xref: /openbmc/linux/drivers/net/wireless/ath/ath10k/htt.h (revision 96de2506)
1 /*
2  * Copyright (c) 2005-2011 Atheros Communications Inc.
3  * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
4  * Copyright (c) 2018, The Linux Foundation. All rights reserved.
5  *
6  * Permission to use, copy, modify, and/or distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #ifndef _HTT_H_
20 #define _HTT_H_
21 
22 #include <linux/bug.h>
23 #include <linux/interrupt.h>
24 #include <linux/dmapool.h>
25 #include <linux/hashtable.h>
26 #include <linux/kfifo.h>
27 #include <net/mac80211.h>
28 
29 #include "htc.h"
30 #include "hw.h"
31 #include "rx_desc.h"
32 
33 enum htt_dbg_stats_type {
34 	HTT_DBG_STATS_WAL_PDEV_TXRX = 1 << 0,
35 	HTT_DBG_STATS_RX_REORDER    = 1 << 1,
36 	HTT_DBG_STATS_RX_RATE_INFO  = 1 << 2,
37 	HTT_DBG_STATS_TX_PPDU_LOG   = 1 << 3,
38 	HTT_DBG_STATS_TX_RATE_INFO  = 1 << 4,
39 	/* bits 5-23 currently reserved */
40 
41 	HTT_DBG_NUM_STATS /* keep this last */
42 };
43 
44 enum htt_h2t_msg_type { /* host-to-target */
45 	HTT_H2T_MSG_TYPE_VERSION_REQ        = 0,
46 	HTT_H2T_MSG_TYPE_TX_FRM             = 1,
47 	HTT_H2T_MSG_TYPE_RX_RING_CFG        = 2,
48 	HTT_H2T_MSG_TYPE_STATS_REQ          = 3,
49 	HTT_H2T_MSG_TYPE_SYNC               = 4,
50 	HTT_H2T_MSG_TYPE_AGGR_CFG           = 5,
51 	HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG = 6,
52 
53 	/* This command is used for sending management frames in HTT < 3.0.
54 	 * HTT >= 3.0 uses TX_FRM for everything.
55 	 */
56 	HTT_H2T_MSG_TYPE_MGMT_TX            = 7,
57 	HTT_H2T_MSG_TYPE_TX_FETCH_RESP      = 11,
58 
59 	HTT_H2T_NUM_MSGS /* keep this last */
60 };
61 
62 struct htt_cmd_hdr {
63 	u8 msg_type;
64 } __packed;
65 
66 struct htt_ver_req {
67 	u8 pad[sizeof(u32) - sizeof(struct htt_cmd_hdr)];
68 } __packed;
69 
70 /*
71  * HTT tx MSDU descriptor
72  *
73  * The HTT tx MSDU descriptor is created by the host HTT SW for each
74  * tx MSDU.  The HTT tx MSDU descriptor contains the information that
75  * the target firmware needs for the FW's tx processing, particularly
76  * for creating the HW msdu descriptor.
77  * The same HTT tx descriptor is used for HL and LL systems, though
78  * a few fields within the tx descriptor are used only by LL or
79  * only by HL.
80  * The HTT tx descriptor is defined in two manners: by a struct with
81  * bitfields, and by a series of [dword offset, bit mask, bit shift]
82  * definitions.
83  * The target should use the struct def, for simplicitly and clarity,
84  * but the host shall use the bit-mast + bit-shift defs, to be endian-
85  * neutral.  Specifically, the host shall use the get/set macros built
86  * around the mask + shift defs.
87  */
88 struct htt_data_tx_desc_frag {
89 	union {
90 		struct double_word_addr {
91 			__le32 paddr;
92 			__le32 len;
93 		} __packed dword_addr;
94 		struct triple_word_addr {
95 			__le32 paddr_lo;
96 			__le16 paddr_hi;
97 			__le16 len_16;
98 		} __packed tword_addr;
99 	} __packed;
100 } __packed;
101 
102 struct htt_msdu_ext_desc {
103 	__le32 tso_flag[3];
104 	__le16 ip_identification;
105 	u8 flags;
106 	u8 reserved;
107 	struct htt_data_tx_desc_frag frags[6];
108 };
109 
110 struct htt_msdu_ext_desc_64 {
111 	__le32 tso_flag[5];
112 	__le16 ip_identification;
113 	u8 flags;
114 	u8 reserved;
115 	struct htt_data_tx_desc_frag frags[6];
116 };
117 
118 #define	HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE		BIT(0)
119 #define	HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE	BIT(1)
120 #define	HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE	BIT(2)
121 #define	HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE	BIT(3)
122 #define	HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE	BIT(4)
123 
124 #define HTT_MSDU_CHECKSUM_ENABLE (HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE \
125 				 | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE \
126 				 | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE \
127 				 | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE \
128 				 | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE)
129 
130 #define HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE_64		BIT(16)
131 #define HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE_64		BIT(17)
132 #define HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE_64		BIT(18)
133 #define HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE_64		BIT(19)
134 #define HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE_64		BIT(20)
135 #define HTT_MSDU_EXT_DESC_FLAG_PARTIAL_CSUM_ENABLE_64		BIT(21)
136 
137 #define HTT_MSDU_CHECKSUM_ENABLE_64  (HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE_64 \
138 				     | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE_64 \
139 				     | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE_64 \
140 				     | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE_64 \
141 				     | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE_64)
142 
143 enum htt_data_tx_desc_flags0 {
144 	HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT = 1 << 0,
145 	HTT_DATA_TX_DESC_FLAGS0_NO_AGGR         = 1 << 1,
146 	HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT      = 1 << 2,
147 	HTT_DATA_TX_DESC_FLAGS0_NO_CLASSIFY     = 1 << 3,
148 	HTT_DATA_TX_DESC_FLAGS0_RSVD0           = 1 << 4
149 #define HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE_MASK 0xE0
150 #define HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE_LSB 5
151 };
152 
153 enum htt_data_tx_desc_flags1 {
154 #define HTT_DATA_TX_DESC_FLAGS1_VDEV_ID_BITS 6
155 #define HTT_DATA_TX_DESC_FLAGS1_VDEV_ID_MASK 0x003F
156 #define HTT_DATA_TX_DESC_FLAGS1_VDEV_ID_LSB  0
157 #define HTT_DATA_TX_DESC_FLAGS1_EXT_TID_BITS 5
158 #define HTT_DATA_TX_DESC_FLAGS1_EXT_TID_MASK 0x07C0
159 #define HTT_DATA_TX_DESC_FLAGS1_EXT_TID_LSB  6
160 	HTT_DATA_TX_DESC_FLAGS1_POSTPONED        = 1 << 11,
161 	HTT_DATA_TX_DESC_FLAGS1_MORE_IN_BATCH    = 1 << 12,
162 	HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD = 1 << 13,
163 	HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD = 1 << 14,
164 	HTT_DATA_TX_DESC_FLAGS1_RSVD1            = 1 << 15
165 };
166 
167 enum htt_data_tx_ext_tid {
168 	HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST = 16,
169 	HTT_DATA_TX_EXT_TID_MGMT                = 17,
170 	HTT_DATA_TX_EXT_TID_INVALID             = 31
171 };
172 
173 #define HTT_INVALID_PEERID 0xFFFF
174 
175 /*
176  * htt_data_tx_desc - used for data tx path
177  *
178  * Note: vdev_id irrelevant for pkt_type == raw and no_classify == 1.
179  *       ext_tid: for qos-data frames (0-15), see %HTT_DATA_TX_EXT_TID_
180  *                for special kinds of tids
181  *       postponed: only for HL hosts. indicates if this is a resend
182  *                  (HL hosts manage queues on the host )
183  *       more_in_batch: only for HL hosts. indicates if more packets are
184  *                      pending. this allows target to wait and aggregate
185  *       freq: 0 means home channel of given vdev. intended for offchannel
186  */
187 struct htt_data_tx_desc {
188 	u8 flags0; /* %HTT_DATA_TX_DESC_FLAGS0_ */
189 	__le16 flags1; /* %HTT_DATA_TX_DESC_FLAGS1_ */
190 	__le16 len;
191 	__le16 id;
192 	__le32 frags_paddr;
193 	union {
194 		__le32 peerid;
195 		struct {
196 			__le16 peerid;
197 			__le16 freq;
198 		} __packed offchan_tx;
199 	} __packed;
200 	u8 prefetch[0]; /* start of frame, for FW classification engine */
201 } __packed;
202 
203 struct htt_data_tx_desc_64 {
204 	u8 flags0; /* %HTT_DATA_TX_DESC_FLAGS0_ */
205 	__le16 flags1; /* %HTT_DATA_TX_DESC_FLAGS1_ */
206 	__le16 len;
207 	__le16 id;
208 	__le64 frags_paddr;
209 	union {
210 		__le32 peerid;
211 		struct {
212 			__le16 peerid;
213 			__le16 freq;
214 		} __packed offchan_tx;
215 	} __packed;
216 	u8 prefetch[0]; /* start of frame, for FW classification engine */
217 } __packed;
218 
219 enum htt_rx_ring_flags {
220 	HTT_RX_RING_FLAGS_MAC80211_HDR = 1 << 0,
221 	HTT_RX_RING_FLAGS_MSDU_PAYLOAD = 1 << 1,
222 	HTT_RX_RING_FLAGS_PPDU_START   = 1 << 2,
223 	HTT_RX_RING_FLAGS_PPDU_END     = 1 << 3,
224 	HTT_RX_RING_FLAGS_MPDU_START   = 1 << 4,
225 	HTT_RX_RING_FLAGS_MPDU_END     = 1 << 5,
226 	HTT_RX_RING_FLAGS_MSDU_START   = 1 << 6,
227 	HTT_RX_RING_FLAGS_MSDU_END     = 1 << 7,
228 	HTT_RX_RING_FLAGS_RX_ATTENTION = 1 << 8,
229 	HTT_RX_RING_FLAGS_FRAG_INFO    = 1 << 9,
230 	HTT_RX_RING_FLAGS_UNICAST_RX   = 1 << 10,
231 	HTT_RX_RING_FLAGS_MULTICAST_RX = 1 << 11,
232 	HTT_RX_RING_FLAGS_CTRL_RX      = 1 << 12,
233 	HTT_RX_RING_FLAGS_MGMT_RX      = 1 << 13,
234 	HTT_RX_RING_FLAGS_NULL_RX      = 1 << 14,
235 	HTT_RX_RING_FLAGS_PHY_DATA_RX  = 1 << 15
236 };
237 
238 #define HTT_RX_RING_SIZE_MIN 128
239 #define HTT_RX_RING_SIZE_MAX 2048
240 #define HTT_RX_RING_SIZE HTT_RX_RING_SIZE_MAX
241 #define HTT_RX_RING_FILL_LEVEL (((HTT_RX_RING_SIZE) / 2) - 1)
242 #define HTT_RX_RING_FILL_LEVEL_DUAL_MAC (HTT_RX_RING_SIZE - 1)
243 
244 struct htt_rx_ring_setup_ring32 {
245 	__le32 fw_idx_shadow_reg_paddr;
246 	__le32 rx_ring_base_paddr;
247 	__le16 rx_ring_len; /* in 4-byte words */
248 	__le16 rx_ring_bufsize; /* rx skb size - in bytes */
249 	__le16 flags; /* %HTT_RX_RING_FLAGS_ */
250 	__le16 fw_idx_init_val;
251 
252 	/* the following offsets are in 4-byte units */
253 	__le16 mac80211_hdr_offset;
254 	__le16 msdu_payload_offset;
255 	__le16 ppdu_start_offset;
256 	__le16 ppdu_end_offset;
257 	__le16 mpdu_start_offset;
258 	__le16 mpdu_end_offset;
259 	__le16 msdu_start_offset;
260 	__le16 msdu_end_offset;
261 	__le16 rx_attention_offset;
262 	__le16 frag_info_offset;
263 } __packed;
264 
265 struct htt_rx_ring_setup_ring64 {
266 	__le64 fw_idx_shadow_reg_paddr;
267 	__le64 rx_ring_base_paddr;
268 	__le16 rx_ring_len; /* in 4-byte words */
269 	__le16 rx_ring_bufsize; /* rx skb size - in bytes */
270 	__le16 flags; /* %HTT_RX_RING_FLAGS_ */
271 	__le16 fw_idx_init_val;
272 
273 	/* the following offsets are in 4-byte units */
274 	__le16 mac80211_hdr_offset;
275 	__le16 msdu_payload_offset;
276 	__le16 ppdu_start_offset;
277 	__le16 ppdu_end_offset;
278 	__le16 mpdu_start_offset;
279 	__le16 mpdu_end_offset;
280 	__le16 msdu_start_offset;
281 	__le16 msdu_end_offset;
282 	__le16 rx_attention_offset;
283 	__le16 frag_info_offset;
284 } __packed;
285 
286 struct htt_rx_ring_setup_hdr {
287 	u8 num_rings; /* supported values: 1, 2 */
288 	__le16 rsvd0;
289 } __packed;
290 
291 struct htt_rx_ring_setup_32 {
292 	struct htt_rx_ring_setup_hdr hdr;
293 	struct htt_rx_ring_setup_ring32 rings[0];
294 } __packed;
295 
296 struct htt_rx_ring_setup_64 {
297 	struct htt_rx_ring_setup_hdr hdr;
298 	struct htt_rx_ring_setup_ring64 rings[0];
299 } __packed;
300 
301 /*
302  * htt_stats_req - request target to send specified statistics
303  *
304  * @msg_type: hardcoded %HTT_H2T_MSG_TYPE_STATS_REQ
305  * @upload_types: see %htt_dbg_stats_type. this is 24bit field actually
306  *	so make sure its little-endian.
307  * @reset_types: see %htt_dbg_stats_type. this is 24bit field actually
308  *	so make sure its little-endian.
309  * @cfg_val: stat_type specific configuration
310  * @stat_type: see %htt_dbg_stats_type
311  * @cookie_lsb: used for confirmation message from target->host
312  * @cookie_msb: ditto as %cookie
313  */
314 struct htt_stats_req {
315 	u8 upload_types[3];
316 	u8 rsvd0;
317 	u8 reset_types[3];
318 	struct {
319 		u8 mpdu_bytes;
320 		u8 mpdu_num_msdus;
321 		u8 msdu_bytes;
322 	} __packed;
323 	u8 stat_type;
324 	__le32 cookie_lsb;
325 	__le32 cookie_msb;
326 } __packed;
327 
328 #define HTT_STATS_REQ_CFG_STAT_TYPE_INVALID 0xff
329 
330 /*
331  * htt_oob_sync_req - request out-of-band sync
332  *
333  * The HTT SYNC tells the target to suspend processing of subsequent
334  * HTT host-to-target messages until some other target agent locally
335  * informs the target HTT FW that the current sync counter is equal to
336  * or greater than (in a modulo sense) the sync counter specified in
337  * the SYNC message.
338  *
339  * This allows other host-target components to synchronize their operation
340  * with HTT, e.g. to ensure that tx frames don't get transmitted until a
341  * security key has been downloaded to and activated by the target.
342  * In the absence of any explicit synchronization counter value
343  * specification, the target HTT FW will use zero as the default current
344  * sync value.
345  *
346  * The HTT target FW will suspend its host->target message processing as long
347  * as 0 < (in-band sync counter - out-of-band sync counter) & 0xff < 128.
348  */
349 struct htt_oob_sync_req {
350 	u8 sync_count;
351 	__le16 rsvd0;
352 } __packed;
353 
354 struct htt_aggr_conf {
355 	u8 max_num_ampdu_subframes;
356 	/* amsdu_subframes is limited by 0x1F mask */
357 	u8 max_num_amsdu_subframes;
358 } __packed;
359 
360 #define HTT_MGMT_FRM_HDR_DOWNLOAD_LEN 32
361 struct htt_mgmt_tx_desc_qca99x0 {
362 	__le32 rate;
363 } __packed;
364 
365 struct htt_mgmt_tx_desc {
366 	u8 pad[sizeof(u32) - sizeof(struct htt_cmd_hdr)];
367 	__le32 msdu_paddr;
368 	__le32 desc_id;
369 	__le32 len;
370 	__le32 vdev_id;
371 	u8 hdr[HTT_MGMT_FRM_HDR_DOWNLOAD_LEN];
372 	union {
373 		struct htt_mgmt_tx_desc_qca99x0 qca99x0;
374 	} __packed;
375 } __packed;
376 
377 enum htt_mgmt_tx_status {
378 	HTT_MGMT_TX_STATUS_OK    = 0,
379 	HTT_MGMT_TX_STATUS_RETRY = 1,
380 	HTT_MGMT_TX_STATUS_DROP  = 2
381 };
382 
383 /*=== target -> host messages ===============================================*/
384 
385 enum htt_main_t2h_msg_type {
386 	HTT_MAIN_T2H_MSG_TYPE_VERSION_CONF             = 0x0,
387 	HTT_MAIN_T2H_MSG_TYPE_RX_IND                   = 0x1,
388 	HTT_MAIN_T2H_MSG_TYPE_RX_FLUSH                 = 0x2,
389 	HTT_MAIN_T2H_MSG_TYPE_PEER_MAP                 = 0x3,
390 	HTT_MAIN_T2H_MSG_TYPE_PEER_UNMAP               = 0x4,
391 	HTT_MAIN_T2H_MSG_TYPE_RX_ADDBA                 = 0x5,
392 	HTT_MAIN_T2H_MSG_TYPE_RX_DELBA                 = 0x6,
393 	HTT_MAIN_T2H_MSG_TYPE_TX_COMPL_IND             = 0x7,
394 	HTT_MAIN_T2H_MSG_TYPE_PKTLOG                   = 0x8,
395 	HTT_MAIN_T2H_MSG_TYPE_STATS_CONF               = 0x9,
396 	HTT_MAIN_T2H_MSG_TYPE_RX_FRAG_IND              = 0xa,
397 	HTT_MAIN_T2H_MSG_TYPE_SEC_IND                  = 0xb,
398 	HTT_MAIN_T2H_MSG_TYPE_TX_INSPECT_IND           = 0xd,
399 	HTT_MAIN_T2H_MSG_TYPE_MGMT_TX_COMPL_IND        = 0xe,
400 	HTT_MAIN_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND     = 0xf,
401 	HTT_MAIN_T2H_MSG_TYPE_RX_PN_IND                = 0x10,
402 	HTT_MAIN_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND   = 0x11,
403 	HTT_MAIN_T2H_MSG_TYPE_TEST,
404 	/* keep this last */
405 	HTT_MAIN_T2H_NUM_MSGS
406 };
407 
408 enum htt_10x_t2h_msg_type {
409 	HTT_10X_T2H_MSG_TYPE_VERSION_CONF              = 0x0,
410 	HTT_10X_T2H_MSG_TYPE_RX_IND                    = 0x1,
411 	HTT_10X_T2H_MSG_TYPE_RX_FLUSH                  = 0x2,
412 	HTT_10X_T2H_MSG_TYPE_PEER_MAP                  = 0x3,
413 	HTT_10X_T2H_MSG_TYPE_PEER_UNMAP                = 0x4,
414 	HTT_10X_T2H_MSG_TYPE_RX_ADDBA                  = 0x5,
415 	HTT_10X_T2H_MSG_TYPE_RX_DELBA                  = 0x6,
416 	HTT_10X_T2H_MSG_TYPE_TX_COMPL_IND              = 0x7,
417 	HTT_10X_T2H_MSG_TYPE_PKTLOG                    = 0x8,
418 	HTT_10X_T2H_MSG_TYPE_STATS_CONF                = 0x9,
419 	HTT_10X_T2H_MSG_TYPE_RX_FRAG_IND               = 0xa,
420 	HTT_10X_T2H_MSG_TYPE_SEC_IND                   = 0xb,
421 	HTT_10X_T2H_MSG_TYPE_RC_UPDATE_IND             = 0xc,
422 	HTT_10X_T2H_MSG_TYPE_TX_INSPECT_IND            = 0xd,
423 	HTT_10X_T2H_MSG_TYPE_TEST                      = 0xe,
424 	HTT_10X_T2H_MSG_TYPE_CHAN_CHANGE               = 0xf,
425 	HTT_10X_T2H_MSG_TYPE_AGGR_CONF                 = 0x11,
426 	HTT_10X_T2H_MSG_TYPE_STATS_NOUPLOAD            = 0x12,
427 	HTT_10X_T2H_MSG_TYPE_MGMT_TX_COMPL_IND         = 0x13,
428 	/* keep this last */
429 	HTT_10X_T2H_NUM_MSGS
430 };
431 
432 enum htt_tlv_t2h_msg_type {
433 	HTT_TLV_T2H_MSG_TYPE_VERSION_CONF              = 0x0,
434 	HTT_TLV_T2H_MSG_TYPE_RX_IND                    = 0x1,
435 	HTT_TLV_T2H_MSG_TYPE_RX_FLUSH                  = 0x2,
436 	HTT_TLV_T2H_MSG_TYPE_PEER_MAP                  = 0x3,
437 	HTT_TLV_T2H_MSG_TYPE_PEER_UNMAP                = 0x4,
438 	HTT_TLV_T2H_MSG_TYPE_RX_ADDBA                  = 0x5,
439 	HTT_TLV_T2H_MSG_TYPE_RX_DELBA                  = 0x6,
440 	HTT_TLV_T2H_MSG_TYPE_TX_COMPL_IND              = 0x7,
441 	HTT_TLV_T2H_MSG_TYPE_PKTLOG                    = 0x8,
442 	HTT_TLV_T2H_MSG_TYPE_STATS_CONF                = 0x9,
443 	HTT_TLV_T2H_MSG_TYPE_RX_FRAG_IND               = 0xa,
444 	HTT_TLV_T2H_MSG_TYPE_SEC_IND                   = 0xb,
445 	HTT_TLV_T2H_MSG_TYPE_RC_UPDATE_IND             = 0xc, /* deprecated */
446 	HTT_TLV_T2H_MSG_TYPE_TX_INSPECT_IND            = 0xd,
447 	HTT_TLV_T2H_MSG_TYPE_MGMT_TX_COMPL_IND         = 0xe,
448 	HTT_TLV_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND      = 0xf,
449 	HTT_TLV_T2H_MSG_TYPE_RX_PN_IND                 = 0x10,
450 	HTT_TLV_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND    = 0x11,
451 	HTT_TLV_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND       = 0x12,
452 	/* 0x13 reservd */
453 	HTT_TLV_T2H_MSG_TYPE_WDI_IPA_OP_RESPONSE       = 0x14,
454 	HTT_TLV_T2H_MSG_TYPE_CHAN_CHANGE               = 0x15,
455 	HTT_TLV_T2H_MSG_TYPE_RX_OFLD_PKT_ERR           = 0x16,
456 	HTT_TLV_T2H_MSG_TYPE_TEST,
457 	/* keep this last */
458 	HTT_TLV_T2H_NUM_MSGS
459 };
460 
461 enum htt_10_4_t2h_msg_type {
462 	HTT_10_4_T2H_MSG_TYPE_VERSION_CONF           = 0x0,
463 	HTT_10_4_T2H_MSG_TYPE_RX_IND                 = 0x1,
464 	HTT_10_4_T2H_MSG_TYPE_RX_FLUSH               = 0x2,
465 	HTT_10_4_T2H_MSG_TYPE_PEER_MAP               = 0x3,
466 	HTT_10_4_T2H_MSG_TYPE_PEER_UNMAP             = 0x4,
467 	HTT_10_4_T2H_MSG_TYPE_RX_ADDBA               = 0x5,
468 	HTT_10_4_T2H_MSG_TYPE_RX_DELBA               = 0x6,
469 	HTT_10_4_T2H_MSG_TYPE_TX_COMPL_IND           = 0x7,
470 	HTT_10_4_T2H_MSG_TYPE_PKTLOG                 = 0x8,
471 	HTT_10_4_T2H_MSG_TYPE_STATS_CONF             = 0x9,
472 	HTT_10_4_T2H_MSG_TYPE_RX_FRAG_IND            = 0xa,
473 	HTT_10_4_T2H_MSG_TYPE_SEC_IND                = 0xb,
474 	HTT_10_4_T2H_MSG_TYPE_RC_UPDATE_IND          = 0xc,
475 	HTT_10_4_T2H_MSG_TYPE_TX_INSPECT_IND         = 0xd,
476 	HTT_10_4_T2H_MSG_TYPE_MGMT_TX_COMPL_IND      = 0xe,
477 	HTT_10_4_T2H_MSG_TYPE_CHAN_CHANGE            = 0xf,
478 	HTT_10_4_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND   = 0x10,
479 	HTT_10_4_T2H_MSG_TYPE_RX_PN_IND              = 0x11,
480 	HTT_10_4_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND = 0x12,
481 	HTT_10_4_T2H_MSG_TYPE_TEST                   = 0x13,
482 	HTT_10_4_T2H_MSG_TYPE_EN_STATS               = 0x14,
483 	HTT_10_4_T2H_MSG_TYPE_AGGR_CONF              = 0x15,
484 	HTT_10_4_T2H_MSG_TYPE_TX_FETCH_IND           = 0x16,
485 	HTT_10_4_T2H_MSG_TYPE_TX_FETCH_CONFIRM       = 0x17,
486 	HTT_10_4_T2H_MSG_TYPE_STATS_NOUPLOAD         = 0x18,
487 	/* 0x19 to 0x2f are reserved */
488 	HTT_10_4_T2H_MSG_TYPE_TX_MODE_SWITCH_IND     = 0x30,
489 	HTT_10_4_T2H_MSG_TYPE_PEER_STATS	     = 0x31,
490 	/* keep this last */
491 	HTT_10_4_T2H_NUM_MSGS
492 };
493 
494 enum htt_t2h_msg_type {
495 	HTT_T2H_MSG_TYPE_VERSION_CONF,
496 	HTT_T2H_MSG_TYPE_RX_IND,
497 	HTT_T2H_MSG_TYPE_RX_FLUSH,
498 	HTT_T2H_MSG_TYPE_PEER_MAP,
499 	HTT_T2H_MSG_TYPE_PEER_UNMAP,
500 	HTT_T2H_MSG_TYPE_RX_ADDBA,
501 	HTT_T2H_MSG_TYPE_RX_DELBA,
502 	HTT_T2H_MSG_TYPE_TX_COMPL_IND,
503 	HTT_T2H_MSG_TYPE_PKTLOG,
504 	HTT_T2H_MSG_TYPE_STATS_CONF,
505 	HTT_T2H_MSG_TYPE_RX_FRAG_IND,
506 	HTT_T2H_MSG_TYPE_SEC_IND,
507 	HTT_T2H_MSG_TYPE_RC_UPDATE_IND,
508 	HTT_T2H_MSG_TYPE_TX_INSPECT_IND,
509 	HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION,
510 	HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND,
511 	HTT_T2H_MSG_TYPE_RX_PN_IND,
512 	HTT_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND,
513 	HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND,
514 	HTT_T2H_MSG_TYPE_WDI_IPA_OP_RESPONSE,
515 	HTT_T2H_MSG_TYPE_CHAN_CHANGE,
516 	HTT_T2H_MSG_TYPE_RX_OFLD_PKT_ERR,
517 	HTT_T2H_MSG_TYPE_AGGR_CONF,
518 	HTT_T2H_MSG_TYPE_STATS_NOUPLOAD,
519 	HTT_T2H_MSG_TYPE_TEST,
520 	HTT_T2H_MSG_TYPE_EN_STATS,
521 	HTT_T2H_MSG_TYPE_TX_FETCH_IND,
522 	HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM,
523 	HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND,
524 	HTT_T2H_MSG_TYPE_PEER_STATS,
525 	/* keep this last */
526 	HTT_T2H_NUM_MSGS
527 };
528 
529 /*
530  * htt_resp_hdr - header for target-to-host messages
531  *
532  * msg_type: see htt_t2h_msg_type
533  */
534 struct htt_resp_hdr {
535 	u8 msg_type;
536 } __packed;
537 
538 #define HTT_RESP_HDR_MSG_TYPE_OFFSET 0
539 #define HTT_RESP_HDR_MSG_TYPE_MASK   0xff
540 #define HTT_RESP_HDR_MSG_TYPE_LSB    0
541 
542 /* htt_ver_resp - response sent for htt_ver_req */
543 struct htt_ver_resp {
544 	u8 minor;
545 	u8 major;
546 	u8 rsvd0;
547 } __packed;
548 
549 #define HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI BIT(0)
550 
551 #define HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK	GENMASK(7, 0)
552 
553 struct htt_mgmt_tx_completion {
554 	u8 rsvd0;
555 	u8 rsvd1;
556 	u8 flags;
557 	__le32 desc_id;
558 	__le32 status;
559 	__le32 ppdu_id;
560 	__le32 info;
561 } __packed;
562 
563 #define HTT_RX_INDICATION_INFO0_EXT_TID_MASK  (0x1F)
564 #define HTT_RX_INDICATION_INFO0_EXT_TID_LSB   (0)
565 #define HTT_RX_INDICATION_INFO0_FLUSH_VALID   (1 << 5)
566 #define HTT_RX_INDICATION_INFO0_RELEASE_VALID (1 << 6)
567 
568 #define HTT_RX_INDICATION_INFO1_FLUSH_START_SEQNO_MASK   0x0000003F
569 #define HTT_RX_INDICATION_INFO1_FLUSH_START_SEQNO_LSB    0
570 #define HTT_RX_INDICATION_INFO1_FLUSH_END_SEQNO_MASK     0x00000FC0
571 #define HTT_RX_INDICATION_INFO1_FLUSH_END_SEQNO_LSB      6
572 #define HTT_RX_INDICATION_INFO1_RELEASE_START_SEQNO_MASK 0x0003F000
573 #define HTT_RX_INDICATION_INFO1_RELEASE_START_SEQNO_LSB  12
574 #define HTT_RX_INDICATION_INFO1_RELEASE_END_SEQNO_MASK   0x00FC0000
575 #define HTT_RX_INDICATION_INFO1_RELEASE_END_SEQNO_LSB    18
576 #define HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES_MASK     0xFF000000
577 #define HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES_LSB      24
578 
579 #define HTT_TX_CMPL_FLAG_DATA_RSSI BIT(0)
580 
581 struct htt_rx_indication_hdr {
582 	u8 info0; /* %HTT_RX_INDICATION_INFO0_ */
583 	__le16 peer_id;
584 	__le32 info1; /* %HTT_RX_INDICATION_INFO1_ */
585 } __packed;
586 
587 #define HTT_RX_INDICATION_INFO0_PHY_ERR_VALID    (1 << 0)
588 #define HTT_RX_INDICATION_INFO0_LEGACY_RATE_MASK (0x1E)
589 #define HTT_RX_INDICATION_INFO0_LEGACY_RATE_LSB  (1)
590 #define HTT_RX_INDICATION_INFO0_LEGACY_RATE_CCK  (1 << 5)
591 #define HTT_RX_INDICATION_INFO0_END_VALID        (1 << 6)
592 #define HTT_RX_INDICATION_INFO0_START_VALID      (1 << 7)
593 
594 #define HTT_RX_INDICATION_INFO1_VHT_SIG_A1_MASK    0x00FFFFFF
595 #define HTT_RX_INDICATION_INFO1_VHT_SIG_A1_LSB     0
596 #define HTT_RX_INDICATION_INFO1_PREAMBLE_TYPE_MASK 0xFF000000
597 #define HTT_RX_INDICATION_INFO1_PREAMBLE_TYPE_LSB  24
598 
599 #define HTT_RX_INDICATION_INFO2_VHT_SIG_A1_MASK 0x00FFFFFF
600 #define HTT_RX_INDICATION_INFO2_VHT_SIG_A1_LSB  0
601 #define HTT_RX_INDICATION_INFO2_SERVICE_MASK    0xFF000000
602 #define HTT_RX_INDICATION_INFO2_SERVICE_LSB     24
603 
604 enum htt_rx_legacy_rate {
605 	HTT_RX_OFDM_48 = 0,
606 	HTT_RX_OFDM_24 = 1,
607 	HTT_RX_OFDM_12,
608 	HTT_RX_OFDM_6,
609 	HTT_RX_OFDM_54,
610 	HTT_RX_OFDM_36,
611 	HTT_RX_OFDM_18,
612 	HTT_RX_OFDM_9,
613 
614 	/* long preamble */
615 	HTT_RX_CCK_11_LP = 0,
616 	HTT_RX_CCK_5_5_LP = 1,
617 	HTT_RX_CCK_2_LP,
618 	HTT_RX_CCK_1_LP,
619 	/* short preamble */
620 	HTT_RX_CCK_11_SP,
621 	HTT_RX_CCK_5_5_SP,
622 	HTT_RX_CCK_2_SP
623 };
624 
625 enum htt_rx_legacy_rate_type {
626 	HTT_RX_LEGACY_RATE_OFDM = 0,
627 	HTT_RX_LEGACY_RATE_CCK
628 };
629 
630 enum htt_rx_preamble_type {
631 	HTT_RX_LEGACY        = 0x4,
632 	HTT_RX_HT            = 0x8,
633 	HTT_RX_HT_WITH_TXBF  = 0x9,
634 	HTT_RX_VHT           = 0xC,
635 	HTT_RX_VHT_WITH_TXBF = 0xD,
636 };
637 
638 /*
639  * Fields: phy_err_valid, phy_err_code, tsf,
640  * usec_timestamp, sub_usec_timestamp
641  * ..are valid only if end_valid == 1.
642  *
643  * Fields: rssi_chains, legacy_rate_type,
644  * legacy_rate_cck, preamble_type, service,
645  * vht_sig_*
646  * ..are valid only if start_valid == 1;
647  */
648 struct htt_rx_indication_ppdu {
649 	u8 combined_rssi;
650 	u8 sub_usec_timestamp;
651 	u8 phy_err_code;
652 	u8 info0; /* HTT_RX_INDICATION_INFO0_ */
653 	struct {
654 		u8 pri20_db;
655 		u8 ext20_db;
656 		u8 ext40_db;
657 		u8 ext80_db;
658 	} __packed rssi_chains[4];
659 	__le32 tsf;
660 	__le32 usec_timestamp;
661 	__le32 info1; /* HTT_RX_INDICATION_INFO1_ */
662 	__le32 info2; /* HTT_RX_INDICATION_INFO2_ */
663 } __packed;
664 
665 enum htt_rx_mpdu_status {
666 	HTT_RX_IND_MPDU_STATUS_UNKNOWN = 0x0,
667 	HTT_RX_IND_MPDU_STATUS_OK,
668 	HTT_RX_IND_MPDU_STATUS_ERR_FCS,
669 	HTT_RX_IND_MPDU_STATUS_ERR_DUP,
670 	HTT_RX_IND_MPDU_STATUS_ERR_REPLAY,
671 	HTT_RX_IND_MPDU_STATUS_ERR_INV_PEER,
672 	/* only accept EAPOL frames */
673 	HTT_RX_IND_MPDU_STATUS_UNAUTH_PEER,
674 	HTT_RX_IND_MPDU_STATUS_OUT_OF_SYNC,
675 	/* Non-data in promiscuous mode */
676 	HTT_RX_IND_MPDU_STATUS_MGMT_CTRL,
677 	HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR,
678 	HTT_RX_IND_MPDU_STATUS_DECRYPT_ERR,
679 	HTT_RX_IND_MPDU_STATUS_MPDU_LENGTH_ERR,
680 	HTT_RX_IND_MPDU_STATUS_ENCRYPT_REQUIRED_ERR,
681 	HTT_RX_IND_MPDU_STATUS_PRIVACY_ERR,
682 
683 	/*
684 	 * MISC: discard for unspecified reasons.
685 	 * Leave this enum value last.
686 	 */
687 	HTT_RX_IND_MPDU_STATUS_ERR_MISC = 0xFF
688 };
689 
690 struct htt_rx_indication_mpdu_range {
691 	u8 mpdu_count;
692 	u8 mpdu_range_status; /* %htt_rx_mpdu_status */
693 	u8 pad0;
694 	u8 pad1;
695 } __packed;
696 
697 struct htt_rx_indication_prefix {
698 	__le16 fw_rx_desc_bytes;
699 	u8 pad0;
700 	u8 pad1;
701 };
702 
703 struct htt_rx_indication {
704 	struct htt_rx_indication_hdr hdr;
705 	struct htt_rx_indication_ppdu ppdu;
706 	struct htt_rx_indication_prefix prefix;
707 
708 	/*
709 	 * the following fields are both dynamically sized, so
710 	 * take care addressing them
711 	 */
712 
713 	/* the size of this is %fw_rx_desc_bytes */
714 	struct fw_rx_desc_base fw_desc;
715 
716 	/*
717 	 * %mpdu_ranges starts after &%prefix + roundup(%fw_rx_desc_bytes, 4)
718 	 * and has %num_mpdu_ranges elements.
719 	 */
720 	struct htt_rx_indication_mpdu_range mpdu_ranges[0];
721 } __packed;
722 
723 /* High latency version of the RX indication */
724 struct htt_rx_indication_hl {
725 	struct htt_rx_indication_hdr hdr;
726 	struct htt_rx_indication_ppdu ppdu;
727 	struct htt_rx_indication_prefix prefix;
728 	struct fw_rx_desc_hl fw_desc;
729 	struct htt_rx_indication_mpdu_range mpdu_ranges[0];
730 } __packed;
731 
732 static inline struct htt_rx_indication_mpdu_range *
733 		htt_rx_ind_get_mpdu_ranges(struct htt_rx_indication *rx_ind)
734 {
735 	void *ptr = rx_ind;
736 
737 	ptr += sizeof(rx_ind->hdr)
738 	     + sizeof(rx_ind->ppdu)
739 	     + sizeof(rx_ind->prefix)
740 	     + roundup(__le16_to_cpu(rx_ind->prefix.fw_rx_desc_bytes), 4);
741 	return ptr;
742 }
743 
744 static inline struct htt_rx_indication_mpdu_range *
745 	htt_rx_ind_get_mpdu_ranges_hl(struct htt_rx_indication_hl *rx_ind)
746 {
747 	void *ptr = rx_ind;
748 
749 	ptr += sizeof(rx_ind->hdr)
750 	     + sizeof(rx_ind->ppdu)
751 	     + sizeof(rx_ind->prefix)
752 	     + sizeof(rx_ind->fw_desc);
753 	return ptr;
754 }
755 
756 enum htt_rx_flush_mpdu_status {
757 	HTT_RX_FLUSH_MPDU_DISCARD = 0,
758 	HTT_RX_FLUSH_MPDU_REORDER = 1,
759 };
760 
761 /*
762  * htt_rx_flush - discard or reorder given range of mpdus
763  *
764  * Note: host must check if all sequence numbers between
765  *	[seq_num_start, seq_num_end-1] are valid.
766  */
767 struct htt_rx_flush {
768 	__le16 peer_id;
769 	u8 tid;
770 	u8 rsvd0;
771 	u8 mpdu_status; /* %htt_rx_flush_mpdu_status */
772 	u8 seq_num_start; /* it is 6 LSBs of 802.11 seq no */
773 	u8 seq_num_end; /* it is 6 LSBs of 802.11 seq no */
774 };
775 
776 struct htt_rx_peer_map {
777 	u8 vdev_id;
778 	__le16 peer_id;
779 	u8 addr[6];
780 	u8 rsvd0;
781 	u8 rsvd1;
782 } __packed;
783 
784 struct htt_rx_peer_unmap {
785 	u8 rsvd0;
786 	__le16 peer_id;
787 } __packed;
788 
789 enum htt_security_types {
790 	HTT_SECURITY_NONE,
791 	HTT_SECURITY_WEP128,
792 	HTT_SECURITY_WEP104,
793 	HTT_SECURITY_WEP40,
794 	HTT_SECURITY_TKIP,
795 	HTT_SECURITY_TKIP_NOMIC,
796 	HTT_SECURITY_AES_CCMP,
797 	HTT_SECURITY_WAPI,
798 
799 	HTT_NUM_SECURITY_TYPES /* keep this last! */
800 };
801 
802 enum htt_security_flags {
803 #define HTT_SECURITY_TYPE_MASK 0x7F
804 #define HTT_SECURITY_TYPE_LSB  0
805 	HTT_SECURITY_IS_UNICAST = 1 << 7
806 };
807 
808 struct htt_security_indication {
809 	union {
810 		/* dont use bitfields; undefined behaviour */
811 		u8 flags; /* %htt_security_flags */
812 		struct {
813 			u8 security_type:7, /* %htt_security_types */
814 			   is_unicast:1;
815 		} __packed;
816 	} __packed;
817 	__le16 peer_id;
818 	u8 michael_key[8];
819 	u8 wapi_rsc[16];
820 } __packed;
821 
822 #define HTT_RX_BA_INFO0_TID_MASK     0x000F
823 #define HTT_RX_BA_INFO0_TID_LSB      0
824 #define HTT_RX_BA_INFO0_PEER_ID_MASK 0xFFF0
825 #define HTT_RX_BA_INFO0_PEER_ID_LSB  4
826 
827 struct htt_rx_addba {
828 	u8 window_size;
829 	__le16 info0; /* %HTT_RX_BA_INFO0_ */
830 } __packed;
831 
832 struct htt_rx_delba {
833 	u8 rsvd0;
834 	__le16 info0; /* %HTT_RX_BA_INFO0_ */
835 } __packed;
836 
837 enum htt_data_tx_status {
838 	HTT_DATA_TX_STATUS_OK            = 0,
839 	HTT_DATA_TX_STATUS_DISCARD       = 1,
840 	HTT_DATA_TX_STATUS_NO_ACK        = 2,
841 	HTT_DATA_TX_STATUS_POSTPONE      = 3, /* HL only */
842 	HTT_DATA_TX_STATUS_DOWNLOAD_FAIL = 128
843 };
844 
845 enum htt_data_tx_flags {
846 #define HTT_DATA_TX_STATUS_MASK 0x07
847 #define HTT_DATA_TX_STATUS_LSB  0
848 #define HTT_DATA_TX_TID_MASK    0x78
849 #define HTT_DATA_TX_TID_LSB     3
850 	HTT_DATA_TX_TID_INVALID = 1 << 7
851 };
852 
853 #define HTT_TX_COMPL_INV_MSDU_ID 0xFFFF
854 
855 struct htt_data_tx_completion {
856 	union {
857 		u8 flags;
858 		struct {
859 			u8 status:3,
860 			   tid:4,
861 			   tid_invalid:1;
862 		} __packed;
863 	} __packed;
864 	u8 num_msdus;
865 	u8 flags2; /* HTT_TX_CMPL_FLAG_DATA_RSSI */
866 	__le16 msdus[0]; /* variable length based on %num_msdus */
867 } __packed;
868 
869 struct htt_tx_compl_ind_base {
870 	u32 hdr;
871 	u16 payload[1/*or more*/];
872 } __packed;
873 
874 struct htt_rc_tx_done_params {
875 	u32 rate_code;
876 	u32 rate_code_flags;
877 	u32 flags;
878 	u32 num_enqued; /* 1 for non-AMPDU */
879 	u32 num_retries;
880 	u32 num_failed; /* for AMPDU */
881 	u32 ack_rssi;
882 	u32 time_stamp;
883 	u32 is_probe;
884 };
885 
886 struct htt_rc_update {
887 	u8 vdev_id;
888 	__le16 peer_id;
889 	u8 addr[6];
890 	u8 num_elems;
891 	u8 rsvd0;
892 	struct htt_rc_tx_done_params params[0]; /* variable length %num_elems */
893 } __packed;
894 
895 /* see htt_rx_indication for similar fields and descriptions */
896 struct htt_rx_fragment_indication {
897 	union {
898 		u8 info0; /* %HTT_RX_FRAG_IND_INFO0_ */
899 		struct {
900 			u8 ext_tid:5,
901 			   flush_valid:1;
902 		} __packed;
903 	} __packed;
904 	__le16 peer_id;
905 	__le32 info1; /* %HTT_RX_FRAG_IND_INFO1_ */
906 	__le16 fw_rx_desc_bytes;
907 	__le16 rsvd0;
908 
909 	u8 fw_msdu_rx_desc[0];
910 } __packed;
911 
912 #define HTT_RX_FRAG_IND_INFO0_EXT_TID_MASK     0x1F
913 #define HTT_RX_FRAG_IND_INFO0_EXT_TID_LSB      0
914 #define HTT_RX_FRAG_IND_INFO0_FLUSH_VALID_MASK 0x20
915 #define HTT_RX_FRAG_IND_INFO0_FLUSH_VALID_LSB  5
916 
917 #define HTT_RX_FRAG_IND_INFO1_FLUSH_SEQ_NUM_START_MASK 0x0000003F
918 #define HTT_RX_FRAG_IND_INFO1_FLUSH_SEQ_NUM_START_LSB  0
919 #define HTT_RX_FRAG_IND_INFO1_FLUSH_SEQ_NUM_END_MASK   0x00000FC0
920 #define HTT_RX_FRAG_IND_INFO1_FLUSH_SEQ_NUM_END_LSB    6
921 
922 struct htt_rx_pn_ind {
923 	__le16 peer_id;
924 	u8 tid;
925 	u8 seqno_start;
926 	u8 seqno_end;
927 	u8 pn_ie_count;
928 	u8 reserved;
929 	u8 pn_ies[0];
930 } __packed;
931 
932 struct htt_rx_offload_msdu {
933 	__le16 msdu_len;
934 	__le16 peer_id;
935 	u8 vdev_id;
936 	u8 tid;
937 	u8 fw_desc;
938 	u8 payload[0];
939 } __packed;
940 
941 struct htt_rx_offload_ind {
942 	u8 reserved;
943 	__le16 msdu_count;
944 } __packed;
945 
946 struct htt_rx_in_ord_msdu_desc {
947 	__le32 msdu_paddr;
948 	__le16 msdu_len;
949 	u8 fw_desc;
950 	u8 reserved;
951 } __packed;
952 
953 struct htt_rx_in_ord_msdu_desc_ext {
954 	__le64 msdu_paddr;
955 	__le16 msdu_len;
956 	u8 fw_desc;
957 	u8 reserved;
958 } __packed;
959 
960 struct htt_rx_in_ord_ind {
961 	u8 info;
962 	__le16 peer_id;
963 	u8 vdev_id;
964 	u8 reserved;
965 	__le16 msdu_count;
966 	union {
967 		struct htt_rx_in_ord_msdu_desc msdu_descs32[0];
968 		struct htt_rx_in_ord_msdu_desc_ext msdu_descs64[0];
969 	} __packed;
970 } __packed;
971 
972 #define HTT_RX_IN_ORD_IND_INFO_TID_MASK		0x0000001f
973 #define HTT_RX_IN_ORD_IND_INFO_TID_LSB		0
974 #define HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK	0x00000020
975 #define HTT_RX_IN_ORD_IND_INFO_OFFLOAD_LSB	5
976 #define HTT_RX_IN_ORD_IND_INFO_FRAG_MASK	0x00000040
977 #define HTT_RX_IN_ORD_IND_INFO_FRAG_LSB		6
978 
979 /*
980  * target -> host test message definition
981  *
982  * The following field definitions describe the format of the test
983  * message sent from the target to the host.
984  * The message consists of a 4-octet header, followed by a variable
985  * number of 32-bit integer values, followed by a variable number
986  * of 8-bit character values.
987  *
988  * |31                         16|15           8|7            0|
989  * |-----------------------------------------------------------|
990  * |          num chars          |   num ints   |   msg type   |
991  * |-----------------------------------------------------------|
992  * |                           int 0                           |
993  * |-----------------------------------------------------------|
994  * |                           int 1                           |
995  * |-----------------------------------------------------------|
996  * |                            ...                            |
997  * |-----------------------------------------------------------|
998  * |    char 3    |    char 2    |    char 1    |    char 0    |
999  * |-----------------------------------------------------------|
1000  * |              |              |      ...     |    char 4    |
1001  * |-----------------------------------------------------------|
1002  *   - MSG_TYPE
1003  *     Bits 7:0
1004  *     Purpose: identifies this as a test message
1005  *     Value: HTT_MSG_TYPE_TEST
1006  *   - NUM_INTS
1007  *     Bits 15:8
1008  *     Purpose: indicate how many 32-bit integers follow the message header
1009  *   - NUM_CHARS
1010  *     Bits 31:16
1011  *     Purpose: indicate how many 8-bit characters follow the series of integers
1012  */
1013 struct htt_rx_test {
1014 	u8 num_ints;
1015 	__le16 num_chars;
1016 
1017 	/* payload consists of 2 lists:
1018 	 *  a) num_ints * sizeof(__le32)
1019 	 *  b) num_chars * sizeof(u8) aligned to 4bytes
1020 	 */
1021 	u8 payload[0];
1022 } __packed;
1023 
1024 static inline __le32 *htt_rx_test_get_ints(struct htt_rx_test *rx_test)
1025 {
1026 	return (__le32 *)rx_test->payload;
1027 }
1028 
1029 static inline u8 *htt_rx_test_get_chars(struct htt_rx_test *rx_test)
1030 {
1031 	return rx_test->payload + (rx_test->num_ints * sizeof(__le32));
1032 }
1033 
1034 /*
1035  * target -> host packet log message
1036  *
1037  * The following field definitions describe the format of the packet log
1038  * message sent from the target to the host.
1039  * The message consists of a 4-octet header,followed by a variable number
1040  * of 32-bit character values.
1041  *
1042  * |31          24|23          16|15           8|7            0|
1043  * |-----------------------------------------------------------|
1044  * |              |              |              |   msg type   |
1045  * |-----------------------------------------------------------|
1046  * |                        payload                            |
1047  * |-----------------------------------------------------------|
1048  *   - MSG_TYPE
1049  *     Bits 7:0
1050  *     Purpose: identifies this as a test message
1051  *     Value: HTT_MSG_TYPE_PACKETLOG
1052  */
1053 struct htt_pktlog_msg {
1054 	u8 pad[3];
1055 	u8 payload[0];
1056 } __packed;
1057 
1058 struct htt_dbg_stats_rx_reorder_stats {
1059 	/* Non QoS MPDUs received */
1060 	__le32 deliver_non_qos;
1061 
1062 	/* MPDUs received in-order */
1063 	__le32 deliver_in_order;
1064 
1065 	/* Flush due to reorder timer expired */
1066 	__le32 deliver_flush_timeout;
1067 
1068 	/* Flush due to move out of window */
1069 	__le32 deliver_flush_oow;
1070 
1071 	/* Flush due to DELBA */
1072 	__le32 deliver_flush_delba;
1073 
1074 	/* MPDUs dropped due to FCS error */
1075 	__le32 fcs_error;
1076 
1077 	/* MPDUs dropped due to monitor mode non-data packet */
1078 	__le32 mgmt_ctrl;
1079 
1080 	/* MPDUs dropped due to invalid peer */
1081 	__le32 invalid_peer;
1082 
1083 	/* MPDUs dropped due to duplication (non aggregation) */
1084 	__le32 dup_non_aggr;
1085 
1086 	/* MPDUs dropped due to processed before */
1087 	__le32 dup_past;
1088 
1089 	/* MPDUs dropped due to duplicate in reorder queue */
1090 	__le32 dup_in_reorder;
1091 
1092 	/* Reorder timeout happened */
1093 	__le32 reorder_timeout;
1094 
1095 	/* invalid bar ssn */
1096 	__le32 invalid_bar_ssn;
1097 
1098 	/* reorder reset due to bar ssn */
1099 	__le32 ssn_reset;
1100 };
1101 
1102 struct htt_dbg_stats_wal_tx_stats {
1103 	/* Num HTT cookies queued to dispatch list */
1104 	__le32 comp_queued;
1105 
1106 	/* Num HTT cookies dispatched */
1107 	__le32 comp_delivered;
1108 
1109 	/* Num MSDU queued to WAL */
1110 	__le32 msdu_enqued;
1111 
1112 	/* Num MPDU queue to WAL */
1113 	__le32 mpdu_enqued;
1114 
1115 	/* Num MSDUs dropped by WMM limit */
1116 	__le32 wmm_drop;
1117 
1118 	/* Num Local frames queued */
1119 	__le32 local_enqued;
1120 
1121 	/* Num Local frames done */
1122 	__le32 local_freed;
1123 
1124 	/* Num queued to HW */
1125 	__le32 hw_queued;
1126 
1127 	/* Num PPDU reaped from HW */
1128 	__le32 hw_reaped;
1129 
1130 	/* Num underruns */
1131 	__le32 underrun;
1132 
1133 	/* Num PPDUs cleaned up in TX abort */
1134 	__le32 tx_abort;
1135 
1136 	/* Num MPDUs requed by SW */
1137 	__le32 mpdus_requed;
1138 
1139 	/* excessive retries */
1140 	__le32 tx_ko;
1141 
1142 	/* data hw rate code */
1143 	__le32 data_rc;
1144 
1145 	/* Scheduler self triggers */
1146 	__le32 self_triggers;
1147 
1148 	/* frames dropped due to excessive sw retries */
1149 	__le32 sw_retry_failure;
1150 
1151 	/* illegal rate phy errors  */
1152 	__le32 illgl_rate_phy_err;
1153 
1154 	/* wal pdev continuous xretry */
1155 	__le32 pdev_cont_xretry;
1156 
1157 	/* wal pdev continuous xretry */
1158 	__le32 pdev_tx_timeout;
1159 
1160 	/* wal pdev resets  */
1161 	__le32 pdev_resets;
1162 
1163 	__le32 phy_underrun;
1164 
1165 	/* MPDU is more than txop limit */
1166 	__le32 txop_ovf;
1167 } __packed;
1168 
1169 struct htt_dbg_stats_wal_rx_stats {
1170 	/* Cnts any change in ring routing mid-ppdu */
1171 	__le32 mid_ppdu_route_change;
1172 
1173 	/* Total number of statuses processed */
1174 	__le32 status_rcvd;
1175 
1176 	/* Extra frags on rings 0-3 */
1177 	__le32 r0_frags;
1178 	__le32 r1_frags;
1179 	__le32 r2_frags;
1180 	__le32 r3_frags;
1181 
1182 	/* MSDUs / MPDUs delivered to HTT */
1183 	__le32 htt_msdus;
1184 	__le32 htt_mpdus;
1185 
1186 	/* MSDUs / MPDUs delivered to local stack */
1187 	__le32 loc_msdus;
1188 	__le32 loc_mpdus;
1189 
1190 	/* AMSDUs that have more MSDUs than the status ring size */
1191 	__le32 oversize_amsdu;
1192 
1193 	/* Number of PHY errors */
1194 	__le32 phy_errs;
1195 
1196 	/* Number of PHY errors drops */
1197 	__le32 phy_err_drop;
1198 
1199 	/* Number of mpdu errors - FCS, MIC, ENC etc. */
1200 	__le32 mpdu_errs;
1201 } __packed;
1202 
1203 struct htt_dbg_stats_wal_peer_stats {
1204 	__le32 dummy; /* REMOVE THIS ONCE REAL PEER STAT COUNTERS ARE ADDED */
1205 } __packed;
1206 
1207 struct htt_dbg_stats_wal_pdev_txrx {
1208 	struct htt_dbg_stats_wal_tx_stats tx_stats;
1209 	struct htt_dbg_stats_wal_rx_stats rx_stats;
1210 	struct htt_dbg_stats_wal_peer_stats peer_stats;
1211 } __packed;
1212 
1213 struct htt_dbg_stats_rx_rate_info {
1214 	__le32 mcs[10];
1215 	__le32 sgi[10];
1216 	__le32 nss[4];
1217 	__le32 stbc[10];
1218 	__le32 bw[3];
1219 	__le32 pream[6];
1220 	__le32 ldpc;
1221 	__le32 txbf;
1222 };
1223 
1224 /*
1225  * htt_dbg_stats_status -
1226  * present -     The requested stats have been delivered in full.
1227  *               This indicates that either the stats information was contained
1228  *               in its entirety within this message, or else this message
1229  *               completes the delivery of the requested stats info that was
1230  *               partially delivered through earlier STATS_CONF messages.
1231  * partial -     The requested stats have been delivered in part.
1232  *               One or more subsequent STATS_CONF messages with the same
1233  *               cookie value will be sent to deliver the remainder of the
1234  *               information.
1235  * error -       The requested stats could not be delivered, for example due
1236  *               to a shortage of memory to construct a message holding the
1237  *               requested stats.
1238  * invalid -     The requested stat type is either not recognized, or the
1239  *               target is configured to not gather the stats type in question.
1240  * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1241  * series_done - This special value indicates that no further stats info
1242  *               elements are present within a series of stats info elems
1243  *               (within a stats upload confirmation message).
1244  */
1245 enum htt_dbg_stats_status {
1246 	HTT_DBG_STATS_STATUS_PRESENT     = 0,
1247 	HTT_DBG_STATS_STATUS_PARTIAL     = 1,
1248 	HTT_DBG_STATS_STATUS_ERROR       = 2,
1249 	HTT_DBG_STATS_STATUS_INVALID     = 3,
1250 	HTT_DBG_STATS_STATUS_SERIES_DONE = 7
1251 };
1252 
1253 /*
1254  * target -> host statistics upload
1255  *
1256  * The following field definitions describe the format of the HTT target
1257  * to host stats upload confirmation message.
1258  * The message contains a cookie echoed from the HTT host->target stats
1259  * upload request, which identifies which request the confirmation is
1260  * for, and a series of tag-length-value stats information elements.
1261  * The tag-length header for each stats info element also includes a
1262  * status field, to indicate whether the request for the stat type in
1263  * question was fully met, partially met, unable to be met, or invalid
1264  * (if the stat type in question is disabled in the target).
1265  * A special value of all 1's in this status field is used to indicate
1266  * the end of the series of stats info elements.
1267  *
1268  *
1269  * |31                         16|15           8|7   5|4       0|
1270  * |------------------------------------------------------------|
1271  * |                  reserved                  |    msg type   |
1272  * |------------------------------------------------------------|
1273  * |                        cookie LSBs                         |
1274  * |------------------------------------------------------------|
1275  * |                        cookie MSBs                         |
1276  * |------------------------------------------------------------|
1277  * |      stats entry length     |   reserved   |  S  |stat type|
1278  * |------------------------------------------------------------|
1279  * |                                                            |
1280  * |                  type-specific stats info                  |
1281  * |                                                            |
1282  * |------------------------------------------------------------|
1283  * |      stats entry length     |   reserved   |  S  |stat type|
1284  * |------------------------------------------------------------|
1285  * |                                                            |
1286  * |                  type-specific stats info                  |
1287  * |                                                            |
1288  * |------------------------------------------------------------|
1289  * |              n/a            |   reserved   | 111 |   n/a   |
1290  * |------------------------------------------------------------|
1291  * Header fields:
1292  *  - MSG_TYPE
1293  *    Bits 7:0
1294  *    Purpose: identifies this is a statistics upload confirmation message
1295  *    Value: 0x9
1296  *  - COOKIE_LSBS
1297  *    Bits 31:0
1298  *    Purpose: Provide a mechanism to match a target->host stats confirmation
1299  *        message with its preceding host->target stats request message.
1300  *    Value: LSBs of the opaque cookie specified by the host-side requestor
1301  *  - COOKIE_MSBS
1302  *    Bits 31:0
1303  *    Purpose: Provide a mechanism to match a target->host stats confirmation
1304  *        message with its preceding host->target stats request message.
1305  *    Value: MSBs of the opaque cookie specified by the host-side requestor
1306  *
1307  * Stats Information Element tag-length header fields:
1308  *  - STAT_TYPE
1309  *    Bits 4:0
1310  *    Purpose: identifies the type of statistics info held in the
1311  *        following information element
1312  *    Value: htt_dbg_stats_type
1313  *  - STATUS
1314  *    Bits 7:5
1315  *    Purpose: indicate whether the requested stats are present
1316  *    Value: htt_dbg_stats_status, including a special value (0x7) to mark
1317  *        the completion of the stats entry series
1318  *  - LENGTH
1319  *    Bits 31:16
1320  *    Purpose: indicate the stats information size
1321  *    Value: This field specifies the number of bytes of stats information
1322  *       that follows the element tag-length header.
1323  *       It is expected but not required that this length is a multiple of
1324  *       4 bytes.  Even if the length is not an integer multiple of 4, the
1325  *       subsequent stats entry header will begin on a 4-byte aligned
1326  *       boundary.
1327  */
1328 
1329 #define HTT_STATS_CONF_ITEM_INFO_STAT_TYPE_MASK 0x1F
1330 #define HTT_STATS_CONF_ITEM_INFO_STAT_TYPE_LSB  0
1331 #define HTT_STATS_CONF_ITEM_INFO_STATUS_MASK    0xE0
1332 #define HTT_STATS_CONF_ITEM_INFO_STATUS_LSB     5
1333 
1334 struct htt_stats_conf_item {
1335 	union {
1336 		u8 info;
1337 		struct {
1338 			u8 stat_type:5; /* %HTT_DBG_STATS_ */
1339 			u8 status:3; /* %HTT_DBG_STATS_STATUS_ */
1340 		} __packed;
1341 	} __packed;
1342 	u8 pad;
1343 	__le16 length;
1344 	u8 payload[0]; /* roundup(length, 4) long */
1345 } __packed;
1346 
1347 struct htt_stats_conf {
1348 	u8 pad[3];
1349 	__le32 cookie_lsb;
1350 	__le32 cookie_msb;
1351 
1352 	/* each item has variable length! */
1353 	struct htt_stats_conf_item items[0];
1354 } __packed;
1355 
1356 static inline struct htt_stats_conf_item *htt_stats_conf_next_item(
1357 					const struct htt_stats_conf_item *item)
1358 {
1359 	return (void *)item + sizeof(*item) + roundup(item->length, 4);
1360 }
1361 
1362 /*
1363  * host -> target FRAG DESCRIPTOR/MSDU_EXT DESC bank
1364  *
1365  * The following field definitions describe the format of the HTT host
1366  * to target frag_desc/msdu_ext bank configuration message.
1367  * The message contains the based address and the min and max id of the
1368  * MSDU_EXT/FRAG_DESC that will be used by the HTT to map MSDU DESC and
1369  * MSDU_EXT/FRAG_DESC.
1370  * HTT will use id in HTT descriptor instead sending the frag_desc_ptr.
1371  * For QCA988X HW the firmware will use fragment_desc_ptr but in WIFI2.0
1372  * the hardware does the mapping/translation.
1373  *
1374  * Total banks that can be configured is configured to 16.
1375  *
1376  * This should be called before any TX has be initiated by the HTT
1377  *
1378  * |31                         16|15           8|7   5|4       0|
1379  * |------------------------------------------------------------|
1380  * | DESC_SIZE    |  NUM_BANKS   | RES |SWP|pdev|    msg type   |
1381  * |------------------------------------------------------------|
1382  * |                     BANK0_BASE_ADDRESS                     |
1383  * |------------------------------------------------------------|
1384  * |                            ...                             |
1385  * |------------------------------------------------------------|
1386  * |                    BANK15_BASE_ADDRESS                     |
1387  * |------------------------------------------------------------|
1388  * |       BANK0_MAX_ID          |       BANK0_MIN_ID           |
1389  * |------------------------------------------------------------|
1390  * |                            ...                             |
1391  * |------------------------------------------------------------|
1392  * |       BANK15_MAX_ID         |       BANK15_MIN_ID          |
1393  * |------------------------------------------------------------|
1394  * Header fields:
1395  *  - MSG_TYPE
1396  *    Bits 7:0
1397  *    Value: 0x6
1398  *  - BANKx_BASE_ADDRESS
1399  *    Bits 31:0
1400  *    Purpose: Provide a mechanism to specify the base address of the MSDU_EXT
1401  *         bank physical/bus address.
1402  *  - BANKx_MIN_ID
1403  *    Bits 15:0
1404  *    Purpose: Provide a mechanism to specify the min index that needs to
1405  *          mapped.
1406  *  - BANKx_MAX_ID
1407  *    Bits 31:16
1408  *    Purpose: Provide a mechanism to specify the max index that needs to
1409  *
1410  */
1411 struct htt_frag_desc_bank_id {
1412 	__le16 bank_min_id;
1413 	__le16 bank_max_id;
1414 } __packed;
1415 
1416 /* real is 16 but it wouldn't fit in the max htt message size
1417  * so we use a conservatively safe value for now
1418  */
1419 #define HTT_FRAG_DESC_BANK_MAX 4
1420 
1421 #define HTT_FRAG_DESC_BANK_CFG_INFO_PDEV_ID_MASK		0x03
1422 #define HTT_FRAG_DESC_BANK_CFG_INFO_PDEV_ID_LSB			0
1423 #define HTT_FRAG_DESC_BANK_CFG_INFO_SWAP			BIT(2)
1424 #define HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_VALID		BIT(3)
1425 #define HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_DEPTH_TYPE_MASK	BIT(4)
1426 #define HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_DEPTH_TYPE_LSB	4
1427 
1428 enum htt_q_depth_type {
1429 	HTT_Q_DEPTH_TYPE_BYTES = 0,
1430 	HTT_Q_DEPTH_TYPE_MSDUS = 1,
1431 };
1432 
1433 #define HTT_TX_Q_STATE_NUM_PEERS		(TARGET_10_4_NUM_QCACHE_PEERS_MAX + \
1434 						 TARGET_10_4_NUM_VDEVS)
1435 #define HTT_TX_Q_STATE_NUM_TIDS			8
1436 #define HTT_TX_Q_STATE_ENTRY_SIZE		1
1437 #define HTT_TX_Q_STATE_ENTRY_MULTIPLIER		0
1438 
1439 /**
1440  * htt_q_state_conf - part of htt_frag_desc_bank_cfg for host q state config
1441  *
1442  * Defines host q state format and behavior. See htt_q_state.
1443  *
1444  * @record_size: Defines the size of each host q entry in bytes. In practice
1445  *	however firmware (at least 10.4.3-00191) ignores this host
1446  *	configuration value and uses hardcoded value of 1.
1447  * @record_multiplier: This is valid only when q depth type is MSDUs. It
1448  *	defines the exponent for the power of 2 multiplication.
1449  */
1450 struct htt_q_state_conf {
1451 	__le32 paddr;
1452 	__le16 num_peers;
1453 	__le16 num_tids;
1454 	u8 record_size;
1455 	u8 record_multiplier;
1456 	u8 pad[2];
1457 } __packed;
1458 
1459 struct htt_frag_desc_bank_cfg32 {
1460 	u8 info; /* HTT_FRAG_DESC_BANK_CFG_INFO_ */
1461 	u8 num_banks;
1462 	u8 desc_size;
1463 	__le32 bank_base_addrs[HTT_FRAG_DESC_BANK_MAX];
1464 	struct htt_frag_desc_bank_id bank_id[HTT_FRAG_DESC_BANK_MAX];
1465 	struct htt_q_state_conf q_state;
1466 } __packed;
1467 
1468 struct htt_frag_desc_bank_cfg64 {
1469 	u8 info; /* HTT_FRAG_DESC_BANK_CFG_INFO_ */
1470 	u8 num_banks;
1471 	u8 desc_size;
1472 	__le64 bank_base_addrs[HTT_FRAG_DESC_BANK_MAX];
1473 	struct htt_frag_desc_bank_id bank_id[HTT_FRAG_DESC_BANK_MAX];
1474 	struct htt_q_state_conf q_state;
1475 } __packed;
1476 
1477 #define HTT_TX_Q_STATE_ENTRY_COEFFICIENT	128
1478 #define HTT_TX_Q_STATE_ENTRY_FACTOR_MASK	0x3f
1479 #define HTT_TX_Q_STATE_ENTRY_FACTOR_LSB		0
1480 #define HTT_TX_Q_STATE_ENTRY_EXP_MASK		0xc0
1481 #define HTT_TX_Q_STATE_ENTRY_EXP_LSB		6
1482 
1483 /**
1484  * htt_q_state - shared between host and firmware via DMA
1485  *
1486  * This structure is used for the host to expose it's software queue state to
1487  * firmware so that its rate control can schedule fetch requests for optimized
1488  * performance. This is most notably used for MU-MIMO aggregation when multiple
1489  * MU clients are connected.
1490  *
1491  * @count: Each element defines the host queue depth. When q depth type was
1492  *	configured as HTT_Q_DEPTH_TYPE_BYTES then each entry is defined as:
1493  *	FACTOR * 128 * 8^EXP (see HTT_TX_Q_STATE_ENTRY_FACTOR_MASK and
1494  *	HTT_TX_Q_STATE_ENTRY_EXP_MASK). When q depth type was configured as
1495  *	HTT_Q_DEPTH_TYPE_MSDUS the number of packets is scaled by 2 **
1496  *	record_multiplier (see htt_q_state_conf).
1497  * @map: Used by firmware to quickly check which host queues are not empty. It
1498  *	is a bitmap simply saying.
1499  * @seq: Used by firmware to quickly check if the host queues were updated
1500  *	since it last checked.
1501  *
1502  * FIXME: Is the q_state map[] size calculation really correct?
1503  */
1504 struct htt_q_state {
1505 	u8 count[HTT_TX_Q_STATE_NUM_TIDS][HTT_TX_Q_STATE_NUM_PEERS];
1506 	u32 map[HTT_TX_Q_STATE_NUM_TIDS][(HTT_TX_Q_STATE_NUM_PEERS + 31) / 32];
1507 	__le32 seq;
1508 } __packed;
1509 
1510 #define HTT_TX_FETCH_RECORD_INFO_PEER_ID_MASK	0x0fff
1511 #define HTT_TX_FETCH_RECORD_INFO_PEER_ID_LSB	0
1512 #define HTT_TX_FETCH_RECORD_INFO_TID_MASK	0xf000
1513 #define HTT_TX_FETCH_RECORD_INFO_TID_LSB	12
1514 
1515 struct htt_tx_fetch_record {
1516 	__le16 info; /* HTT_TX_FETCH_IND_RECORD_INFO_ */
1517 	__le16 num_msdus;
1518 	__le32 num_bytes;
1519 } __packed;
1520 
1521 struct htt_tx_fetch_ind {
1522 	u8 pad0;
1523 	__le16 fetch_seq_num;
1524 	__le32 token;
1525 	__le16 num_resp_ids;
1526 	__le16 num_records;
1527 	struct htt_tx_fetch_record records[0];
1528 	__le32 resp_ids[0]; /* ath10k_htt_get_tx_fetch_ind_resp_ids() */
1529 } __packed;
1530 
1531 static inline void *
1532 ath10k_htt_get_tx_fetch_ind_resp_ids(struct htt_tx_fetch_ind *ind)
1533 {
1534 	return (void *)&ind->records[le16_to_cpu(ind->num_records)];
1535 }
1536 
1537 struct htt_tx_fetch_resp {
1538 	u8 pad0;
1539 	__le16 resp_id;
1540 	__le16 fetch_seq_num;
1541 	__le16 num_records;
1542 	__le32 token;
1543 	struct htt_tx_fetch_record records[0];
1544 } __packed;
1545 
1546 struct htt_tx_fetch_confirm {
1547 	u8 pad0;
1548 	__le16 num_resp_ids;
1549 	__le32 resp_ids[0];
1550 } __packed;
1551 
1552 enum htt_tx_mode_switch_mode {
1553 	HTT_TX_MODE_SWITCH_PUSH = 0,
1554 	HTT_TX_MODE_SWITCH_PUSH_PULL = 1,
1555 };
1556 
1557 #define HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE		BIT(0)
1558 #define HTT_TX_MODE_SWITCH_IND_INFO0_NUM_RECORDS_MASK	0xfffe
1559 #define HTT_TX_MODE_SWITCH_IND_INFO0_NUM_RECORDS_LSB	1
1560 
1561 #define HTT_TX_MODE_SWITCH_IND_INFO1_MODE_MASK		0x0003
1562 #define HTT_TX_MODE_SWITCH_IND_INFO1_MODE_LSB		0
1563 #define HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD_MASK	0xfffc
1564 #define HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD_LSB	2
1565 
1566 #define HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID_MASK	0x0fff
1567 #define HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID_LSB	0
1568 #define HTT_TX_MODE_SWITCH_RECORD_INFO0_TID_MASK	0xf000
1569 #define HTT_TX_MODE_SWITCH_RECORD_INFO0_TID_LSB		12
1570 
1571 struct htt_tx_mode_switch_record {
1572 	__le16 info0; /* HTT_TX_MODE_SWITCH_RECORD_INFO0_ */
1573 	__le16 num_max_msdus;
1574 } __packed;
1575 
1576 struct htt_tx_mode_switch_ind {
1577 	u8 pad0;
1578 	__le16 info0; /* HTT_TX_MODE_SWITCH_IND_INFO0_ */
1579 	__le16 info1; /* HTT_TX_MODE_SWITCH_IND_INFO1_ */
1580 	u8 pad1[2];
1581 	struct htt_tx_mode_switch_record records[0];
1582 } __packed;
1583 
1584 struct htt_channel_change {
1585 	u8 pad[3];
1586 	__le32 freq;
1587 	__le32 center_freq1;
1588 	__le32 center_freq2;
1589 	__le32 phymode;
1590 } __packed;
1591 
1592 struct htt_per_peer_tx_stats_ind {
1593 	__le32	succ_bytes;
1594 	__le32  retry_bytes;
1595 	__le32  failed_bytes;
1596 	u8	ratecode;
1597 	u8	flags;
1598 	__le16	peer_id;
1599 	__le16  succ_pkts;
1600 	__le16	retry_pkts;
1601 	__le16	failed_pkts;
1602 	__le16	tx_duration;
1603 	__le32	reserved1;
1604 	__le32	reserved2;
1605 } __packed;
1606 
1607 struct htt_peer_tx_stats {
1608 	u8 num_ppdu;
1609 	u8 ppdu_len;
1610 	u8 version;
1611 	u8 payload[0];
1612 } __packed;
1613 
1614 #define ATH10K_10_2_TX_STATS_OFFSET	136
1615 #define PEER_STATS_FOR_NO_OF_PPDUS	4
1616 
1617 struct ath10k_10_2_peer_tx_stats {
1618 	u8 ratecode[PEER_STATS_FOR_NO_OF_PPDUS];
1619 	u8 success_pkts[PEER_STATS_FOR_NO_OF_PPDUS];
1620 	__le16 success_bytes[PEER_STATS_FOR_NO_OF_PPDUS];
1621 	u8 retry_pkts[PEER_STATS_FOR_NO_OF_PPDUS];
1622 	__le16 retry_bytes[PEER_STATS_FOR_NO_OF_PPDUS];
1623 	u8 failed_pkts[PEER_STATS_FOR_NO_OF_PPDUS];
1624 	__le16 failed_bytes[PEER_STATS_FOR_NO_OF_PPDUS];
1625 	u8 flags[PEER_STATS_FOR_NO_OF_PPDUS];
1626 	__le32 tx_duration;
1627 	u8 tx_ppdu_cnt;
1628 	u8 peer_id;
1629 } __packed;
1630 
1631 union htt_rx_pn_t {
1632 	/* WEP: 24-bit PN */
1633 	u32 pn24;
1634 
1635 	/* TKIP or CCMP: 48-bit PN */
1636 	u64 pn48;
1637 
1638 	/* WAPI: 128-bit PN */
1639 	u64 pn128[2];
1640 };
1641 
1642 struct htt_cmd {
1643 	struct htt_cmd_hdr hdr;
1644 	union {
1645 		struct htt_ver_req ver_req;
1646 		struct htt_mgmt_tx_desc mgmt_tx;
1647 		struct htt_data_tx_desc data_tx;
1648 		struct htt_rx_ring_setup_32 rx_setup_32;
1649 		struct htt_rx_ring_setup_64 rx_setup_64;
1650 		struct htt_stats_req stats_req;
1651 		struct htt_oob_sync_req oob_sync_req;
1652 		struct htt_aggr_conf aggr_conf;
1653 		struct htt_frag_desc_bank_cfg32 frag_desc_bank_cfg32;
1654 		struct htt_frag_desc_bank_cfg64 frag_desc_bank_cfg64;
1655 		struct htt_tx_fetch_resp tx_fetch_resp;
1656 	};
1657 } __packed;
1658 
1659 struct htt_resp {
1660 	struct htt_resp_hdr hdr;
1661 	union {
1662 		struct htt_ver_resp ver_resp;
1663 		struct htt_mgmt_tx_completion mgmt_tx_completion;
1664 		struct htt_data_tx_completion data_tx_completion;
1665 		struct htt_rx_indication rx_ind;
1666 		struct htt_rx_indication_hl rx_ind_hl;
1667 		struct htt_rx_fragment_indication rx_frag_ind;
1668 		struct htt_rx_peer_map peer_map;
1669 		struct htt_rx_peer_unmap peer_unmap;
1670 		struct htt_rx_flush rx_flush;
1671 		struct htt_rx_addba rx_addba;
1672 		struct htt_rx_delba rx_delba;
1673 		struct htt_security_indication security_indication;
1674 		struct htt_rc_update rc_update;
1675 		struct htt_rx_test rx_test;
1676 		struct htt_pktlog_msg pktlog_msg;
1677 		struct htt_stats_conf stats_conf;
1678 		struct htt_rx_pn_ind rx_pn_ind;
1679 		struct htt_rx_offload_ind rx_offload_ind;
1680 		struct htt_rx_in_ord_ind rx_in_ord_ind;
1681 		struct htt_tx_fetch_ind tx_fetch_ind;
1682 		struct htt_tx_fetch_confirm tx_fetch_confirm;
1683 		struct htt_tx_mode_switch_ind tx_mode_switch_ind;
1684 		struct htt_channel_change chan_change;
1685 		struct htt_peer_tx_stats peer_tx_stats;
1686 	};
1687 } __packed;
1688 
1689 /*** host side structures follow ***/
1690 
1691 struct htt_tx_done {
1692 	u16 msdu_id;
1693 	u16 status;
1694 	u8 ack_rssi;
1695 };
1696 
1697 enum htt_tx_compl_state {
1698 	HTT_TX_COMPL_STATE_NONE,
1699 	HTT_TX_COMPL_STATE_ACK,
1700 	HTT_TX_COMPL_STATE_NOACK,
1701 	HTT_TX_COMPL_STATE_DISCARD,
1702 };
1703 
1704 struct htt_peer_map_event {
1705 	u8 vdev_id;
1706 	u16 peer_id;
1707 	u8 addr[ETH_ALEN];
1708 };
1709 
1710 struct htt_peer_unmap_event {
1711 	u16 peer_id;
1712 };
1713 
1714 struct ath10k_htt_txbuf_32 {
1715 	struct htt_data_tx_desc_frag frags[2];
1716 	struct ath10k_htc_hdr htc_hdr;
1717 	struct htt_cmd_hdr cmd_hdr;
1718 	struct htt_data_tx_desc cmd_tx;
1719 } __packed;
1720 
1721 struct ath10k_htt_txbuf_64 {
1722 	struct htt_data_tx_desc_frag frags[2];
1723 	struct ath10k_htc_hdr htc_hdr;
1724 	struct htt_cmd_hdr cmd_hdr;
1725 	struct htt_data_tx_desc_64 cmd_tx;
1726 } __packed;
1727 
1728 struct ath10k_htt {
1729 	struct ath10k *ar;
1730 	enum ath10k_htc_ep_id eid;
1731 
1732 	u8 target_version_major;
1733 	u8 target_version_minor;
1734 	struct completion target_version_received;
1735 	u8 max_num_amsdu;
1736 	u8 max_num_ampdu;
1737 
1738 	const enum htt_t2h_msg_type *t2h_msg_types;
1739 	u32 t2h_msg_types_max;
1740 
1741 	struct {
1742 		/*
1743 		 * Ring of network buffer objects - This ring is
1744 		 * used exclusively by the host SW. This ring
1745 		 * mirrors the dev_addrs_ring that is shared
1746 		 * between the host SW and the MAC HW. The host SW
1747 		 * uses this netbufs ring to locate the network
1748 		 * buffer objects whose data buffers the HW has
1749 		 * filled.
1750 		 */
1751 		struct sk_buff **netbufs_ring;
1752 
1753 		/* This is used only with firmware supporting IN_ORD_IND.
1754 		 *
1755 		 * With Full Rx Reorder the HTT Rx Ring is more of a temporary
1756 		 * buffer ring from which buffer addresses are copied by the
1757 		 * firmware to MAC Rx ring. Firmware then delivers IN_ORD_IND
1758 		 * pointing to specific (re-ordered) buffers.
1759 		 *
1760 		 * FIXME: With kernel generic hashing functions there's a lot
1761 		 * of hash collisions for sk_buffs.
1762 		 */
1763 		bool in_ord_rx;
1764 		DECLARE_HASHTABLE(skb_table, 4);
1765 
1766 		/*
1767 		 * Ring of buffer addresses -
1768 		 * This ring holds the "physical" device address of the
1769 		 * rx buffers the host SW provides for the MAC HW to
1770 		 * fill.
1771 		 */
1772 		union {
1773 			__le64 *paddrs_ring_64;
1774 			__le32 *paddrs_ring_32;
1775 		};
1776 
1777 		/*
1778 		 * Base address of ring, as a "physical" device address
1779 		 * rather than a CPU address.
1780 		 */
1781 		dma_addr_t base_paddr;
1782 
1783 		/* how many elems in the ring (power of 2) */
1784 		int size;
1785 
1786 		/* size - 1 */
1787 		unsigned int size_mask;
1788 
1789 		/* how many rx buffers to keep in the ring */
1790 		int fill_level;
1791 
1792 		/* how many rx buffers (full+empty) are in the ring */
1793 		int fill_cnt;
1794 
1795 		/*
1796 		 * alloc_idx - where HTT SW has deposited empty buffers
1797 		 * This is allocated in consistent mem, so that the FW can
1798 		 * read this variable, and program the HW's FW_IDX reg with
1799 		 * the value of this shadow register.
1800 		 */
1801 		struct {
1802 			__le32 *vaddr;
1803 			dma_addr_t paddr;
1804 		} alloc_idx;
1805 
1806 		/* where HTT SW has processed bufs filled by rx MAC DMA */
1807 		struct {
1808 			unsigned int msdu_payld;
1809 		} sw_rd_idx;
1810 
1811 		/*
1812 		 * refill_retry_timer - timer triggered when the ring is
1813 		 * not refilled to the level expected
1814 		 */
1815 		struct timer_list refill_retry_timer;
1816 
1817 		/* Protects access to all rx ring buffer state variables */
1818 		spinlock_t lock;
1819 	} rx_ring;
1820 
1821 	unsigned int prefetch_len;
1822 
1823 	/* Protects access to pending_tx, num_pending_tx */
1824 	spinlock_t tx_lock;
1825 	int max_num_pending_tx;
1826 	int num_pending_tx;
1827 	int num_pending_mgmt_tx;
1828 	struct idr pending_tx;
1829 	wait_queue_head_t empty_tx_wq;
1830 
1831 	/* FIFO for storing tx done status {ack, no-ack, discard} and msdu id */
1832 	DECLARE_KFIFO_PTR(txdone_fifo, struct htt_tx_done);
1833 
1834 	/* set if host-fw communication goes haywire
1835 	 * used to avoid further failures
1836 	 */
1837 	bool rx_confused;
1838 	atomic_t num_mpdus_ready;
1839 
1840 	/* This is used to group tx/rx completions separately and process them
1841 	 * in batches to reduce cache stalls
1842 	 */
1843 	struct sk_buff_head rx_msdus_q;
1844 	struct sk_buff_head rx_in_ord_compl_q;
1845 	struct sk_buff_head tx_fetch_ind_q;
1846 
1847 	/* rx_status template */
1848 	struct ieee80211_rx_status rx_status;
1849 
1850 	struct {
1851 		dma_addr_t paddr;
1852 		union {
1853 			struct htt_msdu_ext_desc *vaddr_desc_32;
1854 			struct htt_msdu_ext_desc_64 *vaddr_desc_64;
1855 		};
1856 		size_t size;
1857 	} frag_desc;
1858 
1859 	struct {
1860 		dma_addr_t paddr;
1861 		union {
1862 			struct ath10k_htt_txbuf_32 *vaddr_txbuff_32;
1863 			struct ath10k_htt_txbuf_64 *vaddr_txbuff_64;
1864 		};
1865 		size_t size;
1866 	} txbuf;
1867 
1868 	struct {
1869 		bool enabled;
1870 		struct htt_q_state *vaddr;
1871 		dma_addr_t paddr;
1872 		u16 num_push_allowed;
1873 		u16 num_peers;
1874 		u16 num_tids;
1875 		enum htt_tx_mode_switch_mode mode;
1876 		enum htt_q_depth_type type;
1877 	} tx_q_state;
1878 
1879 	bool tx_mem_allocated;
1880 	const struct ath10k_htt_tx_ops *tx_ops;
1881 	const struct ath10k_htt_rx_ops *rx_ops;
1882 };
1883 
1884 struct ath10k_htt_tx_ops {
1885 	int (*htt_send_rx_ring_cfg)(struct ath10k_htt *htt);
1886 	int (*htt_send_frag_desc_bank_cfg)(struct ath10k_htt *htt);
1887 	int (*htt_alloc_frag_desc)(struct ath10k_htt *htt);
1888 	void (*htt_free_frag_desc)(struct ath10k_htt *htt);
1889 	int (*htt_tx)(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
1890 		      struct sk_buff *msdu);
1891 	int (*htt_alloc_txbuff)(struct ath10k_htt *htt);
1892 	void (*htt_free_txbuff)(struct ath10k_htt *htt);
1893 };
1894 
1895 static inline int ath10k_htt_send_rx_ring_cfg(struct ath10k_htt *htt)
1896 {
1897 	if (!htt->tx_ops->htt_send_rx_ring_cfg)
1898 		return -EOPNOTSUPP;
1899 
1900 	return htt->tx_ops->htt_send_rx_ring_cfg(htt);
1901 }
1902 
1903 static inline int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt)
1904 {
1905 	if (!htt->tx_ops->htt_send_frag_desc_bank_cfg)
1906 		return -EOPNOTSUPP;
1907 
1908 	return htt->tx_ops->htt_send_frag_desc_bank_cfg(htt);
1909 }
1910 
1911 static inline int ath10k_htt_alloc_frag_desc(struct ath10k_htt *htt)
1912 {
1913 	if (!htt->tx_ops->htt_alloc_frag_desc)
1914 		return -EOPNOTSUPP;
1915 
1916 	return htt->tx_ops->htt_alloc_frag_desc(htt);
1917 }
1918 
1919 static inline void ath10k_htt_free_frag_desc(struct ath10k_htt *htt)
1920 {
1921 	if (htt->tx_ops->htt_free_frag_desc)
1922 		htt->tx_ops->htt_free_frag_desc(htt);
1923 }
1924 
1925 static inline int ath10k_htt_tx(struct ath10k_htt *htt,
1926 				enum ath10k_hw_txrx_mode txmode,
1927 				struct sk_buff *msdu)
1928 {
1929 	return htt->tx_ops->htt_tx(htt, txmode, msdu);
1930 }
1931 
1932 static inline int ath10k_htt_alloc_txbuff(struct ath10k_htt *htt)
1933 {
1934 	if (!htt->tx_ops->htt_alloc_txbuff)
1935 		return -EOPNOTSUPP;
1936 
1937 	return htt->tx_ops->htt_alloc_txbuff(htt);
1938 }
1939 
1940 static inline void ath10k_htt_free_txbuff(struct ath10k_htt *htt)
1941 {
1942 	if (htt->tx_ops->htt_free_txbuff)
1943 		htt->tx_ops->htt_free_txbuff(htt);
1944 }
1945 
1946 struct ath10k_htt_rx_ops {
1947 	size_t (*htt_get_rx_ring_size)(struct ath10k_htt *htt);
1948 	void (*htt_config_paddrs_ring)(struct ath10k_htt *htt, void *vaddr);
1949 	void (*htt_set_paddrs_ring)(struct ath10k_htt *htt, dma_addr_t paddr,
1950 				    int idx);
1951 	void* (*htt_get_vaddr_ring)(struct ath10k_htt *htt);
1952 	void (*htt_reset_paddrs_ring)(struct ath10k_htt *htt, int idx);
1953 };
1954 
1955 static inline size_t ath10k_htt_get_rx_ring_size(struct ath10k_htt *htt)
1956 {
1957 	if (!htt->rx_ops->htt_get_rx_ring_size)
1958 		return 0;
1959 
1960 	return htt->rx_ops->htt_get_rx_ring_size(htt);
1961 }
1962 
1963 static inline void ath10k_htt_config_paddrs_ring(struct ath10k_htt *htt,
1964 						 void *vaddr)
1965 {
1966 	if (htt->rx_ops->htt_config_paddrs_ring)
1967 		htt->rx_ops->htt_config_paddrs_ring(htt, vaddr);
1968 }
1969 
1970 static inline void ath10k_htt_set_paddrs_ring(struct ath10k_htt *htt,
1971 					      dma_addr_t paddr,
1972 					      int idx)
1973 {
1974 	if (htt->rx_ops->htt_set_paddrs_ring)
1975 		htt->rx_ops->htt_set_paddrs_ring(htt, paddr, idx);
1976 }
1977 
1978 static inline void *ath10k_htt_get_vaddr_ring(struct ath10k_htt *htt)
1979 {
1980 	if (!htt->rx_ops->htt_get_vaddr_ring)
1981 		return NULL;
1982 
1983 	return htt->rx_ops->htt_get_vaddr_ring(htt);
1984 }
1985 
1986 static inline void ath10k_htt_reset_paddrs_ring(struct ath10k_htt *htt, int idx)
1987 {
1988 	if (htt->rx_ops->htt_reset_paddrs_ring)
1989 		htt->rx_ops->htt_reset_paddrs_ring(htt, idx);
1990 }
1991 
1992 #define RX_HTT_HDR_STATUS_LEN 64
1993 
1994 /* This structure layout is programmed via rx ring setup
1995  * so that FW knows how to transfer the rx descriptor to the host.
1996  * Buffers like this are placed on the rx ring.
1997  */
1998 struct htt_rx_desc {
1999 	union {
2000 		/* This field is filled on the host using the msdu buffer
2001 		 * from htt_rx_indication
2002 		 */
2003 		struct fw_rx_desc_base fw_desc;
2004 		u32 pad;
2005 	} __packed;
2006 	struct {
2007 		struct rx_attention attention;
2008 		struct rx_frag_info frag_info;
2009 		struct rx_mpdu_start mpdu_start;
2010 		struct rx_msdu_start msdu_start;
2011 		struct rx_msdu_end msdu_end;
2012 		struct rx_mpdu_end mpdu_end;
2013 		struct rx_ppdu_start ppdu_start;
2014 		struct rx_ppdu_end ppdu_end;
2015 	} __packed;
2016 	u8 rx_hdr_status[RX_HTT_HDR_STATUS_LEN];
2017 	u8 msdu_payload[0];
2018 };
2019 
2020 #define HTT_RX_DESC_HL_INFO_SEQ_NUM_MASK           0x00000fff
2021 #define HTT_RX_DESC_HL_INFO_SEQ_NUM_LSB            0
2022 #define HTT_RX_DESC_HL_INFO_ENCRYPTED_MASK         0x00001000
2023 #define HTT_RX_DESC_HL_INFO_ENCRYPTED_LSB          12
2024 #define HTT_RX_DESC_HL_INFO_CHAN_INFO_PRESENT_MASK 0x00002000
2025 #define HTT_RX_DESC_HL_INFO_CHAN_INFO_PRESENT_LSB  13
2026 #define HTT_RX_DESC_HL_INFO_MCAST_BCAST_MASK       0x00008000
2027 #define HTT_RX_DESC_HL_INFO_MCAST_BCAST_LSB        15
2028 #define HTT_RX_DESC_HL_INFO_FRAGMENT_MASK          0x00010000
2029 #define HTT_RX_DESC_HL_INFO_FRAGMENT_LSB           16
2030 #define HTT_RX_DESC_HL_INFO_KEY_ID_OCT_MASK        0x01fe0000
2031 #define HTT_RX_DESC_HL_INFO_KEY_ID_OCT_LSB         17
2032 
2033 struct htt_rx_desc_base_hl {
2034 	__le32 info; /* HTT_RX_DESC_HL_INFO_ */
2035 };
2036 
2037 struct htt_rx_chan_info {
2038 	__le16 primary_chan_center_freq_mhz;
2039 	__le16 contig_chan1_center_freq_mhz;
2040 	__le16 contig_chan2_center_freq_mhz;
2041 	u8 phy_mode;
2042 	u8 reserved;
2043 } __packed;
2044 
2045 #define HTT_RX_DESC_ALIGN 8
2046 
2047 #define HTT_MAC_ADDR_LEN 6
2048 
2049 /*
2050  * FIX THIS
2051  * Should be: sizeof(struct htt_host_rx_desc) + max rx MSDU size,
2052  * rounded up to a cache line size.
2053  */
2054 #define HTT_RX_BUF_SIZE 1920
2055 #define HTT_RX_MSDU_SIZE (HTT_RX_BUF_SIZE - (int)sizeof(struct htt_rx_desc))
2056 
2057 /* Refill a bunch of RX buffers for each refill round so that FW/HW can handle
2058  * aggregated traffic more nicely.
2059  */
2060 #define ATH10K_HTT_MAX_NUM_REFILL 100
2061 
2062 /*
2063  * DMA_MAP expects the buffer to be an integral number of cache lines.
2064  * Rather than checking the actual cache line size, this code makes a
2065  * conservative estimate of what the cache line size could be.
2066  */
2067 #define HTT_LOG2_MAX_CACHE_LINE_SIZE 7	/* 2^7 = 128 */
2068 #define HTT_MAX_CACHE_LINE_SIZE_MASK ((1 << HTT_LOG2_MAX_CACHE_LINE_SIZE) - 1)
2069 
2070 /* These values are default in most firmware revisions and apparently are a
2071  * sweet spot performance wise.
2072  */
2073 #define ATH10K_HTT_MAX_NUM_AMSDU_DEFAULT 3
2074 #define ATH10K_HTT_MAX_NUM_AMPDU_DEFAULT 64
2075 
2076 int ath10k_htt_connect(struct ath10k_htt *htt);
2077 int ath10k_htt_init(struct ath10k *ar);
2078 int ath10k_htt_setup(struct ath10k_htt *htt);
2079 
2080 int ath10k_htt_tx_start(struct ath10k_htt *htt);
2081 void ath10k_htt_tx_stop(struct ath10k_htt *htt);
2082 void ath10k_htt_tx_destroy(struct ath10k_htt *htt);
2083 void ath10k_htt_tx_free(struct ath10k_htt *htt);
2084 
2085 int ath10k_htt_rx_alloc(struct ath10k_htt *htt);
2086 int ath10k_htt_rx_ring_refill(struct ath10k *ar);
2087 void ath10k_htt_rx_free(struct ath10k_htt *htt);
2088 
2089 void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb);
2090 void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb);
2091 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb);
2092 int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt);
2093 int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u8 mask, u64 cookie);
2094 int ath10k_htt_h2t_aggr_cfg_msg(struct ath10k_htt *htt,
2095 				u8 max_subfrms_ampdu,
2096 				u8 max_subfrms_amsdu);
2097 void ath10k_htt_hif_tx_complete(struct ath10k *ar, struct sk_buff *skb);
2098 int ath10k_htt_tx_fetch_resp(struct ath10k *ar,
2099 			     __le32 token,
2100 			     __le16 fetch_seq_num,
2101 			     struct htt_tx_fetch_record *records,
2102 			     size_t num_records);
2103 
2104 void ath10k_htt_tx_txq_update(struct ieee80211_hw *hw,
2105 			      struct ieee80211_txq *txq);
2106 void ath10k_htt_tx_txq_recalc(struct ieee80211_hw *hw,
2107 			      struct ieee80211_txq *txq);
2108 void ath10k_htt_tx_txq_sync(struct ath10k *ar);
2109 void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt);
2110 int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt);
2111 void ath10k_htt_tx_mgmt_dec_pending(struct ath10k_htt *htt);
2112 int ath10k_htt_tx_mgmt_inc_pending(struct ath10k_htt *htt, bool is_mgmt,
2113 				   bool is_presp);
2114 
2115 int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt, struct sk_buff *skb);
2116 void ath10k_htt_tx_free_msdu_id(struct ath10k_htt *htt, u16 msdu_id);
2117 int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu);
2118 void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar,
2119 					     struct sk_buff *skb);
2120 int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget);
2121 void ath10k_htt_set_tx_ops(struct ath10k_htt *htt);
2122 void ath10k_htt_set_rx_ops(struct ath10k_htt *htt);
2123 #endif
2124