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-rw-r--r--package/kernel/mac80211/patches/308-ath10k-cleanup-copy-engine-send-completion.patch165
1 files changed, 165 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/308-ath10k-cleanup-copy-engine-send-completion.patch b/package/kernel/mac80211/patches/308-ath10k-cleanup-copy-engine-send-completion.patch
new file mode 100644
index 0000000..e758665
--- /dev/null
+++ b/package/kernel/mac80211/patches/308-ath10k-cleanup-copy-engine-send-completion.patch
@@ -0,0 +1,165 @@
+From: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
+Date: Fri, 23 Oct 2015 18:01:05 +0530
+Subject: [PATCH] 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>
+---
+
+--- 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 at
+ * 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
+ 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 at
+ }
+
+ 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
+
+ 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;
+--- 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
+ * 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=======================*/
+
+--- 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(stru
+ 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(str
+ 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
+ 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
+ {
+ 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;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 22:56:59 +0000