1 /* SPDX-License-Identifier: ISC */
2 /*
3 * Copyright (c) 2012-2016 Qualcomm Atheros, Inc.
4 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
5 */
6
7 #ifndef WIL6210_TXRX_H
8 #define WIL6210_TXRX_H
9
10 #include "wil6210.h"
11 #include "txrx_edma.h"
12
13 #define BUF_SW_OWNED (1)
14 #define BUF_HW_OWNED (0)
15
16 /* default size of MAC Tx/Rx buffers */
17 #define TXRX_BUF_LEN_DEFAULT (2048)
18
19 /* how many bytes to reserve for rtap header? */
20 #define WIL6210_RTAP_SIZE (128)
21
22 /* Tx/Rx path */
23
wil_desc_addr(struct wil_ring_dma_addr * addr)24 static inline dma_addr_t wil_desc_addr(struct wil_ring_dma_addr *addr)
25 {
26 return le32_to_cpu(addr->addr_low) |
27 ((u64)le16_to_cpu(addr->addr_high) << 32);
28 }
29
wil_desc_addr_set(struct wil_ring_dma_addr * addr,dma_addr_t pa)30 static inline void wil_desc_addr_set(struct wil_ring_dma_addr *addr,
31 dma_addr_t pa)
32 {
33 addr->addr_low = cpu_to_le32(lower_32_bits(pa));
34 addr->addr_high = cpu_to_le16((u16)upper_32_bits(pa));
35 }
36
37 /* Tx descriptor - MAC part
38 * [dword 0]
39 * bit 0.. 9 : lifetime_expiry_value:10
40 * bit 10 : interrupt_en:1
41 * bit 11 : status_en:1
42 * bit 12..13 : txss_override:2
43 * bit 14 : timestamp_insertion:1
44 * bit 15 : duration_preserve:1
45 * bit 16..21 : reserved0:6
46 * bit 22..26 : mcs_index:5
47 * bit 27 : mcs_en:1
48 * bit 28..30 : reserved1:3
49 * bit 31 : sn_preserved:1
50 * [dword 1]
51 * bit 0.. 3 : pkt_mode:4
52 * bit 4 : pkt_mode_en:1
53 * bit 5 : mac_id_en:1
54 * bit 6..7 : mac_id:2
55 * bit 8..14 : reserved0:7
56 * bit 15 : ack_policy_en:1
57 * bit 16..19 : dst_index:4
58 * bit 20 : dst_index_en:1
59 * bit 21..22 : ack_policy:2
60 * bit 23 : lifetime_en:1
61 * bit 24..30 : max_retry:7
62 * bit 31 : max_retry_en:1
63 * [dword 2]
64 * bit 0.. 7 : num_of_descriptors:8
65 * bit 8..17 : reserved:10
66 * bit 18..19 : l2_translation_type:2 00 - bypass, 01 - 802.3, 10 - 802.11
67 * bit 20 : snap_hdr_insertion_en:1
68 * bit 21 : vlan_removal_en:1
69 * bit 22..31 : reserved0:10
70 * [dword 3]
71 * bit 0.. 31: ucode_cmd:32
72 */
73 struct vring_tx_mac {
74 u32 d[3];
75 u32 ucode_cmd;
76 } __packed;
77
78 /* TX MAC Dword 0 */
79 #define MAC_CFG_DESC_TX_0_LIFETIME_EXPIRY_VALUE_POS 0
80 #define MAC_CFG_DESC_TX_0_LIFETIME_EXPIRY_VALUE_LEN 10
81 #define MAC_CFG_DESC_TX_0_LIFETIME_EXPIRY_VALUE_MSK 0x3FF
82
83 #define MAC_CFG_DESC_TX_0_INTERRUP_EN_POS 10
84 #define MAC_CFG_DESC_TX_0_INTERRUP_EN_LEN 1
85 #define MAC_CFG_DESC_TX_0_INTERRUP_EN_MSK 0x400
86
87 #define MAC_CFG_DESC_TX_0_STATUS_EN_POS 11
88 #define MAC_CFG_DESC_TX_0_STATUS_EN_LEN 1
89 #define MAC_CFG_DESC_TX_0_STATUS_EN_MSK 0x800
90
91 #define MAC_CFG_DESC_TX_0_TXSS_OVERRIDE_POS 12
92 #define MAC_CFG_DESC_TX_0_TXSS_OVERRIDE_LEN 2
93 #define MAC_CFG_DESC_TX_0_TXSS_OVERRIDE_MSK 0x3000
94
95 #define MAC_CFG_DESC_TX_0_TIMESTAMP_INSERTION_POS 14
96 #define MAC_CFG_DESC_TX_0_TIMESTAMP_INSERTION_LEN 1
97 #define MAC_CFG_DESC_TX_0_TIMESTAMP_INSERTION_MSK 0x4000
98
99 #define MAC_CFG_DESC_TX_0_DURATION_PRESERVE_POS 15
100 #define MAC_CFG_DESC_TX_0_DURATION_PRESERVE_LEN 1
101 #define MAC_CFG_DESC_TX_0_DURATION_PRESERVE_MSK 0x8000
102
103 #define MAC_CFG_DESC_TX_0_MCS_INDEX_POS 22
104 #define MAC_CFG_DESC_TX_0_MCS_INDEX_LEN 5
105 #define MAC_CFG_DESC_TX_0_MCS_INDEX_MSK 0x7C00000
106
107 #define MAC_CFG_DESC_TX_0_MCS_EN_POS 27
108 #define MAC_CFG_DESC_TX_0_MCS_EN_LEN 1
109 #define MAC_CFG_DESC_TX_0_MCS_EN_MSK 0x8000000
110
111 #define MAC_CFG_DESC_TX_0_SN_PRESERVED_POS 31
112 #define MAC_CFG_DESC_TX_0_SN_PRESERVED_LEN 1
113 #define MAC_CFG_DESC_TX_0_SN_PRESERVED_MSK 0x80000000
114
115 /* TX MAC Dword 1 */
116 #define MAC_CFG_DESC_TX_1_PKT_MODE_POS 0
117 #define MAC_CFG_DESC_TX_1_PKT_MODE_LEN 4
118 #define MAC_CFG_DESC_TX_1_PKT_MODE_MSK 0xF
119
120 #define MAC_CFG_DESC_TX_1_PKT_MODE_EN_POS 4
121 #define MAC_CFG_DESC_TX_1_PKT_MODE_EN_LEN 1
122 #define MAC_CFG_DESC_TX_1_PKT_MODE_EN_MSK 0x10
123
124 #define MAC_CFG_DESC_TX_1_MAC_ID_EN_POS 5
125 #define MAC_CFG_DESC_TX_1_MAC_ID_EN_LEN 1
126 #define MAC_CFG_DESC_TX_1_MAC_ID_EN_MSK 0x20
127
128 #define MAC_CFG_DESC_TX_1_MAC_ID_POS 6
129 #define MAC_CFG_DESC_TX_1_MAC_ID_LEN 2
130 #define MAC_CFG_DESC_TX_1_MAC_ID_MSK 0xc0
131
132 #define MAC_CFG_DESC_TX_1_ACK_POLICY_EN_POS 15
133 #define MAC_CFG_DESC_TX_1_ACK_POLICY_EN_LEN 1
134 #define MAC_CFG_DESC_TX_1_ACK_POLICY_EN_MSK 0x8000
135
136 #define MAC_CFG_DESC_TX_1_DST_INDEX_POS 16
137 #define MAC_CFG_DESC_TX_1_DST_INDEX_LEN 4
138 #define MAC_CFG_DESC_TX_1_DST_INDEX_MSK 0xF0000
139
140 #define MAC_CFG_DESC_TX_1_DST_INDEX_EN_POS 20
141 #define MAC_CFG_DESC_TX_1_DST_INDEX_EN_LEN 1
142 #define MAC_CFG_DESC_TX_1_DST_INDEX_EN_MSK 0x100000
143
144 #define MAC_CFG_DESC_TX_1_ACK_POLICY_POS 21
145 #define MAC_CFG_DESC_TX_1_ACK_POLICY_LEN 2
146 #define MAC_CFG_DESC_TX_1_ACK_POLICY_MSK 0x600000
147
148 #define MAC_CFG_DESC_TX_1_LIFETIME_EN_POS 23
149 #define MAC_CFG_DESC_TX_1_LIFETIME_EN_LEN 1
150 #define MAC_CFG_DESC_TX_1_LIFETIME_EN_MSK 0x800000
151
152 #define MAC_CFG_DESC_TX_1_MAX_RETRY_POS 24
153 #define MAC_CFG_DESC_TX_1_MAX_RETRY_LEN 7
154 #define MAC_CFG_DESC_TX_1_MAX_RETRY_MSK 0x7F000000
155
156 #define MAC_CFG_DESC_TX_1_MAX_RETRY_EN_POS 31
157 #define MAC_CFG_DESC_TX_1_MAX_RETRY_EN_LEN 1
158 #define MAC_CFG_DESC_TX_1_MAX_RETRY_EN_MSK 0x80000000
159
160 /* TX MAC Dword 2 */
161 #define MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_POS 0
162 #define MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_LEN 8
163 #define MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_MSK 0xFF
164
165 #define MAC_CFG_DESC_TX_2_RESERVED_POS 8
166 #define MAC_CFG_DESC_TX_2_RESERVED_LEN 10
167 #define MAC_CFG_DESC_TX_2_RESERVED_MSK 0x3FF00
168
169 #define MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_POS 18
170 #define MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_LEN 2
171 #define MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_MSK 0xC0000
172
173 #define MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_POS 20
174 #define MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_LEN 1
175 #define MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_MSK 0x100000
176
177 #define MAC_CFG_DESC_TX_2_VLAN_REMOVAL_EN_POS 21
178 #define MAC_CFG_DESC_TX_2_VLAN_REMOVAL_EN_LEN 1
179 #define MAC_CFG_DESC_TX_2_VLAN_REMOVAL_EN_MSK 0x200000
180
181 /* TX MAC Dword 3 */
182 #define MAC_CFG_DESC_TX_3_UCODE_CMD_POS 0
183 #define MAC_CFG_DESC_TX_3_UCODE_CMD_LEN 32
184 #define MAC_CFG_DESC_TX_3_UCODE_CMD_MSK 0xFFFFFFFF
185
186 /* TX DMA Dword 0 */
187 #define DMA_CFG_DESC_TX_0_L4_LENGTH_POS 0
188 #define DMA_CFG_DESC_TX_0_L4_LENGTH_LEN 8
189 #define DMA_CFG_DESC_TX_0_L4_LENGTH_MSK 0xFF
190
191 #define DMA_CFG_DESC_TX_0_CMD_EOP_POS 8
192 #define DMA_CFG_DESC_TX_0_CMD_EOP_LEN 1
193 #define DMA_CFG_DESC_TX_0_CMD_EOP_MSK 0x100
194
195 #define DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS 9
196 #define DMA_CFG_DESC_TX_0_CMD_MARK_WB_LEN 1
197 #define DMA_CFG_DESC_TX_0_CMD_MARK_WB_MSK 0x200
198
199 #define DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS 10
200 #define DMA_CFG_DESC_TX_0_CMD_DMA_IT_LEN 1
201 #define DMA_CFG_DESC_TX_0_CMD_DMA_IT_MSK 0x400
202
203 #define DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS 11
204 #define DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_LEN 2
205 #define DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_MSK 0x1800
206
207 #define DMA_CFG_DESC_TX_0_TCP_SEG_EN_POS 13
208 #define DMA_CFG_DESC_TX_0_TCP_SEG_EN_LEN 1
209 #define DMA_CFG_DESC_TX_0_TCP_SEG_EN_MSK 0x2000
210
211 #define DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_POS 14
212 #define DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_LEN 1
213 #define DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_MSK 0x4000
214
215 #define DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS 15
216 #define DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_LEN 1
217 #define DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_MSK 0x8000
218
219 #define DMA_CFG_DESC_TX_0_QID_POS 16
220 #define DMA_CFG_DESC_TX_0_QID_LEN 5
221 #define DMA_CFG_DESC_TX_0_QID_MSK 0x1F0000
222
223 #define DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS 21
224 #define DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_LEN 1
225 #define DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_MSK 0x200000
226
227 #define DMA_CFG_DESC_TX_0_L4_TYPE_POS 30
228 #define DMA_CFG_DESC_TX_0_L4_TYPE_LEN 2
229 #define DMA_CFG_DESC_TX_0_L4_TYPE_MSK 0xC0000000 /* L4 type: 0-UDP, 2-TCP */
230
231 #define DMA_CFG_DESC_TX_OFFLOAD_CFG_MAC_LEN_POS 0
232 #define DMA_CFG_DESC_TX_OFFLOAD_CFG_MAC_LEN_LEN 7
233 #define DMA_CFG_DESC_TX_OFFLOAD_CFG_MAC_LEN_MSK 0x7F /* MAC hdr len */
234
235 #define DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS 7
236 #define DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_LEN 1
237 #define DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_MSK 0x80 /* 1-IPv4, 0-IPv6 */
238
239 #define TX_DMA_STATUS_DU BIT(0)
240
241 /* Tx descriptor - DMA part
242 * [dword 0]
243 * bit 0.. 7 : l4_length:8 layer 4 length
244 * bit 8 : cmd_eop:1 This descriptor is the last one in the packet
245 * bit 9 : reserved
246 * bit 10 : cmd_dma_it:1 immediate interrupt
247 * bit 11..12 : SBD - Segment Buffer Details
248 * 00 - Header Segment
249 * 01 - First Data Segment
250 * 10 - Medium Data Segment
251 * 11 - Last Data Segment
252 * bit 13 : TSE - TCP Segmentation Enable
253 * bit 14 : IIC - Directs the HW to Insert IPv4 Checksum
254 * bit 15 : ITC - Directs the HW to Insert TCP/UDP Checksum
255 * bit 16..20 : QID - The target QID that the packet should be stored
256 * in the MAC.
257 * bit 21 : PO - Pseudo header Offload:
258 * 0 - Use the pseudo header value from the TCP checksum field
259 * 1- Calculate Pseudo header Checksum
260 * bit 22 : NC - No UDP Checksum
261 * bit 23..29 : reserved
262 * bit 30..31 : L4T - Layer 4 Type: 00 - UDP , 10 - TCP , 10, 11 - Reserved
263 * If L4Len equal 0, no L4 at all
264 * [dword 1]
265 * bit 0..31 : addr_low:32 The payload buffer low address
266 * [dword 2]
267 * bit 0..15 : addr_high:16 The payload buffer high address
268 * bit 16..23 : ip_length:8 The IP header length for the TX IP checksum
269 * offload feature
270 * bit 24..30 : mac_length:7
271 * bit 31 : ip_version:1 1 - IPv4, 0 - IPv6
272 * [dword 3]
273 * [byte 12] error
274 * bit 0 2 : mac_status:3
275 * bit 3 7 : reserved:5
276 * [byte 13] status
277 * bit 0 : DU:1 Descriptor Used
278 * bit 1 7 : reserved:7
279 * [word 7] length
280 */
281 struct vring_tx_dma {
282 u32 d0;
283 struct wil_ring_dma_addr addr;
284 u8 ip_length;
285 u8 b11; /* 0..6: mac_length; 7:ip_version */
286 u8 error; /* 0..2: err; 3..7: reserved; */
287 u8 status; /* 0: used; 1..7; reserved */
288 __le16 length;
289 } __packed;
290
291 /* TSO type used in dma descriptor d0 bits 11-12 */
292 enum {
293 wil_tso_type_hdr = 0,
294 wil_tso_type_first = 1,
295 wil_tso_type_mid = 2,
296 wil_tso_type_lst = 3,
297 };
298
299 /* Rx descriptor - MAC part
300 * [dword 0]
301 * bit 0.. 3 : tid:4 The QoS (b3-0) TID Field
302 * bit 4.. 6 : cid:3 The Source index that was found during parsing the TA.
303 * This field is used to define the source of the packet
304 * bit 7 : MAC_id_valid:1, 1 if MAC virtual number is valid.
305 * bit 8.. 9 : mid:2 The MAC virtual number
306 * bit 10..11 : frame_type:2 : The FC (b3-2) - MPDU Type
307 * (management, data, control and extension)
308 * bit 12..15 : frame_subtype:4 : The FC (b7-4) - Frame Subtype
309 * bit 16..27 : seq_number:12 The received Sequence number field
310 * bit 28..31 : extended:4 extended subtype
311 * [dword 1]
312 * bit 0.. 3 : reserved
313 * bit 4.. 5 : key_id:2
314 * bit 6 : decrypt_bypass:1
315 * bit 7 : security:1 FC (b14)
316 * bit 8.. 9 : ds_bits:2 FC (b9-8)
317 * bit 10 : a_msdu_present:1 QoS (b7)
318 * bit 11 : a_msdu_type:1 QoS (b8)
319 * bit 12 : a_mpdu:1 part of AMPDU aggregation
320 * bit 13 : broadcast:1
321 * bit 14 : mutlicast:1
322 * bit 15 : reserved:1
323 * bit 16..20 : rx_mac_qid:5 The Queue Identifier that the packet
324 * is received from
325 * bit 21..24 : mcs:4
326 * bit 25..28 : mic_icr:4 this signal tells the DMA to assert an interrupt
327 * after it writes the packet
328 * bit 29..31 : reserved:3
329 * [dword 2]
330 * bit 0.. 2 : time_slot:3 The timeslot that the MPDU is received
331 * bit 3.. 4 : fc_protocol_ver:1 The FC (b1-0) - Protocol Version
332 * bit 5 : fc_order:1 The FC Control (b15) -Order
333 * bit 6.. 7 : qos_ack_policy:2 The QoS (b6-5) ack policy Field
334 * bit 8 : esop:1 The QoS (b4) ESOP field
335 * bit 9 : qos_rdg_more_ppdu:1 The QoS (b9) RDG field
336 * bit 10..14 : qos_reserved:5 The QoS (b14-10) Reserved field
337 * bit 15 : qos_ac_constraint:1 QoS (b15)
338 * bit 16..31 : pn_15_0:16 low 2 bytes of PN
339 * [dword 3]
340 * bit 0..31 : pn_47_16:32 high 4 bytes of PN
341 */
342 struct vring_rx_mac {
343 u32 d0;
344 u32 d1;
345 u16 w4;
346 struct_group_attr(pn, __packed,
347 u16 pn_15_0;
348 u32 pn_47_16;
349 );
350 } __packed;
351
352 /* Rx descriptor - DMA part
353 * [dword 0]
354 * bit 0.. 7 : l4_length:8 layer 4 length. The field is only valid if
355 * L4I bit is set
356 * bit 8 : cmd_eop:1 set to 1
357 * bit 9 : cmd_rt:1 set to 1
358 * bit 10 : cmd_dma_it:1 immediate interrupt
359 * bit 11..15 : reserved:5
360 * bit 16..29 : phy_info_length:14 It is valid when the PII is set.
361 * When the FFM bit is set bits 29-27 are used for
362 * Flex Filter Match. Matching Index to one of the L2
363 * EtherType Flex Filter
364 * bit 30..31 : l4_type:2 valid if the L4I bit is set in the status field
365 * 00 - UDP, 01 - TCP, 10, 11 - reserved
366 * [dword 1]
367 * bit 0..31 : addr_low:32 The payload buffer low address
368 * [dword 2]
369 * bit 0..15 : addr_high:16 The payload buffer high address
370 * bit 16..23 : ip_length:8 The filed is valid only if the L3I bit is set
371 * bit 24..30 : mac_length:7
372 * bit 31 : ip_version:1 1 - IPv4, 0 - IPv6
373 * [dword 3]
374 * [byte 12] error
375 * bit 0 : FCS:1
376 * bit 1 : MIC:1
377 * bit 2 : Key miss:1
378 * bit 3 : Replay:1
379 * bit 4 : L3:1 IPv4 checksum
380 * bit 5 : L4:1 TCP/UDP checksum
381 * bit 6 7 : reserved:2
382 * [byte 13] status
383 * bit 0 : DU:1 Descriptor Used
384 * bit 1 : EOP:1 The descriptor indicates the End of Packet
385 * bit 2 : error:1
386 * bit 3 : MI:1 MAC Interrupt is asserted (according to parser decision)
387 * bit 4 : L3I:1 L3 identified and checksum calculated
388 * bit 5 : L4I:1 L4 identified and checksum calculated
389 * bit 6 : PII:1 PHY Info Included in the packet
390 * bit 7 : FFM:1 EtherType Flex Filter Match
391 * [word 7] length
392 */
393
394 #define RX_DMA_D0_CMD_DMA_EOP BIT(8)
395 #define RX_DMA_D0_CMD_DMA_RT BIT(9) /* always 1 */
396 #define RX_DMA_D0_CMD_DMA_IT BIT(10) /* interrupt */
397 #define RX_MAC_D0_MAC_ID_VALID BIT(7)
398
399 /* Error field */
400 #define RX_DMA_ERROR_FCS BIT(0)
401 #define RX_DMA_ERROR_MIC BIT(1)
402 #define RX_DMA_ERROR_KEY BIT(2) /* Key missing */
403 #define RX_DMA_ERROR_REPLAY BIT(3)
404 #define RX_DMA_ERROR_L3_ERR BIT(4)
405 #define RX_DMA_ERROR_L4_ERR BIT(5)
406
407 /* Status field */
408 #define RX_DMA_STATUS_DU BIT(0)
409 #define RX_DMA_STATUS_EOP BIT(1)
410 #define RX_DMA_STATUS_ERROR BIT(2)
411 #define RX_DMA_STATUS_MI BIT(3) /* MAC Interrupt is asserted */
412 #define RX_DMA_STATUS_L3I BIT(4)
413 #define RX_DMA_STATUS_L4I BIT(5)
414 #define RX_DMA_STATUS_PHY_INFO BIT(6)
415 #define RX_DMA_STATUS_FFM BIT(7) /* EtherType Flex Filter Match */
416
417 /* IEEE 802.11, 8.5.2 EAPOL-Key frames */
418 #define WIL_KEY_INFO_KEY_TYPE BIT(3) /* val of 1 = Pairwise, 0 = Group key */
419
420 #define WIL_KEY_INFO_MIC BIT(8)
421 #define WIL_KEY_INFO_ENCR_KEY_DATA BIT(12) /* for rsn only */
422
423 #define WIL_EAP_NONCE_LEN 32
424 #define WIL_EAP_KEY_RSC_LEN 8
425 #define WIL_EAP_REPLAY_COUNTER_LEN 8
426 #define WIL_EAP_KEY_IV_LEN 16
427 #define WIL_EAP_KEY_ID_LEN 8
428
429 enum {
430 WIL_1X_TYPE_EAP_PACKET = 0,
431 WIL_1X_TYPE_EAPOL_START = 1,
432 WIL_1X_TYPE_EAPOL_LOGOFF = 2,
433 WIL_1X_TYPE_EAPOL_KEY = 3,
434 };
435
436 #define WIL_EAPOL_KEY_TYPE_RSN 2
437 #define WIL_EAPOL_KEY_TYPE_WPA 254
438
439 struct wil_1x_hdr {
440 u8 version;
441 u8 type;
442 __be16 length;
443 /* followed by data */
444 } __packed;
445
446 struct wil_eapol_key {
447 u8 type;
448 __be16 key_info;
449 __be16 key_length;
450 u8 replay_counter[WIL_EAP_REPLAY_COUNTER_LEN];
451 u8 key_nonce[WIL_EAP_NONCE_LEN];
452 u8 key_iv[WIL_EAP_KEY_IV_LEN];
453 u8 key_rsc[WIL_EAP_KEY_RSC_LEN];
454 u8 key_id[WIL_EAP_KEY_ID_LEN];
455 } __packed;
456
457 struct vring_rx_dma {
458 u32 d0;
459 struct wil_ring_dma_addr addr;
460 u8 ip_length;
461 u8 b11;
462 u8 error;
463 u8 status;
464 __le16 length;
465 } __packed;
466
467 struct vring_tx_desc {
468 struct vring_tx_mac mac;
469 struct vring_tx_dma dma;
470 } __packed;
471
472 union wil_tx_desc {
473 struct vring_tx_desc legacy;
474 struct wil_tx_enhanced_desc enhanced;
475 } __packed;
476
477 struct vring_rx_desc {
478 struct vring_rx_mac mac;
479 struct vring_rx_dma dma;
480 } __packed;
481
482 union wil_rx_desc {
483 struct vring_rx_desc legacy;
484 struct wil_rx_enhanced_desc enhanced;
485 } __packed;
486
487 union wil_ring_desc {
488 union wil_tx_desc tx;
489 union wil_rx_desc rx;
490 } __packed;
491
492 struct packet_rx_info {
493 u8 cid;
494 };
495
496 /* this struct will be stored in the skb cb buffer
497 * max length of the struct is limited to 48 bytes
498 */
499 struct skb_rx_info {
500 struct vring_rx_desc rx_desc;
501 struct packet_rx_info rx_info;
502 };
503
wil_rxdesc_tid(struct vring_rx_desc * d)504 static inline int wil_rxdesc_tid(struct vring_rx_desc *d)
505 {
506 return WIL_GET_BITS(d->mac.d0, 0, 3);
507 }
508
wil_rxdesc_cid(struct vring_rx_desc * d)509 static inline int wil_rxdesc_cid(struct vring_rx_desc *d)
510 {
511 return WIL_GET_BITS(d->mac.d0, 4, 6);
512 }
513
wil_rxdesc_mid(struct vring_rx_desc * d)514 static inline int wil_rxdesc_mid(struct vring_rx_desc *d)
515 {
516 return (d->mac.d0 & RX_MAC_D0_MAC_ID_VALID) ?
517 WIL_GET_BITS(d->mac.d0, 8, 9) : 0;
518 }
519
wil_rxdesc_ftype(struct vring_rx_desc * d)520 static inline int wil_rxdesc_ftype(struct vring_rx_desc *d)
521 {
522 return WIL_GET_BITS(d->mac.d0, 10, 11);
523 }
524
wil_rxdesc_subtype(struct vring_rx_desc * d)525 static inline int wil_rxdesc_subtype(struct vring_rx_desc *d)
526 {
527 return WIL_GET_BITS(d->mac.d0, 12, 15);
528 }
529
530 /* 1-st byte (with frame type/subtype) of FC field */
wil_rxdesc_fc1(struct vring_rx_desc * d)531 static inline u8 wil_rxdesc_fc1(struct vring_rx_desc *d)
532 {
533 return (u8)(WIL_GET_BITS(d->mac.d0, 10, 15) << 2);
534 }
535
wil_rxdesc_seq(struct vring_rx_desc * d)536 static inline int wil_rxdesc_seq(struct vring_rx_desc *d)
537 {
538 return WIL_GET_BITS(d->mac.d0, 16, 27);
539 }
540
wil_rxdesc_ext_subtype(struct vring_rx_desc * d)541 static inline int wil_rxdesc_ext_subtype(struct vring_rx_desc *d)
542 {
543 return WIL_GET_BITS(d->mac.d0, 28, 31);
544 }
545
wil_rxdesc_retry(struct vring_rx_desc * d)546 static inline int wil_rxdesc_retry(struct vring_rx_desc *d)
547 {
548 return WIL_GET_BITS(d->mac.d0, 31, 31);
549 }
550
wil_rxdesc_key_id(struct vring_rx_desc * d)551 static inline int wil_rxdesc_key_id(struct vring_rx_desc *d)
552 {
553 return WIL_GET_BITS(d->mac.d1, 4, 5);
554 }
555
wil_rxdesc_security(struct vring_rx_desc * d)556 static inline int wil_rxdesc_security(struct vring_rx_desc *d)
557 {
558 return WIL_GET_BITS(d->mac.d1, 7, 7);
559 }
560
wil_rxdesc_ds_bits(struct vring_rx_desc * d)561 static inline int wil_rxdesc_ds_bits(struct vring_rx_desc *d)
562 {
563 return WIL_GET_BITS(d->mac.d1, 8, 9);
564 }
565
wil_rxdesc_mcs(struct vring_rx_desc * d)566 static inline int wil_rxdesc_mcs(struct vring_rx_desc *d)
567 {
568 return WIL_GET_BITS(d->mac.d1, 21, 24);
569 }
570
wil_rxdesc_mcast(struct vring_rx_desc * d)571 static inline int wil_rxdesc_mcast(struct vring_rx_desc *d)
572 {
573 return WIL_GET_BITS(d->mac.d1, 13, 14);
574 }
575
wil_skb_rxdesc(struct sk_buff * skb)576 static inline struct vring_rx_desc *wil_skb_rxdesc(struct sk_buff *skb)
577 {
578 return (void *)skb->cb;
579 }
580
wil_ring_is_empty(struct wil_ring * ring)581 static inline int wil_ring_is_empty(struct wil_ring *ring)
582 {
583 return ring->swhead == ring->swtail;
584 }
585
wil_ring_next_tail(struct wil_ring * ring)586 static inline u32 wil_ring_next_tail(struct wil_ring *ring)
587 {
588 return (ring->swtail + 1) % ring->size;
589 }
590
wil_ring_advance_head(struct wil_ring * ring,int n)591 static inline void wil_ring_advance_head(struct wil_ring *ring, int n)
592 {
593 ring->swhead = (ring->swhead + n) % ring->size;
594 }
595
wil_ring_is_full(struct wil_ring * ring)596 static inline int wil_ring_is_full(struct wil_ring *ring)
597 {
598 return wil_ring_next_tail(ring) == ring->swhead;
599 }
600
wil_skb_get_da(struct sk_buff * skb)601 static inline u8 *wil_skb_get_da(struct sk_buff *skb)
602 {
603 struct ethhdr *eth = (void *)skb->data;
604
605 return eth->h_dest;
606 }
607
wil_skb_get_sa(struct sk_buff * skb)608 static inline u8 *wil_skb_get_sa(struct sk_buff *skb)
609 {
610 struct ethhdr *eth = (void *)skb->data;
611
612 return eth->h_source;
613 }
614
wil_need_txstat(struct sk_buff * skb)615 static inline bool wil_need_txstat(struct sk_buff *skb)
616 {
617 const u8 *da = wil_skb_get_da(skb);
618
619 return is_unicast_ether_addr(da) && skb->sk &&
620 (skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS);
621 }
622
wil_consume_skb(struct sk_buff * skb,bool acked)623 static inline void wil_consume_skb(struct sk_buff *skb, bool acked)
624 {
625 if (unlikely(wil_need_txstat(skb)))
626 skb_complete_wifi_ack(skb, acked);
627 else
628 acked ? dev_consume_skb_any(skb) : dev_kfree_skb_any(skb);
629 }
630
631 /* Used space in Tx ring */
wil_ring_used_tx(struct wil_ring * ring)632 static inline int wil_ring_used_tx(struct wil_ring *ring)
633 {
634 u32 swhead = ring->swhead;
635 u32 swtail = ring->swtail;
636
637 return (ring->size + swhead - swtail) % ring->size;
638 }
639
640 /* Available space in Tx ring */
wil_ring_avail_tx(struct wil_ring * ring)641 static inline int wil_ring_avail_tx(struct wil_ring *ring)
642 {
643 return ring->size - wil_ring_used_tx(ring) - 1;
644 }
645
wil_get_min_tx_ring_id(struct wil6210_priv * wil)646 static inline int wil_get_min_tx_ring_id(struct wil6210_priv *wil)
647 {
648 /* In Enhanced DMA ring 0 is reserved for RX */
649 return wil->use_enhanced_dma_hw ? 1 : 0;
650 }
651
652 /* similar to ieee80211_ version, but FC contain only 1-st byte */
wil_is_back_req(u8 fc)653 static inline int wil_is_back_req(u8 fc)
654 {
655 return (fc & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
656 (IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
657 }
658
659 /* wil_val_in_range - check if value in [min,max) */
wil_val_in_range(int val,int min,int max)660 static inline bool wil_val_in_range(int val, int min, int max)
661 {
662 return val >= min && val < max;
663 }
664
wil_skb_get_cid(struct sk_buff * skb)665 static inline u8 wil_skb_get_cid(struct sk_buff *skb)
666 {
667 struct skb_rx_info *skb_rx_info = (void *)skb->cb;
668
669 return skb_rx_info->rx_info.cid;
670 }
671
wil_skb_set_cid(struct sk_buff * skb,u8 cid)672 static inline void wil_skb_set_cid(struct sk_buff *skb, u8 cid)
673 {
674 struct skb_rx_info *skb_rx_info = (void *)skb->cb;
675
676 skb_rx_info->rx_info.cid = cid;
677 }
678
679 void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev);
680 void wil_netif_rx(struct sk_buff *skb, struct net_device *ndev, int cid,
681 struct wil_net_stats *stats, bool gro);
682 void wil_rx_reorder(struct wil6210_priv *wil, struct sk_buff *skb);
683 void wil_rx_bar(struct wil6210_priv *wil, struct wil6210_vif *vif,
684 u8 cid, u8 tid, u16 seq);
685 struct wil_tid_ampdu_rx *wil_tid_ampdu_rx_alloc(struct wil6210_priv *wil,
686 int size, u16 ssn);
687 void wil_tid_ampdu_rx_free(struct wil6210_priv *wil,
688 struct wil_tid_ampdu_rx *r);
689 void wil_tx_data_init(struct wil_ring_tx_data *txdata);
690 void wil_init_txrx_ops_legacy_dma(struct wil6210_priv *wil);
691 void wil_tx_latency_calc(struct wil6210_priv *wil, struct sk_buff *skb,
692 struct wil_sta_info *sta);
693
694 #endif /* WIL6210_TXRX_H */
695