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mt76: introduce mt76_sdio module
Introduce mt76_sdio module as common layer to add mt7663s support Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
parent
90520afbae
commit
d39b52e31a
6 changed files with 408 additions and 2 deletions
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@ -12,6 +12,10 @@ config MT76_USB
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tristate
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depends on MT76_CORE
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config MT76_SDIO
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tristate
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depends on MT76_CORE
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config MT76x02_LIB
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tristate
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select MT76_CORE
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@ -1,6 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0-only
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obj-$(CONFIG_MT76_CORE) += mt76.o
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obj-$(CONFIG_MT76_USB) += mt76-usb.o
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obj-$(CONFIG_MT76_SDIO) += mt76-sdio.o
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obj-$(CONFIG_MT76x02_LIB) += mt76x02-lib.o
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obj-$(CONFIG_MT76x02_USB) += mt76x02-usb.o
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@ -12,6 +13,7 @@ mt76-$(CONFIG_PCI) += pci.o
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mt76-$(CONFIG_NL80211_TESTMODE) += testmode.o
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mt76-usb-y := usb.o usb_trace.o
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mt76-sdio-y := sdio.o
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CFLAGS_trace.o := -I$(src)
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CFLAGS_usb_trace.o := -I$(src)
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@ -305,7 +305,11 @@ mt76_phy_init(struct mt76_dev *dev, struct ieee80211_hw *hw)
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ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
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ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
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ieee80211_hw_set(hw, TX_AMSDU);
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ieee80211_hw_set(hw, TX_FRAG_LIST);
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/* TODO: avoid linearization for SDIO */
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if (!mt76_is_sdio(dev))
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ieee80211_hw_set(hw, TX_FRAG_LIST);
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ieee80211_hw_set(hw, MFP_CAPABLE);
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ieee80211_hw_set(hw, AP_LINK_PS);
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ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
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@ -34,6 +34,7 @@ struct mt76_reg_pair {
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enum mt76_bus_type {
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MT76_BUS_MMIO,
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MT76_BUS_USB,
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MT76_BUS_SDIO,
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};
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struct mt76_bus_ops {
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@ -53,6 +54,7 @@ struct mt76_bus_ops {
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#define mt76_is_usb(dev) ((dev)->bus->type == MT76_BUS_USB)
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#define mt76_is_mmio(dev) ((dev)->bus->type == MT76_BUS_MMIO)
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#define mt76_is_sdio(dev) ((dev)->bus->type == MT76_BUS_SDIO)
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enum mt76_txq_id {
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MT_TXQ_VO = IEEE80211_AC_VO,
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@ -95,6 +97,7 @@ struct mt76_queue_entry {
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union {
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struct mt76_txwi_cache *txwi;
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struct urb *urb;
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int buf_sz;
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};
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enum mt76_txq_id qid;
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bool skip_buf0:1;
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@ -147,6 +150,8 @@ struct mt76_mcu_ops {
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int len, bool wait_resp);
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int (*mcu_skb_send_msg)(struct mt76_dev *dev, struct sk_buff *skb,
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int cmd, bool wait_resp);
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u32 (*mcu_rr)(struct mt76_dev *dev, u32 offset);
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void (*mcu_wr)(struct mt76_dev *dev, u32 offset, u32 val);
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int (*mcu_wr_rp)(struct mt76_dev *dev, u32 base,
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const struct mt76_reg_pair *rp, int len);
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int (*mcu_rd_rp)(struct mt76_dev *dev, u32 base,
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@ -440,6 +445,24 @@ struct mt76_usb {
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} mcu;
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};
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struct mt76_sdio {
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struct task_struct *tx_kthread;
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struct task_struct *kthread;
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struct work_struct stat_work;
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unsigned long state;
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struct sdio_func *func;
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struct {
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struct mutex lock;
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int pse_data_quota;
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int ple_data_quota;
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int pse_mcu_quota;
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int deficit;
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} sched;
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};
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struct mt76_mmio {
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void __iomem *regs;
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spinlock_t irq_lock;
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@ -626,6 +649,7 @@ struct mt76_dev {
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union {
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struct mt76_mmio mmio;
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struct mt76_usb usb;
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struct mt76_sdio sdio;
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};
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};
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@ -1030,6 +1054,12 @@ void mt76u_stop_rx(struct mt76_dev *dev);
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int mt76u_resume_rx(struct mt76_dev *dev);
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void mt76u_queues_deinit(struct mt76_dev *dev);
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int mt76s_init(struct mt76_dev *dev, struct sdio_func *func,
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const struct mt76_bus_ops *bus_ops);
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int mt76s_alloc_queues(struct mt76_dev *dev);
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void mt76s_stop_txrx(struct mt76_dev *dev);
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void mt76s_deinit(struct mt76_dev *dev);
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struct sk_buff *
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mt76_mcu_msg_alloc(struct mt76_dev *dev, const void *data,
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int data_len);
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@ -359,7 +359,10 @@ int mt7663_usb_sdio_register_device(struct mt7615_dev *dev)
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return err;
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/* check hw sg support in order to enable AMSDU */
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hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1;
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if (dev->mt76.usb.sg_en || mt76_is_sdio(&dev->mt76))
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hw->max_tx_fragments = MT_HW_TXP_MAX_BUF_NUM;
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else
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hw->max_tx_fragments = 1;
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hw->extra_tx_headroom += MT_USB_TXD_SIZE;
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if (mt76_is_usb(&dev->mt76))
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hw->extra_tx_headroom += MT_USB_HDR_SIZE;
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363
drivers/net/wireless/mediatek/mt76/sdio.c
Normal file
363
drivers/net/wireless/mediatek/mt76/sdio.c
Normal file
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@ -0,0 +1,363 @@
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// SPDX-License-Identifier: ISC
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/* Copyright (C) 2020 MediaTek Inc.
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*
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* This file is written based on mt76/usb.c.
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*
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* Author: Felix Fietkau <nbd@nbd.name>
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* Lorenzo Bianconi <lorenzo@kernel.org>
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* Sean Wang <sean.wang@mediatek.com>
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*/
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#include <linux/iopoll.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mmc/sdio_func.h>
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#include <linux/sched.h>
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#include <linux/kthread.h>
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#include "mt76.h"
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static int
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mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid)
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{
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struct mt76_queue *q = &dev->q_rx[qid];
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spin_lock_init(&q->lock);
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q->entry = devm_kcalloc(dev->dev,
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MT_NUM_RX_ENTRIES, sizeof(*q->entry),
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GFP_KERNEL);
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if (!q->entry)
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return -ENOMEM;
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q->ndesc = MT_NUM_RX_ENTRIES;
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q->head = q->tail = 0;
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q->queued = 0;
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return 0;
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}
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static int mt76s_alloc_tx(struct mt76_dev *dev)
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{
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struct mt76_queue *q;
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int i;
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for (i = 0; i < MT_TXQ_MCU_WA; i++) {
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INIT_LIST_HEAD(&dev->q_tx[i].swq);
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q = devm_kzalloc(dev->dev, sizeof(*q), GFP_KERNEL);
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if (!q)
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return -ENOMEM;
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spin_lock_init(&q->lock);
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q->hw_idx = i;
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dev->q_tx[i].q = q;
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q->entry = devm_kcalloc(dev->dev,
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MT_NUM_TX_ENTRIES, sizeof(*q->entry),
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GFP_KERNEL);
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if (!q->entry)
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return -ENOMEM;
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q->ndesc = MT_NUM_TX_ENTRIES;
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}
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return 0;
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}
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void mt76s_stop_txrx(struct mt76_dev *dev)
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{
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struct mt76_sdio *sdio = &dev->sdio;
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cancel_work_sync(&sdio->stat_work);
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clear_bit(MT76_READING_STATS, &dev->phy.state);
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mt76_tx_status_check(dev, NULL, true);
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}
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EXPORT_SYMBOL_GPL(mt76s_stop_txrx);
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int mt76s_alloc_queues(struct mt76_dev *dev)
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{
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int err;
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err = mt76s_alloc_rx_queue(dev, MT_RXQ_MAIN);
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if (err < 0)
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return err;
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return mt76s_alloc_tx(dev);
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}
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EXPORT_SYMBOL_GPL(mt76s_alloc_queues);
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static struct mt76_queue_entry *
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mt76s_get_next_rx_entry(struct mt76_queue *q)
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{
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struct mt76_queue_entry *e = NULL;
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spin_lock_bh(&q->lock);
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if (q->queued > 0) {
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e = &q->entry[q->head];
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q->head = (q->head + 1) % q->ndesc;
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q->queued--;
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}
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spin_unlock_bh(&q->lock);
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return e;
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}
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static int
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mt76s_process_rx_queue(struct mt76_dev *dev, struct mt76_queue *q)
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{
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int qid = q - &dev->q_rx[MT_RXQ_MAIN];
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int nframes = 0;
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while (true) {
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struct mt76_queue_entry *e;
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if (!test_bit(MT76_STATE_INITIALIZED, &dev->phy.state))
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break;
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e = mt76s_get_next_rx_entry(q);
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if (!e || !e->skb)
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break;
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dev->drv->rx_skb(dev, MT_RXQ_MAIN, e->skb);
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e->skb = NULL;
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nframes++;
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}
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if (qid == MT_RXQ_MAIN)
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mt76_rx_poll_complete(dev, MT_RXQ_MAIN, NULL);
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return nframes;
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}
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static int mt76s_process_tx_queue(struct mt76_dev *dev, enum mt76_txq_id qid)
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{
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struct mt76_sw_queue *sq = &dev->q_tx[qid];
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u32 n_dequeued = 0, n_sw_dequeued = 0;
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struct mt76_queue_entry entry;
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struct mt76_queue *q = sq->q;
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bool wake;
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while (q->queued > n_dequeued) {
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if (q->entry[q->head].schedule) {
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q->entry[q->head].schedule = false;
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n_sw_dequeued++;
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}
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entry = q->entry[q->head];
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q->entry[q->head].done = false;
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q->head = (q->head + 1) % q->ndesc;
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n_dequeued++;
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if (qid == MT_TXQ_MCU)
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dev_kfree_skb(entry.skb);
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else
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dev->drv->tx_complete_skb(dev, qid, &entry);
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}
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spin_lock_bh(&q->lock);
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sq->swq_queued -= n_sw_dequeued;
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q->queued -= n_dequeued;
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wake = q->stopped && q->queued < q->ndesc - 8;
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if (wake)
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q->stopped = false;
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if (!q->queued)
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wake_up(&dev->tx_wait);
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spin_unlock_bh(&q->lock);
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if (qid == MT_TXQ_MCU)
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goto out;
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mt76_txq_schedule(&dev->phy, qid);
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if (wake)
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ieee80211_wake_queue(dev->hw, qid);
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wake_up_process(dev->sdio.tx_kthread);
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out:
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return n_dequeued;
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}
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static void mt76s_tx_status_data(struct work_struct *work)
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{
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struct mt76_sdio *sdio;
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struct mt76_dev *dev;
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u8 update = 1;
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u16 count = 0;
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sdio = container_of(work, struct mt76_sdio, stat_work);
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dev = container_of(sdio, struct mt76_dev, sdio);
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while (true) {
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if (test_bit(MT76_REMOVED, &dev->phy.state))
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break;
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if (!dev->drv->tx_status_data(dev, &update))
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break;
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count++;
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}
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if (count && test_bit(MT76_STATE_RUNNING, &dev->phy.state))
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queue_work(dev->wq, &sdio->stat_work);
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else
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clear_bit(MT76_READING_STATS, &dev->phy.state);
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}
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static int
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mt76s_tx_queue_skb(struct mt76_dev *dev, enum mt76_txq_id qid,
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struct sk_buff *skb, struct mt76_wcid *wcid,
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struct ieee80211_sta *sta)
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{
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struct mt76_queue *q = dev->q_tx[qid].q;
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struct mt76_tx_info tx_info = {
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.skb = skb,
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};
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int err, len = skb->len;
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u16 idx = q->tail;
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if (q->queued == q->ndesc)
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return -ENOSPC;
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skb->prev = skb->next = NULL;
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err = dev->drv->tx_prepare_skb(dev, NULL, qid, wcid, sta, &tx_info);
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if (err < 0)
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return err;
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q->entry[q->tail].skb = tx_info.skb;
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q->entry[q->tail].buf_sz = len;
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q->tail = (q->tail + 1) % q->ndesc;
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return idx;
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}
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static int
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mt76s_tx_queue_skb_raw(struct mt76_dev *dev, enum mt76_txq_id qid,
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struct sk_buff *skb, u32 tx_info)
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{
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struct mt76_queue *q = dev->q_tx[qid].q;
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int ret = -ENOSPC, len = skb->len;
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spin_lock_bh(&q->lock);
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if (q->queued == q->ndesc)
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goto out;
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ret = mt76_skb_adjust_pad(skb);
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if (ret)
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goto out;
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q->entry[q->tail].buf_sz = len;
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q->entry[q->tail].skb = skb;
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q->tail = (q->tail + 1) % q->ndesc;
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out:
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spin_unlock_bh(&q->lock);
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return ret;
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}
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static void mt76s_tx_kick(struct mt76_dev *dev, struct mt76_queue *q)
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{
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struct mt76_sdio *sdio = &dev->sdio;
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wake_up_process(sdio->tx_kthread);
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}
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static const struct mt76_queue_ops sdio_queue_ops = {
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.tx_queue_skb = mt76s_tx_queue_skb,
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.kick = mt76s_tx_kick,
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.tx_queue_skb_raw = mt76s_tx_queue_skb_raw,
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};
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static int mt76s_kthread_run(void *data)
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{
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struct mt76_dev *dev = data;
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struct mt76_phy *mphy = &dev->phy;
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while (!kthread_should_stop()) {
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int i, nframes = 0;
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cond_resched();
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/* rx processing */
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local_bh_disable();
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rcu_read_lock();
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mt76_for_each_q_rx(dev, i)
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nframes += mt76s_process_rx_queue(dev, &dev->q_rx[i]);
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rcu_read_unlock();
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local_bh_enable();
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/* tx processing */
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for (i = 0; i < MT_TXQ_MCU_WA; i++)
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nframes += mt76s_process_tx_queue(dev, i);
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if (dev->drv->tx_status_data &&
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!test_and_set_bit(MT76_READING_STATS, &mphy->state))
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queue_work(dev->wq, &dev->sdio.stat_work);
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if (!nframes || !test_bit(MT76_STATE_RUNNING, &mphy->state)) {
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set_current_state(TASK_INTERRUPTIBLE);
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schedule();
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}
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}
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return 0;
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}
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void mt76s_deinit(struct mt76_dev *dev)
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{
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struct mt76_sdio *sdio = &dev->sdio;
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int i;
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kthread_stop(sdio->kthread);
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kthread_stop(sdio->tx_kthread);
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mt76s_stop_txrx(dev);
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sdio_claim_host(sdio->func);
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sdio_release_irq(sdio->func);
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sdio_release_host(sdio->func);
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|
||||
mt76_for_each_q_rx(dev, i) {
|
||||
struct mt76_queue *q = &dev->q_rx[i];
|
||||
int j;
|
||||
|
||||
for (j = 0; j < q->ndesc; j++) {
|
||||
struct mt76_queue_entry *e = &q->entry[j];
|
||||
|
||||
if (!e->skb)
|
||||
continue;
|
||||
|
||||
dev_kfree_skb(e->skb);
|
||||
e->skb = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(mt76s_deinit);
|
||||
|
||||
int mt76s_init(struct mt76_dev *dev, struct sdio_func *func,
|
||||
const struct mt76_bus_ops *bus_ops)
|
||||
{
|
||||
struct mt76_sdio *sdio = &dev->sdio;
|
||||
|
||||
sdio->kthread = kthread_create(mt76s_kthread_run, dev, "mt76s");
|
||||
if (IS_ERR(sdio->kthread))
|
||||
return PTR_ERR(sdio->kthread);
|
||||
|
||||
INIT_WORK(&sdio->stat_work, mt76s_tx_status_data);
|
||||
|
||||
mutex_init(&sdio->sched.lock);
|
||||
dev->queue_ops = &sdio_queue_ops;
|
||||
dev->bus = bus_ops;
|
||||
dev->sdio.func = func;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(mt76s_init);
|
||||
|
||||
MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
|
||||
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
|
||||
MODULE_LICENSE("Dual BSD/GPL");
|
Loading…
Reference in a new issue