| Message ID | 557712deb9fc0e78d9a8dd7c68177fe2ae2a38ec.1642061035.git.objelf@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] mt76: sdio: remove those unnecessary buffers in sdio.xmit_buf | expand |
> From: Deren Wu <deren.wu@mediatek.com> > > We should take it into account the actual the host and the device MMC > capability to determine what the appropriate xmit_buf_size can be. > > Both MT7921S and MT7663 can support up to Tx FIFO size of 0x3fe00 which > means the device can receive 511 blocks of block size 512 in a row from > the host. So if the driver aggregates the frames as many as possible the > the device can support, we can merge multiple MMC requests into a single > one to get rid of the overhead of the handling and synchronizing in those > unnecessary MMC requests and reduce the SDIO lock contention with the > Bluetooth concurrent traffic and finally to have the higher bus > utilization with less idle cycle. > > With the patch, it is helpful for WiFi to have steady throughput > performance especially while running Bluetooth concurrently. > > Co-developed-by: Sean Wang <sean.wang@mediatek.com> > Signed-off-by: Sean Wang <sean.wang@mediatek.com> > Signed-off-by: Deren Wu <deren.wu@mediatek.com> > --- > drivers/net/wireless/mediatek/mt76/mt76.h | 4 +++- > drivers/net/wireless/mediatek/mt76/mt7615/sdio.c | 3 ++- > drivers/net/wireless/mediatek/mt76/mt7921/sdio.c | 3 ++- > drivers/net/wireless/mediatek/mt76/sdio.c | 13 +++++++++++++ > drivers/net/wireless/mediatek/mt76/sdio_txrx.c | 2 +- > 5 files changed, 21 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h > index 4029a2217397..8703ecd6396f 100644 > --- a/drivers/net/wireless/mediatek/mt76/mt76.h > +++ b/drivers/net/wireless/mediatek/mt76/mt76.h > @@ -497,7 +497,7 @@ struct mt76_usb { > } mcu; > }; > > -#define MT76S_XMIT_BUF_SZ (16 * PAGE_SIZE) > +#define MT76S_XMIT_BUF_SZ 0x3fe00 > #define MT76S_NUM_TX_ENTRIES 256 > #define MT76S_NUM_RX_ENTRIES 512 > struct mt76_sdio { > @@ -508,6 +508,7 @@ struct mt76_sdio { > struct work_struct stat_work; > > u8 *xmit_buf; > + u32 xmit_buf_sz; > > struct sdio_func *func; > void *intr_data; > @@ -1280,6 +1281,7 @@ void mt76u_queues_deinit(struct mt76_dev *dev); > > int mt76s_init(struct mt76_dev *dev, struct sdio_func *func, > const struct mt76_bus_ops *bus_ops); > +u32 mt76s_get_xmit_buf_sz(struct mt76_dev *dev, u32 dev_xmit_sz); > int mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid); > int mt76s_alloc_tx(struct mt76_dev *dev); > void mt76s_deinit(struct mt76_dev *dev); > diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c > index 554160b0ea9a..ed778b635391 100644 > --- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c > +++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c > @@ -140,7 +140,8 @@ static int mt7663s_probe(struct sdio_func *func, > goto error; > } > > - mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, MT76S_XMIT_BUF_SZ, > + mdev->sdio.xmit_buf_sz = mt76s_get_xmit_buf_sz(mdev, MT76S_XMIT_BUF_SZ); > + mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, mdev->sdio.xmit_buf_sz, > GFP_KERNEL); > if (!mdev->sdio.xmit_buf) { > ret = -ENOMEM; > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c > index c58c14e28430..6e5d9e9459ad 100644 > --- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c > @@ -154,7 +154,8 @@ static int mt7921s_probe(struct sdio_func *func, > goto error; > } > > - mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, MT76S_XMIT_BUF_SZ, > + mdev->sdio.xmit_buf_sz = mt76s_get_xmit_buf_sz(mdev, MT76S_XMIT_BUF_SZ); > + mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, mdev->sdio.xmit_buf_sz, > GFP_KERNEL); > if (!mdev->sdio.xmit_buf) { > ret = -ENOMEM; > diff --git a/drivers/net/wireless/mediatek/mt76/sdio.c b/drivers/net/wireless/mediatek/mt76/sdio.c > index 54f72d215948..bd0027152026 100644 > --- a/drivers/net/wireless/mediatek/mt76/sdio.c > +++ b/drivers/net/wireless/mediatek/mt76/sdio.c > @@ -12,6 +12,8 @@ > #include <linux/kernel.h> > #include <linux/module.h> > #include <linux/mmc/sdio_func.h> > +#include <linux/mmc/card.h> > +#include <linux/mmc/host.h> > #include <linux/sched.h> > #include <linux/kthread.h> > > @@ -299,6 +301,17 @@ int mt76s_hw_init(struct mt76_dev *dev, struct sdio_func *func, int hw_ver) > } > EXPORT_SYMBOL_GPL(mt76s_hw_init); > > +u32 mt76s_get_xmit_buf_sz(struct mt76_dev *dev, u32 dev_max_len) > +{ > + struct sdio_func *func = dev->sdio.func; > + u32 host_max_len = min_t(u32, func->card->host->max_req_size, > + func->cur_blksize * > + func->card->host->max_blk_count); > + > + return min_t(u32, host_max_len, dev_max_len); > +} > +EXPORT_SYMBOL_GPL(mt76s_get_xmit_buf_sz); I think we can squash this patch with the previous one and move the code above in mt76s_init(). Agree? Regards, Lorenzo > + > int mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid) > { > struct mt76_queue *q = &dev->q_rx[qid]; > diff --git a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c > index a04cd2444247..9fcf507e09bd 100644 > --- a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c > +++ b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c > @@ -254,7 +254,7 @@ static int mt76s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q) > } > > pad = roundup(e->skb->len, 4) - e->skb->len; > - if (len + e->skb->len + pad + 4 > MT76S_XMIT_BUF_SZ) > + if (len + e->skb->len + pad + 4 > dev->sdio.xmit_buf_sz) > break; > > if (mt76s_tx_pick_quota(sdio, mcu, e->buf_sz, &pse_sz, > -- > 2.25.1 >
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 4029a2217397..8703ecd6396f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -497,7 +497,7 @@ struct mt76_usb { } mcu; }; -#define MT76S_XMIT_BUF_SZ (16 * PAGE_SIZE) +#define MT76S_XMIT_BUF_SZ 0x3fe00 #define MT76S_NUM_TX_ENTRIES 256 #define MT76S_NUM_RX_ENTRIES 512 struct mt76_sdio { @@ -508,6 +508,7 @@ struct mt76_sdio { struct work_struct stat_work; u8 *xmit_buf; + u32 xmit_buf_sz; struct sdio_func *func; void *intr_data; @@ -1280,6 +1281,7 @@ void mt76u_queues_deinit(struct mt76_dev *dev); int mt76s_init(struct mt76_dev *dev, struct sdio_func *func, const struct mt76_bus_ops *bus_ops); +u32 mt76s_get_xmit_buf_sz(struct mt76_dev *dev, u32 dev_xmit_sz); int mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid); int mt76s_alloc_tx(struct mt76_dev *dev); void mt76s_deinit(struct mt76_dev *dev); diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c index 554160b0ea9a..ed778b635391 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c @@ -140,7 +140,8 @@ static int mt7663s_probe(struct sdio_func *func, goto error; } - mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, MT76S_XMIT_BUF_SZ, + mdev->sdio.xmit_buf_sz = mt76s_get_xmit_buf_sz(mdev, MT76S_XMIT_BUF_SZ); + mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, mdev->sdio.xmit_buf_sz, GFP_KERNEL); if (!mdev->sdio.xmit_buf) { ret = -ENOMEM; diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c index c58c14e28430..6e5d9e9459ad 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c @@ -154,7 +154,8 @@ static int mt7921s_probe(struct sdio_func *func, goto error; } - mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, MT76S_XMIT_BUF_SZ, + mdev->sdio.xmit_buf_sz = mt76s_get_xmit_buf_sz(mdev, MT76S_XMIT_BUF_SZ); + mdev->sdio.xmit_buf = devm_kmalloc(mdev->dev, mdev->sdio.xmit_buf_sz, GFP_KERNEL); if (!mdev->sdio.xmit_buf) { ret = -ENOMEM; diff --git a/drivers/net/wireless/mediatek/mt76/sdio.c b/drivers/net/wireless/mediatek/mt76/sdio.c index 54f72d215948..bd0027152026 100644 --- a/drivers/net/wireless/mediatek/mt76/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/sdio.c @@ -12,6 +12,8 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/mmc/sdio_func.h> +#include <linux/mmc/card.h> +#include <linux/mmc/host.h> #include <linux/sched.h> #include <linux/kthread.h> @@ -299,6 +301,17 @@ int mt76s_hw_init(struct mt76_dev *dev, struct sdio_func *func, int hw_ver) } EXPORT_SYMBOL_GPL(mt76s_hw_init); +u32 mt76s_get_xmit_buf_sz(struct mt76_dev *dev, u32 dev_max_len) +{ + struct sdio_func *func = dev->sdio.func; + u32 host_max_len = min_t(u32, func->card->host->max_req_size, + func->cur_blksize * + func->card->host->max_blk_count); + + return min_t(u32, host_max_len, dev_max_len); +} +EXPORT_SYMBOL_GPL(mt76s_get_xmit_buf_sz); + int mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid) { struct mt76_queue *q = &dev->q_rx[qid]; diff --git a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c index a04cd2444247..9fcf507e09bd 100644 --- a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c +++ b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c @@ -254,7 +254,7 @@ static int mt76s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q) } pad = roundup(e->skb->len, 4) - e->skb->len; - if (len + e->skb->len + pad + 4 > MT76S_XMIT_BUF_SZ) + if (len + e->skb->len + pad + 4 > dev->sdio.xmit_buf_sz) break; if (mt76s_tx_pick_quota(sdio, mcu, e->buf_sz, &pse_sz,