developer | b11a539 | 2022-03-31 00:34:47 +0800 | [diff] [blame] | 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 | |
| 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 |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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_restart = mt7615_mcu_restart, |
| 141 | .mcu_rr = mt76_connac_mcu_reg_rr, |
| 142 | .mcu_wr = mt76_connac_mcu_reg_wr, |
| 143 | }; |
| 144 | struct mt7615_mcu_ops *mcu_ops; |
| 145 | int ret; |
| 146 | |
| 147 | ret = __mt7663s_mcu_drv_pmctrl(dev); |
| 148 | if (ret) |
| 149 | return ret; |
| 150 | |
| 151 | dev->mt76.mcu_ops = &mt7663s_mcu_ops, |
| 152 | |
| 153 | ret = mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY); |
| 154 | if (ret) { |
| 155 | mt7615_mcu_restart(&dev->mt76); |
| 156 | if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, |
| 157 | MT_TOP_MISC2_FW_N9_RDY, 0, 500)) |
| 158 | return -EIO; |
| 159 | } |
| 160 | |
| 161 | ret = __mt7663_load_firmware(dev); |
| 162 | if (ret) |
| 163 | return ret; |
| 164 | |
| 165 | mcu_ops = devm_kmemdup(dev->mt76.dev, dev->mcu_ops, sizeof(*mcu_ops), |
| 166 | GFP_KERNEL); |
| 167 | if (!mcu_ops) |
| 168 | return -ENOMEM; |
| 169 | |
| 170 | mcu_ops->set_drv_ctrl = mt7663s_mcu_drv_pmctrl; |
| 171 | mcu_ops->set_fw_ctrl = mt7663s_mcu_fw_pmctrl; |
| 172 | dev->mcu_ops = mcu_ops; |
| 173 | |
| 174 | ret = mt7663s_mcu_init_sched(dev); |
| 175 | if (ret) |
| 176 | return ret; |
| 177 | |
| 178 | set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); |
| 179 | |
| 180 | return 0; |
| 181 | } |