From: Rajkumar Manoharan 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 Signed-off-by: Kalle Valo --- --- 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;