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lede/package/kernel/mac80211/patches/ath11k/101-ath11k-update-debugfs-support-for-mupltiple-radios-i.patch

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From 62c6c38a1e55a4f0c659dbb16cfa8196c3ac8467 Mon Sep 17 00:00:00 2001
From: Anilkumar Kolli <akolli@codeaurora.org>
Date: Tue, 14 Dec 2021 17:07:29 +0200
Subject: [PATCH] ath11k: update debugfs support for mupltiple radios in PCI
bus
debugfs_ath11k struct is moved to ath11k_core, since its common
for both pci and ahb.
Current ath11k_pci insmod fails if there are multiple PCI rdaios,
ath11k_pci 0000:01:00.0: Hardware name qcn9074 hw1.0
debugfs: Directory 'ath11k' with parent '/' already present!
ath11k_pci 0000:01:00.0: failed to create ath11k debugfs
ath11k_pci 0000:01:00.0: failed to create soc core: -17
ath11k_pci 0000:01:00.0: failed to init core: -17
ath11k_pci: probe of 0000:01:00.0 failed with error -17
To avoid the failure, debugfs directory is created with soc_name
and bus_id to allow creating debugfs directory for second PCI radio.
with this Debugfs entries looks like,
# ls -l /sys/kernel/debug/ath11k/
ipq8074 hw2.0 qcn9000 hw1.0_0000:01:00.0 qcn9000 hw1.0_0001:01:00.0
# ls -l /sys/kernel/debug/ath11k/ipq8074 hw2.0/
mac0 mac1 simulate_fw_crash soc_dp_stats
# ls -l /sys/kernel/debug/ath11k/qcn9000 hw1.0_0000:01:00.0
mac0 simulate_fw_crash soc_dp_stats
# /sys/kernel/debug/ath11k/qcn9000 hw1.0_0001:01:00.0:
mac0 simulate_fw_crash soc_dp_stats
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1.r2-00012-QCAHKSWPL_SILICONZ-1
Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Patchwork-Id: 12101611
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/ath/ath11k/core.c | 12 +++++
drivers/net/wireless/ath/ath11k/core.h | 1 -
drivers/net/wireless/ath/ath11k/debugfs.c | 57 +++++++++++++++++++----
drivers/net/wireless/ath/ath11k/debugfs.h | 11 +++++
4 files changed, 70 insertions(+), 11 deletions(-)
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -1461,5 +1461,17 @@ err_sc_free:
}
EXPORT_SYMBOL(ath11k_core_alloc);
+static int ath11k_init(void)
+{
+ return ath11k_debugfs_create();
+}
+module_init(ath11k_init);
+
+static void ath11k_exit(void)
+{
+ ath11k_debugfs_destroy();
+}
+module_exit(ath11k_exit);
+
MODULE_DESCRIPTION("Core module for Qualcomm Atheros 802.11ax wireless LAN cards.");
MODULE_LICENSE("Dual BSD/GPL");
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -777,7 +777,6 @@ struct ath11k_base {
enum ath11k_dfs_region dfs_region;
#ifdef CPTCFG_ATH11K_DEBUGFS
struct dentry *debugfs_soc;
- struct dentry *debugfs_ath11k;
#endif
struct ath11k_soc_dp_stats soc_stats;
--- a/drivers/net/wireless/ath/ath11k/debugfs.c
+++ b/drivers/net/wireless/ath/ath11k/debugfs.c
@@ -13,6 +13,8 @@
#include "debugfs_htt_stats.h"
#include "peer.h"
+struct dentry *debugfs_ath11k;
+
static const char *htt_bp_umac_ring[HTT_SW_UMAC_RING_IDX_MAX] = {
"REO2SW1_RING",
"REO2SW2_RING",
@@ -942,10 +944,6 @@ int ath11k_debugfs_pdev_create(struct at
if (test_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags))
return 0;
- ab->debugfs_soc = debugfs_create_dir(ab->hw_params.name, ab->debugfs_ath11k);
- if (IS_ERR(ab->debugfs_soc))
- return PTR_ERR(ab->debugfs_soc);
-
debugfs_create_file("simulate_fw_crash", 0600, ab->debugfs_soc, ab,
&fops_simulate_fw_crash);
@@ -957,24 +955,58 @@ int ath11k_debugfs_pdev_create(struct at
void ath11k_debugfs_pdev_destroy(struct ath11k_base *ab)
{
- debugfs_remove_recursive(ab->debugfs_soc);
- ab->debugfs_soc = NULL;
}
int ath11k_debugfs_soc_create(struct ath11k_base *ab)
{
- ab->debugfs_ath11k = debugfs_create_dir("ath11k", NULL);
+ struct device *dev = ab->dev;
+ char soc_name[64] = {0};
+
+ if (!(IS_ERR_OR_NULL(ab->debugfs_soc)))
+ return 0;
+
+ if (ab->hif.bus == ATH11K_BUS_AHB) {
+ snprintf(soc_name, sizeof(soc_name), "%s", ab->hw_params.name);
+ } else {
+ snprintf(soc_name, sizeof(soc_name), "%s_%s",
+ ab->hw_params.name, dev_name(dev));
+ }
- return PTR_ERR_OR_ZERO(ab->debugfs_ath11k);
+ ab->debugfs_soc = debugfs_create_dir(soc_name, debugfs_ath11k);
+ if (IS_ERR_OR_NULL(ab->debugfs_soc)) {
+ if (IS_ERR(ab->debugfs_soc))
+ return PTR_ERR(ab->debugfs_soc);
+ return -ENOMEM;
+ }
+
+ return 0;
}
void ath11k_debugfs_soc_destroy(struct ath11k_base *ab)
{
- debugfs_remove_recursive(ab->debugfs_ath11k);
- ab->debugfs_ath11k = NULL;
+ debugfs_remove_recursive(ab->debugfs_soc);
+ ab->debugfs_soc = NULL;
}
EXPORT_SYMBOL(ath11k_debugfs_soc_destroy);
+int ath11k_debugfs_create(void)
+{
+ debugfs_ath11k = debugfs_create_dir("ath11k", NULL);
+ if (IS_ERR_OR_NULL(debugfs_ath11k)) {
+ if (IS_ERR(debugfs_ath11k))
+ return PTR_ERR(debugfs_ath11k);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void ath11k_debugfs_destroy(void)
+{
+ debugfs_remove_recursive(debugfs_ath11k);
+ debugfs_ath11k = NULL;
+}
+
void ath11k_debugfs_fw_stats_init(struct ath11k *ar)
{
struct dentry *fwstats_dir = debugfs_create_dir("fw_stats",
@@ -1180,6 +1212,9 @@ int ath11k_debugfs_register(struct ath11
char pdev_name[5];
char buf[100] = {0};
+ if (!(IS_ERR_OR_NULL(ar->debug.debugfs_pdev)))
+ return 0;
+
snprintf(pdev_name, sizeof(pdev_name), "%s%d", "mac", ar->pdev_idx);
ar->debug.debugfs_pdev = debugfs_create_dir(pdev_name, ab->debugfs_soc);
@@ -1221,6 +1256,8 @@ int ath11k_debugfs_register(struct ath11
void ath11k_debugfs_unregister(struct ath11k *ar)
{
+ debugfs_remove_recursive(ar->debug.debugfs_pdev);
+ ar->debug.debugfs_pdev = NULL;
}
static ssize_t ath11k_write_twt_add_dialog(struct file *file,
--- a/drivers/net/wireless/ath/ath11k/debugfs.h
+++ b/drivers/net/wireless/ath/ath11k/debugfs.h
@@ -233,6 +233,8 @@ struct ath11k_fw_dbglog {
};
#ifdef CPTCFG_ATH11K_DEBUGFS
+int ath11k_debugfs_create(void);
+void ath11k_debugfs_destroy(void);
int ath11k_debugfs_soc_create(struct ath11k_base *ab);
void ath11k_debugfs_soc_destroy(struct ath11k_base *ab);
int ath11k_debugfs_pdev_create(struct ath11k_base *ab);
@@ -280,6 +282,15 @@ int ath11k_debugfs_add_interface(struct
void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif);
#else
+static inline int ath11k_debugfs_create(void)
+{
+ return 0;
+}
+
+static inline void ath11k_debugfs_destroy(void)
+{
+}
+
static inline int ath11k_debugfs_soc_create(struct ath11k_base *ab)
{
return 0;
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