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iwlwifi: mvm: Support setting continuous recording debug mode 

Add ability to set the continuous recording mode of the FW, while
the FW debug data is configured to be stored on the NIC.
This could be useful for storing large segments of FW usniffer
debug data on the host, while having small store space on the NIC.
The host receives the usniffer data through the regular RX path, and
the data can get extracted using trace-cmd.

Signed-off-by: Golan Ben-Ami <golan.ben.ami@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Golan Ben Ami 2015-07-27 17:02:35 +03:00 committed by Emmanuel Grumbach
parent 2f89a5d7d3
commit 321c2104f2
3 changed files with 62 additions and 0 deletions
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40
drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
View File

@ -961,6 +961,44 @@ static ssize_t iwl_dbgfs_fw_dbg_conf_read(struct file *file,
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
/*
* Enable / Disable continuous recording.
* Cause the FW to start continuous recording, by sending the relevant hcmd.
* Enable: input of every integer larger than 0, ENABLE_CONT_RECORDING.
* Disable: for 0 as input, DISABLE_CONT_RECORDING.
*/
static ssize_t iwl_dbgfs_cont_recording_write(struct iwl_mvm *mvm,
char *buf, size_t count,
loff_t *ppos)
{
struct iwl_trans *trans = mvm->trans;
const struct iwl_fw_dbg_dest_tlv *dest = trans->dbg_dest_tlv;
struct iwl_continuous_record_cmd cont_rec = {};
int ret, rec_mode;
if (!dest)
return -EOPNOTSUPP;
if (dest->monitor_mode != SMEM_MODE ||
trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
return -EOPNOTSUPP;
ret = kstrtouint(buf, 0, &rec_mode);
if (ret)
return ret;
cont_rec.record_mode.enable_recording = rec_mode ?
cpu_to_le16(ENABLE_CONT_RECORDING) :
cpu_to_le16(DISABLE_CONT_RECORDING);
mutex_lock(&mvm->mutex);
ret = iwl_mvm_send_cmd_pdu(mvm, LDBG_CONFIG_CMD, 0,
sizeof(cont_rec), &cont_rec);
mutex_unlock(&mvm->mutex);
return ret ?: count;
}
static ssize_t iwl_dbgfs_fw_dbg_conf_write(struct iwl_mvm *mvm,
char *buf, size_t count,
loff_t *ppos)
@ -1413,6 +1451,7 @@ MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8);
MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 8);
MVM_DEBUGFS_WRITE_FILE_OPS(cont_recording, 8);
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters, 256);
@ -1456,6 +1495,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
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);
MVM_DEBUGFS_ADD_FILE(cont_recording, mvm->debugfs_dir, S_IWUSR);
if (!debugfs_create_bool("enable_scan_iteration_notif",
S_IRUSR | S_IWUSR,
mvm->debugfs_dir,

21
drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h
View File

@ -239,6 +239,7 @@ enum {
DTS_MEASUREMENT_NOTIFICATION = 0xdd,
REPLY_DEBUG_CMD = 0xf0,
LDBG_CONFIG_CMD = 0xf6,
DEBUG_LOG_MSG = 0xf7,
BCAST_FILTER_CMD = 0xcf,
@ -426,6 +427,26 @@ struct iwl_fw_get_item_cmd {
__le32 item_id;
} __packed; /* FW_GET_ITEM_CMD_API_S_VER_1 */
#define CONT_REC_COMMAND_SIZE 80
#define ENABLE_CONT_RECORDING 0x15
#define DISABLE_CONT_RECORDING 0x16
/*
* struct iwl_continuous_record_mode - recording mode
*/
struct iwl_continuous_record_mode {
__le16 enable_recording;
} __packed;
/*
* struct iwl_continuous_record_cmd - enable/disable continuous recording
*/
struct iwl_continuous_record_cmd {
struct iwl_continuous_record_mode record_mode;
u8 pad[CONT_REC_COMMAND_SIZE -
sizeof(struct iwl_continuous_record_mode)];
} __packed;
struct iwl_fw_get_item_resp {
__le32 item_id;
__le32 item_byte_cnt;

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

@ -363,6 +363,7 @@ static const char *const iwl_mvm_cmd_strings[REPLY_MAX + 1] = {
CMD(TDLS_CONFIG_CMD),
CMD(MCC_UPDATE_CMD),
CMD(SCAN_ITERATION_COMPLETE_UMAC),
CMD(LDBG_CONFIG_CMD),
};
#undef CMD