int)irq);
return lu_ret.status;
}
destSlot = lu_ret.slot;
status = ensureEmptySlot(destSlot);
if (status != EXCEPTION_NONE) {
userError("Target slot for new IRQ Handler cap not empty: cap %lu, IRQ %u.",
getExtraCPtr(buffer, 0), (int)irq);
return status;
}
setThreadState(NODE_STATE(ksCurThread), ThreadState_Restart);
return invokeIRQControl(irq, destSlot, srcSlot);
} else {
return Arch_decodeIRQControlInvocation(invLabel, length, srcSlot, excaps, buffer);
}
}
void benchmark_track_reset_utilisation(void)
{
tcb_t *tcb = NULL;
word_t tcb_cptr = getRegister(NODE_STATE(ksCurThread), capRegister);
lookupCap_ret_t lu_ret;
word_t cap_type;
lu_ret = lookupCap(NODE_STATE(ksCurThread), tcb_cptr);
/* ensure we got a TCB cap */
cap_type = cap_get_capType(lu_ret.cap);
if (cap_type != cap_thread_cap) {
userError("SysBenchmarkResetThreadUtilisation: cap is not a TCB, halting");
return;
}
tcb = TCB_PTR(cap_thread_cap_get_capTCBPtr(lu_ret.cap));
tcb->benchmark.utilisation = 0;
tcb->benchmark.schedule_start_time = 0;
}
void fastpath_reply_recv(word_t cptr, word_t msgInfo)
{
seL4_MessageInfo_t info;
cap_t ep_cap;
endpoint_t *ep_ptr;
word_t length;
cte_t *callerSlot;
cap_t callerCap;
tcb_t *caller;
word_t badge;
tcb_t *endpointTail;
word_t fault_type;
cap_t newVTable;
vspace_root_t *cap_pd;
pde_t stored_hw_asid;
dom_t dom;
/* Get message info and length */
info = messageInfoFromWord_raw(msgInfo);
length = seL4_MessageInfo_get_length(info);
fault_type = seL4_Fault_get_seL4_FaultType(NODE_STATE(ksCurThread)->tcbFault);
/* Check there's no extra caps, the length is ok and there's no
* saved fault. */
if (unlikely(fastpath_mi_check(msgInfo) ||
fault_type != seL4_Fault_NullFault)) {
slowpath(SysReplyRecv);
}
/* Lookup the cap */
ep_cap = lookup_fp(TCB_PTR_CTE_PTR(NODE_STATE(ksCurThread), tcbCTable)->cap,
cptr);
/* Check it's an endpoint */
if (unlikely(!cap_capType_equals(ep_cap, cap_endpoint_cap) ||
!cap_endpoint_cap_get_capCanReceive(ep_cap))) {
slowpath(SysReplyRecv);
}
/* Check there is nothing waiting on the notification */
if (NODE_STATE(ksCurThread)->tcbBoundNotification &&
notification_ptr_get_state(NODE_STATE(ksCurThread)->tcbBoundNotification) == NtfnState_Active) {
slowpath(SysReplyRecv);
}
/* Get the endpoint address */
ep_ptr = EP_PTR(cap_endpoint_cap_get_capEPPtr(ep_cap));
/* Check that there's not a thread waiting to send */
if (unlikely(endpoint_ptr_get_state(ep_ptr) == EPState_Send)) {
slowpath(SysReplyRecv);
}
/* Only reply if the reply cap is valid. */
callerSlot = TCB_PTR_CTE_PTR(NODE_STATE(ksCurThread), tcbCaller);
callerCap = callerSlot->cap;
if (unlikely(!fastpath_reply_cap_check(callerCap))) {
slowpath(SysReplyRecv);
}
/* Determine who the caller is. */
caller = TCB_PTR(cap_reply_cap_get_capTCBPtr(callerCap));
/* ensure we are not single stepping the caller in ia32 */
#if defined(CONFIG_HARDWARE_DEBUG_API) && defined(CONFIG_ARCH_IA32)
if (caller->tcbArch.tcbContext.breakpointState.single_step_enabled) {
slowpath(SysReplyRecv);
}
#endif
/* Check that the caller has not faulted, in which case a fault
reply is generated instead. */
fault_type = seL4_Fault_get_seL4_FaultType(caller->tcbFault);
if (unlikely(fault_type != seL4_Fault_NullFault)) {
slowpath(SysReplyRecv);
}
/* Get destination thread.*/
newVTable = TCB_PTR_CTE_PTR(caller, tcbVTable)->cap;
/* Get vspace root. */
cap_pd = cap_vtable_cap_get_vspace_root_fp(newVTable);
/* Ensure that the destination has a valid MMU. */
if (unlikely(! isValidVTableRoot_fp(newVTable))) {
slowpath(SysReplyRecv);
}
#ifdef CONFIG_ARCH_AARCH32
/* Get HWASID. */
stored_hw_asid = cap_pd[PD_ASID_SLOT];
#endif
#ifdef CONFIG_ARCH_X86_64
stored_hw_asid.words[0] = cap_pml4_cap_get_capPML4MappedASID(newVTable);
#endif
#ifdef CONFIG_ARCH_AARCH64
stored_hw_asid.words[0] = cap_page_global_directory_cap_get_capPGDMappedASID(newVTable);
#endif
#ifdef CONFIG_ARCH_RISCV
stored_hw_asid.words[0] = cap_page_table_cap_get_capPTMappedASID(newVTable);
#endif
/* Ensure the original caller can be scheduled directly. */
dom = maxDom ? ksCurDomain : 0;
if (unlikely(!isHighestPrio(dom, caller->tcbPriority))) {
slowpath(SysReplyRecv);
}
#ifdef CONFIG_ARCH_AARCH32
/* Ensure the HWASID is valid. */
if (unlikely(!pde_pde_invalid_get_stored_asid_valid(stored_hw_asid))) {
slowpath(SysReplyRecv);
}
#endif
/* Ensure the original caller is in the current domain and can be scheduled directly. */
if (unlikely(caller->tcbDomain != ksCurDomain && maxDom)) {
slowpath(SysReplyRecv);
}
#ifdef ENABLE_SMP_SUPPORT
/* Ensure both threads have the same affinity */
if (unlikely(NODE_STATE(ksCurThread)->tcbAffinity != caller->tcbAffinity)) {
slowpath(SysReplyRecv);
}
#endif /* ENABLE_SMP_SUPPORT */
/*
* --- POINT OF NO RETURN ---
*
* At this stage, we have committed to performing the IPC.
*/
#ifdef CONFIG_BENCHMARK_TRACK_KERNEL_ENTRIES
ksKernelEntry.is_fastpath = true;
#endif
/* Set thread state to BlockedOnReceive */
thread_state_ptr_mset_blockingObject_tsType(
&NODE_STATE(ksCurThread)->tcbState, (word_t)ep_ptr, ThreadState_BlockedOnReceive);
thread_state_ptr_set_blockingIPCCanGrant(&NODE_STATE(ksCurThread)->tcbState,
cap_endpoint_cap_get_capCanGrant(ep_cap));;
/* Place the thread in the endpoint queue */
endpointTail = endpoint_ptr_get_epQueue_tail_fp(ep_ptr);
if (likely(!endpointTail)) {
NODE_STATE(ksCurThread)->tcbEPPrev = NULL;
NODE_STATE(ksCurThread)->tcbEPNext = NULL;
/* Set head/tail of queue and endpoint state. */
endpoint_ptr_set_epQueue_head_np(ep_ptr, TCB_REF(NODE_STATE(ksCurThread)));
endpoint_ptr_mset_epQueue_tail_state(ep_ptr, TCB_REF(NODE_STATE(ksCurThread)),
EPState_Recv);
} else {
/* Append current thread onto the queue. */
endpointTail->tcbEPNext = NODE_STATE(ksCurThread);
NODE_STATE(ksCurThread)->tcbEPPrev = endpointTail;
NODE_STATE(ksCurThread)->tcbEPNext = NULL;
/* Update tail of queue. */
endpoint_ptr_mset_epQueue_tail_state(ep_ptr, TCB_REF(NODE_STATE(ksCurThread)),
EPState_Recv);
}
/* Delete the reply cap. */
mdb_node_ptr_mset_mdbNext_mdbRevocable_mdbFirstBadged(
&CTE_PTR(mdb_node_get_mdbPrev(callerSlot->cteMDBNode))->cteMDBNode,
0, 1, 1);
callerSlot->cap = cap_null_cap_new();
callerSlot->cteMDBNode = nullMDBNode;
/* I know there's no fault, so straight to the transfer. */
/* Replies don't have a badge. */
badge = 0;
fastpath_copy_mrs(length, NODE_STATE(ksCurThread), caller);
/* Dest thread is set Running, but not queued. */
thread_state_ptr_set_tsType_np(&caller->tcbState,
ThreadState_Running);
switchToThread_fp(caller, cap_pd, stored_hw_asid);
msgInfo = wordFromMessageInfo(seL4_MessageInfo_set_capsUnwrapped(info, 0));
fastpath_restore(badge, msgInfo, NODE_STATE(ksCurThread));
}
void
#ifdef ARCH_X86
NORETURN
#endif
fastpath_call(word_t cptr, word_t msgInfo)
{
seL4_MessageInfo_t info;
cap_t ep_cap;
endpoint_t *ep_ptr;
word_t length;
tcb_t *dest;
word_t badge;
cte_t *replySlot, *callerSlot;
cap_t newVTable;
vspace_root_t *cap_pd;
pde_t stored_hw_asid;
word_t fault_type;
dom_t dom;
word_t replyCanGrant;
/* Get message info, length, and fault type. */
info = messageInfoFromWord_raw(msgInfo);
length = seL4_MessageInfo_get_length(info);
fault_type = seL4_Fault_get_seL4_FaultType(NODE_STATE(ksCurThread)->tcbFault);
/* Check there's no extra caps, the length is ok and there's no
* saved fault. */
if (unlikely(fastpath_mi_check(msgInfo) ||
fault_type != seL4_Fault_NullFault)) {
slowpath(SysCall);
}
/* Lookup the cap */
ep_cap = lookup_fp(TCB_PTR_CTE_PTR(NODE_STATE(ksCurThread), tcbCTable)->cap, cptr);
/* Check it's an endpoint */
if (unlikely(!cap_capType_equals(ep_cap, cap_endpoint_cap) ||
!cap_endpoint_cap_get_capCanSend(ep_cap))) {
slowpath(SysCall);
}
/* Get the endpoint address */
ep_ptr = EP_PTR(cap_endpoint_cap_get_capEPPtr(ep_cap));
/* Get the destination thread, which is only going to be valid
* if the endpoint is valid. */
dest = TCB_PTR(endpoint_ptr_get_epQueue_head(ep_ptr));
/* Check that there's a thread waiting to receive */
if (unlikely(endpoint_ptr_get_state(ep_ptr) != EPState_Recv)) {
slowpath(SysCall);
}
/* ensure we are not single stepping the destination in ia32 */
#if defined(CONFIG_HARDWARE_DEBUG_API) && defined(CONFIG_ARCH_IA32)
if (dest->tcbArch.tcbContext.breakpointState.single_step_enabled) {
slowpath(SysCall);
}
#endif
/* Get destination thread.*/
newVTable = TCB_PTR_CTE_PTR(dest, tcbVTable)->cap;
/* Get vspace root. */
cap_pd = cap_vtable_cap_get_vspace_root_fp(newVTable);
/* Ensure that the destination has a valid VTable. */
if (unlikely(! isValidVTableRoot_fp(newVTable))) {
slowpath(SysCall);
}
#ifdef CONFIG_ARCH_AARCH32
/* Get HW ASID */
stored_hw_asid = cap_pd[PD_ASID_SLOT];
#endif
#ifdef CONFIG_ARCH_X86_64
/* borrow the stored_hw_asid for PCID */
stored_hw_asid.words[0] = cap_pml4_cap_get_capPML4MappedASID_fp(newVTable);
#endif
#ifdef CONFIG_ARCH_AARCH64
stored_hw_asid.words[0] = cap_page_global_directory_cap_get_capPGDMappedASID(newVTable);
#endif
#ifdef CONFIG_ARCH_RISCV
/* Get HW ASID */
stored_hw_asid.words[0] = cap_page_table_cap_get_capPTMappedASID(newVTable);
#endif
/* let gcc optimise this out for 1 domain */
dom = maxDom ? ksCurDomain : 0;
/* ensure only the idle thread or lower prio threads are present in the scheduler */
if (likely(dest->tcbPriority < NODE_STATE(ksCurThread->tcbPriority)) &&
!isHighestPrio(dom, dest->tcbPriority)) {
slowpath(SysCall);
}
/* Ensure that the endpoint has has grant or grant-reply rights so that we can
* create the reply cap */
if (unlikely(!cap_endpoint_cap_get_capCanGrant(ep_cap) &&
!cap_endpoint_cap_get_capCanGrantReply(ep_cap))) {
slowpath(SysCall);
}
#ifdef CONFIG_ARCH_AARCH32
if (unlikely(!pde_pde_invalid_get_stored_asid_valid(stored_hw_asid))) {
slowpath(SysCall);
}
#endif
/* Ensure the original caller is in the current domain and can be scheduled directly. */
if (unlikely(dest->tcbDomain != ksCurDomain && maxDom)) {
slowpath(SysCall);
}
#ifdef ENABLE_SMP_SUPPORT
/* Ensure both threads have the same affinity */
if (unlikely(NODE_STATE(ksCurThread)->tcbAffinity != dest->tcbAffinity)) {
slowpath(SysCall);
}
#endif /* ENABLE_SMP_SUPPORT */
/*
* --- POINT OF NO RETURN ---
*
* At this stage, we have committed to performing the IPC.
*/
#ifdef CONFIG_BENCHMARK_TRACK_KERNEL_ENTRIES
ksKernelEntry.is_fastpath = true;
#endif
/* Dequeue the destination. */
endpoint_ptr_set_epQueue_head_np(ep_ptr, TCB_REF(dest->tcbEPNext));
if (unlikely(dest->tcbEPNext)) {
dest->tcbEPNext->tcbEPPrev = NULL;
} else {
endpoint_ptr_mset_epQueue_tail_state(ep_ptr, 0, EPState_Idle);
}
badge = cap_endpoint_cap_get_capEPBadge(ep_cap);
/* Block sender */
thread_state_ptr_set_tsType_np(&NODE_STATE(ksCurThread)->tcbState,
ThreadState_BlockedOnReply);
/* Get sender reply slot */
replySlot = TCB_PTR_CTE_PTR(NODE_STATE(ksCurThread), tcbReply);
/* Get dest caller slot */
callerSlot = TCB_PTR_CTE_PTR(dest, tcbCaller);
/* Insert reply cap */
replyCanGrant = thread_state_ptr_get_blockingIPCCanGrant(&dest->tcbState);;
cap_reply_cap_ptr_new_np(&callerSlot->cap, replyCanGrant, 0,
TCB_REF(NODE_STATE(ksCurThread)));
mdb_node_ptr_set_mdbPrev_np(&callerSlot->cteMDBNode, CTE_REF(replySlot));
mdb_node_ptr_mset_mdbNext_mdbRevocable_mdbFirstBadged(
&replySlot->cteMDBNode, CTE_REF(callerSlot), 1, 1);
fastpath_copy_mrs(length, NODE_STATE(ksCurThread), dest);
/* Dest thread is set Running, but not queued. */
thread_state_ptr_set_tsType_np(&dest->tcbState,
ThreadState_Running);
switchToThread_fp(dest, cap_pd, stored_hw_asid);
msgInfo = wordFromMessageInfo(seL4_MessageInfo_set_capsUnwrapped(info, 0));
fastpath_restore(badge, msgInfo, NODE_STATE(ksCurThread));
}
exception_t
Arch_decodeIRQControlInvocation(word_t invLabel, word_t length, cte_t *srcSlot, extra_caps_t excaps, word_t *buffer)
{
word_t index, depth;
cte_t *destSlot;
cap_t cnodeCap;
lookupSlot_ret_t lu_ret;
exception_t status;
irq_t irq;
word_t vector;
if (!config_set(CONFIG_IRQ_IOAPIC)) {
userError("IRQControl: Illegal operation.");
current_syscall_error.type = seL4_IllegalOperation;
return EXCEPTION_SYSCALL_ERROR;
}
/* check the common parameters */
if (length < 7 || excaps.excaprefs[0] == NULL) {
userError("IRQControl: Truncated message");
current_syscall_error.type = seL4_TruncatedMessage;
return EXCEPTION_SYSCALL_ERROR;
}
index = getSyscallArg(0, buffer);
depth = getSyscallArg(1, buffer);
cnodeCap = excaps.excaprefs[0]->cap;
irq = getSyscallArg(6, buffer);
if (irq > irq_user_max - irq_user_min) {
userError("IRQControl: Invalid irq %ld should be between 0-%ld", (long)irq, (long)(irq_user_max - irq_user_min - 1));
current_syscall_error.type = seL4_RangeError;
current_syscall_error.rangeErrorMin = 0;
current_syscall_error.rangeErrorMax = irq_user_max - irq_user_min;
return EXCEPTION_SYSCALL_ERROR;
}
irq += irq_user_min;
vector = (word_t)irq + IRQ_INT_OFFSET;
lu_ret = lookupTargetSlot(cnodeCap, index, depth);
if (lu_ret.status != EXCEPTION_NONE) {
return lu_ret.status;
}
destSlot = lu_ret.slot;
status = ensureEmptySlot(destSlot);
if (status != EXCEPTION_NONE) {
return status;
}
switch (invLabel) {
case X86IRQIssueIRQHandlerIOAPIC: {
word_t ioapic = getSyscallArg(2, buffer);
word_t pin = getSyscallArg(3, buffer);
word_t level = getSyscallArg(4, buffer);
word_t polarity = getSyscallArg(5, buffer);
if (isIRQActive(irq)) {
userError("IOAPICGet: IRQ %d is already active.", (int)irq);
current_syscall_error.type = seL4_RevokeFirst;
return EXCEPTION_SYSCALL_ERROR;
}
status = ioapic_decode_map_pin_to_vector(ioapic, pin, level, polarity, vector);
if (status != EXCEPTION_NONE) {
return status;
}
setThreadState(NODE_STATE(ksCurThread), ThreadState_Restart);
return invokeIssueIRQHandlerIOAPIC(irq, ioapic, pin, level, polarity, vector, destSlot, srcSlot);
}
break;
case X86IRQIssueIRQHandlerMSI: {
word_t pci_bus = getSyscallArg(2, buffer);
word_t pci_dev = getSyscallArg(3, buffer);
word_t pci_func = getSyscallArg(4, buffer);
word_t handle = getSyscallArg(5, buffer);
x86_irq_state_t irqState;
/* until we support msi interrupt remaping through vt-d we ignore the
* vector and trust the user */
(void)vector;
if (isIRQActive(irq)) {
current_syscall_error.type = seL4_RevokeFirst;
return EXCEPTION_SYSCALL_ERROR;
}
if (pci_bus > PCI_BUS_MAX) {
current_syscall_error.type = seL4_RangeError;
current_syscall_error.rangeErrorMin = 0;
current_syscall_error.rangeErrorMax = PCI_BUS_MAX;
return EXCEPTION_SYSCALL_ERROR;
}
if (pci_dev > PCI_DEV_MAX) {
current_syscall_error.type = seL4_RangeError;
current_syscall_error.rangeErrorMin = 0;
current_syscall_error.rangeErrorMax = PCI_DEV_MAX;
return EXCEPTION_SYSCALL_ERROR;
}
if (pci_func > PCI_FUNC_MAX) {
current_syscall_error.type = seL4_RangeError;
current_syscall_error.rangeErrorMin = 0;
current_syscall_error.rangeErrorMax = PCI_FUNC_MAX;
return EXCEPTION_SYSCALL_ERROR;
}
irqState = x86_irq_state_irq_msi_new(pci_bus, pci_dev, pci_func, handle);
setThreadState(NODE_STATE(ksCurThread), ThreadState_Restart);
return Arch_invokeIRQControl(irq, destSlot, srcSlot, irqState);
}
break;
default:
userError("IRQControl: Illegal operation.");
current_syscall_error.type = seL4_IllegalOperation;
return EXCEPTION_SYSCALL_ERROR;
}
}