qcacld-2.0: debug info for full reorder offload

Log last 1K physical addresses and corresponding virtual addresses of the
Rx buffers.

Change-Id: I2bb4502fdd92b362199b579ec3cceaa691d4691f
CRs-Fixed: 864569

3 files changed, 57 insertions, 0 deletions

diff --git a/CORE/CLD_TXRX/HTT/htt_rx.c b/CORE/CLD_TXRX/HTT/htt_rx.c
index 267f79370676..24e48b9abc77 100644
--- a/CORE/CLD_TXRX/HTT/htt_rx.c
+++ b/CORE/CLD_TXRX/HTT/htt_rx.c
@@ -296,6 +296,16 @@ htt_rx_ring_fill_n(struct htt_pdev_t *pdev, int num)
                 adf_nbuf_free(rx_netbuf);
                 goto fail;
             }
+#ifdef DEBUG_RX_RING_BUFFER
+            if (pdev->rx_buff_list) {
+                pdev->rx_buff_list[pdev->rx_buff_index].paddr = paddr;
+                pdev->rx_buff_list[pdev->rx_buff_index].in_use = true;
+                pdev->rx_buff_list[pdev->rx_buff_index].vaddr = rx_netbuf;
+                NBUF_MAP_ID(rx_netbuf) = pdev->rx_buff_index;
+                if(++pdev->rx_buff_index == HTT_RX_RING_BUFF_DBG_LIST)
+                    pdev->rx_buff_index = 0;
+            }
+#endif
         } else {
             pdev->rx_ring.buf.netbufs_ring[idx] = rx_netbuf;
         }
@@ -2476,6 +2486,9 @@ htt_rx_hash_list_lookup(struct htt_pdev_t *pdev, u_int32_t paddr)
         HTT_RX_HASH_COOKIE_CHECK(hash_entry);
 
         if (hash_entry->paddr == paddr) {
+#ifdef DEBUG_RX_RING_BUFFER
+            uint32_t index;
+#endif
             /* Found the entry corresponding to paddr */
             netbuf = hash_entry->netbuf;
             htt_list_remove(&hash_entry->listnode);
@@ -2488,6 +2501,16 @@ htt_rx_hash_list_lookup(struct htt_pdev_t *pdev, u_int32_t paddr)
             else {
                 adf_os_mem_free(hash_entry);
             }
+#ifdef DEBUG_RX_RING_BUFFER
+            if (pdev->rx_buff_list) {
+                index = NBUF_MAP_ID(netbuf);
+                if (index < HTT_RX_RING_BUFF_DBG_LIST) {
+                    pdev->rx_buff_list[index].in_use = false;
+                    pdev->rx_buff_list[index].paddr = 0;
+                    pdev->rx_buff_list[index].vaddr = NULL;
+                }
+            }
+#endif
             break;
         }
     }
@@ -2722,6 +2745,14 @@ htt_rx_attach(struct htt_pdev_t *pdev)
         pdev->rx_ring.rx_reset = 0;
         pdev->rx_ring.htt_rx_restore = 0;
 #endif
+#ifdef DEBUG_RX_RING_BUFFER
+        pdev->rx_buff_list = adf_os_mem_alloc(pdev->osdev,
+                                         HTT_RX_RING_BUFF_DBG_LIST *
+                                         sizeof(struct rx_buf_debug));
+        if (!pdev->rx_buff_list) {
+            adf_os_print("HTT: debug RX buffer allocation failed\n");
+        }
+#endif
         htt_rx_ring_fill_n(pdev, pdev->rx_ring.fill_level);
 
         if (pdev->cfg.is_full_reorder_offload) {
diff --git a/CORE/CLD_TXRX/HTT/htt_types.h b/CORE/CLD_TXRX/HTT/htt_types.h
index 59780705fb1c..f4c3f2916e04 100644
--- a/CORE/CLD_TXRX/HTT/htt_types.h
+++ b/CORE/CLD_TXRX/HTT/htt_types.h
@@ -61,6 +61,9 @@
 #define HTT_TX_EXT_TID_INVALID             31
 #define HTT_TX_EXT_TID_NONPAUSE            19
 
+#ifdef DEBUG_RX_RING_BUFFER
+#define HTT_RX_RING_BUFF_DBG_LIST          1024
+#endif
 /**
  * @brief General specification of the tx frame contents
  *
@@ -197,6 +200,15 @@ struct htt_tx_credit_t
     adf_os_atomic_t target_delta;
 };
 
+#ifdef DEBUG_RX_RING_BUFFER
+struct rx_buf_debug {
+        uint32_t               paddr;
+        void *                 vaddr;
+        bool                   in_use;
+};
+#endif
+
+
 struct htt_pdev_t {
     ol_pdev_handle ctrl_pdev;
     ol_txrx_pdev_handle txrx_pdev;
@@ -353,6 +365,12 @@ struct htt_pdev_t {
 #endif /* IPA_UC_OFFLOAD */
 
     struct htt_tx_credit_t htt_tx_credit;
+
+#ifdef DEBUG_RX_RING_BUFFER
+    struct rx_buf_debug *rx_buff_list;
+    int rx_buff_index;
+#endif
+
 };
 
 #endif /* _HTT_TYPES__H_ */
diff --git a/CORE/SERVICES/COMMON/adf/linux/adf_nbuf_pvt.h b/CORE/SERVICES/COMMON/adf/linux/adf_nbuf_pvt.h
index 542540c7f5e1..d376f41ee903 100644
--- a/CORE/SERVICES/COMMON/adf/linux/adf_nbuf_pvt.h
+++ b/CORE/SERVICES/COMMON/adf/linux/adf_nbuf_pvt.h
@@ -78,6 +78,9 @@ struct cvg_nbuf_cb {
     union {
         struct sk_buff *parent;
         void *ptr;
+#ifdef DEBUG_RX_RING_BUFFER
+        uint32_t map_index;
+#endif
     } txrx_field;
 
     /*
@@ -128,6 +131,11 @@ struct cvg_nbuf_cb {
     (((struct cvg_nbuf_cb *)((skb)->cb))->txrx_field.ptr)
 #endif
 
+#ifdef DEBUG_RX_RING_BUFFER
+#define NBUF_MAP_ID(skb) \
+    (((struct cvg_nbuf_cb *)((skb)->cb))->txrx_field.map_index)
+#endif
+
 #ifdef QCA_MDM_DEVICE
 #define NBUF_OWNER_ID(skb) \
     (((struct cvg_nbuf_cb *)((skb)->cb))->owner_id)