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| author | Michal Kazior <michal.kazior@tieto.com> | 2014-02-27 20:50:04 +0400 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2014-02-28 13:59:06 +0400 |
| commit | 726346fc713498a84c4d591fce9f1fbe38bf2a44 (patch) | |
| tree | f275250533a3f53c9d0f3ef80249a6e0458b2f5f /drivers/net/wireless/ath/ath10k/hif.h | |
| parent | 7676a88876b0e72b46c0e51cabcf47b416730509 (diff) | |
| download | linux-726346fc713498a84c4d591fce9f1fbe38bf2a44.tar.xz | |
ath10k: replace send_head() with tx_sg()
PCI is capable of handling scatter-gather lists.
This can be used to avoid copying memory.
Change the name of the callback while at to
reflect its purpose.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/hif.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/hif.h | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath10k/hif.h b/drivers/net/wireless/ath/ath10k/hif.h index dcdea68bcc0a..2ac7beacddca 100644 --- a/drivers/net/wireless/ath/ath10k/hif.h +++ b/drivers/net/wireless/ath/ath10k/hif.h @@ -21,6 +21,14 @@ #include <linux/kernel.h> #include "core.h" +struct ath10k_hif_sg_item { + u16 transfer_id; + void *transfer_context; /* NULL = tx completion callback not called */ + void *vaddr; /* for debugging mostly */ + u32 paddr; + u16 len; +}; + struct ath10k_hif_cb { int (*tx_completion)(struct ath10k *ar, struct sk_buff *wbuf, @@ -31,11 +39,9 @@ struct ath10k_hif_cb { }; struct ath10k_hif_ops { - /* Send the head of a buffer to HIF for transmission to the target. */ - int (*send_head)(struct ath10k *ar, u8 pipe_id, - unsigned int transfer_id, - unsigned int nbytes, - struct sk_buff *buf); + /* send a scatter-gather list to the target */ + int (*tx_sg)(struct ath10k *ar, u8 pipe_id, + struct ath10k_hif_sg_item *items, int n_items); /* * API to handle HIF-specific BMI message exchanges, this API is @@ -86,12 +92,11 @@ struct ath10k_hif_ops { }; -static inline int ath10k_hif_send_head(struct ath10k *ar, u8 pipe_id, - unsigned int transfer_id, - unsigned int nbytes, - struct sk_buff *buf) +static inline int ath10k_hif_tx_sg(struct ath10k *ar, u8 pipe_id, + struct ath10k_hif_sg_item *items, + int n_items) { - return ar->hif.ops->send_head(ar, pipe_id, transfer_id, nbytes, buf); + return ar->hif.ops->tx_sg(ar, pipe_id, items, n_items); } static inline int ath10k_hif_exchange_bmi_msg(struct ath10k *ar, |