1 /*
2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 #ifndef __MT76_DMA_H
17 #define __MT76_DMA_H
18 
19 #define DMA_DUMMY_DATA			((void *)~0)
20 
21 #define MT_RING_SIZE			0x10
22 
23 #define MT_DMA_CTL_SD_LEN1		GENMASK(13, 0)
24 #define MT_DMA_CTL_LAST_SEC1		BIT(14)
25 #define MT_DMA_CTL_BURST		BIT(15)
26 #define MT_DMA_CTL_SD_LEN0		GENMASK(29, 16)
27 #define MT_DMA_CTL_LAST_SEC0		BIT(30)
28 #define MT_DMA_CTL_DMA_DONE		BIT(31)
29 
30 #define MT_DMA_HDR_LEN			4
31 #define MT_RX_INFO_LEN			4
32 #define MT_FCE_INFO_LEN			4
33 #define MT_RX_RXWI_LEN			32
34 
35 struct mt76_desc {
36 	__le32 buf0;
37 	__le32 ctrl;
38 	__le32 buf1;
39 	__le32 info;
40 } __packed __aligned(4);
41 
42 enum mt76_qsel {
43 	MT_QSEL_MGMT,
44 	MT_QSEL_HCCA,
45 	MT_QSEL_EDCA,
46 	MT_QSEL_EDCA_2,
47 };
48 
49 enum mt76_mcu_evt_type {
50 	EVT_CMD_DONE,
51 	EVT_CMD_ERROR,
52 	EVT_CMD_RETRY,
53 	EVT_EVENT_PWR_RSP,
54 	EVT_EVENT_WOW_RSP,
55 	EVT_EVENT_CARRIER_DETECT_RSP,
56 	EVT_EVENT_DFS_DETECT_RSP,
57 };
58 
59 void mt76_dma_attach(struct mt76_dev *dev);
60 void mt76_dma_cleanup(struct mt76_dev *dev);
61 
62 #endif
63