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Commit e5046019 authored by Emmanuel Grumbach's avatar Emmanuel Grumbach Committed by Luciano Coelho
Browse files

iwlwifi: mvm: add debugfs hook to send ECHO_CMD to the firmware 



ECHO_CMD is a simple command that can be sent to the
firmware just to check that it is alive.
This command is useful for debug purpose, provide a debugfs
hook to send it.

Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: default avatarLuciano Coelho <luciano.coelho@intel.com>
parent 62e004fe

drivers/net/wireless/iwlwifi/mvm/debugfs.c

+15 −0
Original line number Diff line number Diff line
@@ -1361,11 +1361,25 @@ iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf, 
	return count;

}



static ssize_t

iwl_dbgfs_send_echo_cmd_write(struct iwl_mvm *mvm, char *buf,

			      size_t count, loff_t *ppos)

{

	int ret;



	mutex_lock(&mvm->mutex);

	ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);

	mutex_unlock(&mvm->mutex);



	return ret ?: count;

}



MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64);



/* Device wide debugfs entries */

MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);

MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);

MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8);

MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);

MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64);

MVM_DEBUGFS_READ_FILE_OPS(nic_temp);
@@ -1425,6 +1439,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) 
	MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, S_IRUSR | S_IWUSR);

	MVM_DEBUGFS_ADD_FILE(fw_dbg_conf, mvm->debugfs_dir, S_IRUSR | S_IWUSR);

	MVM_DEBUGFS_ADD_FILE(fw_dbg_collect, mvm->debugfs_dir, S_IWUSR);

	MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, S_IWUSR);

	if (!debugfs_create_bool("enable_scan_iteration_notif",

				 S_IRUSR | S_IWUSR,

				 mvm->debugfs_dir,

drivers/net/wireless/iwlwifi/mvm/fw-api.h

+1 −0
Original line number Diff line number Diff line
@@ -100,6 +100,7 @@ enum iwl_mvm_tx_fifo { 
enum {

	MVM_ALIVE = 0x1,

	REPLY_ERROR = 0x2,

	ECHO_CMD = 0x3,



	INIT_COMPLETE_NOTIF = 0x4,

drivers/net/wireless/iwlwifi/mvm/ops.c

+1 −0
Original line number Diff line number Diff line
@@ -271,6 +271,7 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 
static const char *const iwl_mvm_cmd_strings[REPLY_MAX + 1] = {

	CMD(MVM_ALIVE),

	CMD(REPLY_ERROR),

	CMD(ECHO_CMD),

	CMD(INIT_COMPLETE_NOTIF),

	CMD(PHY_CONTEXT_CMD),

	CMD(MGMT_MCAST_KEY),