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* [PATCH] ath11k: add OMI debug support
@ 2019-12-04 16:25 John Crispin
  2019-12-05  4:57 ` vthiagar
  0 siblings, 1 reply; 2+ messages in thread
From: John Crispin @ 2019-12-04 16:25 UTC (permalink / raw)
  To: Kalle Valo; +Cc: linux-wireless, ath11k, John Crispin

This patch allows us to initiate a OMI transaction for test purposes using
a debugfs interface. the xmit_omi file expects 9 parameters. The first two
are VHT and HE followed by the 7 A-Control fields from D4.0/9.2.4.6a.2.

Signed-off-by: John Crispin <john@phrozen.org>
---
 drivers/net/wireless/ath/ath11k/debug.h       | 10 ++++
 drivers/net/wireless/ath/ath11k/debugfs_sta.c | 47 +++++++++++++++++++
 drivers/net/wireless/ath/ath11k/wmi.c         | 33 ++++++++++++-
 drivers/net/wireless/ath/ath11k/wmi.h         | 10 ++++
 4 files changed, 99 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath11k/debug.h b/drivers/net/wireless/ath/ath11k/debug.h
index 805e30c07e14..1535af2eebe5 100644
--- a/drivers/net/wireless/ath/ath11k/debug.h
+++ b/drivers/net/wireless/ath/ath11k/debug.h
@@ -12,6 +12,16 @@
 #define ATH11K_TX_POWER_MAX_VAL	70
 #define ATH11K_TX_POWER_MIN_VAL	0
 
+#define	ATH11K_XMIT_OMI_VHT		BIT(0)
+#define	ATH11K_XMIT_OMI_HE		BIT(1)
+#define	ATH11K_XMIT_OMI_RX_NSS		GENMASK(4, 2)
+#define	ATH11K_XMIT_OMI_CHWIDTH		GENMASK(6, 5)
+#define	ATH11K_XMIT_OMI_UL_UM_DIS	BIT(7)
+#define	ATH11K_XMIT_OMI_TX_NSTS		GENMASK(10, 8)
+#define	ATH11K_XMIT_OMI_ER_SU_DISABLE	BIT(11)
+#define	ATH11K_XMIT_OMI_MIMO_RESOUND	BIT(12)
+#define	ATH11K_XMIT_OMI_UL_MU_DATA_DIS	BIT(13)
+
 enum ath11k_debug_mask {
 	ATH11K_DBG_AHB		= 0x00000001,
 	ATH11K_DBG_WMI		= 0x00000002,
diff --git a/drivers/net/wireless/ath/ath11k/debugfs_sta.c b/drivers/net/wireless/ath/ath11k/debugfs_sta.c
index 3cdc34218a7d..61c40105bd2a 100644
--- a/drivers/net/wireless/ath/ath11k/debugfs_sta.c
+++ b/drivers/net/wireless/ath/ath11k/debugfs_sta.c
@@ -526,6 +526,52 @@ static const struct file_operations fops_peer_pktlog = {
 	.llseek = default_llseek,
 };
 
+static ssize_t ath11k_dbg_sta_write_xmit_omi(struct file *file,
+					     const char __user *ubuf,
+					     size_t count, loff_t *ppos)
+{
+	struct ieee80211_sta *sta = file->private_data;
+	struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
+	u8 vht, he, rx_nss, chwidth, ul_mu_disable, tx_nsts, er_su_disable;
+	u8 resound_recommendation, ul_mu_data_disable;
+	u8 buf[64] = {0};
+	u32 val;
+	int ret;
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		return ret;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu",
+		     &vht, &he, &rx_nss, &chwidth, &ul_mu_disable, &tx_nsts,
+		     &er_su_disable, &resound_recommendation,
+		     &ul_mu_data_disable);
+	if (ret != 9)
+		return -EINVAL;
+
+	val = FIELD_PREP(ATH11K_XMIT_OMI_VHT, vht) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_HE, he) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_RX_NSS, rx_nss) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_CHWIDTH, chwidth) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_UL_UM_DIS, ul_mu_disable) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_TX_NSTS, tx_nsts) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_ER_SU_DISABLE, er_su_disable) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_MIMO_RESOUND, resound_recommendation) |
+	      FIELD_PREP(ATH11K_XMIT_OMI_UL_MU_DATA_DIS, ul_mu_data_disable);
+
+	ret = ath11k_wmi_set_peer_param(arsta->arvif->ar, sta->addr,
+					arsta->arvif->vdev_id,
+					WMI_PEER_PARAM_XMIT_OMI,
+					val);
+	return ret ? ret : count;
+}
+
+static const struct file_operations fops_write_xmit_omi = {
+	.write = ath11k_dbg_sta_write_xmit_omi,
+	.open = simple_open
+};
+
 void ath11k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			    struct ieee80211_sta *sta, struct dentry *dir)
 {
@@ -543,4 +589,5 @@ void ath11k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 
 	debugfs_create_file("peer_pktlog", 0644, dir, sta,
 			    &fops_peer_pktlog);
+	debugfs_create_file("xmit_omi", 0644, dir, sta, &fops_write_xmit_omi);
 }
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index ba08a7d95764..425fdd46e529 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -99,6 +99,8 @@ static const struct wmi_tlv_policy wmi_tlv_policies[] = {
 		= { .min_len = sizeof(struct wmi_pdev_ctl_failsafe_chk_event) },
 	[WMI_TAG_TWT_ADD_DIALOG_COMPLETE_EVENT]
 		= { .min_len = sizeof(struct wmi_twt_add_dialog_event) },
+	[WMI_TAG_PEER_OPER_MODE_CHANGE_EVENT]
+		= { .min_len = sizeof(struct wmi_peer_oper_mode_change_event) },
 };
 
 #define PRIMAP(_hw_mode_) \
@@ -5695,6 +5697,33 @@ static void ath11k_wmi_twt_add_dialog_event(struct ath11k_base *ab, struct sk_bu
 	kfree(tb);
 }
 
+static void ath11k_wmi_peer_oper_mode_change_event(struct ath11k_base *ab, struct sk_buff *skb)
+{
+	const void **tb;
+	const struct wmi_peer_oper_mode_change_event *ev;
+	int ret;
+
+	tb = ath11k_wmi_tlv_parse_alloc(ab, skb->data, skb->len, GFP_ATOMIC);
+	if (IS_ERR(tb)) {
+		ret = PTR_ERR(tb);
+		ath11k_warn(ab, "failed to parse tlv: %d\n", ret);
+		return;
+	}
+
+	ev = tb[WMI_TAG_PEER_OPER_MODE_CHANGE_EVENT];
+	if (!ev) {
+		ath11k_warn(ab, "failed to fetch peer oper mode change ev");
+		goto exit;
+	}
+
+	ath11k_dbg(ab, ATH11K_DBG_WMI,
+		   "OMI Change Event - ind: %ds, rxnss: %d, bw: %d, txnss: %d, disablemu: %d\n",
+		   ev->ind_type, ev->new_rxnss, ev->new_bw, ev->new_txnss, ev->new_disablemu);
+
+exit:
+	kfree(tb);
+}
+
 static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
 {
 	struct wmi_cmd_hdr *cmd_hdr;
@@ -5775,10 +5804,12 @@ static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
 	case WMI_TWT_ADD_DIALOG_EVENTID:
 		ath11k_wmi_twt_add_dialog_event(ab, skb);
 		break;
+	case WMI_PEER_OPER_MODE_CHANGE_EVENTID:
+		ath11k_wmi_peer_oper_mode_change_event(ab, skb);
+		break;
 	/* add Unsupported events here */
 	case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID:
 	case WMI_VDEV_DELETE_RESP_EVENTID:
-	case WMI_PEER_OPER_MODE_CHANGE_EVENTID:
 	case WMI_TWT_ENABLE_EVENTID:
 	case WMI_TWT_DISABLE_EVENTID:
 	case WMI_TWT_DEL_DIALOG_EVENTID:
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 6e0be33bd37c..f8823766fc1c 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -2004,6 +2004,7 @@ enum {
 #define WMI_PEER_SET_MAX_TX_RATE                        0x11
 #define WMI_PEER_SET_MIN_TX_RATE                        0x12
 #define WMI_PEER_SET_DEFAULT_ROUTING                    0x13
+#define WMI_PEER_PARAM_XMIT_OMI				0x1c
 
 /* slot time long */
 #define WMI_VDEV_SLOT_TIME_LONG         0x1
@@ -4684,6 +4685,15 @@ struct wmi_obss_spatial_reuse_params_cmd {
 	u32 vdev_id;
 };
 
+struct wmi_peer_oper_mode_change_event {
+	struct wmi_mac_addr peer_macaddr;
+	u32 ind_type;
+	u32 new_rxnss;
+	u32 new_bw;
+	u32 new_txnss;
+	u32 new_disablemu;
+};
+
 struct target_resource_config {
 	u32 num_vdevs;
 	u32 num_peers;
-- 
2.20.1


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2019-12-04 16:25 [PATCH] ath11k: add OMI debug support John Crispin
2019-12-05  4:57 ` vthiagar

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