/
dma.c
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dma.c
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// SPDX-License-Identifier: ISC
/* Copyright (C) 2019 MediaTek Inc.
*
* Author: Ryder Lee <ryder.lee@mediatek.com>
* Roy Luo <royluo@google.com>
* Lorenzo Bianconi <lorenzo@kernel.org>
* Felix Fietkau <nbd@nbd.name>
*/
#include "mt7615.h"
#include "../dma.h"
#include "mac.h"
static int
mt7622_init_tx_queues_multi(struct mt7615_dev *dev)
{
static const u8 wmm_queue_map[] = {
[IEEE80211_AC_BK] = MT7622_TXQ_AC0,
[IEEE80211_AC_BE] = MT7622_TXQ_AC1,
[IEEE80211_AC_VI] = MT7622_TXQ_AC2,
[IEEE80211_AC_VO] = MT7622_TXQ_AC3,
};
int ret;
int i;
for (i = 0; i < ARRAY_SIZE(wmm_queue_map); i++) {
ret = mt76_init_tx_queue(&dev->mphy, i, wmm_queue_map[i],
MT7615_TX_RING_SIZE / 2,
MT_TX_RING_BASE, 0);
if (ret)
return ret;
}
ret = mt76_init_tx_queue(&dev->mphy, MT_TXQ_PSD, MT7622_TXQ_MGMT,
MT7615_TX_MGMT_RING_SIZE,
MT_TX_RING_BASE, 0);
if (ret)
return ret;
return mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_WM, MT7622_TXQ_MCU,
MT7615_TX_MCU_RING_SIZE, MT_TX_RING_BASE);
}
static int
mt7615_init_tx_queues(struct mt7615_dev *dev)
{
int ret;
ret = mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_FWDL, MT7615_TXQ_FWDL,
MT7615_TX_FWDL_RING_SIZE, MT_TX_RING_BASE);
if (ret)
return ret;
if (!is_mt7615(&dev->mt76))
return mt7622_init_tx_queues_multi(dev);
ret = mt76_connac_init_tx_queues(&dev->mphy, 0, MT7615_TX_RING_SIZE,
MT_TX_RING_BASE, 0);
if (ret)
return ret;
return mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_WM, MT7615_TXQ_MCU,
MT7615_TX_MCU_RING_SIZE, MT_TX_RING_BASE);
}
static int mt7615_poll_tx(struct napi_struct *napi, int budget)
{
struct mt7615_dev *dev;
dev = container_of(napi, struct mt7615_dev, mt76.tx_napi);
if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
napi_complete(napi);
queue_work(dev->mt76.wq, &dev->pm.wake_work);
return 0;
}
mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WM], false);
if (napi_complete(napi))
mt7615_irq_enable(dev, mt7615_tx_mcu_int_mask(dev));
mt76_connac_pm_unref(&dev->mphy, &dev->pm);
return 0;
}
static int mt7615_poll_rx(struct napi_struct *napi, int budget)
{
struct mt7615_dev *dev;
int done;
dev = container_of(napi->dev, struct mt7615_dev, mt76.napi_dev);
if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
napi_complete(napi);
queue_work(dev->mt76.wq, &dev->pm.wake_work);
return 0;
}
done = mt76_dma_rx_poll(napi, budget);
mt76_connac_pm_unref(&dev->mphy, &dev->pm);
return done;
}
int mt7615_wait_pdma_busy(struct mt7615_dev *dev)
{
struct mt76_dev *mdev = &dev->mt76;
if (!is_mt7663(mdev)) {
u32 mask = MT_PDMA_TX_BUSY | MT_PDMA_RX_BUSY;
u32 reg = mt7615_reg_map(dev, MT_PDMA_BUSY);
if (!mt76_poll_msec(dev, reg, mask, 0, 1000)) {
dev_err(mdev->dev, "PDMA engine busy\n");
return -EIO;
}
return 0;
}
if (!mt76_poll_msec(dev, MT_PDMA_BUSY_STATUS,
MT_PDMA_TX_IDX_BUSY, 0, 1000)) {
dev_err(mdev->dev, "PDMA engine tx busy\n");
return -EIO;
}
if (!mt76_poll_msec(dev, MT_PSE_PG_INFO,
MT_PSE_SRC_CNT, 0, 1000)) {
dev_err(mdev->dev, "PSE engine busy\n");
return -EIO;
}
if (!mt76_poll_msec(dev, MT_PDMA_BUSY_STATUS,
MT_PDMA_BUSY_IDX, 0, 1000)) {
dev_err(mdev->dev, "PDMA engine busy\n");
return -EIO;
}
return 0;
}
static void mt7622_dma_sched_init(struct mt7615_dev *dev)
{
u32 reg = mt7615_reg_map(dev, MT_DMASHDL_BASE);
int i;
mt76_rmw(dev, reg + MT_DMASHDL_PKT_MAX_SIZE,
MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE,
FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) |
FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 8));
for (i = 0; i <= 5; i++)
mt76_wr(dev, reg + MT_DMASHDL_GROUP_QUOTA(i),
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x10) |
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x800));
mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(0), 0x42104210);
mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(1), 0x42104210);
mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(2), 0x5);
mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(3), 0);
mt76_wr(dev, reg + MT_DMASHDL_SCHED_SET0, 0x6012345f);
mt76_wr(dev, reg + MT_DMASHDL_SCHED_SET1, 0xedcba987);
}
static void mt7663_dma_sched_init(struct mt7615_dev *dev)
{
int i;
mt76_rmw(dev, MT_DMA_SHDL(MT_DMASHDL_PKT_MAX_SIZE),
MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE,
FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) |
FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 8));
/* enable refill control group 0, 1, 2, 4, 5 */
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_REFILL), 0xffc80000);
/* enable group 0, 1, 2, 4, 5, 15 */
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_OPTIONAL), 0x70068037);
/* each group min quota must larger then PLE_PKT_MAX_SIZE_NUM */
for (i = 0; i < 5; i++)
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(i)),
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x40) |
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x800));
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(5)),
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x40) |
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x40));
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(15)),
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x20) |
FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x20));
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(0)), 0x42104210);
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(1)), 0x42104210);
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(2)), 0x00050005);
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(3)), 0);
/* ALTX0 and ALTX1 QID mapping to group 5 */
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET0), 0x6012345f);
mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET1), 0xedcba987);
}
void mt7615_dma_start(struct mt7615_dev *dev)
{
/* start dma engine */
mt76_set(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_RX_DMA_EN |
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
if (is_mt7622(&dev->mt76))
mt7622_dma_sched_init(dev);
if (is_mt7663(&dev->mt76)) {
mt7663_dma_sched_init(dev);
mt76_wr(dev, MT_MCU2HOST_INT_ENABLE, MT7663_MCU_CMD_ERROR_MASK);
}
}
int mt7615_dma_init(struct mt7615_dev *dev)
{
int rx_ring_size = MT7615_RX_RING_SIZE;
u32 mask;
int ret;
mt76_dma_attach(&dev->mt76);
mt76_wr(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE |
MT_WPDMA_GLO_CFG_FIFO_LITTLE_ENDIAN |
MT_WPDMA_GLO_CFG_OMIT_TX_INFO);
mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_BT_SIZE_BIT0, 0x1);
mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_BT_SIZE_BIT21, 0x1);
mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_DMA_BURST_SIZE, 0x3);
mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_MULTI_DMA_EN, 0x3);
if (is_mt7615(&dev->mt76)) {
mt76_set(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_FIRST_TOKEN_ONLY);
mt76_wr(dev, MT_WPDMA_GLO_CFG1, 0x1);
mt76_wr(dev, MT_WPDMA_TX_PRE_CFG, 0xf0000);
mt76_wr(dev, MT_WPDMA_RX_PRE_CFG, 0xf7f0000);
mt76_wr(dev, MT_WPDMA_ABT_CFG, 0x4000026);
mt76_wr(dev, MT_WPDMA_ABT_CFG1, 0x18811881);
mt76_set(dev, 0x7158, BIT(16));
mt76_clear(dev, 0x7000, BIT(23));
}
mt76_wr(dev, MT_WPDMA_RST_IDX, ~0);
ret = mt7615_init_tx_queues(dev);
if (ret)
return ret;
/* init rx queues */
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU], 1,
MT7615_RX_MCU_RING_SIZE, MT_RX_BUF_SIZE,
MT_RX_RING_BASE);
if (ret)
return ret;
if (!is_mt7615(&dev->mt76))
rx_ring_size /= 2;
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN], 0,
rx_ring_size, MT_RX_BUF_SIZE, MT_RX_RING_BASE);
if (ret)
return ret;
mt76_wr(dev, MT_DELAY_INT_CFG, 0);
ret = mt76_init_queues(dev, mt7615_poll_rx);
if (ret < 0)
return ret;
netif_tx_napi_add(&dev->mt76.tx_napi_dev, &dev->mt76.tx_napi,
mt7615_poll_tx, NAPI_POLL_WEIGHT);
napi_enable(&dev->mt76.tx_napi);
mt76_poll(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 1000);
/* enable interrupts for TX/RX rings */
mask = MT_INT_RX_DONE_ALL | mt7615_tx_mcu_int_mask(dev);
if (is_mt7663(&dev->mt76))
mask |= MT7663_INT_MCU_CMD;
else
mask |= MT_INT_MCU_CMD;
mt7615_irq_enable(dev, mask);
mt7615_dma_start(dev);
return 0;
}
void mt7615_dma_cleanup(struct mt7615_dev *dev)
{
mt76_clear(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_RX_DMA_EN);
mt76_set(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_SW_RESET);
mt76_dma_cleanup(&dev->mt76);
}