/*
* Start secondary processors in motion.
*/
void
cpu_boot_secondary_processors()
{
int i, pstate;
struct cpu_info *ci;
sparc64_ipi_init();
for (ci = cpus; ci != NULL; ci = ci->ci_next) {
if (ci->ci_cpuid == CPU_UPAID)
continue;
cpu_pmap_prepare(ci, false);
cpu_args->cb_node = ci->ci_node;
cpu_args->cb_cpuinfo = ci->ci_paddr;
membar_sync();
/* Disable interrupts and start another CPU. */
pstate = getpstate();
setpstate(PSTATE_KERN);
prom_startcpu(ci->ci_node, (void *)cpu_spinup_trampoline, 0);
for (i = 0; i < 2000; i++) {
membar_sync();
if (CPUSET_HAS(cpus_active, ci->ci_index))
break;
delay(10000);
}
setpstate(pstate);
if (!CPUSET_HAS(cpus_active, ci->ci_index))
printf("cpu%d: startup failed\n", ci->ci_cpuid);
}
}
/* ARGSUSED */
void
pci_bus_exit(dev_info_t *dip, ddi_acc_handle_t handle)
{
pci_t *pci_p = get_pci_soft_state(ddi_get_instance(dip));
pbm_t *pbm_p = pci_p->pci_pbm_p;
ddi_fm_error_t derr;
ASSERT(MUTEX_HELD(&pbm_p->pbm_pokefault_mutex));
membar_sync();
mutex_enter(&pci_p->pci_common_p->pci_fm_mutex);
ddi_fm_acc_err_get(pbm_p->pbm_excl_handle, &derr, DDI_FME_VERSION);
if (derr.fme_status == DDI_FM_OK) {
if (pci_check_error(pci_p) != 0) {
(void) pci_pbm_err_handler(pci_p->pci_dip, &derr,
(const void *)pci_p, PCI_BUS_EXIT_CALL);
}
}
mutex_exit(&pci_p->pci_common_p->pci_fm_mutex);
pbm_p->pbm_excl_handle = NULL;
mutex_exit(&pbm_p->pbm_pokefault_mutex);
}
void
bus_dmamap_sync(bus_dma_tag_t t, bus_dmamap_t map,
bus_addr_t offset, bus_size_t len, int ops)
{
/* XXX: this might need some MD tweaks */
membar_sync();
}
/*
* Check condition (fipe_gbl_ctrl.cpu_cnt == ncpus) to make sure that
* there is other CPU trying to wake up system from memory power saving state.
* If a CPU is waking up system, fipe_disable() will set
* fipe_gbl_ctrl.pm_active to false as soon as possible and allow other CPU's
* to continue, and it will take the responsibility to recover system from
* memory power saving state.
*/
static void
fipe_enable(int throttle, cpu_idle_check_wakeup_t check_func, void* check_arg)
{
extern void membar_sync(void);
FIPE_KSTAT_DETAIL_INC(pm_tryenter_cnt);
/*
* Check CPU wakeup events.
*/
if (check_func != NULL) {
(*check_func)(check_arg);
}
/*
* Try to acquire mutex, which also implicitly has the same effect
* of calling membar_sync().
* If mutex_tryenter fails, that means other CPU is waking up.
*/
if (mutex_tryenter(&fipe_gbl_ctrl.lock) == 0) {
FIPE_KSTAT_DETAIL_INC(pm_race_cnt);
/*
* Handle a special race condition for the case that a CPU wakes
* and then enters into idle state within a short period.
* This case can't be reliably detected by cpu_count mechanism.
*/
} else if (fipe_gbl_ctrl.pm_active) {
FIPE_KSTAT_DETAIL_INC(pm_race_cnt);
mutex_exit(&fipe_gbl_ctrl.lock);
} else {
fipe_gbl_ctrl.pm_active = B_TRUE;
membar_sync();
if (fipe_gbl_ctrl.cpu_count != ncpus) {
FIPE_KSTAT_DETAIL_INC(pm_race_cnt);
fipe_gbl_ctrl.pm_active = B_FALSE;
} else if (fipe_ioat_trigger() != 0) {
fipe_gbl_ctrl.pm_active = B_FALSE;
} else if (fipe_gbl_ctrl.cpu_count != ncpus ||
fipe_mc_change(throttle) != 0) {
fipe_gbl_ctrl.pm_active = B_FALSE;
fipe_ioat_cancel();
if (fipe_gbl_ctrl.cpu_count != ncpus) {
FIPE_KSTAT_DETAIL_INC(pm_race_cnt);
}
} else if (fipe_gbl_ctrl.cpu_count != ncpus) {
fipe_gbl_ctrl.pm_active = B_FALSE;
fipe_mc_restore();
fipe_ioat_cancel();
FIPE_KSTAT_DETAIL_INC(pm_race_cnt);
} else {
FIPE_KSTAT_DETAIL_INC(pm_success_cnt);
}
mutex_exit(&fipe_gbl_ctrl.lock);
}
}
/*
* Lock accesses to the pci bus, to be able to protect against bus errors.
*/
void
pci_bus_enter(dev_info_t *dip, ddi_acc_handle_t handle)
{
pci_t *pci_p = get_pci_soft_state(ddi_get_instance(dip));
pbm_t *pbm_p = pci_p->pci_pbm_p;
membar_sync();
mutex_enter(&pbm_p->pbm_pokefault_mutex);
pbm_p->pbm_excl_handle = handle;
}
static void
pci_axq_hack_put64(ddi_acc_impl_t *handle, uint64_t *addr, uint64_t data)
{
pbm_t *pbm_p = (pbm_t *)handle->ahi_common.ah_bus_private;
uint32_t spl;
spl = ddi_enter_critical();
PIO_LIMIT_ENTER(pbm_p);
i_ddi_swap_put64(handle, addr, data);
membar_sync();
PIO_LIMIT_EXIT(pbm_p);
ddi_exit_critical(spl);
}
int
hppa_ipi_send(struct cpu_info *ci, u_long ipi)
{
struct iomod *cpu;
KASSERT(ci->ci_flags & CPUF_RUNNING);
atomic_or_ulong(&ci->ci_ipi, (1L << ipi));
/* Send an IPI to the specified CPU by triggering EIR{1} (irq 30). */
cpu = (struct iomod *)(ci->ci_hpa);
cpu->io_eir = 1;
membar_sync();
return 0;
}
static uint_t
pcmu_pbm_error_intr(caddr_t a)
{
pcmu_t *pcmu_p = (pcmu_t *)a;
pcmu_pbm_t *pcbm_p = pcmu_p->pcmu_pcbm_p;
ddi_fm_error_t derr;
int err = DDI_FM_OK;
on_trap_data_t *otp = pcbm_p->pcbm_ontrap_data;
bzero(&derr, sizeof (ddi_fm_error_t));
derr.fme_version = DDI_FME_VERSION;
mutex_enter(&pcmu_p->pcmu_err_mutex);
if ((otp != NULL) && (otp->ot_prot & OT_DATA_ACCESS)) {
/*
* ddi_poke protection, check nexus and children for
* expected errors.
*/
otp->ot_trap |= OT_DATA_ACCESS;
membar_sync();
derr.fme_flag = DDI_FM_ERR_POKE;
err = pcmu_pbm_err_handler(pcmu_p->pcmu_dip, &derr,
(void *)pcmu_p, PCI_INTR_CALL);
} else if (pcmu_check_error(pcmu_p) != 0) {
/*
* unprotected error, check for all errors.
*/
if (pcmu_errtrig_pa) {
(void) ldphysio(pcmu_errtrig_pa);
}
derr.fme_flag = DDI_FM_ERR_UNEXPECTED;
err = pcmu_pbm_err_handler(pcmu_p->pcmu_dip, &derr,
(void *)pcmu_p, PCI_INTR_CALL);
}
if (err == DDI_FM_FATAL) {
if (pcmu_panic_on_fatal_errors) {
mutex_exit(&pcmu_p->pcmu_err_mutex);
cmn_err(CE_PANIC, "%s-%d: Fatal PCI bus error(s)\n",
ddi_driver_name(pcmu_p->pcmu_dip),
ddi_get_instance(pcmu_p->pcmu_dip));
}
}
mutex_exit(&pcmu_p->pcmu_err_mutex);
pcmu_ib_nintr_clear(pcmu_p->pcmu_ib_p, pcmu_p->pcmu_inos[CBNINTR_PBM]);
return (DDI_INTR_CLAIMED);
}
void
cpu_hatch()
{
char *v = (char*)CPUINFO_VA;
int i;
for (i = 0; i < 4*PAGE_SIZE; i += sizeof(long))
flush(v + i);
cpu_pmap_init(curcpu());
CPUSET_ADD(cpus_active, cpu_number());
cpu_reset_fpustate();
curlwp = curcpu()->ci_data.cpu_idlelwp;
membar_sync();
tickintr_establish(PIL_CLOCK, tickintr);
spl0();
}
/*
* Allocate an IDT vector slot within the given range.
* cpu_lock will be held unless single threaded during early boot.
*/
int
idt_vec_alloc(int low, int high)
{
int vec;
KASSERT(mutex_owned(&cpu_lock) || !mp_online);
for (vec = low; vec <= high; vec++) {
if (idt_allocmap[vec] == 0) {
/* idt_vec_free() can be unlocked, so membar. */
membar_sync();
idt_allocmap[vec] = 1;
return vec;
}
}
return 0;
}
static void
pci_axq_hack_rep_put64(ddi_acc_impl_t *handle, uint64_t *host_addr,
uint64_t *dev_addr, size_t repcount, uint_t flags)
{
pbm_t *pbm_p = (pbm_t *)handle->ahi_common.ah_bus_private;
uint32_t spl;
spl = ddi_enter_critical();
PIO_LIMIT_ENTER(pbm_p);
while (repcount--) {
i_ddi_put64(handle, dev_addr, *host_addr);
membar_sync();
if (flags == DDI_DEV_AUTOINCR)
dev_addr++;
host_addr++;
}
PIO_LIMIT_EXIT(pbm_p);
ddi_exit_critical(spl);
}
/*
* Lowest-level serial I/O chip register read/write
*/
static void
sio_put_reg(struct rmc_comm_state *rcs, uint_t reg, uint8_t val)
{
DPRINTF(rcs, DSER, (CE_CONT, "REG[%d]<-$%02x", reg, val));
if (rcs->sd_state.sio_handle != NULL && !rcs->sd_state.sio_fault) {
/*
* The chip is mapped as "I/O" (e.g. with the side-effect
* bit on SPARC), therefore accesses are required to be
* in-order, with no value cacheing. However, there can
* still be write-behind buffering, so it is not guaranteed
* that a write actually reaches the chip in a given time.
*
* To force the access right through to the chip, we follow
* the write with another write (to the SCRATCH register)
* and a read (of the value just written to the SCRATCH
* register). The SCRATCH register is specifically provided
* for temporary data and has no effect on the SIO's own
* operation, making it ideal as a synchronising mechanism.
*
* If we didn't do this, it would be possible that the new
* value wouldn't reach the chip (and have the *intended*
* side-effects, such as disabling interrupts), for such a
* long time that the processor could execute a *lot* of
* instructions - including exiting the interrupt service
* routine and re-enabling interrupts. This effect was
* observed to lead to spurious (unclaimed) interrupts in
* some circumstances.
*
* This will no longer be needed once "synchronous" access
* handles are available (see PSARC/2000/269 and 2000/531).
*/
ddi_put8(rcs->sd_state.sio_handle,
rcs->sd_state.sio_regs + reg, val);
ddi_put8(rcs->sd_state.sio_handle,
rcs->sd_state.sio_regs + SIO_SCR, val);
membar_sync();
(void) ddi_get8(rcs->sd_state.sio_handle,
rcs->sd_state.sio_regs + SIO_SCR);
}
}
/*
* npf_config_load: the main routine performing configuration load.
* Performs the necessary synchronisation and destroys the old config.
*/
void
npf_config_load(npf_ruleset_t *rset, npf_tableset_t *tset,
npf_ruleset_t *nset, npf_rprocset_t *rpset,
npf_conndb_t *conns, bool flush)
{
const bool load = conns != NULL;
npf_config_t *nc, *onc;
nc = kmem_zalloc(sizeof(npf_config_t), KM_SLEEP);
nc->n_rules = rset;
nc->n_tables = tset;
nc->n_nat_rules = nset;
nc->n_rprocs = rpset;
nc->n_default_pass = flush;
/*
* Acquire the lock and perform the first phase:
* - Scan and use existing dynamic tables, reload only static.
* - Scan and use matching NAT policies to preserve the connections.
*/
mutex_enter(&npf_config_lock);
if ((onc = npf_config) != NULL) {
npf_ruleset_reload(rset, onc->n_rules, load);
npf_tableset_reload(tset, onc->n_tables);
npf_ruleset_reload(nset, onc->n_nat_rules, load);
}
/*
* Set the new config and release the lock.
*/
membar_sync();
npf_config = nc;
if (onc == NULL) {
/* Initial load, done. */
npf_ifmap_flush();
npf_conn_load(conns, !flush);
mutex_exit(&npf_config_lock);
return;
}
/*
* If we are going to flush the connections or load the new ones,
* then disable the connection tracking for the grace period.
*/
if (flush || conns) {
npf_conn_tracking(false);
}
/* Synchronise: drain all references. */
pserialize_perform(npf_config_psz);
if (flush) {
npf_ifmap_flush();
}
/*
* G/C the existing connections and, if passed, load the new ones.
* If not flushing - enable the connection tracking.
*/
npf_conn_load(conns, !flush);
mutex_exit(&npf_config_lock);
/* Finally, it is safe to destroy the old config. */
npf_config_destroy(onc);
}
/*ARGSUSED*/
static int
clock_tick_cpu_setup(cpu_setup_t what, int cid, void *arg)
{
cpu_t *cp, *ncp;
int i, set;
clock_tick_set_t *csp;
/*
* This function performs some computations at CPU offline/online
* time. The computed values are used during tick scheduling and
* execution phases. This avoids having to compute things on
* an every tick basis. The other benefit is that we perform the
* computations only for onlined CPUs (not offlined ones). As a
* result, no tick processing is attempted for offlined CPUs.
*
* Also, cpu_offline() calls this function before checking for
* active interrupt threads. This allows us to avoid posting
* cross calls to CPUs that are being offlined.
*/
cp = cpu[cid];
mutex_enter(&clock_tick_lock);
switch (what) {
case CPU_ON:
clock_tick_cpus[clock_tick_total_cpus] = cp;
set = clock_tick_total_cpus / clock_tick_ncpus;
csp = &clock_tick_set[set];
csp->ct_end++;
clock_tick_total_cpus++;
clock_tick_nsets =
(clock_tick_total_cpus + clock_tick_ncpus - 1) /
clock_tick_ncpus;
CPUSET_ADD(clock_tick_online_cpuset, cp->cpu_id);
membar_sync();
break;
case CPU_OFF:
if (&sync_softint != NULL)
sync_softint(clock_tick_online_cpuset);
CPUSET_DEL(clock_tick_online_cpuset, cp->cpu_id);
clock_tick_total_cpus--;
clock_tick_cpus[clock_tick_total_cpus] = NULL;
clock_tick_nsets =
(clock_tick_total_cpus + clock_tick_ncpus - 1) /
clock_tick_ncpus;
set = clock_tick_total_cpus / clock_tick_ncpus;
csp = &clock_tick_set[set];
csp->ct_end--;
i = 0;
ncp = cpu_active;
do {
if (cp == ncp)
continue;
clock_tick_cpus[i] = ncp;
i++;
} while ((ncp = ncp->cpu_next_onln) != cpu_active);
ASSERT(i == clock_tick_total_cpus);
membar_sync();
break;
default:
break;
}
mutex_exit(&clock_tick_lock);
return (0);
}
/*ARGSUSED*/
int
suspend_start(char *error_reason, size_t max_reason_len)
{
uint64_t source_tick;
uint64_t source_stick;
uint64_t rv;
timestruc_t source_tod;
int spl;
ASSERT(suspend_supported());
DBG("suspend: %s", __func__);
sfmmu_ctxdoms_lock();
mutex_enter(&cpu_lock);
/* Suspend the watchdog */
watchdog_suspend();
/* Record the TOD */
mutex_enter(&tod_lock);
source_tod = tod_get();
mutex_exit(&tod_lock);
/* Pause all other CPUs */
pause_cpus(NULL);
DBG_PROM("suspend: CPUs paused\n");
/* Suspend cyclics */
cyclic_suspend();
DBG_PROM("suspend: cyclics suspended\n");
/* Disable interrupts */
spl = spl8();
DBG_PROM("suspend: spl8()\n");
source_tick = gettick_counter();
source_stick = gettick();
DBG_PROM("suspend: source_tick: 0x%lx\n", source_tick);
DBG_PROM("suspend: source_stick: 0x%lx\n", source_stick);
/*
* Call into the HV to initiate the suspend. hv_guest_suspend()
* returns after the guest has been resumed or if the suspend
* operation failed or was cancelled. After a successful suspend,
* the %tick and %stick registers may have changed by an amount
* that is not proportional to the amount of time that has passed.
* They may have jumped forwards or backwards. Some variation is
* allowed and accounted for using suspend_tick_stick_max_delta,
* but otherwise this jump must be uniform across all CPUs and we
* operate under the assumption that it is (maintaining two global
* offset variables--one for %tick and one for %stick.)
*/
DBG_PROM("suspend: suspending... \n");
rv = hv_guest_suspend();
if (rv != 0) {
splx(spl);
cyclic_resume();
start_cpus();
watchdog_resume();
mutex_exit(&cpu_lock);
sfmmu_ctxdoms_unlock();
DBG("suspend: failed, rv: %ld\n", rv);
return (rv);
}
suspend_count++;
/* Update the global tick and stick offsets and the preserved TOD */
set_tick_offsets(source_tick, source_stick, &source_tod);
/* Ensure new offsets are globally visible before resuming CPUs */
membar_sync();
/* Enable interrupts */
splx(spl);
/* Set the {%tick,%stick}.NPT bits on all CPUs */
if (enable_user_tick_stick_emulation) {
xc_all((xcfunc_t *)enable_tick_stick_npt, NULL, NULL);
xt_sync(cpu_ready_set);
ASSERT(gettick_npt() != 0);
ASSERT(getstick_npt() != 0);
}
/* If emulation is enabled, but not currently active, enable it */
if (enable_user_tick_stick_emulation && !tick_stick_emulation_active) {
tick_stick_emulation_active = B_TRUE;
}
sfmmu_ctxdoms_remove();
/* Resume cyclics, unpause CPUs */
cyclic_resume();
start_cpus();
/* Set the TOD */
mutex_enter(&tod_lock);
tod_set(source_tod);
mutex_exit(&tod_lock);
/* Re-enable the watchdog */
watchdog_resume();
mutex_exit(&cpu_lock);
/* Download the latest MD */
if ((rv = mach_descrip_update()) != 0)
cmn_err(CE_PANIC, "suspend: mach_descrip_update failed: %ld",
rv);
sfmmu_ctxdoms_update();
sfmmu_ctxdoms_unlock();
/* Get new MD, update CPU mappings/relationships */
if (suspend_update_cpu_mappings)
update_cpu_mappings();
DBG("suspend: target tick: 0x%lx", gettick_counter());
DBG("suspend: target stick: 0x%llx", gettick());
DBG("suspend: user %%tick/%%stick emulation is %d",
tick_stick_emulation_active);
DBG("suspend: finished");
return (0);
}
