/*ARGSUSED*/
static int
xen_uppc_addspl(int irqno, int ipl, int min_ipl, int max_ipl)
{
int ret = PSM_SUCCESS;
cpuset_t cpus;
if (irqno >= 0 && irqno <= MAX_ISA_IRQ)
atomic_add_16(&xen_uppc_irq_shared_table[irqno], 1);
/*
* We are called at splhi() so we can't call anything that might end
* up trying to context switch.
*/
if (irqno >= PIRQ_BASE && irqno < NR_PIRQS &&
DOMAIN_IS_INITDOMAIN(xen_info)) {
CPUSET_ZERO(cpus);
CPUSET_ADD(cpus, 0);
ec_setup_pirq(irqno, ipl, &cpus);
} else {
/*
* Set priority/affinity/enable for non PIRQs
*/
ret = ec_set_irq_priority(irqno, ipl);
ASSERT(ret == 0);
CPUSET_ZERO(cpus);
CPUSET_ADD(cpus, 0);
ec_set_irq_affinity(irqno, cpus);
ec_enable_irq(irqno);
}
return (ret);
}
void
softcall_init(void)
{
softcall_t *sc;
softcalls = kmem_zalloc(sizeof (softcall_t) * NSOFTCALLS, KM_SLEEP);
softcall_cpuset = kmem_zalloc(sizeof (cpuset_t), KM_SLEEP);
for (sc = softcalls; sc < &softcalls[NSOFTCALLS]; sc++) {
sc->sc_next = softfree;
softfree = sc;
}
mutex_init(&softcall_lock, NULL, MUTEX_SPIN,
(void *)ipltospl(SPL8));
softcall_state = SOFT_IDLE;
softcall_tick = lbolt;
if (softcall_delay < 0)
softcall_delay = 1;
/*
* Since softcall_delay is expressed as 1 = 10 milliseconds.
*/
softcall_delay = softcall_delay * (hz/100);
CPUSET_ZERO(*softcall_cpuset);
}
int
__gnat_set_affinity (int tid, unsigned cpu)
{
cpuset_t cpuset;
CPUSET_ZERO(cpuset);
CPUSET_SET(cpuset, cpu);
return taskCpuAffinitySet (tid, cpu);
}
/*
* Ensure counters are enabled on the given processor.
*/
void
kcpc_remote_program(cpu_t *cp)
{
cpuset_t set;
CPUSET_ZERO(set);
CPUSET_ADD(set, cp->cpu_id);
xc_sync(0, 0, 0, CPUSET2BV(set), (xc_func_t)kcpc_remoteprogram_func);
}
long
ACE_OS::num_processors_online (void)
{
ACE_OS_TRACE ("ACE_OS::num_processors_online");
#if defined (ACE_HAS_PHARLAP)
return 1;
#elif defined (ACE_WIN32)
SYSTEM_INFO sys_info;
::GetSystemInfo (&sys_info);
long active_processors = 0;
DWORD_PTR mask = sys_info.dwActiveProcessorMask;
while (mask != 0)
{
if (mask & 1)
++active_processors;
mask >>= 1;
}
return active_processors;
#elif defined (ACE_HAS_VXCPULIB)
long num_cpu = 0;
cpuset_t cpuset;
CPUSET_ZERO (cpuset);
cpuset = vxCpuEnabledGet();
unsigned int const maxcpu = vxCpuConfiguredGet();
for (unsigned int i =0; i < maxcpu; i++)
{
if (CPUSET_ISSET (cpuset, i))
{
++num_cpu;
}
}
return num_cpu;
#elif defined (_SC_NPROCESSORS_ONLN)
return ::sysconf (_SC_NPROCESSORS_ONLN);
#elif defined (ACE_HAS_SYSCTL)
int num_processors;
int mib[2] = { CTL_HW, HW_NCPU };
size_t len = sizeof (num_processors);
if (::sysctl (mib, 2, &num_processors, &len, 0, 0) != -1)
return num_processors;
else
return -1;
#elif defined (__hpux)
struct pst_dynamic psd;
if (::pstat_getdynamic (&psd, sizeof (psd), (size_t) 1, 0) != -1)
return psd.psd_proc_cnt;
else
return -1;
#else
ACE_NOTSUP_RETURN (-1);
#endif
}
/*
* Jump to the fast reboot switcher. This function never returns.
*/
void
fast_reboot()
{
processorid_t bootcpuid = 0;
extern uintptr_t postbootkernelbase;
extern char fb_swtch_image[];
fastboot_file_t *fb;
int i;
postbootkernelbase = 0;
fb = &newkernel.fi_files[FASTBOOT_SWTCH];
/*
* Map the address into both the current proc's address
* space and the kernel's address space in case the panic
* is forced by kmdb.
*/
if (&kas != curproc->p_as) {
hat_devload(curproc->p_as->a_hat, (caddr_t)fb->fb_va,
MMU_PAGESIZE, mmu_btop(fb->fb_dest_pa),
PROT_READ | PROT_WRITE | PROT_EXEC,
HAT_LOAD_NOCONSIST | HAT_LOAD_LOCK);
}
bcopy((void *)fb_swtch_image, (void *)fb->fb_va, fb->fb_size);
/*
* Set fb_va to fake_va
*/
for (i = 0; i < FASTBOOT_MAX_FILES_MAP; i++) {
newkernel.fi_files[i].fb_va = fake_va;
}
if (panicstr && CPU->cpu_id != bootcpuid &&
CPU_ACTIVE(cpu_get(bootcpuid))) {
extern void panic_idle(void);
cpuset_t cpuset;
CPUSET_ZERO(cpuset);
CPUSET_ADD(cpuset, bootcpuid);
xc_priority((xc_arg_t)&newkernel, 0, 0, CPUSET2BV(cpuset),
(xc_func_t)fastboot_xc_func);
panic_idle();
} else
(void) fastboot_xc_func(&newkernel, 0, 0);
}
/*
* Gets called when softcall queue is not moving forward. We choose
* a CPU and poke except the ones which are already poked.
*/
static int
softcall_choose_cpu()
{
cpu_t *cplist = CPU;
cpu_t *cp;
int intr_load = INT_MAX;
int cpuid = -1;
cpuset_t poke;
int s;
ASSERT(getpil() >= DISP_LEVEL);
ASSERT(ncpus > 1);
ASSERT(MUTEX_HELD(&softcall_lock));
CPUSET_ZERO(poke);
/*
* The hint is to start from current CPU.
*/
cp = cplist;
do {
if (CPU_IN_SET(*softcall_cpuset, cp->cpu_id) ||
(cp->cpu_flags & CPU_ENABLE) == 0)
continue;
/* if CPU is not busy */
if (cp->cpu_intrload == 0) {
cpuid = cp->cpu_id;
break;
}
if (cp->cpu_intrload < intr_load) {
cpuid = cp->cpu_id;
intr_load = cp->cpu_intrload;
} else if (cp->cpu_intrload == intr_load) {
/*
* We want to poke CPUs having similar
* load because we don't know which CPU is
* can acknowledge level1 interrupt. The
* list of such CPUs should not be large.
*/
if (cpuid != -1) {
/*
* Put the last CPU chosen because
* it also has same interrupt load.
*/
CPUSET_ADD(poke, cpuid);
cpuid = -1;
}
CPUSET_ADD(poke, cp->cpu_id);
}
} while ((cp = cp->cpu_next_onln) != cplist);
/* if we found a CPU which suits best to poke */
if (cpuid != -1) {
CPUSET_ZERO(poke);
CPUSET_ADD(poke, cpuid);
}
if (CPUSET_ISNULL(poke)) {
mutex_exit(&softcall_lock);
return (0);
}
/*
* We first set the bit in cpuset and then poke.
*/
CPUSET_XOR(*softcall_cpuset, poke);
mutex_exit(&softcall_lock);
/*
* If softcall() was called at low pil then we may
* get preempted before we raise PIL. It should be okay
* because we are just going to poke CPUs now or at most
* another thread may start choosing CPUs in this routine.
*/
s = splhigh();
siron_poke_cpu(poke);
splx(s);
return (1);
}
/*
* Gets called when softcall queue is not moving forward. We choose
* a CPU and poke except the ones which are already poked.
*/
static int
softcall_choose_cpu()
{
cpu_t *cplist = CPU;
cpu_t *cp;
int intr_load = INT_MAX;
int cpuid = -1;
cpuset_t poke;
int s;
ASSERT(getpil() >= DISP_LEVEL);
ASSERT(ncpus > 1);
ASSERT(MUTEX_HELD(&softcall_lock));
CPUSET_ZERO(poke);
/*
* The hint is to start from current CPU.
*/
cp = cplist;
do {
/*
* Don't select this CPU if :
* - in cpuset already
* - CPU is not accepting interrupts
* - CPU is being offlined
*/
if (CPU_IN_SET(*softcall_cpuset, cp->cpu_id) ||
(cp->cpu_flags & CPU_ENABLE) == 0 ||
(cp == cpu_inmotion))
continue;
#if defined(__x86)
/*
* Don't select this CPU if a hypervisor indicates it
* isn't currently scheduled onto a physical cpu. We are
* looking for a cpu that can respond quickly and the time
* to get the virtual cpu scheduled and switched to running
* state is likely to be relatively lengthy.
*/
if (vcpu_on_pcpu(cp->cpu_id) == VCPU_NOT_ON_PCPU)
continue;
#endif /* __x86 */
/* if CPU is not busy */
if (cp->cpu_intrload == 0) {
cpuid = cp->cpu_id;
break;
}
if (cp->cpu_intrload < intr_load) {
cpuid = cp->cpu_id;
intr_load = cp->cpu_intrload;
} else if (cp->cpu_intrload == intr_load) {
/*
* We want to poke CPUs having similar
* load because we don't know which CPU is
* can acknowledge level1 interrupt. The
* list of such CPUs should not be large.
*/
if (cpuid != -1) {
/*
* Put the last CPU chosen because
* it also has same interrupt load.
*/
CPUSET_ADD(poke, cpuid);
cpuid = -1;
}
CPUSET_ADD(poke, cp->cpu_id);
}
} while ((cp = cp->cpu_next_onln) != cplist);
/* if we found a CPU which suits best to poke */
if (cpuid != -1) {
CPUSET_ZERO(poke);
CPUSET_ADD(poke, cpuid);
}
if (CPUSET_ISNULL(poke)) {
mutex_exit(&softcall_lock);
return (0);
}
/*
* We first set the bit in cpuset and then poke.
*/
CPUSET_XOR(*softcall_cpuset, poke);
mutex_exit(&softcall_lock);
/*
* If softcall() was called at low pil then we may
* get preempted before we raise PIL. It should be okay
* because we are just going to poke CPUs now or at most
* another thread may start choosing CPUs in this routine.
*/
s = splhigh();
siron_poke_cpu(poke);
splx(s);
return (1);
}
/*
* launch slave cpus into kernel text, pause them,
* and restore the original prom pages
*/
void
i_cpr_mp_setup(void)
{
extern void restart_other_cpu(int);
cpu_t *cp;
uint64_t kctx = kcontextreg;
/*
* Do not allow setting page size codes in MMU primary context
* register while using cif wrapper. This is needed to work
* around OBP incorrect handling of this MMU register.
*/
kcontextreg = 0;
/*
* reset cpu_ready_set so x_calls work properly
*/
CPUSET_ZERO(cpu_ready_set);
CPUSET_ADD(cpu_ready_set, getprocessorid());
/*
* setup cif to use the cookie from the new/tmp prom
* and setup tmp handling for calling prom services.
*/
i_cpr_cif_setup(CIF_SPLICE);
/*
* at this point, only the nucleus and a few cpr pages are
* mapped in. once we switch to the kernel trap table,
* we can access the rest of kernel space.
*/
prom_set_traptable(&trap_table);
if (ncpus > 1) {
sfmmu_init_tsbs();
mutex_enter(&cpu_lock);
/*
* All of the slave cpus are not ready at this time,
* yet the cpu structures have various cpu_flags set;
* clear cpu_flags and mutex_ready.
* Since we are coming up from a CPU suspend, the slave cpus
* are frozen.
*/
for (cp = CPU->cpu_next; cp != CPU; cp = cp->cpu_next) {
cp->cpu_flags = CPU_FROZEN;
cp->cpu_m.mutex_ready = 0;
}
for (cp = CPU->cpu_next; cp != CPU; cp = cp->cpu_next)
restart_other_cpu(cp->cpu_id);
pause_cpus(NULL, NULL);
mutex_exit(&cpu_lock);
i_cpr_xcall(i_cpr_clear_entries);
} else
i_cpr_clear_entries(0, 0);
/*
* now unlink the cif wrapper; WARNING: do not call any
* prom_xxx() routines until after prom pages are restored.
*/
i_cpr_cif_setup(CIF_UNLINK);
(void) i_cpr_prom_pages(CPR_PROM_RESTORE);
/* allow setting page size codes in MMU primary context register */
kcontextreg = kctx;
}
