wifi: iwlwifi: fw: disable firmware debug asserts

Disable firmware debug asserts, which are used for internal
firmware testing purposes only.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230913145231.8feafd9b17be.Ia7bec82ac25897caab581692d67055aa1aca2ed2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/debug.h

@@ -522,4 +522,26 @@ enum iwl_mvm_tas_statically_disabled_reason {
 	TAS_DISABLED_REASON_MAX,
 }; /*_TAS_STATICALLY_DISABLED_REASON_E*/
 
+/**
+ * enum iwl_fw_dbg_config_cmd_type - types of FW debug config command
+ * @DEBUG_TOKEN_CONFIG_TYPE: token config type
+ */
+enum iwl_fw_dbg_config_cmd_type {
+	DEBUG_TOKEN_CONFIG_TYPE = 0x2B,
+}; /* LDBG_CFG_CMD_TYPE_API_E_VER_1 */
+
+/* this token disables debug asserts in the firmware */
+#define IWL_FW_DBG_CONFIG_TOKEN 0x00011301
+
+/**
+ * struct iwl_fw_dbg_config_cmd - configure FW debug
+ *
+ * @type: according to &enum iwl_fw_dbg_config_cmd_type
+ * @conf: FW configuration
+ */
+struct iwl_fw_dbg_config_cmd {
+	__le32 type;
+	__le32 conf;
+} __packed; /* LDBG_CFG_CMD_API_S_VER_7 */
+
 #endif /* __iwl_fw_api_debug_h__ */

drivers/net/wireless/intel/iwlwifi/fw/dbg.c

@@ -3228,3 +3228,28 @@ void iwl_fw_dbg_stop_restart_recording(struct iwl_fw_runtime *fwrt,
 #endif
 }
 IWL_EXPORT_SYMBOL(iwl_fw_dbg_stop_restart_recording);
+
+void iwl_fw_disable_dbg_asserts(struct iwl_fw_runtime *fwrt)
+{
+	struct iwl_fw_dbg_config_cmd cmd = {
+		.type = cpu_to_le32(DEBUG_TOKEN_CONFIG_TYPE),
+		.conf = cpu_to_le32(IWL_FW_DBG_CONFIG_TOKEN),
+	};
+	struct iwl_host_cmd hcmd = {
+		.id = WIDE_ID(LONG_GROUP, LDBG_CONFIG_CMD),
+		.data[0] = &cmd,
+		.len[0] = sizeof(cmd),
+	};
+	u32 preset = u32_get_bits(fwrt->trans->dbg.domains_bitmap,
+				  GENMASK(31, IWL_FW_DBG_DOMAIN_POS + 1));
+
+	/* supported starting from 9000 devices */
+	if (fwrt->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
+		return;
+
+	if (fwrt->trans->dbg.yoyo_bin_loaded || (preset && preset != 1))
+		return;
+
+	iwl_trans_send_cmd(fwrt->trans, &hcmd);
+}
+IWL_EXPORT_SYMBOL(iwl_fw_disable_dbg_asserts);

drivers/net/wireless/intel/iwlwifi/fw/dbg.h

@@ -329,6 +329,7 @@ void iwl_fwrt_dump_error_logs(struct iwl_fw_runtime *fwrt);
 void iwl_send_dbg_dump_complete_cmd(struct iwl_fw_runtime *fwrt,
 				    u32 timepoint,
 				    u32 timepoint_data);
+void iwl_fw_disable_dbg_asserts(struct iwl_fw_runtime *fwrt);
 
 #define IWL_FW_CHECK_FAILED(_obj, _fmt, ...)				\
 	IWL_ERR_LIMIT(_obj, _fmt, __VA_ARGS__)

drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c

@@ -509,6 +509,8 @@ void iwl_dbg_tlv_load_bin(struct device *dev, struct iwl_trans *trans)
 	if (res)
 		return;
 
+	trans->dbg.yoyo_bin_loaded = true;
+
 	iwl_dbg_tlv_parse_bin(trans, fw->data, fw->size);
 
 	release_firmware(fw);

drivers/net/wireless/intel/iwlwifi/iwl-trans.h

@@ -839,6 +839,7 @@ struct iwl_pc_data {
  * @dump_file_name_ext_valid: dump file name extension if valid or not
  * @num_pc: number of program counter for cpu
  * @pc_data: details of the program counter
+ * @yoyo_bin_loaded: tells if a yoyo debug file has been loaded
  */
 struct iwl_trans_debug {
 	u8 n_dest_reg;
@@ -880,6 +881,7 @@ struct iwl_trans_debug {
 	bool dump_file_name_ext_valid;
 	u32 num_pc;
 	struct iwl_pc_data *pc_data;
+	bool yoyo_bin_loaded;
 };
 
 struct iwl_dma_ptr {

drivers/net/wireless/intel/iwlwifi/mvm/fw.c

@@ -1527,6 +1527,7 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
 	/* FW loaded successfully */
 	mvm->pldr_sync = false;
 
+	iwl_fw_disable_dbg_asserts(&mvm->fwrt);
 	iwl_get_shared_mem_conf(&mvm->fwrt);
 
 	ret = iwl_mvm_sf_update(mvm, NULL, false);