From 24d9ef5eff5057bb6339ed1cf852a2b2a7be324d Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Tue, 22 Mar 2016 17:22:17 +0530 Subject: [PATCH] ath10k: cleanup copy engine receive next completion The physical address necessary to unmap DMA ('bufferp') is stored in ath10k_skb_cb as 'paddr'. For diag register read and write operations, 'paddr' is stored in transfer context. ath10k doesn't rely on the meta/transfer_id. So the unused output arguments {bufferp, nbytesp and transfer_idp} are removed from CE recv_next completion. Signed-off-by: Rajkumar Manoharan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/ce.c | 21 ++----------- drivers/net/wireless/ath/ath10k/ce.h | 10 ++----- drivers/net/wireless/ath/ath10k/pci.c | 43 +++++++++++---------------- 3 files changed, 22 insertions(+), 52 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index edf3629288bc..d6da404c9fa7 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -444,14 +444,10 @@ int ath10k_ce_rx_post_buf(struct ath10k_ce_pipe *pipe, void *ctx, u32 paddr) */ int ath10k_ce_completed_recv_next_nolock(struct ath10k_ce_pipe *ce_state, void **per_transfer_contextp, - u32 *bufferp, - unsigned int *nbytesp, - unsigned int *transfer_idp, - unsigned int *flagsp) + unsigned int *nbytesp) { struct ath10k_ce_ring *dest_ring = ce_state->dest_ring; unsigned int nentries_mask = dest_ring->nentries_mask; - struct ath10k *ar = ce_state->ar; unsigned int sw_index = dest_ring->sw_index; struct ce_desc *base = dest_ring->base_addr_owner_space; @@ -476,14 +472,7 @@ int ath10k_ce_completed_recv_next_nolock(struct ath10k_ce_pipe *ce_state, desc->nbytes = 0; /* Return data from completed destination descriptor */ - *bufferp = __le32_to_cpu(sdesc.addr); *nbytesp = nbytes; - *transfer_idp = MS(__le16_to_cpu(sdesc.flags), CE_DESC_FLAGS_META_DATA); - - if (__le16_to_cpu(sdesc.flags) & CE_DESC_FLAGS_BYTE_SWAP) - *flagsp = CE_RECV_FLAG_SWAPPED; - else - *flagsp = 0; if (per_transfer_contextp) *per_transfer_contextp = @@ -501,10 +490,7 @@ int ath10k_ce_completed_recv_next_nolock(struct ath10k_ce_pipe *ce_state, int ath10k_ce_completed_recv_next(struct ath10k_ce_pipe *ce_state, void **per_transfer_contextp, - u32 *bufferp, - unsigned int *nbytesp, - unsigned int *transfer_idp, - unsigned int *flagsp) + unsigned int *nbytesp) { struct ath10k *ar = ce_state->ar; struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); @@ -513,8 +499,7 @@ int ath10k_ce_completed_recv_next(struct ath10k_ce_pipe *ce_state, spin_lock_bh(&ar_pci->ce_lock); ret = ath10k_ce_completed_recv_next_nolock(ce_state, per_transfer_contextp, - bufferp, nbytesp, - transfer_idp, flagsp); + nbytesp); 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 dac676817532..68717e5b9d89 100644 --- a/drivers/net/wireless/ath/ath10k/ce.h +++ b/drivers/net/wireless/ath/ath10k/ce.h @@ -177,10 +177,7 @@ int ath10k_ce_rx_post_buf(struct ath10k_ce_pipe *pipe, void *ctx, u32 paddr); */ int ath10k_ce_completed_recv_next(struct ath10k_ce_pipe *ce_state, void **per_transfer_contextp, - u32 *bufferp, - unsigned int *nbytesp, - unsigned int *transfer_idp, - unsigned int *flagsp); + unsigned int *nbytesp); /* * Supply data for the next completed unprocessed send descriptor. * Pops 1 completed send buffer from Source ring. @@ -212,10 +209,7 @@ int ath10k_ce_revoke_recv_next(struct ath10k_ce_pipe *ce_state, int ath10k_ce_completed_recv_next_nolock(struct ath10k_ce_pipe *ce_state, void **per_transfer_contextp, - u32 *bufferp, - unsigned int *nbytesp, - unsigned int *transfer_idp, - unsigned int *flagsp); + unsigned int *nbytesp); /* * Support clean shutdown by allowing the caller to cancel diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index b3cff1d3364a..290a61afde1a 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -870,10 +870,8 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, { struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); int ret = 0; - u32 buf; + u32 *buf; unsigned int completed_nbytes, orig_nbytes, remaining_bytes; - unsigned int id; - unsigned int flags; struct ath10k_ce_pipe *ce_diag; /* Host buffer address in CE space */ u32 ce_data; @@ -909,7 +907,7 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, nbytes = min_t(unsigned int, remaining_bytes, DIAG_TRANSFER_LIMIT); - ret = __ath10k_ce_rx_post_buf(ce_diag, NULL, ce_data); + ret = __ath10k_ce_rx_post_buf(ce_diag, &ce_data, ce_data); if (ret != 0) goto done; @@ -940,9 +938,10 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, } i = 0; - while (ath10k_ce_completed_recv_next_nolock(ce_diag, NULL, &buf, - &completed_nbytes, - &id, &flags) != 0) { + while (ath10k_ce_completed_recv_next_nolock(ce_diag, + (void **)&buf, + &completed_nbytes) + != 0) { mdelay(1); if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) { @@ -956,7 +955,7 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, goto done; } - if (buf != ce_data) { + if (*buf != ce_data) { ret = -EIO; goto done; } @@ -1026,10 +1025,8 @@ int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address, { struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); int ret = 0; - u32 buf; + u32 *buf; unsigned int completed_nbytes, orig_nbytes, remaining_bytes; - unsigned int id; - unsigned int flags; struct ath10k_ce_pipe *ce_diag; void *data_buf = NULL; u32 ce_data; /* Host buffer address in CE space */ @@ -1078,7 +1075,7 @@ int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address, nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT); /* Set up to receive directly into Target(!) address */ - ret = __ath10k_ce_rx_post_buf(ce_diag, NULL, address); + ret = __ath10k_ce_rx_post_buf(ce_diag, &address, address); if (ret != 0) goto done; @@ -1103,9 +1100,10 @@ int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address, } i = 0; - while (ath10k_ce_completed_recv_next_nolock(ce_diag, NULL, &buf, - &completed_nbytes, - &id, &flags) != 0) { + while (ath10k_ce_completed_recv_next_nolock(ce_diag, + (void **)&buf, + &completed_nbytes) + != 0) { mdelay(1); if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) { @@ -1119,7 +1117,7 @@ int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address, goto done; } - if (buf != address) { + if (*buf != address) { ret = -EIO; goto done; } @@ -1181,15 +1179,11 @@ static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state, struct sk_buff *skb; struct sk_buff_head list; void *transfer_context; - u32 ce_data; unsigned int nbytes, max_nbytes; - unsigned int transfer_id; - unsigned int flags; __skb_queue_head_init(&list); while (ath10k_ce_completed_recv_next(ce_state, &transfer_context, - &ce_data, &nbytes, &transfer_id, - &flags) == 0) { + &nbytes) == 0) { skb = transfer_context; max_nbytes = skb->len + skb_tailroom(skb); dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr, @@ -1835,13 +1829,10 @@ static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state) { struct ath10k *ar = ce_state->ar; struct bmi_xfer *xfer; - u32 ce_data; unsigned int nbytes; - unsigned int transfer_id; - unsigned int flags; - if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer, &ce_data, - &nbytes, &transfer_id, &flags)) + if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer, + &nbytes)) return; if (WARN_ON_ONCE(!xfer)) -- GitLab