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ath10k: htc: rx trailer lookahead support

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The RX trailer parsing is now capable of parsing lookahead reports.
A lookahead contains the first 4 bytes of the next HTC message
(that will be read in the next SDIO read operation).
Lookaheads are used by the SDIO/mbox HIF layer to determine if
the next message is part of a bundle, which endpoint it belongs
to and how long it is.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Erik Stromdahl
2017-04-26 12:17:52 +03:00
committed by Kalle Valo
parent 3e0dd820f0
commit 680ebb4e79
2 changed files with 120 additions and 5 deletions
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30
drivers/net/wireless/ath/ath10k/htc.h
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@@ -50,6 +50,8 @@ struct ath10k;
* 4-byte aligned.
*/
#define HTC_HOST_MAX_MSG_PER_BUNDLE 8
enum ath10k_htc_tx_flags {
ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE = 0x01,
ATH10K_HTC_FLAG_SEND_BUNDLE = 0x02
@@ -174,8 +176,10 @@ struct ath10k_htc_msg {
} __packed __aligned(4);
enum ath10k_ath10k_htc_record_id {
ATH10K_HTC_RECORD_NULL = 0,
ATH10K_HTC_RECORD_CREDITS = 1
ATH10K_HTC_RECORD_NULL = 0,
ATH10K_HTC_RECORD_CREDITS = 1,
ATH10K_HTC_RECORD_LOOKAHEAD = 2,
ATH10K_HTC_RECORD_LOOKAHEAD_BUNDLE = 3,
};
struct ath10k_ath10k_htc_record_hdr {
@@ -192,10 +196,28 @@ struct ath10k_htc_credit_report {
u8 pad1;
} __packed;
struct ath10k_htc_lookahead_report {
u8 pre_valid;
u8 pad0;
u8 pad1;
u8 pad2;
u8 lookahead[4];
u8 post_valid;
u8 pad3;
u8 pad4;
u8 pad5;
} __packed;
struct ath10k_htc_lookahead_bundle {
u8 lookahead[4];
} __packed;
struct ath10k_htc_record {
struct ath10k_ath10k_htc_record_hdr hdr;
union {
struct ath10k_htc_credit_report credit_report[0];
struct ath10k_htc_lookahead_report lookahead_report[0];
struct ath10k_htc_lookahead_bundle lookahead_bundle[0];
u8 pauload[0];
};
} __packed __aligned(4);
@@ -356,6 +378,8 @@ void ath10k_htc_notify_tx_completion(struct ath10k_htc_ep *ep,
int ath10k_htc_process_trailer(struct ath10k_htc *htc,
u8 *buffer,
int length,
enum ath10k_htc_ep_id src_eid);
enum ath10k_htc_ep_id src_eid,
void *next_lookaheads,
int *next_lookaheads_len);
#endif