From: Eliad Peller <eliad@xxxxxxxxxx>
Add d0i3_refs debugfs file that prints the currently taken
mvm D0i3 refs.
Signed-off-by: Eliad Peller <eliadx.peller@xxxxxxxxx>
Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/debugfs.c | 30 ++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 6ddc188..2253d5b 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -838,6 +838,34 @@ static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
}
#endif
+#define PRINT_MVM_REF(ref) do { \
+ if (test_bit(ref, mvm->ref_bitmap)) \
+ pos += scnprintf(buf + pos, bufsz - pos, \
+ "\t(0x%lx) %s\n", \
+ BIT(ref), #ref); \
+} while (0)
+
+static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct iwl_mvm *mvm = file->private_data;
+ int pos = 0;
+ char buf[256];
+ const size_t bufsz = sizeof(buf);
+
+ pos += scnprintf(buf + pos, bufsz - pos, "taken mvm refs: 0x%lx\n",
+ mvm->ref_bitmap[0]);
+
+ PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN);
+ PRINT_MVM_REF(IWL_MVM_REF_SCAN);
+ PRINT_MVM_REF(IWL_MVM_REF_ROC);
+ PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT);
+ PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+}
+
#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
@@ -862,6 +890,7 @@ MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10);
MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
+MVM_DEBUGFS_READ_FILE_OPS(d0i3_refs);
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters, 256);
@@ -893,6 +922,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
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);
+ MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, S_IRUSR);
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) {
--
1.7.9.5
--
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