xilinx: versal: Add support for PM_GET_OPERATING_CHARACTERISTIC EEMI call
This patch adds EEMI support for PM_GET_OPERATING_CHARACTERISTIC api id. This
interface obtains operating characteristic of a device from PMC firmware. The
'power', 'temperature', and 'latency' characteristic are the options that are
supported.
Signed-off-by: Saeed Nowshadi <saeed.nowshadi@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: If30959ba6a3a778a17df2a4281c2c09832cf7e92
diff --git a/plat/xilinx/versal/pm_service/pm_api_sys.c b/plat/xilinx/versal/pm_service/pm_api_sys.c
index a4c0b28..dbe94e6 100644
--- a/plat/xilinx/versal/pm_service/pm_api_sys.c
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.c
@@ -785,6 +785,7 @@
return PM_RET_SUCCESS;
case PM_GET_API_VERSION:
case PM_GET_DEVICE_STATUS:
+ case PM_GET_OP_CHARACTERISTIC:
case PM_REQ_SUSPEND:
case PM_SELF_SUSPEND:
case PM_FORCE_POWERDOWN:
@@ -859,3 +860,26 @@
address_high, address_low);
return pm_ipi_send_sync(primary_proc, payload, NULL, 0);
}
+
+/**
+ * pm_get_op_characteristic() - PM call to request operating characteristics
+ * of a device
+ * @device_id Device id
+ * @type Type of the operating characteristic
+ * (power, temperature and latency)
+ * @result Returns the operating characteristic for the requested device,
+ * specified by the type
+ *
+ * @return Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_get_op_characteristic(uint32_t device_id,
+ enum pm_opchar_type type,
+ uint32_t *result)
+{
+ uint32_t payload[PAYLOAD_ARG_CNT];
+
+ /* Send request to the PMC */
+ PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, PM_GET_OP_CHARACTERISTIC,
+ device_id, type);
+ return pm_ipi_send_sync(primary_proc, payload, result, 1);
+}
diff --git a/plat/xilinx/versal/pm_service/pm_api_sys.h b/plat/xilinx/versal/pm_service/pm_api_sys.h
index 995c49e..4de592a 100644
--- a/plat/xilinx/versal/pm_service/pm_api_sys.h
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.h
@@ -69,4 +69,7 @@
enum pm_ret_status pm_feature_check(uint32_t api_id, unsigned int *version);
enum pm_ret_status pm_load_pdi(uint32_t src, uint32_t address_low,
uint32_t address_high);
+enum pm_ret_status pm_get_op_characteristic(uint32_t device_id,
+ enum pm_opchar_type type,
+ uint32_t *result);
#endif /* PM_API_SYS_H */
diff --git a/plat/xilinx/versal/pm_service/pm_defs.h b/plat/xilinx/versal/pm_service/pm_defs.h
index 7d4066b..966b00b 100644
--- a/plat/xilinx/versal/pm_service/pm_defs.h
+++ b/plat/xilinx/versal/pm_service/pm_defs.h
@@ -42,6 +42,7 @@
/* PM API ids */
#define PM_GET_API_VERSION 1U
#define PM_GET_DEVICE_STATUS 3U
+#define PM_GET_OP_CHARACTERISTIC 4U
#define PM_REQ_SUSPEND 6U
#define PM_SELF_SUSPEND 7U
#define PM_FORCE_POWERDOWN 8U
@@ -112,6 +113,12 @@
ABORT_REASON_UNKNOWN,
};
+enum pm_opchar_type {
+ PM_OPCHAR_TYPE_POWER = 1,
+ PM_OPCHAR_TYPE_TEMP,
+ PM_OPCHAR_TYPE_LATENCY,
+};
+
/**
* Subsystem IDs
*/
diff --git a/plat/xilinx/versal/pm_service/pm_svc_main.c b/plat/xilinx/versal/pm_service/pm_svc_main.c
index d246013..a3a9f43 100644
--- a/plat/xilinx/versal/pm_service/pm_svc_main.c
+++ b/plat/xilinx/versal/pm_service/pm_svc_main.c
@@ -313,6 +313,14 @@
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));
+ }
+
default:
WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
SMC_RET1(handle, SMC_UNK);