ath10k: cleanup copy engine send completion

The physical address necessary to unmap DMA ('bufferp') is stored
in ath10k_skb_cb as 'paddr'. ath10k doesn't rely on the meta/transfer_id
when handling send completion (htc ep id is stored in sk_buff control
buffer). So the unused output arguments {bufferp, nbytesp and transfer_idp}
are removed from CE send completion. This change is needed before removing
the shadow copy of copy engine (CE) descriptors in follow up patch.

Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

3 files changed, 12 insertions, 50 deletions

diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
index f63376b3e258..52021a9d28d7 100644
--- a/drivers/net/wireless/ath/ath10k/ce.c
+++ b/drivers/net/wireless/ath/ath10k/ce.c
@@ -578,17 +578,13 @@ int ath10k_ce_revoke_recv_next(struct ath10k_ce_pipe *ce_state,
  * The caller takes responsibility for any necessary locking.
  */
 int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
-                                         void **per_transfer_contextp,
-                                         u32 *bufferp,
-                                         unsigned int *nbytesp,
-                                         unsigned int *transfer_idp)
+                                         void **per_transfer_contextp)
 {
         struct ath10k_ce_ring *src_ring = ce_state->src_ring;
         u32 ctrl_addr = ce_state->ctrl_addr;
         struct ath10k *ar = ce_state->ar;
         unsigned int nentries_mask = src_ring->nentries_mask;
         unsigned int sw_index = src_ring->sw_index;
-        struct ce_desc *sdesc, *sbase;
         unsigned int read_index;
 
         if (src_ring->hw_index == sw_index) {
@@ -613,15 +609,6 @@ int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
         if (read_index == sw_index)
                 return -EIO;
 
-        sbase = src_ring->base_addr_owner_space;
-        sdesc = CE_SRC_RING_TO_DESC(sbase, sw_index);
-
-        /* Return data from completed source descriptor */
-        *bufferp = __le32_to_cpu(sdesc->addr);
-        *nbytesp = __le16_to_cpu(sdesc->nbytes);
-        *transfer_idp = MS(__le16_to_cpu(sdesc->flags),
-                           CE_DESC_FLAGS_META_DATA);
-
         if (per_transfer_contextp)
                 *per_transfer_contextp =
                         src_ring->per_transfer_context[sw_index];
@@ -696,10 +683,7 @@ int ath10k_ce_cancel_send_next(struct ath10k_ce_pipe *ce_state,
 }
 
 int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
-                                  void **per_transfer_contextp,
-                                  u32 *bufferp,
-                                  unsigned int *nbytesp,
-                                  unsigned int *transfer_idp)
+                                  void **per_transfer_contextp)
 {
         struct ath10k *ar = ce_state->ar;
         struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
@@ -707,9 +691,7 @@ int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
 
         spin_lock_bh(&ar_pci->ce_lock);
         ret = ath10k_ce_completed_send_next_nolock(ce_state,
-                                                   per_transfer_contextp,
-                                                   bufferp, nbytesp,
-                                                   transfer_idp);
+                                                   per_transfer_contextp);
         spin_unlock_bh(&ar_pci->ce_lock);
 
         return ret;
diff --git a/drivers/net/wireless/ath/ath10k/ce.h b/drivers/net/wireless/ath/ath10k/ce.h
index dbb94fdb274b..67f90ec5de53 100644
--- a/drivers/net/wireless/ath/ath10k/ce.h
+++ b/drivers/net/wireless/ath/ath10k/ce.h
@@ -192,16 +192,10 @@ int ath10k_ce_completed_recv_next(struct ath10k_ce_pipe *ce_state,
  * Pops 1 completed send buffer from Source ring.
  */
 int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
-                                  void **per_transfer_contextp,
-                                  u32 *bufferp,
-                                  unsigned int *nbytesp,
-                                  unsigned int *transfer_idp);
+                                  void **per_transfer_contextp);
 
 int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
-                                         void **per_transfer_contextp,
-                                         u32 *bufferp,
-                                         unsigned int *nbytesp,
-                                         unsigned int *transfer_idp);
+                                         void **per_transfer_contextp);
 
 /*==================CE Engine Initialization=======================*/
 
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index 6f3c3e0ad907..81000257bc1d 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -910,9 +910,8 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
                         goto done;
 
                 i = 0;
-                while (ath10k_ce_completed_send_next_nolock(ce_diag, NULL, &buf,
-                                                            &completed_nbytes,
-                                                            &id) != 0) {
+                while (ath10k_ce_completed_send_next_nolock(ce_diag,
+                                                            NULL) != 0) {
                         mdelay(1);
                         if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
                                 ret = -EBUSY;
@@ -1073,9 +1072,8 @@ static int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
                         goto done;
 
                 i = 0;
-                while (ath10k_ce_completed_send_next_nolock(ce_diag, NULL, &buf,
-                                                            &completed_nbytes,
-                                                            &id) != 0) {
+                while (ath10k_ce_completed_send_next_nolock(ce_diag,
+                                                            NULL) != 0) {
                         mdelay(1);
 
                         if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
@@ -1139,13 +1137,9 @@ static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
         struct ath10k *ar = ce_state->ar;
         struct sk_buff_head list;
         struct sk_buff *skb;
-        u32 ce_data;
-        unsigned int nbytes;
-        unsigned int transfer_id;
 
         __skb_queue_head_init(&list);
-        while (ath10k_ce_completed_send_next(ce_state, (void **)&skb, &ce_data,
-                                             &nbytes, &transfer_id) == 0) {
+        while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
                 /* no need to call tx completion for NULL pointers */
                 if (skb == NULL)
                         continue;
@@ -1215,12 +1209,8 @@ static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
 {
         struct ath10k *ar = ce_state->ar;
         struct sk_buff *skb;
-        u32 ce_data;
-        unsigned int nbytes;
-        unsigned int transfer_id;
 
-        while (ath10k_ce_completed_send_next(ce_state, (void **)&skb, &ce_data,
-                                             &nbytes, &transfer_id) == 0) {
+        while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
                 /* no need to call tx completion for NULL pointers */
                 if (!skb)
                         continue;
@@ -1796,12 +1786,8 @@ err_dma:
 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
 {
         struct bmi_xfer *xfer;
-        u32 ce_data;
-        unsigned int nbytes;
-        unsigned int transfer_id;
 
-        if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer, &ce_data,
-                                          &nbytes, &transfer_id))
+        if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
                 return;
 
         xfer->tx_done = true;