diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2019-03-14 14:54:12 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2019-05-01 13:03:55 +0200 |
| commit | b5903c470328b15f828ebb9c42da63da6d0cf8a1 (patch) | |
| tree | e89ec33c65c19154cc4c66eececa0049a01781fc /drivers/net/wireless/mediatek/mt76/dma.c | |
| parent | eb071ba77c239e0c028de40d1663b92c6f5bff3e (diff) | |
| download | linux-b5903c470328b15f828ebb9c42da63da6d0cf8a1.tar.bz2 | |
mt76: introduce mt76_tx_info data structure
Add mt76_tx_info as auxiliary data structure to pass values
to tx_prepare_skb pointer. This is a preliminary patch to add
support for new chipsets (e.g. mt7615)
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 64df51fe82b3..41f254958760 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -283,13 +283,12 @@ int mt76_dma_tx_queue_skb(struct mt76_dev *dev, enum mt76_txq_id qid, struct ieee80211_sta *sta) { struct mt76_queue *q = dev->q_tx[qid].q; + struct mt76_tx_info tx_info = {}; + int len, n = 0, ret = -ENOMEM; struct mt76_queue_entry e; struct mt76_txwi_cache *t; - struct mt76_queue_buf buf[32]; - int len, n = 0, ret = -ENOMEM; struct sk_buff *iter; dma_addr_t addr; - u32 tx_info = 0; t = mt76_get_txwi(dev); if (!t) { @@ -306,13 +305,13 @@ int mt76_dma_tx_queue_skb(struct mt76_dev *dev, enum mt76_txq_id qid, if (dma_mapping_error(dev->dev, addr)) goto free; - buf[n].addr = t->dma_addr; - buf[n++].len = dev->drv->txwi_size; - buf[n].addr = addr; - buf[n++].len = len; + tx_info.buf[n].addr = t->dma_addr; + tx_info.buf[n++].len = dev->drv->txwi_size; + tx_info.buf[n].addr = addr; + tx_info.buf[n++].len = len; skb_walk_frags(skb, iter) { - if (n == ARRAY_SIZE(buf)) + if (n == ARRAY_SIZE(tx_info.buf)) goto unmap; addr = dma_map_single(dev->dev, iter->data, iter->len, @@ -320,9 +319,10 @@ int mt76_dma_tx_queue_skb(struct mt76_dev *dev, enum mt76_txq_id qid, if (dma_mapping_error(dev->dev, addr)) goto unmap; - buf[n].addr = addr; - buf[n++].len = iter->len; + tx_info.buf[n].addr = addr; + tx_info.buf[n++].len = iter->len; } + tx_info.nbuf = n; dma_sync_single_for_cpu(dev->dev, t->dma_addr, sizeof(t->txwi), DMA_TO_DEVICE); @@ -333,17 +333,18 @@ int mt76_dma_tx_queue_skb(struct mt76_dev *dev, enum mt76_txq_id qid, if (ret < 0) goto unmap; - if (q->queued + (n + 1) / 2 >= q->ndesc - 1) { + if (q->queued + (tx_info.nbuf + 1) / 2 >= q->ndesc - 1) { ret = -ENOMEM; goto unmap; } - return mt76_dma_add_buf(dev, q, buf, n, tx_info, skb, t); + return mt76_dma_add_buf(dev, q, tx_info.buf, tx_info.nbuf, + tx_info.info, skb, t); unmap: for (n--; n > 0; n--) - dma_unmap_single(dev->dev, buf[n].addr, buf[n].len, - DMA_TO_DEVICE); + dma_unmap_single(dev->dev, tx_info.buf[n].addr, + tx_info.buf[n].len, DMA_TO_DEVICE); free: e.skb = skb; |