--- /dev/null
+/*
+ * Copyright (c) 2003-2004 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#include <stdint.h>
+#include <mach/boolean.h>
+#include <mach/mach_types.h>
+
+#include <kern/kern_types.h>
+#include <kern/processor.h>
+#include <kern/thread_call.h>
+#include <kern/kalloc.h>
+#include <kern/thread.h>
+
+#include <ppc/machine_routines.h>
+#include <ppc/cpu_data.h>
+#include <ppc/cpu_internal.h>
+#include <ppc/exception.h>
+#include <ppc/thread.h>
+#include <ppc/trap.h>
+
+#include <chud/chud_xnu.h>
+#include <chud/chud_xnu_private.h>
+
+__private_extern__
+void chudxnu_cancel_all_callbacks(void)
+{
+ chudxnu_cpu_timer_callback_cancel_all();
+ chudxnu_trap_callback_cancel();
+ chudxnu_interrupt_callback_cancel();
+ chudxnu_perfmon_ast_callback_cancel();
+ chudxnu_cpusig_callback_cancel();
+ chudxnu_kdebug_callback_cancel();
+ chudxnu_thread_timer_callback_cancel();
+ chudxnu_syscall_callback_cancel();
+}
+
+static chudcpu_data_t chudcpu_boot_cpu;
+
+void *chudxnu_per_proc_alloc(boolean_t boot_processor)
+{
+ chudcpu_data_t *chud_proc_info;
+
+ if (boot_processor) {
+ chud_proc_info = &chudcpu_boot_cpu;
+ } else {
+ chud_proc_info = (chudcpu_data_t *)kalloc(sizeof(chudcpu_data_t));
+ if (chud_proc_info == (chudcpu_data_t *)NULL) {
+ return (void *)NULL;
+ }
+ }
+ bzero((char *)chud_proc_info, sizeof(chudcpu_data_t));
+ chud_proc_info->t_deadline = 0xFFFFFFFFFFFFFFFFULL;
+ return (void *)chud_proc_info;
+}
+
+void chudxnu_per_proc_free(void *per_proc_chud)
+{
+ if (per_proc_chud == (void *)&chudcpu_boot_cpu) {
+ return;
+ } else {
+ kfree(per_proc_chud,sizeof(chudcpu_data_t));
+ }
+}
+
+static void chudxnu_private_cpu_timer_callback(timer_call_param_t param0, timer_call_param_t param1)
+{
+ chudcpu_data_t *chud_proc_info;
+ boolean_t oldlevel;
+ struct ppc_thread_state64 state;
+ mach_msg_type_number_t count;
+ chudxnu_cpu_timer_callback_func_t fn = NULL;
+
+ oldlevel = ml_set_interrupts_enabled(FALSE);
+ chud_proc_info = (chudcpu_data_t *)(getPerProc()->pp_chud);
+
+ count = PPC_THREAD_STATE64_COUNT;
+ if(chudxnu_thread_get_state(current_thread(), PPC_THREAD_STATE64, (thread_state_t)&state, &count, FALSE)==KERN_SUCCESS) {
+ fn = chud_proc_info->cpu_timer_callback_fn;
+ if(fn) {
+ (fn)(PPC_THREAD_STATE64, (thread_state_t)&state, count);
+ }
+ }
+
+ ml_set_interrupts_enabled(oldlevel);
+}
+
+__private_extern__
+kern_return_t chudxnu_cpu_timer_callback_enter(chudxnu_cpu_timer_callback_func_t func, uint32_t time, uint32_t units)
+{
+ chudcpu_data_t *chud_proc_info;
+ boolean_t oldlevel;
+
+ oldlevel = ml_set_interrupts_enabled(FALSE);
+ chud_proc_info = (chudcpu_data_t *)(getPerProc()->pp_chud);
+
+ timer_call_cancel(&(chud_proc_info->cpu_timer_call)); // cancel any existing callback for this cpu
+
+ chud_proc_info->cpu_timer_callback_fn = func;
+
+ clock_interval_to_deadline(time, units, &(chud_proc_info->t_deadline));
+ timer_call_setup(&(chud_proc_info->cpu_timer_call), chudxnu_private_cpu_timer_callback, NULL);
+ timer_call_enter(&(chud_proc_info->cpu_timer_call), chud_proc_info->t_deadline);
+
+ ml_set_interrupts_enabled(oldlevel);
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_cpu_timer_callback_cancel(void)
+{
+ chudcpu_data_t *chud_proc_info;
+ boolean_t oldlevel;
+
+ oldlevel = ml_set_interrupts_enabled(FALSE);
+ chud_proc_info = (chudcpu_data_t *)(getPerProc()->pp_chud);
+
+ timer_call_cancel(&(chud_proc_info->cpu_timer_call));
+ chud_proc_info->t_deadline = chud_proc_info->t_deadline | ~(chud_proc_info->t_deadline); // set to max value
+ chud_proc_info->cpu_timer_callback_fn = NULL;
+
+ ml_set_interrupts_enabled(oldlevel);
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_cpu_timer_callback_cancel_all(void)
+{
+ unsigned int cpu;
+ chudcpu_data_t *chud_proc_info;
+
+ for(cpu=0; cpu<real_ncpus; cpu++) {
+ if ((PerProcTable[cpu].ppe_vaddr == 0)
+ || (PerProcTable[cpu].ppe_vaddr->pp_chud == 0))
+ continue;
+ chud_proc_info = (chudcpu_data_t *)PerProcTable[cpu].ppe_vaddr->pp_chud;
+ timer_call_cancel(&(chud_proc_info->cpu_timer_call));
+ chud_proc_info->t_deadline = chud_proc_info->t_deadline | ~(chud_proc_info->t_deadline); // set to max value
+ chud_proc_info->cpu_timer_callback_fn = NULL;
+ }
+ return KERN_SUCCESS;
+}
+
+#pragma mark **** trap ****
+static chudxnu_trap_callback_func_t trap_callback_fn = NULL;
+
+#define TRAP_ENTRY_POINT(t) ((t==T_RESET) ? 0x100 : \
+ (t==T_MACHINE_CHECK) ? 0x200 : \
+ (t==T_DATA_ACCESS) ? 0x300 : \
+ (t==T_DATA_SEGMENT) ? 0x380 : \
+ (t==T_INSTRUCTION_ACCESS) ? 0x400 : \
+ (t==T_INSTRUCTION_SEGMENT) ? 0x480 : \
+ (t==T_INTERRUPT) ? 0x500 : \
+ (t==T_ALIGNMENT) ? 0x600 : \
+ (t==T_PROGRAM) ? 0x700 : \
+ (t==T_FP_UNAVAILABLE) ? 0x800 : \
+ (t==T_DECREMENTER) ? 0x900 : \
+ (t==T_IO_ERROR) ? 0xa00 : \
+ (t==T_RESERVED) ? 0xb00 : \
+ (t==T_SYSTEM_CALL) ? 0xc00 : \
+ (t==T_TRACE) ? 0xd00 : \
+ (t==T_FP_ASSIST) ? 0xe00 : \
+ (t==T_PERF_MON) ? 0xf00 : \
+ (t==T_VMX) ? 0xf20 : \
+ (t==T_INVALID_EXCP0) ? 0x1000 : \
+ (t==T_INVALID_EXCP1) ? 0x1100 : \
+ (t==T_INVALID_EXCP2) ? 0x1200 : \
+ (t==T_INSTRUCTION_BKPT) ? 0x1300 : \
+ (t==T_SYSTEM_MANAGEMENT) ? 0x1400 : \
+ (t==T_SOFT_PATCH) ? 0x1500 : \
+ (t==T_ALTIVEC_ASSIST) ? 0x1600 : \
+ (t==T_THERMAL) ? 0x1700 : \
+ (t==T_ARCHDEP0) ? 0x1800 : \
+ (t==T_INSTRUMENTATION) ? 0x2000 : \
+ 0x0)
+
+static kern_return_t chudxnu_private_trap_callback(int trapno, struct savearea *ssp, unsigned int dsisr, unsigned int dar)
+{
+ boolean_t oldlevel = ml_set_interrupts_enabled(FALSE);
+ kern_return_t retval = KERN_FAILURE;
+ uint32_t trapentry = TRAP_ENTRY_POINT(trapno);
+ chudxnu_trap_callback_func_t fn = trap_callback_fn;
+
+ if(trapentry!=0x0) {
+ if(fn) {
+ struct ppc_thread_state64 state;
+ mach_msg_type_number_t count = PPC_THREAD_STATE64_COUNT;
+ chudxnu_copy_savearea_to_threadstate(PPC_THREAD_STATE64, (thread_state_t)&state, &count, ssp);
+ retval = (fn)(trapentry, PPC_THREAD_STATE64, (thread_state_t)&state, count);
+ }
+ }
+
+ ml_set_interrupts_enabled(oldlevel);
+
+ return retval;
+}
+
+__private_extern__
+kern_return_t chudxnu_trap_callback_enter(chudxnu_trap_callback_func_t func)
+{
+ trap_callback_fn = func;
+ perfTrapHook = chudxnu_private_trap_callback;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_trap_callback_cancel(void)
+{
+ trap_callback_fn = NULL;
+ perfTrapHook = NULL;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+#pragma mark **** ast ****
+static chudxnu_perfmon_ast_callback_func_t perfmon_ast_callback_fn = NULL;
+
+static kern_return_t chudxnu_private_chud_ast_callback(int trapno, struct savearea *ssp, unsigned int dsisr, unsigned int dar)
+{
+ boolean_t oldlevel = ml_set_interrupts_enabled(FALSE);
+ ast_t *myast = ast_pending();
+ kern_return_t retval = KERN_FAILURE;
+ chudxnu_perfmon_ast_callback_func_t fn = perfmon_ast_callback_fn;
+
+ if(*myast & AST_CHUD_URGENT) {
+ *myast &= ~(AST_CHUD_URGENT | AST_CHUD);
+ if((*myast & AST_PREEMPTION) != AST_PREEMPTION) *myast &= ~(AST_URGENT);
+ retval = KERN_SUCCESS;
+ } else if(*myast & AST_CHUD) {
+ *myast &= ~(AST_CHUD);
+ retval = KERN_SUCCESS;
+ }
+
+ if(fn) {
+ struct ppc_thread_state64 state;
+ mach_msg_type_number_t count;
+ count = PPC_THREAD_STATE64_COUNT;
+
+ if(chudxnu_thread_get_state(current_thread(), PPC_THREAD_STATE64, (thread_state_t)&state, &count, FALSE)==KERN_SUCCESS) {
+ (fn)(PPC_THREAD_STATE64, (thread_state_t)&state, count);
+ }
+ }
+
+#if 0
+ // ASTs from ihandler go through thandler and are made to look like traps
+ // always handle AST_CHUD_URGENT if there's a callback
+ // only handle AST_CHUD if it's the only AST pending
+ if(perfmon_ast_callback_fn && ((*myast & AST_CHUD_URGENT) || ((*myast & AST_CHUD) && !(*myast & AST_URGENT)))) {
+ struct ppc_thread_state64 state;
+ mach_msg_type_number_t count = PPC_THREAD_STATE64_COUNT;
+ chudxnu_copy_savearea_to_threadstate(PPC_THREAD_STATE64, (thread_state_t)&state, &count, ssp);
+ if(*myast & AST_CHUD_URGENT) {
+ *myast &= ~(AST_CHUD_URGENT | AST_CHUD);
+ if((*myast & AST_PREEMPTION) != AST_PREEMPTION) *myast &= ~(AST_URGENT);
+ retval = KERN_SUCCESS;
+ } else if(*myast & AST_CHUD) {
+ *myast &= ~(AST_CHUD);
+ retval = KERN_SUCCESS;
+ }
+ (perfmon_ast_callback_fn)(PPC_THREAD_STATE64, (thread_state_t)&state, count);
+ }
+#endif
+
+ ml_set_interrupts_enabled(oldlevel);
+ return retval;
+}
+
+__private_extern__
+kern_return_t chudxnu_perfmon_ast_callback_enter(chudxnu_perfmon_ast_callback_func_t func)
+{
+ perfmon_ast_callback_fn = func;
+ perfASTHook = chudxnu_private_chud_ast_callback;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_perfmon_ast_callback_cancel(void)
+{
+ perfmon_ast_callback_fn = NULL;
+ perfASTHook = NULL;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_perfmon_ast_send_urgent(boolean_t urgent)
+{
+ boolean_t oldlevel = ml_set_interrupts_enabled(FALSE);
+ ast_t *myast = ast_pending();
+
+ if(urgent) {
+ *myast |= (AST_CHUD_URGENT | AST_URGENT);
+ } else {
+ *myast |= (AST_CHUD);
+ }
+
+ ml_set_interrupts_enabled(oldlevel);
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_perfmon_ast_send(void)
+{
+ return chudxnu_perfmon_ast_send_urgent(TRUE);
+}
+
+#pragma mark **** interrupt ****
+static chudxnu_interrupt_callback_func_t interrupt_callback_fn = NULL;
+//extern perfCallback perfIntHook; /* function hook into interrupt() */
+
+static kern_return_t chudxnu_private_interrupt_callback(int trapno, struct savearea *ssp, unsigned int dsisr, unsigned int dar)
+{
+ chudxnu_interrupt_callback_func_t fn = interrupt_callback_fn;
+
+ if(fn) {
+ struct ppc_thread_state64 state;
+ mach_msg_type_number_t count = PPC_THREAD_STATE64_COUNT;
+ chudxnu_copy_savearea_to_threadstate(PPC_THREAD_STATE64, (thread_state_t)&state, &count, ssp);
+ return (fn)(TRAP_ENTRY_POINT(trapno), PPC_THREAD_STATE64, (thread_state_t)&state, count);
+ } else {
+ return KERN_FAILURE;
+ }
+}
+
+__private_extern__
+kern_return_t chudxnu_interrupt_callback_enter(chudxnu_interrupt_callback_func_t func)
+{
+ interrupt_callback_fn = func;
+ perfIntHook = chudxnu_private_interrupt_callback;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_interrupt_callback_cancel(void)
+{
+ interrupt_callback_fn = NULL;
+ perfIntHook = NULL;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+#pragma mark **** cpu signal ****
+static chudxnu_cpusig_callback_func_t cpusig_callback_fn = NULL;
+extern perfCallback perfCpuSigHook; /* function hook into cpu_signal_handler() */
+
+static kern_return_t chudxnu_private_cpu_signal_handler(int request, struct savearea *ssp, unsigned int arg0, unsigned int arg1)
+{
+ chudxnu_cpusig_callback_func_t fn = cpusig_callback_fn;
+
+ if(fn) {
+ struct ppc_thread_state64 state;
+ mach_msg_type_number_t count = PPC_THREAD_STATE64_COUNT;
+ chudxnu_copy_savearea_to_threadstate(PPC_THREAD_STATE64, (thread_state_t)&state, &count, ssp);
+ (fn)(request, PPC_THREAD_STATE64, (thread_state_t)&state, count);
+ }
+ return KERN_SUCCESS; // ignored
+}
+
+__private_extern__
+kern_return_t chudxnu_cpusig_callback_enter(chudxnu_cpusig_callback_func_t func)
+{
+ cpusig_callback_fn = func;
+ perfCpuSigHook = chudxnu_private_cpu_signal_handler;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_cpusig_callback_cancel(void)
+{
+ cpusig_callback_fn = NULL;
+ perfCpuSigHook = NULL;
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+ return KERN_SUCCESS;
+}
+
+__private_extern__
+kern_return_t chudxnu_cpusig_send(int otherCPU, uint32_t request)
+{
+ int thisCPU;
+ kern_return_t retval = KERN_FAILURE;
+ int retries = 0;
+ boolean_t oldlevel;
+ uint32_t temp[2];
+
+ oldlevel = ml_set_interrupts_enabled(FALSE);
+ thisCPU = cpu_number();
+
+ if(thisCPU!=otherCPU) {
+ temp[0] = 0xFFFFFFFF; /* set sync flag */
+ temp[1] = request; /* set request */
+ __asm__ volatile("eieio"); /* force order */
+ __asm__ volatile("sync"); /* force to memory */
+
+ do {
+ retval=cpu_signal(otherCPU, SIGPcpureq, CPRQchud, (uint32_t)&temp);
+ } while(retval!=KERN_SUCCESS && (retries++)<16);
+
+ if(retries>=16) {
+ retval = KERN_FAILURE;
+ } else {
+ retval = hw_cpu_sync(temp, LockTimeOut); /* wait for the other processor */
+ if(!retval) {
+ retval = KERN_FAILURE;
+ } else {
+ retval = KERN_SUCCESS;
+ }
+ }
+ } else {
+ retval = KERN_INVALID_ARGUMENT;
+ }
+
+ ml_set_interrupts_enabled(oldlevel);
+ return retval;
+}
projects / apple / xnu.git / blobdiff