| Message ID | 20220812161003.27279-29-kvalo@kernel.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices | expand |
On 8/12/2022 9:09 AM, Kalle Valo wrote: > From: Kalle Valo <quic_kvalo@quicinc.com> > > (Patches split into one patch per file for easier review, but the final > commit will be one big patch. See the cover letter for more info.) > > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> > --- > drivers/net/wireless/ath/ath12k/htc.h | 311 ++++++++++++++++++++++++++++++++++ > 1 file changed, 311 insertions(+) > > diff --git a/drivers/net/wireless/ath/ath12k/htc.h b/drivers/net/wireless/ath/ath12k/htc.h snip > +#define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK GENMASK(1, 0) > +#define ATH12K_HTC_CONN_FLAGS_RECV_ALLOC GENMASK(15, 8) > + > +enum ath12k_htc_conn_flags { > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH = 0x0, > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF = 0x1, > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS = 0x2, > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY = 0x3, it seems strange to call a 2-bit field a flag > + ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE = 1 << 2, > + ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL = 1 << 3 > +}; and it seems strange to have an enum which incorporates the values of the ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK along with definitions of other mask flags. perhaps these would be more logically defined as macros just after ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK: #define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK GENMASK(1, 0) #define ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE BIT(2) #define ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL BIT(3) and then rename ath12k_htc_conn_flags to be more specific that it just has threshold level values? > + > +enum ath12k_htc_conn_svc_status { > + ATH12K_HTC_CONN_SVC_STATUS_SUCCESS = 0, > + ATH12K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1, > + ATH12K_HTC_CONN_SVC_STATUS_FAILED = 2, > + ATH12K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3, > + ATH12K_HTC_CONN_SVC_STATUS_NO_MORE_EP = 4 > +}; > + > +struct ath12k_htc_ready { > + __le32 id_credit_count; > + __le32 size_ep; > +} __packed; > + > +struct ath12k_htc_ready_extended { > + struct ath12k_htc_ready base; > + __le32 ver_bundle; > +} __packed; > + > +struct ath12k_htc_conn_svc { > + __le32 msg_svc_id; > + __le32 flags_len; > +} __packed; > + > +struct ath12k_htc_conn_svc_resp { > + __le32 msg_svc_id; > + __le32 flags_len; > + __le32 svc_meta_pad; > +} __packed; > + > +struct ath12k_htc_setup_complete_extended { > + __le32 msg_id; is there a reason this isn't msg_svc_id to be consistent with the other htc messages? or even have every htc msg begin with a struct ath12k_htc_msg hdr? perhaps also consider some naming conventions similar to what were adopted for WMI? > + __le32 flags; > + __le32 max_msgs_per_bundled_recv; > +} __packed; > + > +struct ath12k_htc_msg { > + __le32 msg_svc_id; > + __le32 flags_len; > +} __packed __aligned(4); > + > +enum ath12k_htc_record_id { > + ATH12K_HTC_RECORD_NULL = 0, > + ATH12K_HTC_RECORD_CREDITS = 1 > +}; > + > +struct ath12k_htc_record_hdr { > + u8 id; /* @enum ath12k_htc_record_id */ > + u8 len; > + u8 pad0; > + u8 pad1; > +} __packed; > + > +struct ath12k_htc_credit_report { > + u8 eid; /* @enum ath12k_htc_ep_id */ > + u8 credits; > + u8 pad0; > + u8 pad1; > +} __packed; > + > +struct ath12k_htc_record { > + struct ath12k_htc_record_hdr hdr; > + union { > + struct ath12k_htc_credit_report credit_report[0]; > + u8 pauload[0]; s/pauload/payload/? s/[0]/[]/ per <https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays> > + }; > +} __packed __aligned(4); > + > +/* note: the trailer offset is dynamic depending > + * on payload length. this is only a struct layout draft > + */ > +struct ath12k_htc_frame { > + struct ath12k_htc_hdr hdr; > + union { > + struct ath12k_htc_msg msg; > + u8 payload[0]; s/[0]/[]/ > + }; > + struct ath12k_htc_record trailer[0]; s/[0]/[]/ but this struct makes no sense. you can't have a variable-length payload that isn't at the end of the struct if this is just supposed to be some sort of pseudo-documentation then perhaps put it in a comment so that the compiler won't see this? or perhaps even better draw an ASCII representation? > +} __packed __aligned(4); rest snipped
> -----Original Message----- > From: Jeff Johnson <quic_jjohnson@quicinc.com> > Sent: Friday, August 19, 2022 2:41 AM > To: Kalle Valo <kvalo@kernel.org>; linux-wireless@vger.kernel.org > Cc: ath12k@lists.infradead.org > Subject: Re: [PATCH 28/50] wifi: ath12k: add htc.h > > WARNING: This email originated from outside of Qualcomm. Please be wary > of any links or attachments, and do not enable macros. > > On 8/12/2022 9:09 AM, Kalle Valo wrote: > > From: Kalle Valo <quic_kvalo@quicinc.com> > > > > (Patches split into one patch per file for easier review, but the > > final commit will be one big patch. See the cover letter for more > > info.) > > > > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> > > --- > > drivers/net/wireless/ath/ath12k/htc.h | 311 > ++++++++++++++++++++++++++++++++++ > > 1 file changed, 311 insertions(+) > > > > diff --git a/drivers/net/wireless/ath/ath12k/htc.h > > b/drivers/net/wireless/ath/ath12k/htc.h > > snip > > > +#define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK > GENMASK(1, 0) > > +#define ATH12K_HTC_CONN_FLAGS_RECV_ALLOC GENMASK(15, 8) > > + > > +enum ath12k_htc_conn_flags { > > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH = > 0x0, > > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF = 0x1, > > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS = > 0x2, > > + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY = 0x3, > > it seems strange to call a 2-bit field a flag Sure will address this comment in the next version of the patch > > > + ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE = 1 << 2, > > + ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL = 1 << 3 }; > > and it seems strange to have an enum which incorporates the values of the > ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK along with > definitions of other mask flags. > > perhaps these would be more logically defined as macros just after > ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK: > #define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK > GENMASK(1, 0) #define > ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE BIT(2) #define > ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL BIT(3) > > and then rename ath12k_htc_conn_flags to be more specific that it just has > threshold level values? > Sure will address this comment in the next version of the patch > > + > > +enum ath12k_htc_conn_svc_status { > > + ATH12K_HTC_CONN_SVC_STATUS_SUCCESS = 0, > > + ATH12K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1, > > + ATH12K_HTC_CONN_SVC_STATUS_FAILED = 2, > > + ATH12K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3, > > + ATH12K_HTC_CONN_SVC_STATUS_NO_MORE_EP = 4 > > +}; > > + > > +struct ath12k_htc_ready { > > + __le32 id_credit_count; > > + __le32 size_ep; > > +} __packed; > > + > > +struct ath12k_htc_ready_extended { > > + struct ath12k_htc_ready base; > > + __le32 ver_bundle; > > +} __packed; > > + > > +struct ath12k_htc_conn_svc { > > + __le32 msg_svc_id; > > + __le32 flags_len; > > +} __packed; > > + > > +struct ath12k_htc_conn_svc_resp { > > + __le32 msg_svc_id; > > + __le32 flags_len; > > + __le32 svc_meta_pad; > > +} __packed; > > + > > +struct ath12k_htc_setup_complete_extended { > > + __le32 msg_id; > > is there a reason this isn't msg_svc_id to be consistent with the other htc > messages? > Yes, its different. > or even have every htc msg begin with a struct ath12k_htc_msg hdr? > > perhaps also consider some naming conventions similar to what were > adopted for WMI? > > > + __le32 flags; > > + __le32 max_msgs_per_bundled_recv; } __packed; > > + > > +struct ath12k_htc_msg { > > + __le32 msg_svc_id; > > + __le32 flags_len; > > +} __packed __aligned(4); > > + > > +enum ath12k_htc_record_id { > > + ATH12K_HTC_RECORD_NULL = 0, > > + ATH12K_HTC_RECORD_CREDITS = 1 > > +}; > > + > > +struct ath12k_htc_record_hdr { > > + u8 id; /* @enum ath12k_htc_record_id */ > > + u8 len; > > + u8 pad0; > > + u8 pad1; > > +} __packed; > > + > > +struct ath12k_htc_credit_report { > > + u8 eid; /* @enum ath12k_htc_ep_id */ > > + u8 credits; > > + u8 pad0; > > + u8 pad1; > > +} __packed; > > + > > +struct ath12k_htc_record { > > + struct ath12k_htc_record_hdr hdr; > > + union { > > + struct ath12k_htc_credit_report credit_report[0]; > > + u8 pauload[0]; > > s/pauload/payload/? > Sure will address this comment in the next version of the patch > s/[0]/[]/ per > <https://www.kernel.org/doc/html/latest/process/deprecated.html#zero- > length-and-one-element-arrays> > > > + }; > > +} __packed __aligned(4); > > + > > +/* note: the trailer offset is dynamic depending > > + * on payload length. this is only a struct layout draft */ struct > > +ath12k_htc_frame { > > + struct ath12k_htc_hdr hdr; > > + union { > > + struct ath12k_htc_msg msg; > > + u8 payload[0]; > > s/[0]/[]/ > > > + }; > > + struct ath12k_htc_record trailer[0]; > > > s/[0]/[]/ > > but this struct makes no sense. you can't have a variable-length payload that > isn't at the end of the struct > > if this is just supposed to be some sort of pseudo-documentation then > perhaps put it in a comment so that the compiler won't see this? > > or perhaps even better draw an ASCII representation? Sure will address this comment in the next version of the patch > > > +} __packed __aligned(4); > > rest snipped Thanks Karthikeyan
diff --git a/drivers/net/wireless/ath/ath12k/htc.h b/drivers/net/wireless/ath/ath12k/htc.h new file mode 100644 index 000000000000..00797fcadff3 --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/htc.h @@ -0,0 +1,311 @@ +/* SPDX-License-Identifier: BSD-3-Clause-Clear */ +/* + * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. + * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef ATH12K_HTC_H +#define ATH12K_HTC_H + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/bug.h> +#include <linux/skbuff.h> +#include <linux/timer.h> + +struct ath12k_base; + +#define HTC_HDR_ENDPOINTID GENMASK(7, 0) +#define HTC_HDR_FLAGS GENMASK(15, 8) +#define HTC_HDR_PAYLOADLEN GENMASK(31, 16) +#define HTC_HDR_CONTROLBYTES0 GENMASK(7, 0) +#define HTC_HDR_CONTROLBYTES1 GENMASK(15, 8) +#define HTC_HDR_RESERVED GENMASK(31, 16) + +#define HTC_SVC_MSG_SERVICE_ID GENMASK(31, 16) +#define HTC_SVC_MSG_CONNECTIONFLAGS GENMASK(15, 0) +#define HTC_SVC_MSG_SERVICEMETALENGTH GENMASK(23, 16) +#define HTC_READY_MSG_CREDITCOUNT GENMASK(31, 16) +#define HTC_READY_MSG_CREDITSIZE GENMASK(15, 0) +#define HTC_READY_MSG_MAXENDPOINTS GENMASK(23, 16) + +#define HTC_READY_EX_MSG_HTCVERSION GENMASK(7, 0) +#define HTC_READY_EX_MSG_MAXMSGSPERHTCBUNDLE GENMASK(15, 8) + +#define HTC_SVC_RESP_MSG_SERVICEID GENMASK(31, 16) +#define HTC_SVC_RESP_MSG_STATUS GENMASK(7, 0) +#define HTC_SVC_RESP_MSG_ENDPOINTID GENMASK(15, 8) +#define HTC_SVC_RESP_MSG_MAXMSGSIZE GENMASK(31, 16) +#define HTC_SVC_RESP_MSG_SERVICEMETALENGTH GENMASK(7, 0) + +#define HTC_MSG_MESSAGEID GENMASK(15, 0) +#define HTC_SETUP_COMPLETE_EX_MSG_SETUPFLAGS GENMASK(31, 0) +#define HTC_SETUP_COMPLETE_EX_MSG_MAXMSGSPERBUNDLEDRECV GENMASK(7, 0) +#define HTC_SETUP_COMPLETE_EX_MSG_RSVD0 GENMASK(15, 8) +#define HTC_SETUP_COMPLETE_EX_MSG_RSVD1 GENMASK(23, 16) +#define HTC_SETUP_COMPLETE_EX_MSG_RSVD2 GENMASK(31, 24) + +enum ath12k_htc_tx_flags { + ATH12K_HTC_FLAG_NEED_CREDIT_UPDATE = 0x01, + ATH12K_HTC_FLAG_SEND_BUNDLE = 0x02 +}; + +enum ath12k_htc_rx_flags { + ATH12K_HTC_FLAG_TRAILER_PRESENT = 0x02, + ATH12K_HTC_FLAG_BUNDLE_MASK = 0xF0 +}; + +struct ath12k_htc_hdr { + __le32 htc_info; + __le32 ctrl_info; +} __packed __aligned(4); + +enum ath12k_htc_msg_id { + ATH12K_HTC_MSG_READY_ID = 1, + ATH12K_HTC_MSG_CONNECT_SERVICE_ID = 2, + ATH12K_HTC_MSG_CONNECT_SERVICE_RESP_ID = 3, + ATH12K_HTC_MSG_SETUP_COMPLETE_ID = 4, + ATH12K_HTC_MSG_SETUP_COMPLETE_EX_ID = 5, + ATH12K_HTC_MSG_SEND_SUSPEND_COMPLETE = 6, + ATH12K_HTC_MSG_NACK_SUSPEND = 7, + ATH12K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID = 8, +}; + +enum ath12k_htc_version { + ATH12K_HTC_VERSION_2P0 = 0x00, /* 2.0 */ + ATH12K_HTC_VERSION_2P1 = 0x01, /* 2.1 */ +}; + +#define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK GENMASK(1, 0) +#define ATH12K_HTC_CONN_FLAGS_RECV_ALLOC GENMASK(15, 8) + +enum ath12k_htc_conn_flags { + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH = 0x0, + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF = 0x1, + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS = 0x2, + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY = 0x3, + ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE = 1 << 2, + ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL = 1 << 3 +}; + +enum ath12k_htc_conn_svc_status { + ATH12K_HTC_CONN_SVC_STATUS_SUCCESS = 0, + ATH12K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1, + ATH12K_HTC_CONN_SVC_STATUS_FAILED = 2, + ATH12K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3, + ATH12K_HTC_CONN_SVC_STATUS_NO_MORE_EP = 4 +}; + +struct ath12k_htc_ready { + __le32 id_credit_count; + __le32 size_ep; +} __packed; + +struct ath12k_htc_ready_extended { + struct ath12k_htc_ready base; + __le32 ver_bundle; +} __packed; + +struct ath12k_htc_conn_svc { + __le32 msg_svc_id; + __le32 flags_len; +} __packed; + +struct ath12k_htc_conn_svc_resp { + __le32 msg_svc_id; + __le32 flags_len; + __le32 svc_meta_pad; +} __packed; + +struct ath12k_htc_setup_complete_extended { + __le32 msg_id; + __le32 flags; + __le32 max_msgs_per_bundled_recv; +} __packed; + +struct ath12k_htc_msg { + __le32 msg_svc_id; + __le32 flags_len; +} __packed __aligned(4); + +enum ath12k_htc_record_id { + ATH12K_HTC_RECORD_NULL = 0, + ATH12K_HTC_RECORD_CREDITS = 1 +}; + +struct ath12k_htc_record_hdr { + u8 id; /* @enum ath12k_htc_record_id */ + u8 len; + u8 pad0; + u8 pad1; +} __packed; + +struct ath12k_htc_credit_report { + u8 eid; /* @enum ath12k_htc_ep_id */ + u8 credits; + u8 pad0; + u8 pad1; +} __packed; + +struct ath12k_htc_record { + struct ath12k_htc_record_hdr hdr; + union { + struct ath12k_htc_credit_report credit_report[0]; + u8 pauload[0]; + }; +} __packed __aligned(4); + +/* note: the trailer offset is dynamic depending + * on payload length. this is only a struct layout draft + */ +struct ath12k_htc_frame { + struct ath12k_htc_hdr hdr; + union { + struct ath12k_htc_msg msg; + u8 payload[0]; + }; + struct ath12k_htc_record trailer[0]; +} __packed __aligned(4); + +enum ath12k_htc_svc_gid { + ATH12K_HTC_SVC_GRP_RSVD = 0, + ATH12K_HTC_SVC_GRP_WMI = 1, + ATH12K_HTC_SVC_GRP_NMI = 2, + ATH12K_HTC_SVC_GRP_HTT = 3, + ATH12K_HTC_SVC_GRP_CFG = 4, + ATH12K_HTC_SVC_GRP_IPA = 5, + ATH12K_HTC_SVC_GRP_PKTLOG = 6, + + ATH12K_HTC_SVC_GRP_TEST = 254, + ATH12K_HTC_SVC_GRP_LAST = 255, +}; + +#define SVC(group, idx) \ + (int)(((int)(group) << 8) | (int)(idx)) + +enum ath12k_htc_svc_id { + /* NOTE: service ID of 0x0000 is reserved and should never be used */ + ATH12K_HTC_SVC_ID_RESERVED = 0x0000, + ATH12K_HTC_SVC_ID_UNUSED = ATH12K_HTC_SVC_ID_RESERVED, + + ATH12K_HTC_SVC_ID_RSVD_CTRL = SVC(ATH12K_HTC_SVC_GRP_RSVD, 1), + ATH12K_HTC_SVC_ID_WMI_CONTROL = SVC(ATH12K_HTC_SVC_GRP_WMI, 0), + ATH12K_HTC_SVC_ID_WMI_DATA_BE = SVC(ATH12K_HTC_SVC_GRP_WMI, 1), + ATH12K_HTC_SVC_ID_WMI_DATA_BK = SVC(ATH12K_HTC_SVC_GRP_WMI, 2), + ATH12K_HTC_SVC_ID_WMI_DATA_VI = SVC(ATH12K_HTC_SVC_GRP_WMI, 3), + ATH12K_HTC_SVC_ID_WMI_DATA_VO = SVC(ATH12K_HTC_SVC_GRP_WMI, 4), + ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC1 = SVC(ATH12K_HTC_SVC_GRP_WMI, 5), + ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC2 = SVC(ATH12K_HTC_SVC_GRP_WMI, 6), + ATH12K_HTC_SVC_ID_WMI_CONTROL_DIAG = SVC(ATH12K_HTC_SVC_GRP_WMI, 7), + + ATH12K_HTC_SVC_ID_NMI_CONTROL = SVC(ATH12K_HTC_SVC_GRP_NMI, 0), + ATH12K_HTC_SVC_ID_NMI_DATA = SVC(ATH12K_HTC_SVC_GRP_NMI, 1), + + ATH12K_HTC_SVC_ID_HTT_DATA_MSG = SVC(ATH12K_HTC_SVC_GRP_HTT, 0), + + /* raw stream service (i.e. flash, tcmd, calibration apps) */ + ATH12K_HTC_SVC_ID_TEST_RAW_STREAMS = SVC(ATH12K_HTC_SVC_GRP_TEST, 0), + ATH12K_HTC_SVC_ID_IPA_TX = SVC(ATH12K_HTC_SVC_GRP_IPA, 0), + ATH12K_HTC_SVC_ID_PKT_LOG = SVC(ATH12K_HTC_SVC_GRP_PKTLOG, 0), +}; + +#undef SVC + +enum ath12k_htc_ep_id { + ATH12K_HTC_EP_UNUSED = -1, + ATH12K_HTC_EP_0 = 0, + ATH12K_HTC_EP_1 = 1, + ATH12K_HTC_EP_2, + ATH12K_HTC_EP_3, + ATH12K_HTC_EP_4, + ATH12K_HTC_EP_5, + ATH12K_HTC_EP_6, + ATH12K_HTC_EP_7, + ATH12K_HTC_EP_8, + ATH12K_HTC_EP_COUNT, +}; + +struct ath12k_htc_ep_ops { + void (*ep_tx_complete)(struct ath12k_base *ab, struct sk_buff *skb); + void (*ep_rx_complete)(struct ath12k_base *ab, struct sk_buff *skb); + void (*ep_tx_credits)(struct ath12k_base *ab); +}; + +/* service connection information */ +struct ath12k_htc_svc_conn_req { + u16 service_id; + struct ath12k_htc_ep_ops ep_ops; + int max_send_queue_depth; +}; + +/* service connection response information */ +struct ath12k_htc_svc_conn_resp { + u8 buffer_len; + u8 actual_len; + enum ath12k_htc_ep_id eid; + unsigned int max_msg_len; + u8 connect_resp_code; +}; + +#define ATH12K_NUM_CONTROL_TX_BUFFERS 2 +#define ATH12K_HTC_MAX_LEN 4096 +#define ATH12K_HTC_MAX_CTRL_MSG_LEN 256 +#define ATH12K_HTC_WAIT_TIMEOUT_HZ (1 * HZ) +#define ATH12K_HTC_CONTROL_BUFFER_SIZE (ATH12K_HTC_MAX_CTRL_MSG_LEN + \ + sizeof(struct ath12k_htc_hdr)) +#define ATH12K_HTC_CONN_SVC_TIMEOUT_HZ (1 * HZ) +#define ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES 8 + +struct ath12k_htc_ep { + struct ath12k_htc *htc; + enum ath12k_htc_ep_id eid; + enum ath12k_htc_svc_id service_id; + struct ath12k_htc_ep_ops ep_ops; + + int max_tx_queue_depth; + int max_ep_message_len; + u8 ul_pipe_id; + u8 dl_pipe_id; + + u8 seq_no; /* for debugging */ + int tx_credits; + bool tx_credit_flow_enabled; +}; + +struct ath12k_htc_svc_tx_credits { + u16 service_id; + u8 credit_allocation; +}; + +struct ath12k_htc { + struct ath12k_base *ab; + struct ath12k_htc_ep endpoint[ATH12K_HTC_EP_COUNT]; + + /* protects endpoints */ + spinlock_t tx_lock; + + u8 control_resp_buffer[ATH12K_HTC_MAX_CTRL_MSG_LEN]; + int control_resp_len; + + struct completion ctl_resp; + + int total_transmit_credits; + struct ath12k_htc_svc_tx_credits + service_alloc_table[ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES]; + int target_credit_size; + u8 wmi_ep_count; +}; + +int ath12k_htc_init(struct ath12k_base *ar); +int ath12k_htc_wait_target(struct ath12k_htc *htc); +int ath12k_htc_start(struct ath12k_htc *htc); +int ath12k_htc_connect_service(struct ath12k_htc *htc, + struct ath12k_htc_svc_conn_req *conn_req, + struct ath12k_htc_svc_conn_resp *conn_resp); +int ath12k_htc_send(struct ath12k_htc *htc, enum ath12k_htc_ep_id eid, + struct sk_buff *packet); +struct sk_buff *ath12k_htc_alloc_skb(struct ath12k_base *ar, int size); +void ath12k_htc_rx_completion_handler(struct ath12k_base *ar, + struct sk_buff *skb); + +#endif