xref: /linux/drivers/net/wireless/ralink/rt2x00/rt2800mmio.h (revision cbecf716ca618fd44feda6bd9a64a8179d031fc5)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*	Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
3  *	Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
4  *	Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
5  *	Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
6  *	Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
7  *	Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
8  *	Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
9  *	Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
10  *	<http://rt2x00.serialmonkey.com>
11  */
12 
13 /*	Module: rt2800mmio
14  *	Abstract: forward declarations for the rt2800mmio module.
15  */
16 
17 #ifndef RT2800MMIO_H
18 #define RT2800MMIO_H
19 
20 /*
21  * Queue register offset macros
22  */
23 #define TX_QUEUE_REG_OFFSET	0x10
24 #define TX_BASE_PTR(__x)	(TX_BASE_PTR0 + ((__x) * TX_QUEUE_REG_OFFSET))
25 #define TX_MAX_CNT(__x)		(TX_MAX_CNT0 + ((__x) * TX_QUEUE_REG_OFFSET))
26 #define TX_CTX_IDX(__x)		(TX_CTX_IDX0 + ((__x) * TX_QUEUE_REG_OFFSET))
27 #define TX_DTX_IDX(__x)		(TX_DTX_IDX0 + ((__x) * TX_QUEUE_REG_OFFSET))
28 
29 /*
30  * DMA descriptor defines.
31  */
32 #define TXD_DESC_SIZE			(4 * sizeof(__le32))
33 #define RXD_DESC_SIZE			(4 * sizeof(__le32))
34 
35 /*
36  * TX descriptor format for TX, PRIO and Beacon Ring.
37  */
38 
39 /*
40  * Word0
41  */
42 #define TXD_W0_SD_PTR0			FIELD32(0xffffffff)
43 
44 /*
45  * Word1
46  */
47 #define TXD_W1_SD_LEN1			FIELD32(0x00003fff)
48 #define TXD_W1_LAST_SEC1		FIELD32(0x00004000)
49 #define TXD_W1_BURST			FIELD32(0x00008000)
50 #define TXD_W1_SD_LEN0			FIELD32(0x3fff0000)
51 #define TXD_W1_LAST_SEC0		FIELD32(0x40000000)
52 #define TXD_W1_DMA_DONE			FIELD32(0x80000000)
53 
54 /*
55  * Word2
56  */
57 #define TXD_W2_SD_PTR1			FIELD32(0xffffffff)
58 
59 /*
60  * Word3
61  * WIV: Wireless Info Valid. 1: Driver filled WI, 0: DMA needs to copy WI
62  * QSEL: Select on-chip FIFO ID for 2nd-stage output scheduler.
63  *       0:MGMT, 1:HCCA 2:EDCA
64  */
65 #define TXD_W3_WIV			FIELD32(0x01000000)
66 #define TXD_W3_QSEL			FIELD32(0x06000000)
67 #define TXD_W3_TCO			FIELD32(0x20000000)
68 #define TXD_W3_UCO			FIELD32(0x40000000)
69 #define TXD_W3_ICO			FIELD32(0x80000000)
70 
71 /*
72  * RX descriptor format for RX Ring.
73  */
74 
75 /*
76  * Word0
77  */
78 #define RXD_W0_SDP0			FIELD32(0xffffffff)
79 
80 /*
81  * Word1
82  */
83 #define RXD_W1_SDL1			FIELD32(0x00003fff)
84 #define RXD_W1_SDL0			FIELD32(0x3fff0000)
85 #define RXD_W1_LS0			FIELD32(0x40000000)
86 #define RXD_W1_DMA_DONE			FIELD32(0x80000000)
87 
88 /*
89  * Word2
90  */
91 #define RXD_W2_SDP1			FIELD32(0xffffffff)
92 
93 /*
94  * Word3
95  * AMSDU: RX with 802.3 header, not 802.11 header.
96  * DECRYPTED: This frame is being decrypted.
97  */
98 #define RXD_W3_BA			FIELD32(0x00000001)
99 #define RXD_W3_DATA			FIELD32(0x00000002)
100 #define RXD_W3_NULLDATA			FIELD32(0x00000004)
101 #define RXD_W3_FRAG			FIELD32(0x00000008)
102 #define RXD_W3_UNICAST_TO_ME		FIELD32(0x00000010)
103 #define RXD_W3_MULTICAST		FIELD32(0x00000020)
104 #define RXD_W3_BROADCAST		FIELD32(0x00000040)
105 #define RXD_W3_MY_BSS			FIELD32(0x00000080)
106 #define RXD_W3_CRC_ERROR		FIELD32(0x00000100)
107 #define RXD_W3_CIPHER_ERROR		FIELD32(0x00000600)
108 #define RXD_W3_AMSDU			FIELD32(0x00000800)
109 #define RXD_W3_HTC			FIELD32(0x00001000)
110 #define RXD_W3_RSSI			FIELD32(0x00002000)
111 #define RXD_W3_L2PAD			FIELD32(0x00004000)
112 #define RXD_W3_AMPDU			FIELD32(0x00008000)
113 #define RXD_W3_DECRYPTED		FIELD32(0x00010000)
114 #define RXD_W3_PLCP_SIGNAL		FIELD32(0x00020000)
115 #define RXD_W3_PLCP_RSSI		FIELD32(0x00040000)
116 
117 unsigned int rt2800mmio_get_dma_done(struct data_queue *queue);
118 
119 /* TX descriptor initialization */
120 __le32 *rt2800mmio_get_txwi(struct queue_entry *entry);
121 void rt2800mmio_write_tx_desc(struct queue_entry *entry,
122 			      struct txentry_desc *txdesc);
123 
124 /* RX control handlers */
125 void rt2800mmio_fill_rxdone(struct queue_entry *entry,
126 			    struct rxdone_entry_desc *rxdesc);
127 
128 /* Interrupt functions */
129 void rt2800mmio_txstatus_tasklet(struct tasklet_struct *t);
130 void rt2800mmio_pretbtt_tasklet(struct tasklet_struct *t);
131 void rt2800mmio_tbtt_tasklet(struct tasklet_struct *t);
132 void rt2800mmio_rxdone_tasklet(struct tasklet_struct *t);
133 void rt2800mmio_autowake_tasklet(struct tasklet_struct *t);
134 irqreturn_t rt2800mmio_interrupt(int irq, void *dev_instance);
135 void rt2800mmio_toggle_irq(struct rt2x00_dev *rt2x00dev,
136 			   enum dev_state state);
137 
138 /* Queue handlers */
139 void rt2800mmio_start_queue(struct data_queue *queue);
140 void rt2800mmio_kick_queue(struct data_queue *queue);
141 void rt2800mmio_flush_queue(struct data_queue *queue, bool drop);
142 void rt2800mmio_stop_queue(struct data_queue *queue);
143 void rt2800mmio_queue_init(struct data_queue *queue);
144 
145 /* Initialization functions */
146 int rt2800mmio_probe_hw(struct rt2x00_dev *rt2x00dev);
147 bool rt2800mmio_get_entry_state(struct queue_entry *entry);
148 void rt2800mmio_clear_entry(struct queue_entry *entry);
149 int rt2800mmio_init_queues(struct rt2x00_dev *rt2x00dev);
150 int rt2800mmio_init_registers(struct rt2x00_dev *rt2x00dev);
151 
152 /* Device state switch handlers. */
153 int rt2800mmio_enable_radio(struct rt2x00_dev *rt2x00dev);
154 
155 #endif /* RT2800MMIO_H */
156