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

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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: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
This commit is contained in:
Emmanuel Grumbach 2015-08-17 10:45:50 +03:00 committed by Luciano Coelho
parent 62e004fe94
commit e50460192e
3 changed files with 17 additions and 0 deletions
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15
drivers/net/wireless/iwlwifi/mvm/debugfs.c
View File

@ -1361,11 +1361,25 @@ out:
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,

1
drivers/net/wireless/iwlwifi/mvm/fw-api.h
View File

@ -100,6 +100,7 @@ enum iwl_mvm_tx_fifo {
enum {
MVM_ALIVE = 0x1,
REPLY_ERROR = 0x2,
ECHO_CMD = 0x3,
INIT_COMPLETE_NOTIF = 0x4,

1
drivers/net/wireless/iwlwifi/mvm/ops.c
View File

@ -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),