diff options
| author | Alexander Bondar <alexander.bondar@intel.com> | 2013-10-17 14:26:50 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-12-09 22:27:57 +0200 |
| commit | 119663c3603412962f2986c1318950aef7421b1f (patch) | |
| tree | 1bc41cb61782c2f519eff42e1fdb8a8eadbae041 /drivers/net/wireless | |
| parent | 3961a61aad9b711bcd74aa7ea2c3655046df7b43 (diff) | |
iwlwifi: mvm: Add debugfs entry to generate NMI to NIC
Writting to fw_nmi entry will set DEVICE_SET_NMI_REG (0x00a01c30)
generating NMI that halts NIC CPU.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-prph.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/debugfs.c | 14 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h index a70c7b9d9bad..f6412dae2659 100644 --- a/drivers/net/wireless/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/iwlwifi/iwl-prph.h @@ -102,6 +102,9 @@ /* Device system time */ #define DEVICE_SYSTEM_TIME_REG 0xA0206C +/* Device NMI register */ +#define DEVICE_SET_NMI_REG 0x00a01c30 + /***************************************************************************** * 7000/3000 series SHR DTS addresses * *****************************************************************************/ diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c index a8fe6b41f9a3..342bd1a07ab7 100644 --- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c @@ -63,6 +63,7 @@ #include "mvm.h" #include "sta.h" #include "iwl-io.h" +#include "iwl-prph.h" struct iwl_dbgfs_mvm_ctx { struct iwl_mvm *mvm; @@ -804,6 +805,17 @@ static ssize_t iwl_dbgfs_fw_restart_write(struct file *file, return count; } +static ssize_t iwl_dbgfs_fw_nmi_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + + iwl_write_prph(mvm->trans, DEVICE_SET_NMI_REG, 1); + + return count; +} + static ssize_t iwl_dbgfs_scan_ant_rxchain_read(struct file *file, char __user *user_buf, @@ -1168,6 +1180,7 @@ MVM_DEBUGFS_READ_FILE_OPS(bt_cmd); MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off); MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats); MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart); +MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi); MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain); #ifdef CONFIG_PM_SLEEP @@ -1196,6 +1209,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) S_IRUSR | S_IWUSR); MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR); MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, S_IWUSR); MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir, S_IWUSR | S_IRUSR); #ifdef CONFIG_PM_SLEEP |