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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2020 MediaTek Inc.
*
* Author: Felix Fietkau <nbd@nbd.name>
* Lorenzo Bianconi <lorenzo@kernel.org>
* Sean Wang <sean.wang@mediatek.com>
*/
#include <linux/kernel.h>
#include <linux/mmc/sdio_func.h>
#include <linux/module.h>
#include <linux/iopoll.h>
#include "mt7615.h"
#include "mac.h"
#include "mcu.h"
#include "regs.h"
#include "sdio.h"
static int mt7663s_mcu_init_sched(struct mt7615_dev *dev)
{
struct mt76_sdio *sdio = &dev->mt76.sdio;
u32 pse0, ple, pse1, txdwcnt;
pse0 = mt76_get_field(dev, MT_PSE_PG_HIF0_GROUP, MT_HIF0_MIN_QUOTA);
pse1 = mt76_get_field(dev, MT_PSE_PG_HIF1_GROUP, MT_HIF1_MIN_QUOTA);
ple = mt76_get_field(dev, MT_PLE_PG_HIF0_GROUP, MT_HIF0_MIN_QUOTA);
txdwcnt = mt76_get_field(dev, MT_PP_TXDWCNT,
MT_PP_TXDWCNT_TX1_ADD_DW_CNT);
mutex_lock(&sdio->sched.lock);
sdio->sched.pse_data_quota = pse0;
sdio->sched.ple_data_quota = ple;
sdio->sched.pse_mcu_quota = pse1;
sdio->sched.deficit = txdwcnt << 2;
mutex_unlock(&sdio->sched.lock);
return 0;
}
static int
mt7663s_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
int cmd, bool wait_resp)
{
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
int ret, seq;
mutex_lock(&mdev->mcu.mutex);
mt7615_mcu_fill_msg(dev, skb, cmd, &seq);
ret = mt76_tx_queue_skb_raw(dev, MT_TXQ_MCU, skb, 0);
if (ret)
goto out;
mt76_queue_kick(dev, mdev->q_tx[MT_TXQ_MCU]);
if (wait_resp)
ret = mt7615_mcu_wait_response(dev, cmd, seq);
out:
mutex_unlock(&mdev->mcu.mutex);
return ret;
}
static int mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
{
struct sdio_func *func = dev->mt76.sdio.func;
struct mt76_phy *mphy = &dev->mt76.phy;
u32 status;
int ret;
if (!test_and_clear_bit(MT76_STATE_PM, &mphy->state))
goto out;
sdio_claim_host(func);
sdio_writel(func, WHLPCR_FW_OWN_REQ_CLR, MCR_WHLPCR, NULL);
ret = readx_poll_timeout(mt7663s_read_pcr, dev, status,
status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
if (ret < 0) {
dev_err(dev->mt76.dev, "Cannot get ownership from device");
set_bit(MT76_STATE_PM, &mphy->state);
sdio_release_host(func);
return ret;
}
sdio_release_host(func);
out:
dev->pm.last_activity = jiffies;
return 0;
}
static int mt7663s_mcu_fw_pmctrl(struct mt7615_dev *dev)
{
struct sdio_func *func = dev->mt76.sdio.func;
struct mt76_phy *mphy = &dev->mt76.phy;
u32 status;
int ret;
if (test_and_set_bit(MT76_STATE_PM, &mphy->state))
return 0;
sdio_claim_host(func);
sdio_writel(func, WHLPCR_FW_OWN_REQ_SET, MCR_WHLPCR, NULL);
ret = readx_poll_timeout(mt7663s_read_pcr, dev, status,
!(status & WHLPCR_IS_DRIVER_OWN), 2000, 1000000);
if (ret < 0) {
dev_err(dev->mt76.dev, "Cannot set ownership to device");
clear_bit(MT76_STATE_PM, &mphy->state);
}
sdio_release_host(func);
return ret;
}
int mt7663s_mcu_init(struct mt7615_dev *dev)
{
static const struct mt76_mcu_ops mt7663s_mcu_ops = {
.headroom = sizeof(struct mt7615_mcu_txd),
.tailroom = MT_USB_TAIL_SIZE,
.mcu_skb_send_msg = mt7663s_mcu_send_message,
.mcu_send_msg = mt7615_mcu_msg_send,
.mcu_parse_response = mt7615_mcu_parse_response,
.mcu_restart = mt7615_mcu_restart,
.mcu_rr = mt7615_mcu_reg_rr,
.mcu_wr = mt7615_mcu_reg_wr,
};
struct mt7615_mcu_ops *mcu_ops;
int ret;
ret = mt7663s_mcu_drv_pmctrl(dev);
if (ret)
return ret;
dev->mt76.mcu_ops = &mt7663s_mcu_ops,
ret = mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY);
if (ret) {
mt7615_mcu_restart(&dev->mt76);
if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,
MT_TOP_MISC2_FW_N9_RDY, 0, 500))
return -EIO;
}
ret = __mt7663_load_firmware(dev);
if (ret)
return ret;
mcu_ops = devm_kmemdup(dev->mt76.dev, dev->mcu_ops, sizeof(*mcu_ops),
GFP_KERNEL);
if (!mcu_ops)
return -ENOMEM;
mcu_ops->set_drv_ctrl = mt7663s_mcu_drv_pmctrl;
mcu_ops->set_fw_ctrl = mt7663s_mcu_fw_pmctrl;
dev->mcu_ops = mcu_ops;
ret = mt7663s_mcu_init_sched(dev);
if (ret)
return ret;
set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
return 0;
}
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