wifi: iwlwifi: dbg: print pc register data once fw dump occurred

Add debug print for different FW program counter details of
different CPU. Program counter pc details will be read from
TLV during init.

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230413213309.862790d336a9.I34e2ea05a79e8b2552f7f221bacf3af0166cb9c0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

5 files changed, 47 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dump.c b/drivers/net/wireless/intel/iwlwifi/fw/dump.c
index 59ed321bcc27..f86f7b4baa18 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/dump.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/dump.c
@@ -484,6 +484,9 @@ static void iwl_fwrt_dump_fseq_regs(struct iwl_fw_runtime *fwrt)
 
 void iwl_fwrt_dump_error_logs(struct iwl_fw_runtime *fwrt)
 {
+	struct iwl_pc_data *pc_data;
+	u8 count;
+
 	if (!test_bit(STATUS_DEVICE_ENABLED, &fwrt->trans->status)) {
 		IWL_ERR(fwrt,
 			"DEVICE_ENABLED bit is not set. Aborting dump.\n");
@@ -502,6 +505,14 @@ void iwl_fwrt_dump_error_logs(struct iwl_fw_runtime *fwrt)
 		iwl_fwrt_dump_rcm_error_log(fwrt, 1);
 	iwl_fwrt_dump_iml_error_log(fwrt);
 	iwl_fwrt_dump_fseq_regs(fwrt);
+	if (fwrt->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
+		pc_data = fwrt->trans->dbg.pc_data;
+		for (count = 0; count < fwrt->trans->dbg.num_pc;
+		     count++, pc_data++)
+			IWL_ERR(fwrt, "%s: 0x%x\n",
+				pc_data->pc_name,
+				pc_data->pc_address);
+	}
 
 	if (fwrt->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
 		u32 scratch = iwl_read32(fwrt->trans, CSR_FUNC_SCRATCH);
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h
index f2eefca6e260..a0260a1fa099 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -101,6 +101,7 @@ enum iwl_ucode_tlv_type {
 
 	IWL_UCODE_TLV_SEC_TABLE_ADDR		= 66,
 	IWL_UCODE_TLV_D3_KEK_KCK_ADDR		= 67,
+	IWL_UCODE_TLV_CURRENT_PC		= 68,
 
 	IWL_UCODE_TLV_FW_NUM_STATIONS		= IWL_UCODE_TLV_CONST_BASE + 0,
 
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index 4c977ba9cd85..75d52e6cf988 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -127,6 +127,7 @@ static void iwl_dealloc_ucode(struct iwl_drv *drv)
 	kfree(drv->fw.iml);
 	kfree(drv->fw.ucode_capa.cmd_versions);
 	kfree(drv->fw.phy_integration_ver);
+	kfree(drv->trans->dbg.pc_data);
 
 	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 		iwl_free_fw_img(drv, drv->fw.img + i);
@@ -1232,6 +1233,14 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 			iwl_drv_set_dump_exclude(drv, tlv_type,
 						 tlv_data, tlv_len);
 			break;
+		case IWL_UCODE_TLV_CURRENT_PC:
+			if (tlv_len < sizeof(struct iwl_pc_data))
+				goto invalid_tlv_len;
+			drv->trans->dbg.num_pc =
+				tlv_len / sizeof(struct iwl_pc_data);
+			drv->trans->dbg.pc_data =
+				kmemdup(tlv_data, tlv_len, GFP_KERNEL);
+			break;
 		default:
 			IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 			break;
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index dd277a4fa8dd..74ff4788dc83 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -748,6 +748,18 @@ struct iwl_imr_data {
 	__le64 imr_base_addr;
 };
 
+#define IWL_TRANS_CURRENT_PC_NAME_MAX_BYTES      32
+
+/**
+ * struct iwl_pc_data - program counter details
+ * @pc_name: cpu name
+ * @pc_address: cpu program counter
+ */
+struct iwl_pc_data {
+	u8  pc_name[IWL_TRANS_CURRENT_PC_NAME_MAX_BYTES];
+	u32 pc_address;
+};
+
 /**
  * struct iwl_trans_debug - transport debug related data
  *
@@ -777,6 +789,8 @@ struct iwl_imr_data {
  * @ucode_preset: preset based on ucode
  * @dump_file_name_ext: dump file name extension
  * @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
  */
 struct iwl_trans_debug {
 	u8 n_dest_reg;
@@ -817,6 +831,8 @@ struct iwl_trans_debug {
 	struct iwl_imr_data imr_data;
 	u8 dump_file_name_ext[IWL_FW_INI_MAX_NAME];
 	bool dump_file_name_ext_valid;
+	u32 num_pc;
+	struct iwl_pc_data *pc_data;
 };
 
 struct iwl_dma_ptr {
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index 521eded39028..3f5cc6bf3f1c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -321,6 +321,8 @@ static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
 	static const u16 alive_cmd[] = { UCODE_ALIVE_NTFY };
 	bool run_in_rfkill =
 		ucode_type == IWL_UCODE_INIT || iwl_mvm_has_unified_ucode(mvm);
+	u8 count;
+	struct iwl_pc_data *pc_data;
 
 	if (ucode_type == IWL_UCODE_REGULAR &&
 	    iwl_fw_dbg_conf_usniffer(mvm->fw, FW_DBG_START_FROM_ALIVE) &&
@@ -393,6 +395,14 @@ static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
 
 		/* LMAC/UMAC PC info */
 		if (trans->trans_cfg->device_family >=
+					IWL_DEVICE_FAMILY_22000) {
+			pc_data = trans->dbg.pc_data;
+			for (count = 0; count < trans->dbg.num_pc;
+			     count++, pc_data++)
+				IWL_ERR(mvm, "%s: 0x%x\n",
+					pc_data->pc_name,
+					pc_data->pc_address);
+		} else if (trans->trans_cfg->device_family >=
 					IWL_DEVICE_FAMILY_9000) {
 			IWL_ERR(mvm, "UMAC PC: 0x%x\n",
 				iwl_read_umac_prph(trans,