/**
* pm_client_set_wakeup_sources - Set all slaves with enabled interrupts as wake
* sources in the PMU firmware
*/
static void pm_client_set_wakeup_sources(void)
{
uint32_t reg_num;
uint8_t pm_wakeup_nodes_set[NODE_MAX];
uintptr_t isenabler1 = BASE_GICD_BASE + GICD_ISENABLER + 4;
/* In case of power-off suspend, only NODE_EXTERN must be set */
if (suspend_mode == PM_SUSPEND_MODE_POWER_OFF) {
enum pm_ret_status ret;
ret = pm_set_wakeup_source(NODE_APU, NODE_EXTERN, 1);
/**
* If NODE_EXTERN could not be set as wake source, proceed with
* standard suspend (no one will wake the system otherwise)
*/
if (ret == PM_RET_SUCCESS)
return;
}
zeromem(&pm_wakeup_nodes_set, sizeof(pm_wakeup_nodes_set));
for (reg_num = 0; reg_num < NUM_GICD_ISENABLER; reg_num++) {
uint32_t base_irq = reg_num << ISENABLER_SHIFT;
uint32_t reg = mmio_read_32(isenabler1 + (reg_num << 2));
if (!reg)
continue;
while (reg) {
enum pm_node_id node;
uint32_t idx, ret, irq, lowest_set = reg & (-reg);
idx = __builtin_ctz(lowest_set);
irq = base_irq + idx;
if (irq > IRQ_MAX)
break;
node = irq_to_pm_node(irq);
reg &= ~lowest_set;
if ((node != NODE_UNKNOWN) &&
(!pm_wakeup_nodes_set[node])) {
ret = pm_set_wakeup_source(NODE_APU, node, 1);
pm_wakeup_nodes_set[node] = !ret;
}
}
}
}
/**
* pm_smc_handler() - SMC handler for PM-API calls coming from EL1/EL2.
* @smc_fid - Function Identifier
* @x1 - x4 - Arguments
* @cookie - Unused
* @handler - Pointer to caller's context structure
*
* @return - Unused
*
* Determines that smc_fid is valid and supported PM SMC Function ID from the
* list of pm_api_ids, otherwise completes the request with
* the unknown SMC Function ID
*
* The SMC calls for PM service are forwarded from SIP Service SMC handler
* function with rt_svc_handle signature
*/
uint64_t pm_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)
{
enum pm_ret_status ret;
uint32_t pm_arg[4];
/* Handle case where PM wasn't initialized properly */
if (pm_down)
SMC_RET1(handle, SMC_UNK);
pm_arg[0] = (uint32_t)x1;
pm_arg[1] = (uint32_t)(x1 >> 32);
pm_arg[2] = (uint32_t)x2;
pm_arg[3] = (uint32_t)(x2 >> 32);
switch (smc_fid & FUNCID_NUM_MASK) {
/* PM API Functions */
case PM_SELF_SUSPEND:
ret = pm_self_suspend(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_REQ_SUSPEND:
ret = pm_req_suspend(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_REQ_WAKEUP:
ret = pm_req_wakeup(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_FORCE_POWERDOWN:
ret = pm_force_powerdown(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_ABORT_SUSPEND:
ret = pm_abort_suspend(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_SET_WAKEUP_SOURCE:
ret = pm_set_wakeup_source(pm_arg[0], pm_arg[1], pm_arg[2]);
SMC_RET1(handle, (uint64_t)ret);
case PM_SYSTEM_SHUTDOWN:
ret = pm_system_shutdown(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_REQ_NODE:
ret = pm_req_node(pm_arg[0], pm_arg[1], pm_arg[2], pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_RELEASE_NODE:
ret = pm_release_node(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_SET_REQUIREMENT:
ret = pm_set_requirement(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_SET_MAX_LATENCY:
ret = pm_set_max_latency(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_GET_API_VERSION:
/* Check is PM API version already verified */
if (pm_ctx.api_version == PM_VERSION)
SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS |
((uint64_t)PM_VERSION << 32));
ret = pm_get_api_version(&pm_ctx.api_version);
SMC_RET1(handle, (uint64_t)ret |
((uint64_t)pm_ctx.api_version << 32));
case PM_SET_CONFIGURATION:
ret = pm_set_configuration(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_GET_NODE_STATUS:
ret = pm_get_node_status(pm_arg[0]);
SMC_RET1(handle, (uint64_t)ret);
case PM_GET_OP_CHARACTERISTIC:
{
uint32_t result;
ret = pm_get_op_characteristic(pm_arg[0], pm_arg[1], &result);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)result << 32));
}
case PM_REGISTER_NOTIFIER:
ret = pm_register_notifier(pm_arg[0], pm_arg[1], pm_arg[2],
pm_arg[3]);
SMC_RET1(handle, (uint64_t)ret);
case PM_RESET_ASSERT:
ret = pm_reset_assert(pm_arg[0], pm_arg[1]);
SMC_RET1(handle, (uint64_t)ret);
case PM_RESET_GET_STATUS:
{
uint32_t reset_status;
ret = pm_reset_get_status(pm_arg[0], &reset_status);
SMC_RET1(handle, (uint64_t)ret |
((uint64_t)reset_status << 32));
}
/* PM memory access functions */
case PM_MMIO_WRITE:
ret = pm_mmio_write(pm_arg[0], pm_arg[1], pm_arg[2]);
SMC_RET1(handle, (uint64_t)ret);
case PM_MMIO_READ:
{
uint32_t value;
ret = pm_mmio_read(pm_arg[0], &value);
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
}
default:
WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
SMC_RET1(handle, SMC_UNK);
}
}