mirror of
https://github.com/outbackdingo/mt76.git
synced 2026-10-24 13:26:48 +00:00
add a preliminary port of the dma code for mt7603
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
@@ -15,4 +15,4 @@ mt76x2e-$(CONFIG_OF) += mt76x2_of.o
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mt7603e-y := \
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mt7603_pci.o mt7603_main.o mt7603_init.o mt7603_mcu.o \
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mt7603_core.o
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mt7603_core.o mt7603_dma.o
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@@ -13,6 +13,8 @@
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#ifndef __MT76_DMA_H
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#define __MT76_DMA_H
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#define MT_RING_SIZE 0x10
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#define MT_DMA_CTL_SD_LEN1 GENMASK(13, 0)
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#define MT_DMA_CTL_LAST_SEC1 BIT(14)
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#define MT_DMA_CTL_BURST BIT(15)
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@@ -21,6 +21,11 @@
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#include <net/mac80211.h>
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#include "util.h"
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#define MT_RX_RING_SIZE 128
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#define MT_TX_RING_SIZE 128
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#define MT_MCU_RING_SIZE 32
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#define MT_RX_BUF_SIZE 2048
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struct mt76_dev;
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struct mt76_bus_ops {
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@@ -14,24 +14,58 @@
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#ifndef __MT7603_H
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#define __MT7603_H
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#include <linux/device.h>
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#include "mt76.h"
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#include "mt7603_regs.h"
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#define MT7603_FIRMWARE_E1 "mt7603_e1.bin"
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#define MT7603_FIRMWARE_E2 "mt7603_e2.bin"
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enum mt7603_txq_id {
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MT_TXQ_VO = IEEE80211_AC_VO,
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MT_TXQ_VI = IEEE80211_AC_VI,
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MT_TXQ_BE = IEEE80211_AC_BE,
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MT_TXQ_BK = IEEE80211_AC_BK,
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MT_TXQ_PSD,
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MT_TXQ_MCU,
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__MT_TXQ_MAX
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};
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struct mt7603_mcu {
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struct mutex mutex;
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wait_queue_head_t wait;
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struct sk_buff_head res_q;
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struct mt76_queue q_rx;
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u32 msg_seq;
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};
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struct mt7603_dev {
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struct mt76_dev mt76;
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u32 rev;
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u32 irqmask;
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spinlock_t irq_lock;
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struct mt7603_mcu mcu;
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struct mt76_queue q_rx;
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struct mt76_queue q_tx[__MT_TXQ_MAX];
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struct net_device napi_dev;
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struct napi_struct napi;
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struct tasklet_struct tx_tasklet;
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struct tasklet_struct rx_tasklet;
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struct tasklet_struct pre_tbtt_tasklet;
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};
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extern const struct ieee80211_ops mt7603_ops;
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struct mt7603_dev *mt7603_alloc_device(struct device *pdev);
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irqreturn_t mt7603_irq_handler(int irq, void *dev_instance);
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int mt7603_init_hardware(struct mt7603_dev *dev);
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int mt7603_dma_init(struct mt7603_dev *dev);
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void mt7603_dma_cleanup(struct mt7603_dev *dev);
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int mt7603_mcu_init(struct mt7603_dev *dev);
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void mt7603_set_irq_mask(struct mt7603_dev *dev, u32 clear, u32 set);
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+311
@@ -0,0 +1,311 @@
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/*
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* Copyright (C) 2014 Felix Fietkau <[email protected]>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "mt7603.h"
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#include "mt7603_dma.h"
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static int
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mt7603_dma_add_rx_buf(struct mt7603_dev *dev, struct mt76_queue *q,
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dma_addr_t addr, int len)
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{
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return mt76_queue_add_buf(dev, q, addr, len, 0, 0, 0);
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}
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static int
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mt7603_dma_rx_fill(struct mt7603_dev *dev, struct mt76_queue *q)
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{
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dma_addr_t addr;
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void *buf;
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int frames = 0;
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int len = SKB_WITH_OVERHEAD(q->buf_size);
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int idx;
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spin_lock_bh(&q->lock);
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while (q->queued < q->ndesc - 1) {
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buf = kzalloc(q->buf_size, GFP_ATOMIC);
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if (!buf)
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break;
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addr = dma_map_single(dev->mt76.dev, buf, len, DMA_FROM_DEVICE);
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if (dma_mapping_error(dev->mt76.dev, addr)) {
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kfree(buf);
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break;
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}
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idx = mt7603_dma_add_rx_buf(dev, q, addr, len);
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q->entry[idx].buf = buf;
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frames++;
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}
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if (frames)
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mt76_queue_kick(dev, q);
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spin_unlock_bh(&q->lock);
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return frames;
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}
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int
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mt7603_tx_queue_mcu(struct mt7603_dev *dev, enum mt7603_txq_id qid,
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struct sk_buff *skb, int cmd, int seq)
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{
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struct mt76_queue *q = &dev->q_tx[qid];
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dma_addr_t addr;
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int idx;
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addr = dma_map_single(dev->mt76.dev, skb->data, skb->len, DMA_TO_DEVICE);
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if (dma_mapping_error(dev->mt76.dev, addr))
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return -ENOMEM;
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spin_lock_bh(&q->lock);
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idx = mt76_queue_add_buf(dev, q, addr, skb->len, 0, 0, 0);
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q->entry[idx].skb = skb;
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mt76_queue_kick(dev, q);
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spin_unlock_bh(&q->lock);
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return 0;
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}
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static void
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mt7603_tx_cleanup_entry(struct mt76_dev *mdev, struct mt76_queue *q,
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struct mt76_queue_entry *e)
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{
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struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
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(void) dev;
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dev_kfree_skb_any(e->skb);
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if (e->schedule)
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q->swq_queued--;
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}
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static void
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mt7603_rx_cleanup(struct mt7603_dev *dev, struct mt76_queue *q)
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{
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void *buf;
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spin_lock_bh(&q->lock);
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do {
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buf = mt76_queue_dequeue(dev, q, true, NULL, NULL);
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if (!buf)
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break;
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kfree(buf);
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} while (1);
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spin_unlock_bh(&q->lock);
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}
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static void
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mt76_tx_cleanup(struct mt7603_dev *dev, struct mt76_queue *q, bool flush)
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{
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spin_lock_bh(&q->lock);
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mt76_queue_cleanup(dev, q, flush, mt7603_tx_cleanup_entry);
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spin_unlock_bh(&q->lock);
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}
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static int
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mt7603_init_tx_queue(struct mt7603_dev *dev, struct mt76_queue *q,
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int idx, int n_desc, bool mcu)
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{
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int ret;
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q->regs = dev->mt76.regs + MT_TX_RING_BASE + idx * MT_RING_SIZE;
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q->ndesc = n_desc;
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ret = mt76_queue_alloc(dev, q);
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if (ret)
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return ret;
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mt7603_irq_enable(dev, MT_INT_TX_DONE(idx));
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return 0;
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}
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static void
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mt7603_process_rx_skb(struct mt7603_dev *dev, struct mt76_queue *q,
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struct sk_buff *skb, u32 info)
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{
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if (q == &dev->mcu.q_rx) {
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u32 *rxfce;
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rxfce = (u32 *) skb->cb;
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*rxfce = info;
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skb_queue_tail(&dev->mcu.res_q, skb);
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wake_up(&dev->mcu.wait);
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return;
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}
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dev_kfree_skb(skb);
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}
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static int
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mt7603_process_rx_queue(struct mt7603_dev *dev, struct mt76_queue *q, int budget)
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{
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struct sk_buff *skb;
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unsigned char *data;
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int len;
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int done = 0;
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while (done < budget) {
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u32 info;
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data = mt76_queue_dequeue(dev, q, false, &len, &info);
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if (!data)
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break;
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skb = build_skb(data, 0);
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if (!skb) {
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kfree(data);
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continue;
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}
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if (skb->tail + len > skb->end) {
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dev_kfree_skb(skb);
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continue;
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}
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__skb_put(skb, len);
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mt7603_process_rx_skb(dev, q, skb, info);
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done++;
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}
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mt7603_dma_rx_fill(dev, q);
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return done;
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}
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static int
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mt7603_init_rx_queue(struct mt7603_dev *dev, struct mt76_queue *q,
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int idx, int n_desc, int bufsize)
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{
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int ret;
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q->regs = dev->mt76.regs + MT_RX_RING_BASE + idx * MT_RING_SIZE;
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q->ndesc = n_desc;
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q->buf_size = bufsize;
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ret = mt76_queue_alloc(dev, q);
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if (ret)
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return ret;
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mt7603_irq_enable(dev, MT_INT_RX_DONE(idx));
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return 0;
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}
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static void
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mt7603_tx_tasklet(unsigned long data)
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{
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struct mt7603_dev *dev = (struct mt7603_dev *) data;
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int i;
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for (i = ARRAY_SIZE(dev->q_tx) - 1; i >= 0; i--)
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mt76_tx_cleanup(dev, &dev->q_tx[i], false);
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mt7603_irq_enable(dev, MT_INT_TX_DONE_ALL);
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}
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static int
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mt7603_dma_rx_poll(struct napi_struct *napi, int budget)
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{
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struct mt7603_dev *dev = container_of(napi, struct mt7603_dev, napi);
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int done;
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done = mt7603_process_rx_queue(dev, &dev->q_rx, budget);
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if (done < budget) {
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napi_complete(napi);
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mt7603_irq_enable(dev, MT_INT_RX_DONE(0));
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}
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return done;
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}
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static void
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mt7603_rx_tasklet(unsigned long data)
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{
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struct mt7603_dev *dev = (struct mt7603_dev *) data;
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mt7603_process_rx_queue(dev, &dev->mcu.q_rx, dev->mcu.q_rx.ndesc);
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mt7603_irq_enable(dev, MT_INT_RX_DONE(1));
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}
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int mt7603_dma_init(struct mt7603_dev *dev)
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{
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static const u8 wmm_queue_map[] = {
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[IEEE80211_AC_BE] = 0,
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[IEEE80211_AC_BK] = 1,
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[IEEE80211_AC_VI] = 2,
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[IEEE80211_AC_VO] = 3,
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};
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int ret;
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int i;
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mt76_dma_init(&dev->mt76);
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init_waitqueue_head(&dev->mcu.wait);
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skb_queue_head_init(&dev->mcu.res_q);
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init_dummy_netdev(&dev->napi_dev);
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netif_napi_add(&dev->napi_dev, &dev->napi, mt7603_dma_rx_poll, 64);
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tasklet_init(&dev->tx_tasklet, mt7603_tx_tasklet, (unsigned long) dev);
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tasklet_init(&dev->rx_tasklet, mt7603_rx_tasklet, (unsigned long) dev);
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mt76_wr(dev, MT_WPDMA_RST_IDX, ~0);
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for (i = 0; i < ARRAY_SIZE(wmm_queue_map); i++) {
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ret = mt7603_init_tx_queue(dev, &dev->q_tx[i], wmm_queue_map[i],
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MT_TX_RING_SIZE, false);
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if (ret)
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return ret;
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}
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ret = mt7603_init_tx_queue(dev, &dev->q_tx[MT_TXQ_PSD],
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MT_TX_HW_QUEUE_MGMT, MT_TX_RING_SIZE, false);
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if (ret)
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return ret;
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ret = mt7603_init_tx_queue(dev, &dev->q_tx[MT_TXQ_MCU],
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MT_TX_HW_QUEUE_MCU, MT_MCU_RING_SIZE, true);
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if (ret)
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return ret;
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ret = mt7603_init_rx_queue(dev, &dev->mcu.q_rx, 1, MT_MCU_RING_SIZE,
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MT_RX_BUF_SIZE);
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if (ret)
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return ret;
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ret = mt7603_init_rx_queue(dev, &dev->q_rx, 0,
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MT_RX_RING_SIZE, MT_RX_BUF_SIZE);
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if (ret)
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return ret;
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mt7603_dma_rx_fill(dev, &dev->q_rx);
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mt7603_dma_rx_fill(dev, &dev->mcu.q_rx);
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|
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return 0;
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}
|
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|
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void mt7603_dma_cleanup(struct mt7603_dev *dev)
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{
|
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int i;
|
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tasklet_kill(&dev->tx_tasklet);
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tasklet_kill(&dev->rx_tasklet);
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for (i = 0; i < ARRAY_SIZE(dev->q_tx); i++)
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mt76_tx_cleanup(dev, &dev->q_tx[i], true);
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mt7603_rx_cleanup(dev, &dev->q_rx);
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mt7603_rx_cleanup(dev, &dev->mcu.q_rx);
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}
|
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@@ -0,0 +1,19 @@
|
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/*
|
||||
* Copyright (C) 2014 Felix Fietkau <[email protected]>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2
|
||||
* as published by the Free Software Foundation
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef __MT7603_DMA_H
|
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#define __MT7603_DMA_H
|
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|
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#include "dma.h"
|
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|
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#endif
|
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@@ -28,3 +28,18 @@ struct mt7603_dev *mt7603_alloc_device(struct device *pdev)
|
||||
|
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return dev;
|
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}
|
||||
|
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int mt7603_init_hardware(struct mt7603_dev *dev)
|
||||
{
|
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int ret;
|
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|
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ret = mt7603_dma_init(dev);
|
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if (ret)
|
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return ret;
|
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|
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ret = mt7603_mcu_init(dev);
|
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if (ret)
|
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return ret;
|
||||
|
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return 0;
|
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}
|
||||
|
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+2
-1
@@ -58,7 +58,7 @@ mt76pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
||||
if (ret)
|
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goto error;
|
||||
|
||||
ret = mt7603_mcu_init(dev);
|
||||
ret = mt7603_init_hardware(dev);
|
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if (ret)
|
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goto error;
|
||||
|
||||
@@ -78,6 +78,7 @@ mt76pci_remove(struct pci_dev *pdev)
|
||||
{
|
||||
struct mt7603_dev *dev = pci_get_drvdata(pdev);
|
||||
|
||||
mt7603_dma_cleanup(dev);
|
||||
ieee80211_free_hw(mt76_hw(dev));
|
||||
}
|
||||
|
||||
|
||||
@@ -31,9 +31,26 @@
|
||||
#define MT_HIF(ofs) (MT_HIF_BASE + (ofs))
|
||||
|
||||
#define MT_ASIC_VERSION MT_HIF(0x000)
|
||||
|
||||
#define MT_INT_SOURCE_CSR MT_HIF(0x200)
|
||||
#define MT_INT_MASK_CSR MT_HIF(0x204)
|
||||
|
||||
#define MT_INT_RX_DONE(_n) BIT(_n)
|
||||
#define MT_INT_RX_DONE_ALL GENMASK(1, 0)
|
||||
#define MT_INT_TX_DONE_ALL GENMASK(19, 4)
|
||||
#define MT_INT_TX_DONE(_n) BIT(_n + 4)
|
||||
|
||||
#define MT_INT_RX_COHERENT BIT(20)
|
||||
#define MT_INT_TX_COHERENT BIT(21)
|
||||
#define MT_INT_PRE_TBTT BIT(27)
|
||||
|
||||
#define MT_INT_MCU_CMD BIT(30)
|
||||
|
||||
#define MT_WPDMA_RST_IDX MT_HIF(0x20c)
|
||||
|
||||
#define MT_TX_RING_BASE MT_HIF(0x300)
|
||||
#define MT_RX_RING_BASE MT_HIF(0x400)
|
||||
|
||||
#define MT_SCH_1 MT_HIF(0x588)
|
||||
#define MT_SCH_2 MT_HIF(0x58c)
|
||||
#define MT_SCH_3 MT_HIF(0x590)
|
||||
@@ -45,4 +62,9 @@
|
||||
#define MT_PCIE_REMAP_BASE_1 0x40000
|
||||
#define MT_PCIE_REMAP_BASE_2 0x80000
|
||||
|
||||
#define MT_TX_HW_QUEUE_MGMT 4
|
||||
#define MT_TX_HW_QUEUE_MCU 5
|
||||
#define MT_TX_HW_QUEUE_BCN 7
|
||||
#define MT_TX_HW_QUEUE_BMC 8
|
||||
|
||||
#endif
|
||||
|
||||
@@ -29,13 +29,7 @@
|
||||
#define MT7662_ROM_PATCH "mt7662_rom_patch.bin"
|
||||
#define MT7662_EEPROM_SIZE 512
|
||||
|
||||
#define MT_RX_BUF_SIZE 2048
|
||||
#define MT_RX_HEADROOM 32
|
||||
#define MT_RX_RING_SIZE 128
|
||||
|
||||
#define MT_TX_RING_SIZE 128
|
||||
|
||||
#define MT_MCU_RING_SIZE 32
|
||||
|
||||
#define MT_MAX_CHAINS 2
|
||||
|
||||
|
||||
@@ -143,7 +143,6 @@
|
||||
|
||||
#define MT_TX_RING_BASE 0x0300
|
||||
#define MT_RX_RING_BASE 0x03c0
|
||||
#define MT_RING_SIZE 0x10
|
||||
|
||||
#define MT_TX_HW_QUEUE_MCU 8
|
||||
#define MT_TX_HW_QUEUE_MGMT 9
|
||||
|
||||
Reference in New Issue
Block a user