1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2020 MediaTek Inc.
3 *
4 * Author: Felix Fietkau <nbd@nbd.name>
5 * Lorenzo Bianconi <lorenzo@kernel.org>
6 * Sean Wang <sean.wang@mediatek.com>
7 */
8 #include <linux/kernel.h>
9 #include <linux/mmc/sdio_func.h>
10 #include <linux/module.h>
11 #include <linux/iopoll.h>
12
13 #include "../sdio.h"
14 #include "mt7615.h"
15 #include "mac.h"
16 #include "mcu.h"
17 #include "regs.h"
18
mt7663s_mcu_init_sched(struct mt7615_dev * dev)19 static int mt7663s_mcu_init_sched(struct mt7615_dev *dev)
20 {
21 struct mt76_sdio *sdio = &dev->mt76.sdio;
22 u32 txdwcnt;
23
24 sdio->sched.pse_data_quota = mt76_get_field(dev, MT_PSE_PG_HIF0_GROUP,
25 MT_HIF0_MIN_QUOTA);
26 sdio->sched.pse_mcu_quota = mt76_get_field(dev, MT_PSE_PG_HIF1_GROUP,
27 MT_HIF1_MIN_QUOTA);
28 sdio->sched.ple_data_quota = mt76_get_field(dev, MT_PLE_PG_HIF0_GROUP,
29 MT_HIF0_MIN_QUOTA);
30 sdio->sched.pse_page_size = MT_PSE_PAGE_SZ;
31 txdwcnt = mt76_get_field(dev, MT_PP_TXDWCNT,
32 MT_PP_TXDWCNT_TX1_ADD_DW_CNT);
33 sdio->sched.deficit = txdwcnt << 2;
34
35 return 0;
36 }
37
38 static int
mt7663s_mcu_send_message(struct mt76_dev * mdev,struct sk_buff * skb,int cmd,int * seq)39 mt7663s_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
40 int cmd, int *seq)
41 {
42 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
43 int ret;
44
45 mt7615_mcu_fill_msg(dev, skb, cmd, seq);
46 ret = mt76_tx_queue_skb_raw(dev, mdev->q_mcu[MT_MCUQ_WM], skb, 0);
47 if (ret)
48 return ret;
49
50 mt76_queue_kick(dev, mdev->q_mcu[MT_MCUQ_WM]);
51
52 return ret;
53 }
54
__mt7663s_mcu_drv_pmctrl(struct mt7615_dev * dev)55 static int __mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
56 {
57 struct sdio_func *func = dev->mt76.sdio.func;
58 struct mt76_phy *mphy = &dev->mt76.phy;
59 struct mt76_connac_pm *pm = &dev->pm;
60 u32 status;
61 int ret;
62
63 sdio_claim_host(func);
64
65 sdio_writel(func, WHLPCR_FW_OWN_REQ_CLR, MCR_WHLPCR, NULL);
66
67 ret = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
68 status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
69 if (ret < 0) {
70 dev_err(dev->mt76.dev, "Cannot get ownership from device");
71 } else {
72 clear_bit(MT76_STATE_PM, &mphy->state);
73
74 pm->stats.last_wake_event = jiffies;
75 pm->stats.doze_time += pm->stats.last_wake_event -
76 pm->stats.last_doze_event;
77 }
78 sdio_release_host(func);
79
80 return ret;
81 }
82
mt7663s_mcu_drv_pmctrl(struct mt7615_dev * dev)83 static int mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
84 {
85 struct mt76_phy *mphy = &dev->mt76.phy;
86 int ret = 0;
87
88 mutex_lock(&dev->pm.mutex);
89
90 if (test_bit(MT76_STATE_PM, &mphy->state))
91 ret = __mt7663s_mcu_drv_pmctrl(dev);
92
93 mutex_unlock(&dev->pm.mutex);
94
95 return ret;
96 }
97
mt7663s_mcu_fw_pmctrl(struct mt7615_dev * dev)98 static int mt7663s_mcu_fw_pmctrl(struct mt7615_dev *dev)
99 {
100 struct sdio_func *func = dev->mt76.sdio.func;
101 struct mt76_phy *mphy = &dev->mt76.phy;
102 struct mt76_connac_pm *pm = &dev->pm;
103 int ret = 0;
104 u32 status;
105
106 mutex_lock(&pm->mutex);
107
108 if (mt76_connac_skip_fw_pmctrl(mphy, pm))
109 goto out;
110
111 sdio_claim_host(func);
112
113 sdio_writel(func, WHLPCR_FW_OWN_REQ_SET, MCR_WHLPCR, NULL);
114
115 ret = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
116 !(status & WHLPCR_IS_DRIVER_OWN), 2000, 1000000);
117 if (ret < 0) {
118 dev_err(dev->mt76.dev, "Cannot set ownership to device");
119 clear_bit(MT76_STATE_PM, &mphy->state);
120 } else {
121 pm->stats.last_doze_event = jiffies;
122 pm->stats.awake_time += pm->stats.last_doze_event -
123 pm->stats.last_wake_event;
124 }
125
126 sdio_release_host(func);
127 out:
128 mutex_unlock(&pm->mutex);
129
130 return ret;
131 }
132
mt7663s_mcu_init(struct mt7615_dev * dev)133 int mt7663s_mcu_init(struct mt7615_dev *dev)
134 {
135 static const struct mt76_mcu_ops mt7663s_mcu_ops = {
136 .headroom = sizeof(struct mt7615_mcu_txd),
137 .tailroom = MT_USB_TAIL_SIZE,
138 .mcu_skb_send_msg = mt7663s_mcu_send_message,
139 .mcu_parse_response = mt7615_mcu_parse_response,
140 .mcu_rr = mt76_connac_mcu_reg_rr,
141 .mcu_wr = mt76_connac_mcu_reg_wr,
142 };
143 struct mt7615_mcu_ops *mcu_ops;
144 int ret;
145
146 ret = __mt7663s_mcu_drv_pmctrl(dev);
147 if (ret)
148 return ret;
149
150 dev->mt76.mcu_ops = &mt7663s_mcu_ops,
151
152 ret = mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY);
153 if (ret) {
154 mt7615_mcu_restart(&dev->mt76);
155 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,
156 MT_TOP_MISC2_FW_N9_RDY, 0, 500))
157 return -EIO;
158 }
159
160 ret = __mt7663_load_firmware(dev);
161 if (ret)
162 return ret;
163
164 mcu_ops = devm_kmemdup(dev->mt76.dev, dev->mcu_ops, sizeof(*mcu_ops),
165 GFP_KERNEL);
166 if (!mcu_ops)
167 return -ENOMEM;
168
169 mcu_ops->set_drv_ctrl = mt7663s_mcu_drv_pmctrl;
170 mcu_ops->set_fw_ctrl = mt7663s_mcu_fw_pmctrl;
171 dev->mcu_ops = mcu_ops;
172
173 ret = mt7663s_mcu_init_sched(dev);
174 if (ret)
175 return ret;
176
177 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
178
179 return 0;
180 }
181