1 /* SPDX-License-Identifier: ISC */
2 /*
3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4  */
5 #ifndef __MT76_DMA_H
6 #define __MT76_DMA_H
7 
8 #define DMA_DUMMY_DATA			((void *)~0)
9 
10 #define MT_RING_SIZE			0x10
11 
12 #define MT_DMA_CTL_SD_LEN1		GENMASK(13, 0)
13 #define MT_DMA_CTL_LAST_SEC1		BIT(14)
14 #define MT_DMA_CTL_BURST		BIT(15)
15 #define MT_DMA_CTL_SD_LEN0		GENMASK(29, 16)
16 #define MT_DMA_CTL_LAST_SEC0		BIT(30)
17 #define MT_DMA_CTL_DMA_DONE		BIT(31)
18 #define MT_DMA_CTL_TO_HOST		BIT(8)
19 #define MT_DMA_CTL_TO_HOST_A		BIT(12)
20 #define MT_DMA_CTL_DROP			BIT(14)
21 #define MT_DMA_CTL_TOKEN		GENMASK(31, 16)
22 
23 #define MT_DMA_PPE_CPU_REASON		GENMASK(15, 11)
24 #define MT_DMA_PPE_ENTRY		GENMASK(30, 16)
25 #define MT_DMA_INFO_PPE_VLD		BIT(31)
26 
27 #define MT_DMA_HDR_LEN			4
28 #define MT_RX_INFO_LEN			4
29 #define MT_FCE_INFO_LEN			4
30 #define MT_RX_RXWI_LEN			32
31 
32 struct mt76_desc {
33 	__le32 buf0;
34 	__le32 ctrl;
35 	__le32 buf1;
36 	__le32 info;
37 } __packed __aligned(4);
38 
39 enum mt76_qsel {
40 	MT_QSEL_MGMT,
41 	MT_QSEL_HCCA,
42 	MT_QSEL_EDCA,
43 	MT_QSEL_EDCA_2,
44 };
45 
46 enum mt76_mcu_evt_type {
47 	EVT_CMD_DONE,
48 	EVT_CMD_ERROR,
49 	EVT_CMD_RETRY,
50 	EVT_EVENT_PWR_RSP,
51 	EVT_EVENT_WOW_RSP,
52 	EVT_EVENT_CARRIER_DETECT_RSP,
53 	EVT_EVENT_DFS_DETECT_RSP,
54 };
55 
56 int mt76_dma_rx_poll(struct napi_struct *napi, int budget);
57 void mt76_dma_attach(struct mt76_dev *dev);
58 void mt76_dma_cleanup(struct mt76_dev *dev);
59 
60 #endif
61