To support feature check for all modules, append the module id of the API
that is being checked to the feature check API so it could be routed to
the target module for processing.
There is no need to check compatible string becuase the board information
is taken via firmware interface.
Co-developed-by: Saeed Nowshadi <saeed.nowshadi@amd.com>
Signed-off-by: Saeed Nowshadi <saeed.nowshadi@amd.com>
Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
---
drivers/firmware/xilinx/zynqmp.c | 45 +++++++++++++++++-----------
include/linux/firmware/xlnx-zynqmp.h | 11 +++++++
2 files changed, 39 insertions(+), 17 deletions(-)
@@ -182,9 +182,33 @@ static int __do_feature_check_call(const u32 api_id, u32 *ret_payload)
{
int ret;
u64 smc_arg[2];
+ u32 module_id;
+ u32 feature_check_api_id;
- smc_arg[0] = PM_SIP_SVC | PM_FEATURE_CHECK;
- smc_arg[1] = api_id;
+ module_id = FIELD_GET(MODULE_ID_MASK, api_id);
+
+ /*
+ * Feature check of APIs belonging to PM, XSEM, and TF-A are
+ * handled by calling PM_FEATURE_CHECK API. For other modules,
+ * call PM_API_FEATURES API.
+ */
+ if (module_id == PM_MODULE_ID || module_id == XSEM_MODULE_ID ||
+ module_id == TF_A_MODULE_ID)
+ feature_check_api_id = PM_FEATURE_CHECK;
+ else
+ feature_check_api_id = PM_API_FEATURES;
+
+ /*
+ * Feature check of TF-A APIs is done in the TF-A layer
+ * and it expects for MODULE_ID_MASK bits of SMC's arg[0] to
+ * be the same as PM_MODULE_ID.
+ */
+ if (module_id == TF_A_MODULE_ID)
+ module_id = PM_MODULE_ID;
+
+ smc_arg[0] = PM_SIP_SVC | FIELD_PREP(MODULE_ID_MASK, module_id) |
+ feature_check_api_id;
+ smc_arg[1] = (api_id & API_ID_MASK);
ret = do_fw_call(smc_arg[0], smc_arg[1], 0, 0, ret_payload);
if (ret)
@@ -1937,22 +1961,9 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
if (ret)
return ret;
- np = of_find_compatible_node(NULL, NULL, "xlnx,zynqmp");
- if (!np) {
- np = of_find_compatible_node(NULL, NULL, "xlnx,versal");
- if (!np)
- return 0;
-
+ ret = do_feature_check_call(PM_FEATURE_CHECK);
+ if (ret >= 0 && ((ret & FIRMWARE_VERSION_MASK) >= PM_API_VERSION_1))
feature_check_enabled = true;
- }
-
- if (!feature_check_enabled) {
- ret = do_feature_check_call(PM_FEATURE_CHECK);
- if (ret >= 0)
- feature_check_enabled = true;
- }
-
- of_node_put(np);
devinfo = devm_kzalloc(dev, sizeof(*devinfo), GFP_KERNEL);
if (!devinfo)
@@ -32,6 +32,7 @@
#define PM_SIP_SVC 0xC2000000
/* PM API versions */
+#define PM_API_VERSION_1 1
#define PM_API_VERSION_2 2
#define PM_PINCTRL_PARAM_SET_VERSION 2
@@ -47,6 +48,9 @@
#define FAMILY_CODE_MASK GENMASK(27, 21)
#define SUB_FAMILY_CODE_MASK GENMASK(20, 19)
+#define API_ID_MASK GENMASK(7, 0)
+#define MODULE_ID_MASK GENMASK(11, 8)
+
/* ATF only commands */
#define TF_A_PM_REGISTER_SGI 0xa04
#define PM_GET_TRUSTZONE_VERSION 0xa03
@@ -100,6 +104,12 @@
#define SD_ITAPDLY 0xFF180314
#define SD_OTAPDLYSEL 0xFF180318
+enum pm_module_id {
+ PM_MODULE_ID = 0x0,
+ XSEM_MODULE_ID = 0x3,
+ TF_A_MODULE_ID = 0xa,
+};
+
enum pm_api_cb_id {
PM_INIT_SUSPEND_CB = 30,
PM_ACKNOWLEDGE_CB = 31,
@@ -107,6 +117,7 @@ enum pm_api_cb_id {
};
enum pm_api_id {
+ PM_API_FEATURES = 0,
PM_GET_API_VERSION = 1,
PM_REGISTER_NOTIFIER = 5,
PM_FORCE_POWERDOWN = 8,