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ath10k: remove num_sends_allowed 

The value provided by num_sends_allowed is now
derived from CE source ringbuffer state.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2013-10-02 11:03:41 +02:00 committed by Kalle Valo
parent 2e761b5a52
commit 3efcb3b40c
4 changed files with 18 additions and 24 deletions
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17
drivers/net/wireless/ath/ath10k/ce.c
View File

@ -283,7 +283,7 @@ static int ath10k_ce_send_nolock(struct ath10k_ce_pipe *ce_state,
if (unlikely(CE_RING_DELTA(nentries_mask,
write_index, sw_index - 1) <= 0)) {
ret = -EIO;
ret = -ENOSR;
goto exit;
}
@ -338,6 +338,21 @@ int ath10k_ce_send(struct ath10k_ce_pipe *ce_state,
return ret;
}
int ath10k_ce_num_free_src_entries(struct ath10k_ce_pipe *pipe)
{
struct ath10k *ar = pipe->ar;
struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
int delta;
spin_lock_bh(&ar_pci->ce_lock);
delta = CE_RING_DELTA(pipe->src_ring->nentries_mask,
pipe->src_ring->write_index,
pipe->src_ring->sw_index - 1);
spin_unlock_bh(&ar_pci->ce_lock);
return delta;
}
int ath10k_ce_recv_buf_enqueue(struct ath10k_ce_pipe *ce_state,
void *per_recv_context,
u32 buffer)

1
drivers/net/wireless/ath/ath10k/ce.h
View File

@ -156,6 +156,7 @@ void ath10k_ce_send_cb_register(struct ath10k_ce_pipe *ce_state,
void (*send_cb)(struct ath10k_ce_pipe *),
int disable_interrupts);
int ath10k_ce_num_free_src_entries(struct ath10k_ce_pipe *pipe);
/*==================Recv=======================*/

21
drivers/net/wireless/ath/ath10k/pci.c
View File

@ -720,16 +720,6 @@ static int ath10k_pci_hif_send_head(struct ath10k *ar, u8 pipe_id,
"ath10k tx: data: ",
nbuf->data, nbuf->len);
/* Make sure we have resources to handle this request */
spin_lock_bh(&pipe_info->pipe_lock);
if (!pipe_info->num_sends_allowed) {
ath10k_warn("Pipe: %d is full\n", pipe_id);
spin_unlock_bh(&pipe_info->pipe_lock);
return -ENOSR;
}
pipe_info->num_sends_allowed--;
spin_unlock_bh(&pipe_info->pipe_lock);
ret = ath10k_ce_send(ce_hdl, nbuf, skb_cb->paddr, len, transfer_id,
flags);
if (ret)
@ -741,14 +731,7 @@ static int ath10k_pci_hif_send_head(struct ath10k *ar, u8 pipe_id,
static u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
{
struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
struct ath10k_pci_pipe *pipe_info = &(ar_pci->pipe_info[pipe]);
int ret;
spin_lock_bh(&pipe_info->pipe_lock);
ret = pipe_info->num_sends_allowed;
spin_unlock_bh(&pipe_info->pipe_lock);
return ret;
return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
}
static void ath10k_pci_hif_dump_area(struct ath10k *ar)
@ -863,7 +846,6 @@ static int ath10k_pci_start_ce(struct ath10k *ar)
ath10k_pci_ce_send_done,
disable_interrupts);
completions += attr->src_nentries;
pipe_info->num_sends_allowed = attr->src_nentries - 1;
}
if (attr->dest_nentries) {
@ -1033,7 +1015,6 @@ static void ath10k_pci_process_ce(struct ath10k *ar)
*/
spin_lock_bh(&compl->pipe_info->pipe_lock);
list_add_tail(&compl->list, &compl->pipe_info->compl_free);
compl->pipe_info->num_sends_allowed += send_done;
spin_unlock_bh(&compl->pipe_info->pipe_lock);
}

3
drivers/net/wireless/ath/ath10k/pci.h
View File

@ -178,9 +178,6 @@ struct ath10k_pci_pipe {
/* List of free CE completion slots */
struct list_head compl_free;
/* Limit the number of outstanding send requests. */
int num_sends_allowed;
struct ath10k_pci *ar_pci;
struct tasklet_struct intr;
};