qcacmn: Add HTC Credit History Feature flag

Add compilation flag to compile out HTC credit History
feature cleanly from the cld-3.2 driver binary

Change-Id: I615f0e4d6de150924b99b3444cebf00571ddc088
CRs-Fixed: 2190546

htc/htc.c

@@ -27,6 +27,7 @@
 
 #include "htc_debug.h"
 #include "htc_internal.h"
+#include "htc_credit_history.h"
 #include <hif.h>
 #include <qdf_nbuf.h>           /* qdf_nbuf_t */
 #include <qdf_types.h>          /* qdf_print */
@@ -274,10 +275,10 @@ HTC_HANDLE htc_create(void *ol_sc, struct htc_init_info *pInfo,
 	}
 
 	htc_runtime_pm_init(target);
+	htc_credit_history_init();
 	qdf_spinlock_create(&target->HTCLock);
 	qdf_spinlock_create(&target->HTCRxLock);
 	qdf_spinlock_create(&target->HTCTxLock);
-	qdf_spinlock_create(&target->HTCCreditLock);
 	for (i = 0; i < ENDPOINT_MAX; i++) {
 		pEndpoint = &target->endpoint[i];
 		qdf_spinlock_create(&pEndpoint->lookup_queue_lock);

htc/htc_api.h

@@ -815,9 +815,24 @@ void htc_set_wmi_endpoint_count(HTC_HANDLE htc_handle, uint8_t wmi_ep_count);
  */
 uint8_t  htc_get_wmi_endpoint_count(HTC_HANDLE htc_handle);
 
-#ifdef WMI_INTERFACE_EVENT_LOGGING
+/**
+ * htc_print_credit_history: print HTC credit history in buffer
+ * @htc:        HTC handle
+ * @count:      Number of lines to be copied
+ * @print:      Print callback to print in the buffer
+ * @print_priv: any data required by the print method, e.g. a file handle
+ *
+ * return: None
+ */
+#ifdef FEATURE_HTC_CREDIT_HISTORY
 void htc_print_credit_history(HTC_HANDLE htc, uint32_t count,
 			      qdf_abstract_print * print, void *print_priv);
+#else
+static inline
+void htc_print_credit_history(HTC_HANDLE htc, uint32_t count,
+			      qdf_abstract_print *print, void *print_priv)
+{
+	print(print_priv, "HTC Credit History Feature is disabled");
+}
 #endif
-
 #endif /* _HTC_API_H_ */

htc/htc_credit_history.c

@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2018 The Linux Foundation. All rights reserved.
+ *
+ * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
+ *
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This file was originally distributed by Qualcomm Atheros, Inc.
+ * under proprietary terms before Copyright ownership was assigned
+ * to the Linux Foundation.
+ */
+
+#include "htc_debug.h"
+#include "htc_internal.h"
+#include "htc_credit_history.h"
+#include <qdf_lock.h>
+
+struct HTC_CREDIT_HISTORY {
+	enum htc_credit_exchange_type type;
+	uint64_t time;
+	uint32_t tx_credit;
+	uint32_t htc_tx_queue_depth;
+};
+
+static qdf_spinlock_t g_htc_credit_lock;
+static uint32_t g_htc_credit_history_idx;
+static uint32_t g_htc_credit_history_length;
+static
+struct HTC_CREDIT_HISTORY htc_credit_history_buffer[HTC_CREDIT_HISTORY_MAX];
+
+
+#ifdef QCA_WIFI_NAPIER_EMULATION
+#define HTC_EMULATION_DELAY_IN_MS 20
+/**
+ * htc_add_delay(): Adds a delay in before proceeding, only for emulation
+ *
+ * Return: None
+ */
+static inline void htc_add_emulation_delay(void)
+{
+	qdf_mdelay(HTC_EMULATION_DELAY_IN_MS);
+}
+#else
+static inline void htc_add_emulation_delay(void)
+{
+}
+#endif
+
+void htc_credit_history_init(void)
+{
+	qdf_spinlock_create(&g_htc_credit_lock);
+	g_htc_credit_history_idx = 0;
+	g_htc_credit_history_length = 0;
+}
+
+/**
+ * htc_credit_record() - records tx que state & credit transactions
+ * @type:		type of echange can be HTC_REQUEST_CREDIT
+ *			or HTC_PROCESS_CREDIT_REPORT
+ * @tx_credits:		current number of tx_credits
+ * @htc_tx_queue_depth:	current hct tx queue depth
+ *
+ * This function records the credits and pending commands whenever a command is
+ * sent or credits are returned.  Call this after the credits have been updated
+ * according to the transaction.  Call this before dequeing commands.
+ *
+ * Consider making this function accept an HTC_ENDPOINT and find the current
+ * credits and queue depth itself.
+ *
+ */
+void htc_credit_record(enum htc_credit_exchange_type type, uint32_t tx_credit,
+		       uint32_t htc_tx_queue_depth)
+{
+	qdf_spin_lock_bh(&g_htc_credit_lock);
+	if (g_htc_credit_history_idx >= HTC_CREDIT_HISTORY_MAX)
+		g_htc_credit_history_idx = 0;
+
+	htc_credit_history_buffer[g_htc_credit_history_idx].type = type;
+	htc_credit_history_buffer[g_htc_credit_history_idx].time =
+		qdf_get_log_timestamp();
+	htc_credit_history_buffer[g_htc_credit_history_idx].tx_credit =
+		tx_credit;
+	htc_credit_history_buffer[g_htc_credit_history_idx].htc_tx_queue_depth =
+		htc_tx_queue_depth;
+
+	g_htc_credit_history_idx++;
+	g_htc_credit_history_length++;
+	htc_add_emulation_delay();
+	qdf_spin_unlock_bh(&g_htc_credit_lock);
+}
+
+void htc_print_credit_history(HTC_HANDLE htc, uint32_t count,
+			      qdf_abstract_print *print, void *print_priv)
+{
+	uint32_t idx;
+
+	print(print_priv, "HTC Credit History (count %u)", count);
+	qdf_spin_lock_bh(&g_htc_credit_lock);
+
+	if (count > HTC_CREDIT_HISTORY_MAX)
+		count = HTC_CREDIT_HISTORY_MAX;
+	if (count > g_htc_credit_history_length)
+		count = g_htc_credit_history_length;
+
+	/* subtract count from index, and wrap if necessary */
+	idx = HTC_CREDIT_HISTORY_MAX + g_htc_credit_history_idx - count;
+	idx %= HTC_CREDIT_HISTORY_MAX;
+
+	print(print_priv,
+	      "Time (seconds)     Type                         Credits    Queue Depth");
+	while (count) {
+		struct HTC_CREDIT_HISTORY *hist =
+						&htc_credit_history_buffer[idx];
+		uint64_t secs, usecs;
+
+		qdf_log_timestamp_to_secs(hist->time, &secs, &usecs);
+		print(print_priv, "% 8lld.%06lld    %-25s    %-7.d    %d",
+		      secs,
+		      usecs,
+		      htc_credit_exchange_type_str(hist->type),
+		      hist->tx_credit,
+		      hist->htc_tx_queue_depth);
+
+		--count;
+		++idx;
+		if (idx >= HTC_CREDIT_HISTORY_MAX)
+			idx = 0;
+	}
+
+	qdf_spin_unlock_bh(&g_htc_credit_lock);
+}

htc/htc_credit_history.h

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018 The Linux Foundation. All rights reserved.
+ *
+ * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
+ *
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This file was originally distributed by Qualcomm Atheros, Inc.
+ * under proprietary terms before Copyright ownership was assigned
+ * to the Linux Foundation.
+ */
+
+#ifndef _HTC_CREDIT_HISTORY_H_
+#define _HTC_CREDIT_HISTORY_H_
+
+#include "htc_internal.h"
+
+#ifdef FEATURE_HTC_CREDIT_HISTORY
+
+/**
+ * htc_credit_history_init(): Init helper function to initialize HTC credit
+ *                            history buffers and variable.
+ * Return: None
+ */
+
+void htc_credit_history_init(void);
+void htc_credit_record(enum htc_credit_exchange_type type, uint32_t tx_credit,
+			uint32_t htc_tx_queue_depth);
+
+#else /* FEATURE_HTC_CREDIT_HISTORY */
+
+static inline
+void htc_credit_history_init(void)
+{
+}
+
+static inline
+void htc_credit_record(enum htc_credit_exchange_type type, uint32_t tx_credit,
+			uint32_t htc_tx_queue_depth)
+{ }
+#endif /* FEATURE_HTC_CREDIT_HISTORY */
+#endif /* _HTC_CREDIT_HISTORY_H_ */

htc/htc_internal.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2018 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -118,13 +118,6 @@ htc_credit_exchange_type_str(enum htc_credit_exchange_type type)
 	}
 }
 
-struct HTC_CREDIT_HISTORY {
-	enum htc_credit_exchange_type type;
-	uint64_t time;
-	uint32_t tx_credit;
-	uint32_t htc_tx_queue_depth;
-};
-
 typedef struct _HTC_ENDPOINT {
 	HTC_ENDPOINT_ID Id;
 
@@ -275,8 +268,6 @@ do { \
 #define UNLOCK_HTC_RX(t)           qdf_spin_unlock_bh(&(t)->HTCRxLock)
 #define LOCK_HTC_TX(t)             qdf_spin_lock_bh(&(t)->HTCTxLock)
 #define UNLOCK_HTC_TX(t)           qdf_spin_unlock_bh(&(t)->HTCTxLock)
-#define LOCK_HTC_CREDIT(t)         qdf_spin_lock_bh(&(t)->HTCCreditLock)
-#define UNLOCK_HTC_CREDIT(t)       qdf_spin_unlock_bh(&(t)->HTCCreditLock)
 #define LOCK_HTC_EP_TX_LOOKUP(t)   qdf_spin_lock_bh(&(t)->lookup_queue_lock)
 #define UNLOCK_HTC_EP_TX_LOOKUP(t) qdf_spin_unlock_bh(&(t)->lookup_queue_lock)
 
@@ -328,9 +319,6 @@ void htc_send_complete_check_cleanup(void *context);
 void htc_kick_queues(void *context);
 #endif
 
-void htc_credit_record(enum htc_credit_exchange_type type, uint32_t tx_credit,
-		       uint32_t htc_tx_queue_depth);
-
 static inline void htc_send_complete_poll_timer_stop(HTC_ENDPOINT *
 						     pEndpoint) {
 	LOCK_HTC_TX(pEndpoint->target);

htc/htc_recv.c

@@ -27,6 +27,7 @@
 
 #include "htc_debug.h"
 #include "htc_internal.h"
+#include "htc_credit_history.h"
 #include <qdf_nbuf.h>           /* qdf_nbuf_t */
 
 /* HTC Control message receive timeout msec */
@@ -428,12 +429,10 @@ QDF_STATUS htc_rx_completion_handler(void *Context, qdf_nbuf_t netbuf,
 			case HTC_MSG_WAKEUP_FROM_SUSPEND_ID:
 				AR_DEBUG_PRINTF(ATH_DEBUG_ANY,
 					("Received initial wake up"));
-				LOCK_HTC_CREDIT(target);
 				htc_credit_record(HTC_INITIAL_WAKE_UP,
 					pEndpoint->TxCredits,
 					HTC_PACKET_QUEUE_DEPTH(
 					&pEndpoint->TxQueue));
-				UNLOCK_HTC_CREDIT(target);
 				info = &target->HTCInitInfo;
 				if (info && info->target_initial_wakeup_cb)
 					info->target_initial_wakeup_cb(
@@ -445,12 +444,10 @@ QDF_STATUS htc_rx_completion_handler(void *Context, qdf_nbuf_t netbuf,
 #endif
 			case HTC_MSG_SEND_SUSPEND_COMPLETE:
 				wow_nack = false;
-				LOCK_HTC_CREDIT(target);
 				htc_credit_record(HTC_SUSPEND_ACK,
 					pEndpoint->TxCredits,
 					HTC_PACKET_QUEUE_DEPTH(
 					&pEndpoint->TxQueue));
-				UNLOCK_HTC_CREDIT(target);
 				target->HTCInitInfo.TargetSendSuspendComplete(
 					target->HTCInitInfo.target_psoc,
 					wow_nack);
@@ -458,13 +455,10 @@ QDF_STATUS htc_rx_completion_handler(void *Context, qdf_nbuf_t netbuf,
 				break;
 			case HTC_MSG_NACK_SUSPEND:
 				wow_nack = true;
-				LOCK_HTC_CREDIT(target);
 				htc_credit_record(HTC_SUSPEND_ACK,
 					pEndpoint->TxCredits,
 					HTC_PACKET_QUEUE_DEPTH(
 					&pEndpoint->TxQueue));
-				UNLOCK_HTC_CREDIT(target);
-
 				target->HTCInitInfo.TargetSendSuspendComplete(
 					target->HTCInitInfo.target_psoc,
 					wow_nack);

htc/htc_send.c

@@ -27,6 +27,7 @@
 
 #include "htc_debug.h"
 #include "htc_internal.h"
+#include "htc_credit_history.h"
 #include <qdf_mem.h>            /* qdf_mem_malloc */
 #include <qdf_nbuf.h>           /* qdf_nbuf_t */
 #include "qdf_module.h"
@@ -53,11 +54,6 @@ static unsigned int ep_debug_mask =
 	(1 << ENDPOINT_0) | (1 << ENDPOINT_1) | (1 << ENDPOINT_2);
 #endif
 
-/* HTC Control Path Credit History */
-uint32_t g_htc_credit_history_idx;
-uint32_t g_htc_credit_history_length;
-struct HTC_CREDIT_HISTORY htc_credit_history_buffer[HTC_CREDIT_HISTORY_MAX];
-
 #ifdef QCA_WIFI_NAPIER_EMULATION
 #define HTC_EMULATION_DELAY_IN_MS 20
 /**
@@ -75,84 +71,6 @@ static inline void htc_add_emulation_delay(void)
 }
 #endif
 
-/**
- * htc_credit_record() - records tx que state & credit transactions
- * @type:		type of echange can be HTC_REQUEST_CREDIT
- *			or HTC_PROCESS_CREDIT_REPORT
- * @tx_credits:		current number of tx_credits
- * @htc_tx_queue_depth:	current hct tx queue depth
- *
- * This function records the credits and pending commands whenever a command is
- * sent or credits are returned.  Call this after the credits have been updated
- * according to the transaction.  Call this before dequeing commands.
- *
- * Consider making this function accept an HTC_ENDPOINT and find the current
- * credits and queue depth itself.
- *
- * Consider moving the LOCK_HTC_CREDIT(target); logic into this func as well
- */
-void htc_credit_record(enum htc_credit_exchange_type type, uint32_t tx_credit,
-		       uint32_t htc_tx_queue_depth) {
-	if (HTC_CREDIT_HISTORY_MAX <= g_htc_credit_history_idx)
-		g_htc_credit_history_idx = 0;
-
-	htc_credit_history_buffer[g_htc_credit_history_idx].type = type;
-	htc_credit_history_buffer[g_htc_credit_history_idx].time =
-		qdf_get_log_timestamp();
-	htc_credit_history_buffer[g_htc_credit_history_idx].tx_credit =
-		tx_credit;
-	htc_credit_history_buffer[g_htc_credit_history_idx].htc_tx_queue_depth =
-		htc_tx_queue_depth;
-
-	g_htc_credit_history_idx++;
-	g_htc_credit_history_length++;
-	htc_add_emulation_delay();
-}
-
-#ifdef WMI_INTERFACE_EVENT_LOGGING
-void htc_print_credit_history(HTC_HANDLE htc, uint32_t count,
-			      qdf_abstract_print *print, void *print_priv)
-{
-	uint32_t idx;
-	HTC_TARGET *target;
-
-	target = GET_HTC_TARGET_FROM_HANDLE(htc);
-	LOCK_HTC_CREDIT(target);
-
-	if (count > HTC_CREDIT_HISTORY_MAX)
-		count = HTC_CREDIT_HISTORY_MAX;
-	if (count > g_htc_credit_history_length)
-		count = g_htc_credit_history_length;
-
-	/* subtract count from index, and wrap if necessary */
-	idx = HTC_CREDIT_HISTORY_MAX + g_htc_credit_history_idx - count;
-	idx %= HTC_CREDIT_HISTORY_MAX;
-
-	print(print_priv,
-	      "Time (seconds)     Type                         Credits    Queue Depth");
-	while (count) {
-		struct HTC_CREDIT_HISTORY *hist =
-						&htc_credit_history_buffer[idx];
-		uint64_t secs, usecs;
-
-		qdf_log_timestamp_to_secs(hist->time, &secs, &usecs);
-		print(print_priv, "% 8lld.%06lld    %-25s    %-7.d    %d",
-		      secs,
-		      usecs,
-		      htc_credit_exchange_type_str(hist->type),
-		      hist->tx_credit,
-		      hist->htc_tx_queue_depth);
-
-		--count;
-		++idx;
-		if (idx >= HTC_CREDIT_HISTORY_MAX)
-			idx = 0;
-	}
-
-	UNLOCK_HTC_CREDIT(target);
-}
-#endif /* WMI_INTERFACE_EVENT_LOGGING */
-
 void htc_dump_counter_info(HTC_HANDLE HTCHandle)
 {
 	HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
@@ -909,16 +827,12 @@ static void get_htc_send_packets_credit_based(HTC_TARGET *target,
 			    pEndpoint->TxCreditsPerMaxMsg) {
 				/* tell the target we need credits ASAP! */
 				sendFlags |= HTC_FLAGS_NEED_CREDIT_UPDATE;
-
 				if (pEndpoint->service_id == WMI_CONTROL_SVC) {
-					LOCK_HTC_CREDIT(target);
 					htc_credit_record(HTC_REQUEST_CREDIT,
 							  pEndpoint->TxCredits,
 							  HTC_PACKET_QUEUE_DEPTH
 							  (tx_queue));
-					UNLOCK_HTC_CREDIT(target);
 				}
-
 				INC_HTC_EP_STAT(pEndpoint,
 						TxCreditLowIndications, 1);
 #if DEBUG_CREDIT
@@ -2241,16 +2155,12 @@ void htc_process_credit_rpt(HTC_TARGET *target, HTC_CREDIT_REPORT *pRpt,
 #endif
 
 		pEndpoint->TxCredits += rpt_credits;
-
 		if (pEndpoint->service_id == WMI_CONTROL_SVC) {
-			LOCK_HTC_CREDIT(target);
 			htc_credit_record(HTC_PROCESS_CREDIT_REPORT,
 					  pEndpoint->TxCredits,
 					  HTC_PACKET_QUEUE_DEPTH(&pEndpoint->
 							TxQueue));
-			UNLOCK_HTC_CREDIT(target);
 		}
-
 		if (pEndpoint->TxCredits
 		    && HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue)) {
 			UNLOCK_HTC_TX(target);