blob: 4ceaae891c7b8fed7ae3f0ec6a1b27f50d6cf878 [file] [log] [blame]
/*
* Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <stddef.h>
#include <string.h>
#include <bl31/bl31.h>
#include <bl31/ehf.h>
#include <bl31/interrupt_mgmt.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <common/runtime_svc.h>
#include <context.h>
#include <lib/cassert.h>
#include <lib/el3_runtime/pubsub.h>
#include <lib/utils.h>
#include <plat/common/platform.h>
#include <services/sdei.h>
#include "sdei_private.h"
#define MAJOR_VERSION 1ULL
#define MINOR_VERSION 0ULL
#define VENDOR_VERSION 0ULL
#define MAKE_SDEI_VERSION(_major, _minor, _vendor) \
((((_major)) << 48ULL) | (((_minor)) << 32ULL) | (_vendor))
#define LOWEST_INTR_PRIORITY 0xff
#define is_valid_affinity(_mpidr) (plat_core_pos_by_mpidr(_mpidr) >= 0)
CASSERT(PLAT_SDEI_CRITICAL_PRI < PLAT_SDEI_NORMAL_PRI,
sdei_critical_must_have_higher_priority);
static unsigned int num_dyn_priv_slots, num_dyn_shrd_slots;
/* Initialise SDEI map entries */
static void init_map(sdei_ev_map_t *map)
{
map->reg_count = 0;
}
/* Convert mapping to SDEI class */
static sdei_class_t map_to_class(sdei_ev_map_t *map)
{
return is_event_critical(map) ? SDEI_CRITICAL : SDEI_NORMAL;
}
/* Clear SDEI event entries except state */
static void clear_event_entries(sdei_entry_t *se)
{
se->ep = 0;
se->arg = 0;
se->affinity = 0;
se->reg_flags = 0;
}
/* Perform CPU-specific state initialisation */
static void *sdei_cpu_on_init(const void *arg)
{
unsigned int i;
sdei_ev_map_t *map;
sdei_entry_t *se;
/* Initialize private mappings on this CPU */
for_each_private_map(i, map) {
se = get_event_entry(map);
clear_event_entries(se);
se->state = 0;
}
SDEI_LOG("Private events initialized on %lx\n", read_mpidr_el1());
/* All PEs start with SDEI events masked */
(void) sdei_pe_mask();
return NULL;
}
/* CPU initialisation after wakeup from suspend */
static void *sdei_cpu_wakeup_init(const void *arg)
{
SDEI_LOG("Events masked on %lx\n", read_mpidr_el1());
/* All PEs wake up with SDEI events masked */
sdei_pe_mask();
return 0;
}
/* Initialise an SDEI class */
static void sdei_class_init(sdei_class_t class)
{
unsigned int i;
bool zero_found __unused = false;
int ev_num_so_far __unused;
sdei_ev_map_t *map;
/* Sanity check and configuration of shared events */
ev_num_so_far = -1;
for_each_shared_map(i, map) {
#if ENABLE_ASSERTIONS
/* Ensure mappings are sorted */
assert((ev_num_so_far < 0) || (map->ev_num > ev_num_so_far));
ev_num_so_far = map->ev_num;
/* Event 0 must not be shared */
assert(map->ev_num != SDEI_EVENT_0);
/* Check for valid event */
assert(map->ev_num >= 0);
/* Make sure it's a shared event */
assert(is_event_shared(map));
/* No shared mapping should have signalable property */
assert(!is_event_signalable(map));
/* Shared mappings can't be explicit */
assert(!is_map_explicit(map));
#endif
/* Skip initializing the wrong priority */
if (map_to_class(map) != class)
continue;
/* Platform events are always bound, so set the bound flag */
if (is_map_dynamic(map)) {
assert(map->intr == SDEI_DYN_IRQ);
assert(is_event_normal(map));
num_dyn_shrd_slots++;
} else {
/* Shared mappings must be bound to shared interrupt */
assert(plat_ic_is_spi(map->intr) != 0);
set_map_bound(map);
}
init_map(map);
}
/* Sanity check and configuration of private events for this CPU */
ev_num_so_far = -1;
for_each_private_map(i, map) {
#if ENABLE_ASSERTIONS
/* Ensure mappings are sorted */
assert((ev_num_so_far < 0) || (map->ev_num > ev_num_so_far));
ev_num_so_far = map->ev_num;
if (map->ev_num == SDEI_EVENT_0) {
zero_found = true;
/* Event 0 must be a Secure SGI */
assert(is_secure_sgi(map->intr));
/*
* Event 0 can have only have signalable flag (apart
* from being private
*/
assert(map->map_flags == (SDEI_MAPF_SIGNALABLE |
SDEI_MAPF_PRIVATE));
} else {
/* No other mapping should have signalable property */
assert(!is_event_signalable(map));
}
/* Check for valid event */
assert(map->ev_num >= 0);
/* Make sure it's a private event */
assert(is_event_private(map));
/*
* Other than priority, explicit events can only have explicit
* and private flags set.
*/
if (is_map_explicit(map)) {
assert((map->map_flags | SDEI_MAPF_CRITICAL) ==
(SDEI_MAPF_EXPLICIT | SDEI_MAPF_PRIVATE
| SDEI_MAPF_CRITICAL));
}
#endif
/* Skip initializing the wrong priority */
if (map_to_class(map) != class)
continue;
/* Platform events are always bound, so set the bound flag */
if (map->ev_num != SDEI_EVENT_0) {
if (is_map_dynamic(map)) {
assert(map->intr == SDEI_DYN_IRQ);
assert(is_event_normal(map));
num_dyn_priv_slots++;
} else if (is_map_explicit(map)) {
/*
* Explicit mappings don't have a backing
* SDEI interrupt, but verify that anyway.
*/
assert(map->intr == SDEI_DYN_IRQ);
} else {
/*
* Private mappings must be bound to private
* interrupt.
*/
assert(plat_ic_is_ppi((unsigned) map->intr) != 0);
set_map_bound(map);
}
}
init_map(map);
}
/* Ensure event 0 is in the mapping */
assert(zero_found);
(void) sdei_cpu_on_init(NULL);
}
/* SDEI dispatcher initialisation */
void sdei_init(void)
{
plat_sdei_setup();
sdei_class_init(SDEI_CRITICAL);
sdei_class_init(SDEI_NORMAL);
/* Register priority level handlers */
ehf_register_priority_handler(PLAT_SDEI_CRITICAL_PRI,
sdei_intr_handler);
ehf_register_priority_handler(PLAT_SDEI_NORMAL_PRI,
sdei_intr_handler);
}
/* Populate SDEI event entry */
static void set_sdei_entry(sdei_entry_t *se, uint64_t ep, uint64_t arg,
unsigned int flags, uint64_t affinity)
{
assert(se != NULL);
se->ep = ep;
se->arg = arg;
se->affinity = (affinity & MPIDR_AFFINITY_MASK);
se->reg_flags = flags;
}
static uint64_t sdei_version(void)
{
return MAKE_SDEI_VERSION(MAJOR_VERSION, MINOR_VERSION, VENDOR_VERSION);
}
/* Validate flags and MPIDR values for REGISTER and ROUTING_SET calls */
static int validate_flags(uint64_t flags, uint64_t mpidr)
{
/* Validate flags */
switch (flags) {
case SDEI_REGF_RM_PE:
if (!is_valid_affinity(mpidr))
return SDEI_EINVAL;
break;
case SDEI_REGF_RM_ANY:
break;
default:
/* Unknown flags */
return SDEI_EINVAL;
}
return 0;
}
/* Set routing of an SDEI event */
static int sdei_event_routing_set(int ev_num, uint64_t flags, uint64_t mpidr)
{
int ret;
unsigned int routing;
sdei_ev_map_t *map;
sdei_entry_t *se;
ret = validate_flags(flags, mpidr);
if (ret != 0)
return ret;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
/* The event must not be private */
if (is_event_private(map))
return SDEI_EINVAL;
se = get_event_entry(map);
sdei_map_lock(map);
if (!is_map_bound(map) || is_event_private(map)) {
ret = SDEI_EINVAL;
goto finish;
}
if (!can_sdei_state_trans(se, DO_ROUTING)) {
ret = SDEI_EDENY;
goto finish;
}
/* Choose appropriate routing */
routing = (unsigned int) ((flags == SDEI_REGF_RM_ANY) ?
INTR_ROUTING_MODE_ANY : INTR_ROUTING_MODE_PE);
/* Update event registration flag */
se->reg_flags = (unsigned int) flags;
if (flags == SDEI_REGF_RM_PE) {
se->affinity = (mpidr & MPIDR_AFFINITY_MASK);
}
/*
* ROUTING_SET is permissible only when event composite state is
* 'registered, disabled, and not running'. This means that the
* interrupt is currently disabled, and not active.
*/
plat_ic_set_spi_routing(map->intr, routing, (u_register_t) mpidr);
finish:
sdei_map_unlock(map);
return ret;
}
/* Register handler and argument for an SDEI event */
static int64_t sdei_event_register(int ev_num,
uint64_t ep,
uint64_t arg,
uint64_t flags,
uint64_t mpidr)
{
int ret;
unsigned int routing;
sdei_entry_t *se;
sdei_ev_map_t *map;
sdei_state_t backup_state;
if ((ep == 0U) || (plat_sdei_validate_entry_point(
ep, sdei_client_el()) != 0)) {
return SDEI_EINVAL;
}
ret = validate_flags(flags, mpidr);
if (ret != 0)
return ret;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
/* Private events always target the PE */
if (is_event_private(map))
flags = SDEI_REGF_RM_PE;
se = get_event_entry(map);
/*
* Even though register operation is per-event (additionally for private
* events, registration is required individually), it has to be
* serialised with respect to bind/release, which are global operations.
* So we hold the lock throughout, unconditionally.
*/
sdei_map_lock(map);
backup_state = se->state;
if (!can_sdei_state_trans(se, DO_REGISTER))
goto fallback;
/*
* When registering for dynamic events, make sure it's been bound
* already. This has to be the case as, without binding, the client
* can't know about the event number to register for.
*/
if (is_map_dynamic(map) && !is_map_bound(map))
goto fallback;
if (is_event_private(map)) {
/* Multiple calls to register are possible for private events */
assert(map->reg_count >= 0);
} else {
/* Only single call to register is possible for shared events */
assert(map->reg_count == 0);
}
if (is_map_bound(map)) {
/* Meanwhile, did any PE ACK the interrupt? */
if (plat_ic_get_interrupt_active(map->intr) != 0U)
goto fallback;
/* The interrupt must currently owned by Non-secure */
if (plat_ic_get_interrupt_type(map->intr) != INTR_TYPE_NS)
goto fallback;
/*
* Disable forwarding of new interrupt triggers to CPU
* interface.
*/
plat_ic_disable_interrupt(map->intr);
/*
* Any events that are triggered after register and before
* enable should remain pending. Clear any previous interrupt
* triggers which are pending (except for SGIs). This has no
* affect on level-triggered interrupts.
*/
if (ev_num != SDEI_EVENT_0)
plat_ic_clear_interrupt_pending(map->intr);
/* Map interrupt to EL3 and program the correct priority */
plat_ic_set_interrupt_type(map->intr, INTR_TYPE_EL3);
/* Program the appropriate interrupt priority */
plat_ic_set_interrupt_priority(map->intr, sdei_event_priority(map));
/*
* Set the routing mode for shared event as requested. We
* already ensure that shared events get bound to SPIs.
*/
if (is_event_shared(map)) {
routing = (unsigned int) ((flags == SDEI_REGF_RM_ANY) ?
INTR_ROUTING_MODE_ANY : INTR_ROUTING_MODE_PE);
plat_ic_set_spi_routing(map->intr, routing,
(u_register_t) mpidr);
}
}
/* Populate event entries */
set_sdei_entry(se, ep, arg, (unsigned int) flags, mpidr);
/* Increment register count */
map->reg_count++;
sdei_map_unlock(map);
return 0;
fallback:
/* Reinstate previous state */
se->state = backup_state;
sdei_map_unlock(map);
return SDEI_EDENY;
}
/* Enable SDEI event */
static int64_t sdei_event_enable(int ev_num)
{
sdei_ev_map_t *map;
sdei_entry_t *se;
int ret;
bool before, after;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
se = get_event_entry(map);
ret = SDEI_EDENY;
if (is_event_shared(map))
sdei_map_lock(map);
before = GET_EV_STATE(se, ENABLED);
if (!can_sdei_state_trans(se, DO_ENABLE))
goto finish;
after = GET_EV_STATE(se, ENABLED);
/*
* Enable interrupt for bound events only if there's a change in enabled
* state.
*/
if (is_map_bound(map) && (!before && after))
plat_ic_enable_interrupt(map->intr);
ret = 0;
finish:
if (is_event_shared(map))
sdei_map_unlock(map);
return ret;
}
/* Disable SDEI event */
static int sdei_event_disable(int ev_num)
{
sdei_ev_map_t *map;
sdei_entry_t *se;
int ret;
bool before, after;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
se = get_event_entry(map);
ret = SDEI_EDENY;
if (is_event_shared(map))
sdei_map_lock(map);
before = GET_EV_STATE(se, ENABLED);
if (!can_sdei_state_trans(se, DO_DISABLE))
goto finish;
after = GET_EV_STATE(se, ENABLED);
/*
* Disable interrupt for bound events only if there's a change in
* enabled state.
*/
if (is_map_bound(map) && (before && !after))
plat_ic_disable_interrupt(map->intr);
ret = 0;
finish:
if (is_event_shared(map))
sdei_map_unlock(map);
return ret;
}
/* Query SDEI event information */
static int64_t sdei_event_get_info(int ev_num, int info)
{
sdei_entry_t *se;
sdei_ev_map_t *map;
uint64_t flags;
bool registered;
uint64_t affinity;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
se = get_event_entry(map);
if (is_event_shared(map))
sdei_map_lock(map);
/* Sample state under lock */
registered = GET_EV_STATE(se, REGISTERED);
flags = se->reg_flags;
affinity = se->affinity;
if (is_event_shared(map))
sdei_map_unlock(map);
switch (info) {
case SDEI_INFO_EV_TYPE:
return is_event_shared(map);
case SDEI_INFO_EV_NOT_SIGNALED:
return !is_event_signalable(map);
case SDEI_INFO_EV_PRIORITY:
return is_event_critical(map);
case SDEI_INFO_EV_ROUTING_MODE:
if (!is_event_shared(map))
return SDEI_EINVAL;
if (!registered)
return SDEI_EDENY;
return (flags == SDEI_REGF_RM_PE);
case SDEI_INFO_EV_ROUTING_AFF:
if (!is_event_shared(map))
return SDEI_EINVAL;
if (!registered)
return SDEI_EDENY;
if (flags != SDEI_REGF_RM_PE)
return SDEI_EINVAL;
return affinity;
default:
return SDEI_EINVAL;
}
}
/* Unregister an SDEI event */
static int sdei_event_unregister(int ev_num)
{
int ret = 0;
sdei_entry_t *se;
sdei_ev_map_t *map;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
se = get_event_entry(map);
/*
* Even though unregister operation is per-event (additionally for
* private events, unregistration is required individually), it has to
* be serialised with respect to bind/release, which are global
* operations. So we hold the lock throughout, unconditionally.
*/
sdei_map_lock(map);
if (!can_sdei_state_trans(se, DO_UNREGISTER)) {
/*
* Even if the call is invalid, and the handler is running (for
* example, having unregistered from a running handler earlier),
* return pending error code; otherwise, return deny.
*/
ret = GET_EV_STATE(se, RUNNING) ? SDEI_EPEND : SDEI_EDENY;
goto finish;
}
map->reg_count--;
if (is_event_private(map)) {
/* Multiple calls to register are possible for private events */
assert(map->reg_count >= 0);
} else {
/* Only single call to register is possible for shared events */
assert(map->reg_count == 0);
}
if (is_map_bound(map)) {
plat_ic_disable_interrupt(map->intr);
/*
* Clear pending interrupt. Skip for SGIs as they may not be
* cleared on interrupt controllers.
*/
if (ev_num != SDEI_EVENT_0)
plat_ic_clear_interrupt_pending(map->intr);
assert(plat_ic_get_interrupt_type(map->intr) == INTR_TYPE_EL3);
plat_ic_set_interrupt_type(map->intr, INTR_TYPE_NS);
plat_ic_set_interrupt_priority(map->intr, LOWEST_INTR_PRIORITY);
}
clear_event_entries(se);
/*
* If the handler is running at the time of unregister, return the
* pending error code.
*/
if (GET_EV_STATE(se, RUNNING))
ret = SDEI_EPEND;
finish:
sdei_map_unlock(map);
return ret;
}
/* Query status of an SDEI event */
static int sdei_event_status(int ev_num)
{
sdei_ev_map_t *map;
sdei_entry_t *se;
sdei_state_t state;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
se = get_event_entry(map);
if (is_event_shared(map))
sdei_map_lock(map);
/* State value directly maps to the expected return format */
state = se->state;
if (is_event_shared(map))
sdei_map_unlock(map);
return (int) state;
}
/* Bind an SDEI event to an interrupt */
static int sdei_interrupt_bind(unsigned int intr_num)
{
sdei_ev_map_t *map;
bool retry = true, shared_mapping;
/* SGIs are not allowed to be bound */
if (plat_ic_is_sgi(intr_num) != 0)
return SDEI_EINVAL;
shared_mapping = (plat_ic_is_spi(intr_num) != 0);
do {
/*
* Bail out if there is already an event for this interrupt,
* either platform-defined or dynamic.
*/
map = find_event_map_by_intr(intr_num, shared_mapping);
if (map != NULL) {
if (is_map_dynamic(map)) {
if (is_map_bound(map)) {
/*
* Dynamic event, already bound. Return
* event number.
*/
return map->ev_num;
}
} else {
/* Binding non-dynamic event */
return SDEI_EINVAL;
}
}
/*
* The interrupt is not bound yet. Try to find a free slot to
* bind it. Free dynamic mappings have their interrupt set as
* SDEI_DYN_IRQ.
*/
map = find_event_map_by_intr(SDEI_DYN_IRQ, shared_mapping);
if (map == NULL)
return SDEI_ENOMEM;
/* The returned mapping must be dynamic */
assert(is_map_dynamic(map));
/*
* We cannot assert for bound maps here, as we might be racing
* with another bind.
*/
/* The requested interrupt must already belong to NS */
if (plat_ic_get_interrupt_type(intr_num) != INTR_TYPE_NS)
return SDEI_EDENY;
/*
* Interrupt programming and ownership transfer are deferred
* until register.
*/
sdei_map_lock(map);
if (!is_map_bound(map)) {
map->intr = intr_num;
set_map_bound(map);
retry = false;
}
sdei_map_unlock(map);
} while (retry);
return map->ev_num;
}
/* Release a bound SDEI event previously to an interrupt */
static int sdei_interrupt_release(int ev_num)
{
int ret = 0;
sdei_ev_map_t *map;
sdei_entry_t *se;
/* Check if valid event number */
map = find_event_map(ev_num);
if (map == NULL)
return SDEI_EINVAL;
if (!is_map_dynamic(map))
return SDEI_EINVAL;
se = get_event_entry(map);
sdei_map_lock(map);
/* Event must have been unregistered before release */
if (map->reg_count != 0) {
ret = SDEI_EDENY;
goto finish;
}
/*
* Interrupt release never causes the state to change. We only check
* whether it's permissible or not.
*/
if (!can_sdei_state_trans(se, DO_RELEASE)) {
ret = SDEI_EDENY;
goto finish;
}
if (is_map_bound(map)) {
/*
* Deny release if the interrupt is active, which means it's
* probably being acknowledged and handled elsewhere.
*/
if (plat_ic_get_interrupt_active(map->intr) != 0U) {
ret = SDEI_EDENY;
goto finish;
}
/*
* Interrupt programming and ownership transfer are already done
* during unregister.
*/
map->intr = SDEI_DYN_IRQ;
clr_map_bound(map);
} else {
SDEI_LOG("Error release bound:%d cnt:%d\n", is_map_bound(map),
map->reg_count);
ret = SDEI_EINVAL;
}
finish:
sdei_map_unlock(map);
return ret;
}
/* Perform reset of private SDEI events */
static int sdei_private_reset(void)
{
sdei_ev_map_t *map;
int ret = 0, final_ret = 0;
unsigned int i;
/* Unregister all private events */
for_each_private_map(i, map) {
/*
* The unregister can fail if the event is not registered, which
* is allowed, and a deny will be returned. But if the event is
* running or unregister pending, the call fails.
*/
ret = sdei_event_unregister(map->ev_num);
if ((ret == SDEI_EPEND) && (final_ret == 0))
final_ret = SDEI_EDENY;
}
return final_ret;
}
/* Perform reset of shared SDEI events */
static int sdei_shared_reset(void)
{
const sdei_mapping_t *mapping;
sdei_ev_map_t *map;
int ret = 0, final_ret = 0;
unsigned int i, j;
/* Unregister all shared events */
for_each_shared_map(i, map) {
/*
* The unregister can fail if the event is not registered, which
* is allowed, and a deny will be returned. But if the event is
* running or unregister pending, the call fails.
*/
ret = sdei_event_unregister(map->ev_num);
if ((ret == SDEI_EPEND) && (final_ret == 0))
final_ret = SDEI_EDENY;
}
if (final_ret != 0)
return final_ret;
/*
* Loop through both private and shared mappings, and release all
* bindings.
*/
for_each_mapping_type(i, mapping) {
iterate_mapping(mapping, j, map) {
/*
* Release bindings for mappings that are dynamic and
* bound.
*/
if (is_map_dynamic(map) && is_map_bound(map)) {
/*
* Any failure to release would mean there is at
* least a PE registered for the event.
*/
ret = sdei_interrupt_release(map->ev_num);
if ((ret != 0) && (final_ret == 0))
final_ret = ret;
}
}
}
return final_ret;
}
/* Send a signal to another SDEI client PE */
static int sdei_signal(int ev_num, uint64_t target_pe)
{
sdei_ev_map_t *map;
/* Only event 0 can be signalled */
if (ev_num != SDEI_EVENT_0)
return SDEI_EINVAL;
/* Find mapping for event 0 */
map = find_event_map(SDEI_EVENT_0);
if (map == NULL)
return SDEI_EINVAL;
/* The event must be signalable */
if (!is_event_signalable(map))
return SDEI_EINVAL;
/* Validate target */
if (plat_core_pos_by_mpidr(target_pe) < 0)
return SDEI_EINVAL;
/* Raise SGI. Platform will validate target_pe */
plat_ic_raise_el3_sgi((int) map->intr, (u_register_t) target_pe);
return 0;
}
/* Query SDEI dispatcher features */
static uint64_t sdei_features(unsigned int feature)
{
if (feature == SDEI_FEATURE_BIND_SLOTS) {
return FEATURE_BIND_SLOTS(num_dyn_priv_slots,
num_dyn_shrd_slots);
}
return (uint64_t) SDEI_EINVAL;
}
/* SDEI top level handler for servicing SMCs */
uint64_t sdei_smc_handler(uint32_t smc_fid,
uint64_t x1,
uint64_t x2,
uint64_t x3,
uint64_t x4,
void *cookie,
void *handle,
uint64_t flags)
{
uint64_t x5;
unsigned int ss = (unsigned int) get_interrupt_src_ss(flags);
int64_t ret;
bool resume = false;
cpu_context_t *ctx = handle;
int ev_num = (int) x1;
if (ss != NON_SECURE)
SMC_RET1(ctx, SMC_UNK);
/* Verify the caller EL */
if (GET_EL(read_spsr_el3()) != sdei_client_el())
SMC_RET1(ctx, SMC_UNK);
switch (smc_fid) {
case SDEI_VERSION:
SDEI_LOG("> VER\n");
ret = (int64_t) sdei_version();
SDEI_LOG("< VER:%llx\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_REGISTER:
x5 = SMC_GET_GP(ctx, CTX_GPREG_X5);
SDEI_LOG("> REG(n:0x%x e:%llx a:%llx f:%x m:%llx)\n", ev_num,
x2, x3, (int) x4, x5);
ret = sdei_event_register(ev_num, x2, x3, x4, x5);
SDEI_LOG("< REG:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_ENABLE:
SDEI_LOG("> ENABLE(n:%d)\n", (int) x1);
ret = sdei_event_enable(ev_num);
SDEI_LOG("< ENABLE:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_DISABLE:
SDEI_LOG("> DISABLE(n:0x%x)\n", ev_num);
ret = sdei_event_disable(ev_num);
SDEI_LOG("< DISABLE:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_CONTEXT:
SDEI_LOG("> CTX(p:%d):%lx\n", (int) x1, read_mpidr_el1());
ret = sdei_event_context(ctx, (unsigned int) x1);
SDEI_LOG("< CTX:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_COMPLETE_AND_RESUME:
resume = true;
/* Fallthrough */
case SDEI_EVENT_COMPLETE:
SDEI_LOG("> COMPLETE(r:%u sta/ep:%llx):%lx\n",
(unsigned int) resume, x1, read_mpidr_el1());
ret = sdei_event_complete(resume, x1);
SDEI_LOG("< COMPLETE:%llx\n", ret);
/*
* Set error code only if the call failed. If the call
* succeeded, we discard the dispatched context, and restore the
* interrupted context to a pristine condition, and therefore
* shouldn't be modified. We don't return to the caller in this
* case anyway.
*/
if (ret != 0)
SMC_RET1(ctx, ret);
SMC_RET0(ctx);
case SDEI_EVENT_STATUS:
SDEI_LOG("> STAT(n:0x%x)\n", ev_num);
ret = sdei_event_status(ev_num);
SDEI_LOG("< STAT:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_GET_INFO:
SDEI_LOG("> INFO(n:0x%x, %d)\n", ev_num, (int) x2);
ret = sdei_event_get_info(ev_num, (int) x2);
SDEI_LOG("< INFO:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_UNREGISTER:
SDEI_LOG("> UNREG(n:0x%x)\n", ev_num);
ret = sdei_event_unregister(ev_num);
SDEI_LOG("< UNREG:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_PE_UNMASK:
SDEI_LOG("> UNMASK:%lx\n", read_mpidr_el1());
sdei_pe_unmask();
SDEI_LOG("< UNMASK:%d\n", 0);
SMC_RET1(ctx, 0);
case SDEI_PE_MASK:
SDEI_LOG("> MASK:%lx\n", read_mpidr_el1());
ret = sdei_pe_mask();
SDEI_LOG("< MASK:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_INTERRUPT_BIND:
SDEI_LOG("> BIND(%d)\n", (int) x1);
ret = sdei_interrupt_bind((unsigned int) x1);
SDEI_LOG("< BIND:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_INTERRUPT_RELEASE:
SDEI_LOG("> REL(0x%x)\n", ev_num);
ret = sdei_interrupt_release(ev_num);
SDEI_LOG("< REL:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_SHARED_RESET:
SDEI_LOG("> S_RESET():%lx\n", read_mpidr_el1());
ret = sdei_shared_reset();
SDEI_LOG("< S_RESET:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_PRIVATE_RESET:
SDEI_LOG("> P_RESET():%lx\n", read_mpidr_el1());
ret = sdei_private_reset();
SDEI_LOG("< P_RESET:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_ROUTING_SET:
SDEI_LOG("> ROUTE_SET(n:0x%x f:%llx aff:%llx)\n", ev_num, x2, x3);
ret = sdei_event_routing_set(ev_num, x2, x3);
SDEI_LOG("< ROUTE_SET:%lld\n", ret);
SMC_RET1(ctx, ret);
case SDEI_FEATURES:
SDEI_LOG("> FTRS(f:%llx)\n", x1);
ret = (int64_t) sdei_features((unsigned int) x1);
SDEI_LOG("< FTRS:%llx\n", ret);
SMC_RET1(ctx, ret);
case SDEI_EVENT_SIGNAL:
SDEI_LOG("> SIGNAL(e:0x%x t:%llx)\n", ev_num, x2);
ret = sdei_signal(ev_num, x2);
SDEI_LOG("< SIGNAL:%lld\n", ret);
SMC_RET1(ctx, ret);
default:
/* Do nothing in default case */
break;
}
WARN("Unimplemented SDEI Call: 0x%x\n", smc_fid);
SMC_RET1(ctx, SMC_UNK);
}
/* Subscribe to PSCI CPU on to initialize per-CPU SDEI configuration */
SUBSCRIBE_TO_EVENT(psci_cpu_on_finish, sdei_cpu_on_init);
/* Subscribe to PSCI CPU suspend finisher for per-CPU configuration */
SUBSCRIBE_TO_EVENT(psci_suspend_pwrdown_finish, sdei_cpu_wakeup_init);