-
Notifications
You must be signed in to change notification settings - Fork 342
/
mt792x_usb.c
317 lines (252 loc) · 8.11 KB
/
mt792x_usb.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
// SPDX-License-Identifier: ISC
/* Copyright (C) 2023 MediaTek Inc.
*
* Author: Lorenzo Bianconi <[email protected]>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
#include "mt792x.h"
#include "mt76_connac2_mac.h"
u32 mt792xu_rr(struct mt76_dev *dev, u32 addr)
{
u32 ret;
mutex_lock(&dev->usb.usb_ctrl_mtx);
ret = ___mt76u_rr(dev, MT_VEND_READ_EXT,
USB_DIR_IN | MT_USB_TYPE_VENDOR, addr);
mutex_unlock(&dev->usb.usb_ctrl_mtx);
return ret;
}
EXPORT_SYMBOL_GPL(mt792xu_rr);
void mt792xu_wr(struct mt76_dev *dev, u32 addr, u32 val)
{
mutex_lock(&dev->usb.usb_ctrl_mtx);
___mt76u_wr(dev, MT_VEND_WRITE_EXT,
USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
mutex_unlock(&dev->usb.usb_ctrl_mtx);
}
EXPORT_SYMBOL_GPL(mt792xu_wr);
u32 mt792xu_rmw(struct mt76_dev *dev, u32 addr, u32 mask, u32 val)
{
mutex_lock(&dev->usb.usb_ctrl_mtx);
val |= ___mt76u_rr(dev, MT_VEND_READ_EXT,
USB_DIR_IN | MT_USB_TYPE_VENDOR, addr) & ~mask;
___mt76u_wr(dev, MT_VEND_WRITE_EXT,
USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
mutex_unlock(&dev->usb.usb_ctrl_mtx);
return val;
}
EXPORT_SYMBOL_GPL(mt792xu_rmw);
void mt792xu_copy(struct mt76_dev *dev, u32 offset, const void *data, int len)
{
struct mt76_usb *usb = &dev->usb;
int ret, i = 0, batch_len;
const u8 *val = data;
len = round_up(len, 4);
mutex_lock(&usb->usb_ctrl_mtx);
while (i < len) {
batch_len = min_t(int, usb->data_len, len - i);
memcpy(usb->data, val + i, batch_len);
ret = __mt76u_vendor_request(dev, MT_VEND_WRITE_EXT,
USB_DIR_OUT | MT_USB_TYPE_VENDOR,
(offset + i) >> 16, offset + i,
usb->data, batch_len);
if (ret < 0)
break;
i += batch_len;
}
mutex_unlock(&usb->usb_ctrl_mtx);
}
EXPORT_SYMBOL_GPL(mt792xu_copy);
int mt792xu_mcu_power_on(struct mt792x_dev *dev)
{
int ret;
ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
USB_DIR_OUT | MT_USB_TYPE_VENDOR,
0x0, 0x1, NULL, 0);
if (ret)
return ret;
if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
MT_TOP_MISC2_FW_PWR_ON, 500)) {
dev_err(dev->mt76.dev, "Timeout for power on\n");
ret = -EIO;
}
return ret;
}
EXPORT_SYMBOL_GPL(mt792xu_mcu_power_on);
static void mt792xu_cleanup(struct mt792x_dev *dev)
{
clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
mt792xu_wfsys_reset(dev);
skb_queue_purge(&dev->mt76.mcu.res_q);
mt76u_queues_deinit(&dev->mt76);
}
static u32 mt792xu_uhw_rr(struct mt76_dev *dev, u32 addr)
{
u32 ret;
mutex_lock(&dev->usb.usb_ctrl_mtx);
ret = ___mt76u_rr(dev, MT_VEND_DEV_MODE,
USB_DIR_IN | MT_USB_TYPE_UHW_VENDOR, addr);
mutex_unlock(&dev->usb.usb_ctrl_mtx);
return ret;
}
static void mt792xu_uhw_wr(struct mt76_dev *dev, u32 addr, u32 val)
{
mutex_lock(&dev->usb.usb_ctrl_mtx);
___mt76u_wr(dev, MT_VEND_WRITE,
USB_DIR_OUT | MT_USB_TYPE_UHW_VENDOR, addr, val);
mutex_unlock(&dev->usb.usb_ctrl_mtx);
}
static void mt792xu_dma_prefetch(struct mt792x_dev *dev)
{
#define DMA_PREFETCH_CONF(_idx_, _cnt_, _base_) \
mt76_rmw(dev, MT_UWFDMA0_TX_RING_EXT_CTRL((_idx_)), \
MT_WPDMA0_MAX_CNT_MASK | MT_WPDMA0_BASE_PTR_MASK, \
FIELD_PREP(MT_WPDMA0_MAX_CNT_MASK, (_cnt_)) | \
FIELD_PREP(MT_WPDMA0_BASE_PTR_MASK, (_base_)))
DMA_PREFETCH_CONF(0, 4, 0x080);
DMA_PREFETCH_CONF(1, 4, 0x0c0);
DMA_PREFETCH_CONF(2, 4, 0x100);
DMA_PREFETCH_CONF(3, 4, 0x140);
DMA_PREFETCH_CONF(4, 4, 0x180);
DMA_PREFETCH_CONF(16, 4, 0x280);
DMA_PREFETCH_CONF(17, 4, 0x2c0);
}
static void mt792xu_wfdma_init(struct mt792x_dev *dev)
{
int i;
mt792xu_dma_prefetch(dev);
mt76_clear(dev, MT_UWFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_OMIT_RX_INFO);
mt76_set(dev, MT_UWFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_OMIT_TX_INFO |
MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2 |
MT_WFDMA0_GLO_CFG_FW_DWLD_BYPASS_DMASHDL |
MT_WFDMA0_GLO_CFG_TX_DMA_EN |
MT_WFDMA0_GLO_CFG_RX_DMA_EN);
mt76_rmw(dev, MT_DMASHDL_REFILL, MT_DMASHDL_REFILL_MASK, 0xffe00000);
mt76_clear(dev, MT_DMASHDL_PAGE, MT_DMASHDL_GROUP_SEQ_ORDER);
mt76_rmw(dev, MT_DMASHDL_PKT_MAX_SIZE,
MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE,
FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) |
FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 0));
for (i = 0; i < 5; i++)
mt76_wr(dev, MT_DMASHDL_GROUP_QUOTA(i),
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x3) |
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0xfff));
for (i = 5; i < 16; i++)
mt76_wr(dev, MT_DMASHDL_GROUP_QUOTA(i),
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x0) |
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x0));
mt76_wr(dev, MT_DMASHDL_Q_MAP(0), 0x32013201);
mt76_wr(dev, MT_DMASHDL_Q_MAP(1), 0x32013201);
mt76_wr(dev, MT_DMASHDL_Q_MAP(2), 0x55555444);
mt76_wr(dev, MT_DMASHDL_Q_MAP(3), 0x55555444);
mt76_wr(dev, MT_DMASHDL_SCHED_SET(0), 0x76540132);
mt76_wr(dev, MT_DMASHDL_SCHED_SET(1), 0xFEDCBA98);
mt76_set(dev, MT_WFDMA_DUMMY_CR, MT_WFDMA_NEED_REINIT);
}
static int mt792xu_dma_rx_evt_ep4(struct mt792x_dev *dev)
{
if (!mt76_poll(dev, MT_UWFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000))
return -ETIMEDOUT;
mt76_clear(dev, MT_UWFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_RX_DMA_EN);
mt76_set(dev, MT_WFDMA_HOST_CONFIG,
MT_WFDMA_HOST_CONFIG_USB_RXEVT_EP4_EN);
mt76_set(dev, MT_UWFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_RX_DMA_EN);
return 0;
}
static void mt792xu_epctl_rst_opt(struct mt792x_dev *dev, bool reset)
{
u32 val;
/* usb endpoint reset opt
* bits[4,9]: out blk ep 4-9
* bits[20,21]: in blk ep 4-5
* bits[22]: in int ep 6
*/
val = mt792xu_uhw_rr(&dev->mt76, MT_SSUSB_EPCTL_CSR_EP_RST_OPT);
if (reset)
val |= GENMASK(9, 4) | GENMASK(22, 20);
else
val &= ~(GENMASK(9, 4) | GENMASK(22, 20));
mt792xu_uhw_wr(&dev->mt76, MT_SSUSB_EPCTL_CSR_EP_RST_OPT, val);
}
int mt792xu_dma_init(struct mt792x_dev *dev, bool resume)
{
int err;
mt792xu_wfdma_init(dev);
mt76_clear(dev, MT_UDMA_WLCFG_0, MT_WL_RX_FLUSH);
mt76_set(dev, MT_UDMA_WLCFG_0,
MT_WL_RX_EN | MT_WL_TX_EN |
MT_WL_RX_MPSZ_PAD0 | MT_TICK_1US_EN);
mt76_clear(dev, MT_UDMA_WLCFG_0,
MT_WL_RX_AGG_TO | MT_WL_RX_AGG_LMT);
mt76_clear(dev, MT_UDMA_WLCFG_1, MT_WL_RX_AGG_PKT_LMT);
if (resume)
return 0;
err = mt792xu_dma_rx_evt_ep4(dev);
if (err)
return err;
mt792xu_epctl_rst_opt(dev, false);
return 0;
}
EXPORT_SYMBOL_GPL(mt792xu_dma_init);
int mt792xu_wfsys_reset(struct mt792x_dev *dev)
{
u32 val;
int i;
mt792xu_epctl_rst_opt(dev, false);
val = mt792xu_uhw_rr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST);
val |= MT_CBTOP_RGU_WF_SUBSYS_RST_WF_WHOLE_PATH;
mt792xu_uhw_wr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST, val);
usleep_range(10, 20);
val = mt792xu_uhw_rr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST);
val &= ~MT_CBTOP_RGU_WF_SUBSYS_RST_WF_WHOLE_PATH;
mt792xu_uhw_wr(&dev->mt76, MT_CBTOP_RGU_WF_SUBSYS_RST, val);
mt792xu_uhw_wr(&dev->mt76, MT_UDMA_CONN_INFRA_STATUS_SEL, 0);
for (i = 0; i < MT792x_WFSYS_INIT_RETRY_COUNT; i++) {
val = mt792xu_uhw_rr(&dev->mt76, MT_UDMA_CONN_INFRA_STATUS);
if (val & MT_UDMA_CONN_WFSYS_INIT_DONE)
break;
msleep(100);
}
if (i == MT792x_WFSYS_INIT_RETRY_COUNT)
return -ETIMEDOUT;
return 0;
}
EXPORT_SYMBOL_GPL(mt792xu_wfsys_reset);
int mt792xu_init_reset(struct mt792x_dev *dev)
{
set_bit(MT76_RESET, &dev->mphy.state);
wake_up(&dev->mt76.mcu.wait);
skb_queue_purge(&dev->mt76.mcu.res_q);
mt76u_stop_rx(&dev->mt76);
mt76u_stop_tx(&dev->mt76);
mt792xu_wfsys_reset(dev);
clear_bit(MT76_RESET, &dev->mphy.state);
return mt76u_resume_rx(&dev->mt76);
}
EXPORT_SYMBOL_GPL(mt792xu_init_reset);
void mt792xu_stop(struct ieee80211_hw *hw, bool suspend)
{
struct mt792x_dev *dev = mt792x_hw_dev(hw);
mt76u_stop_tx(&dev->mt76);
mt792x_stop(hw, false);
}
EXPORT_SYMBOL_GPL(mt792xu_stop);
void mt792xu_disconnect(struct usb_interface *usb_intf)
{
struct mt792x_dev *dev = usb_get_intfdata(usb_intf);
cancel_work_sync(&dev->init_work);
if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
return;
mt76_unregister_device(&dev->mt76);
mt792xu_cleanup(dev);
usb_set_intfdata(usb_intf, NULL);
usb_put_dev(interface_to_usbdev(usb_intf));
mt76_free_device(&dev->mt76);
}
EXPORT_SYMBOL_GPL(mt792xu_disconnect);
MODULE_DESCRIPTION("MediaTek MT792x USB helpers");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Lorenzo Bianconi <[email protected]>");