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feat(xilinx): add new state to identify cpu power down

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Currently there is only 1 state for CPU idle which is used while CPU
power down from Linux CPU idle feature. But CPU power down when firmware
send CPU power down request needs new state in self suspend to
distinguish in firmware for CPU power down from power down request or CPU
power down from Linux CPU idle. So add new state PM_STATE_CPU_OFF to
indicate CPU power down from power down request from firmware.

PM_STATE_CPU_OFF state is supported from self-suspend version 3. So
added feature check which sends new state in case of new firmware and
old state i.e. PM_STATE_CPU_IDLE in case of old firmware.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I4118e1b813e5f76fca7b7e9ca1cc598715203fb0
This commit is contained in:
Jay Buddhabhatti 2023-09-11 23:50:06 -07:00
parent 88ee0816a7
commit 5949701600
3 changed files with 25 additions and 4 deletions
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1
plat/xilinx/common/include/pm_defs.h
View file

@ -18,6 +18,7 @@
/* State arguments of the self suspend */
#define PM_STATE_CPU_IDLE 0x0U
#define PM_STATE_CPU_OFF 0x1U
#define PM_STATE_SUSPEND_TO_RAM 0xFU
#define MAX_LATENCY (~0U)

14
plat/xilinx/versal/plat_psci.c
View file

@ -186,6 +186,7 @@ static void __dead2 versal_system_reset(void)
*/
static void versal_pwr_domain_off(const psci_power_state_t *target_state)
{
uint32_t ret, fw_api_version, version[PAYLOAD_ARG_CNT] = {0U};
uint32_t cpu_id = plat_my_core_pos();
const struct pm_proc *proc = pm_get_proc(cpu_id);
@ -205,8 +206,17 @@ static void versal_pwr_domain_off(const psci_power_state_t *target_state)
* invoking CPU_on function, during which resume address will
* be set.
*/
(void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0,
SECURE_FLAG);
ret = pm_feature_check((uint32_t)PM_SELF_SUSPEND, &version[0], SECURE_FLAG);
if (ret == PM_RET_SUCCESS) {
fw_api_version = version[0] & 0xFFFFU;
if (fw_api_version >= 3U) {
(void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_OFF, 0,
SECURE_FLAG);
} else {
(void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0,
SECURE_FLAG);
}
}
}
/**

14
plat/xilinx/versal_net/plat_psci_pm.c
View file

@ -59,6 +59,7 @@ static int32_t versal_net_pwr_domain_on(u_register_t mpidr)
*/
static void versal_net_pwr_domain_off(const psci_power_state_t *target_state)
{
uint32_t ret, fw_api_version, version[PAYLOAD_ARG_CNT] = {0U};
uint32_t cpu_id = plat_my_core_pos();
const struct pm_proc *proc = pm_get_proc(cpu_id);
@ -78,8 +79,17 @@ static void versal_net_pwr_domain_off(const psci_power_state_t *target_state)
* invoking CPU_on function, during which resume address will
* be set.
*/
pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0,
SECURE_FLAG);
ret = pm_feature_check((uint32_t)PM_SELF_SUSPEND, &version[0], SECURE_FLAG);
if (ret == PM_RET_SUCCESS) {
fw_api_version = version[0] & 0xFFFFU;
if (fw_api_version >= 3U) {
(void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_OFF, 0,
SECURE_FLAG);
} else {
(void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0,
SECURE_FLAG);
}
}
}
/**