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authorEmmanuel Grumbach <emmanuel.grumbach@intel.com>2015-08-17 10:45:50 +0300
committerLuciano Coelho <luciano.coelho@intel.com>2015-08-28 13:26:32 +0300
commite50460192e6e326fc748037c7ba69565fc18f992 (patch)
tree6f20ab5ff8fe428121f17f5cf2c2134f12dacae4 /drivers/net
parent62e004fe941d56cb70ea9148bb79cf6698751248 (diff)
downloadlinux-e50460192e6e326fc748037c7ba69565fc18f992.tar.xz
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: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/debugfs.c15
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/fw-api.h1
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/ops.c1
3 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 08d2ae355700..3b8481f34a18 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -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,
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/iwlwifi/mvm/fw-api.h
index 4af7513adda2..cd293d27677e 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api.h
@@ -100,6 +100,7 @@ enum iwl_mvm_tx_fifo {
enum {
MVM_ALIVE = 0x1,
REPLY_ERROR = 0x2,
+ ECHO_CMD = 0x3,
INIT_COMPLETE_NOTIF = 0x4,
diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c
index a37de3f410a0..009228615d26 100644
--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
@@ -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),