165 lines
5.6 KiB
Diff
165 lines
5.6 KiB
Diff
From: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
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Date: Fri, 23 Oct 2015 18:01:05 +0530
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Subject: [PATCH] ath10k: cleanup copy engine send completion
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The physical address necessary to unmap DMA ('bufferp') is stored
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in ath10k_skb_cb as 'paddr'. ath10k doesn't rely on the meta/transfer_id
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when handling send completion (htc ep id is stored in sk_buff control
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buffer). So the unused output arguments {bufferp, nbytesp and transfer_idp}
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are removed from CE send completion. This change is needed before removing
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the shadow copy of copy engine (CE) descriptors in follow up patch.
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Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
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Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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---
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--- a/drivers/net/wireless/ath/ath10k/ce.c
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+++ b/drivers/net/wireless/ath/ath10k/ce.c
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@@ -578,17 +578,13 @@ int ath10k_ce_revoke_recv_next(struct at
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* The caller takes responsibility for any necessary locking.
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*/
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int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
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- void **per_transfer_contextp,
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- u32 *bufferp,
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- unsigned int *nbytesp,
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- unsigned int *transfer_idp)
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+ void **per_transfer_contextp)
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{
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struct ath10k_ce_ring *src_ring = ce_state->src_ring;
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u32 ctrl_addr = ce_state->ctrl_addr;
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struct ath10k *ar = ce_state->ar;
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unsigned int nentries_mask = src_ring->nentries_mask;
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unsigned int sw_index = src_ring->sw_index;
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- struct ce_desc *sdesc, *sbase;
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unsigned int read_index;
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if (src_ring->hw_index == sw_index) {
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@@ -613,15 +609,6 @@ int ath10k_ce_completed_send_next_nolock
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if (read_index == sw_index)
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return -EIO;
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- sbase = src_ring->base_addr_owner_space;
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- sdesc = CE_SRC_RING_TO_DESC(sbase, sw_index);
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-
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- /* Return data from completed source descriptor */
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- *bufferp = __le32_to_cpu(sdesc->addr);
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- *nbytesp = __le16_to_cpu(sdesc->nbytes);
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- *transfer_idp = MS(__le16_to_cpu(sdesc->flags),
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- CE_DESC_FLAGS_META_DATA);
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-
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if (per_transfer_contextp)
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*per_transfer_contextp =
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src_ring->per_transfer_context[sw_index];
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@@ -696,10 +683,7 @@ int ath10k_ce_cancel_send_next(struct at
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}
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int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
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- void **per_transfer_contextp,
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- u32 *bufferp,
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- unsigned int *nbytesp,
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- unsigned int *transfer_idp)
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+ void **per_transfer_contextp)
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{
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struct ath10k *ar = ce_state->ar;
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struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
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@@ -707,9 +691,7 @@ int ath10k_ce_completed_send_next(struct
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spin_lock_bh(&ar_pci->ce_lock);
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ret = ath10k_ce_completed_send_next_nolock(ce_state,
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- per_transfer_contextp,
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- bufferp, nbytesp,
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- transfer_idp);
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+ per_transfer_contextp);
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spin_unlock_bh(&ar_pci->ce_lock);
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return ret;
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--- a/drivers/net/wireless/ath/ath10k/ce.h
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+++ b/drivers/net/wireless/ath/ath10k/ce.h
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@@ -192,16 +192,10 @@ int ath10k_ce_completed_recv_next(struct
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* Pops 1 completed send buffer from Source ring.
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*/
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int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
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- void **per_transfer_contextp,
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- u32 *bufferp,
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- unsigned int *nbytesp,
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- unsigned int *transfer_idp);
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+ void **per_transfer_contextp);
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int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
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- void **per_transfer_contextp,
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- u32 *bufferp,
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- unsigned int *nbytesp,
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- unsigned int *transfer_idp);
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+ void **per_transfer_contextp);
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/*==================CE Engine Initialization=======================*/
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--- a/drivers/net/wireless/ath/ath10k/pci.c
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+++ b/drivers/net/wireless/ath/ath10k/pci.c
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@@ -910,9 +910,8 @@ static int ath10k_pci_diag_read_mem(stru
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goto done;
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i = 0;
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- while (ath10k_ce_completed_send_next_nolock(ce_diag, NULL, &buf,
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- &completed_nbytes,
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- &id) != 0) {
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+ while (ath10k_ce_completed_send_next_nolock(ce_diag,
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+ NULL) != 0) {
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mdelay(1);
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if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
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ret = -EBUSY;
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@@ -1073,9 +1072,8 @@ static int ath10k_pci_diag_write_mem(str
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goto done;
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i = 0;
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- while (ath10k_ce_completed_send_next_nolock(ce_diag, NULL, &buf,
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- &completed_nbytes,
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- &id) != 0) {
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+ while (ath10k_ce_completed_send_next_nolock(ce_diag,
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+ NULL) != 0) {
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mdelay(1);
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if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
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@@ -1139,13 +1137,9 @@ static void ath10k_pci_htc_tx_cb(struct
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struct ath10k *ar = ce_state->ar;
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struct sk_buff_head list;
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struct sk_buff *skb;
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- u32 ce_data;
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- unsigned int nbytes;
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- unsigned int transfer_id;
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__skb_queue_head_init(&list);
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- while (ath10k_ce_completed_send_next(ce_state, (void **)&skb, &ce_data,
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- &nbytes, &transfer_id) == 0) {
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+ while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
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/* no need to call tx completion for NULL pointers */
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if (skb == NULL)
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continue;
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@@ -1215,12 +1209,8 @@ static void ath10k_pci_htt_tx_cb(struct
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{
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struct ath10k *ar = ce_state->ar;
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struct sk_buff *skb;
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- u32 ce_data;
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- unsigned int nbytes;
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- unsigned int transfer_id;
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- while (ath10k_ce_completed_send_next(ce_state, (void **)&skb, &ce_data,
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- &nbytes, &transfer_id) == 0) {
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+ while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
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/* no need to call tx completion for NULL pointers */
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if (!skb)
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continue;
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@@ -1796,12 +1786,8 @@ err_dma:
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static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
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{
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struct bmi_xfer *xfer;
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- u32 ce_data;
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- unsigned int nbytes;
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- unsigned int transfer_id;
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- if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer, &ce_data,
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- &nbytes, &transfer_id))
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+ if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
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return;
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xfer->tx_done = true;
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