diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2023-09-18 12:29:08 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-09-19 18:27:55 +0200 |
| commit | ff0ea57fa30e860d3373acd1383e9d9599144b58 (patch) | |
| tree | 2bd10cdaf8de68b82141123776feff3ddb13acbd | |
| parent | bafd764a8baa87e19e6beeaa58eb85fcbbdd6b20 (diff) | |
| download | lwn-ff0ea57fa30e860d3373acd1383e9d9599144b58.tar.gz lwn-ff0ea57fa30e860d3373acd1383e9d9599144b58.zip | |
net: ethernet: mtk_wed: introduce mtk_wed_buf structure
Introduce mtk_wed_buf structure to store both virtual and physical
addresses allocated in mtk_wed_tx_buffer_alloc() routine. This is a
preliminary patch to add WED support for MT7988 SoC since it relies on a
different dma descriptor layout not storing page dma addresses.
Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_wed.c | 12 | ||||
| -rw-r--r-- | include/linux/soc/mediatek/mtk_wed.h | 7 |
2 files changed, 12 insertions, 7 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c index f166d4f0b793..592e497984e3 100644 --- a/drivers/net/ethernet/mediatek/mtk_wed.c +++ b/drivers/net/ethernet/mediatek/mtk_wed.c @@ -300,9 +300,9 @@ out: static int mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev) { + struct mtk_wed_buf *page_list; struct mtk_wdma_desc *desc; dma_addr_t desc_phys; - void **page_list; int token = dev->wlan.token_start; int ring_size; int n_pages; @@ -343,7 +343,8 @@ mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev) return -ENOMEM; } - page_list[page_idx++] = page; + page_list[page_idx].p = page; + page_list[page_idx++].phy_addr = page_phys; dma_sync_single_for_cpu(dev->hw->dev, page_phys, PAGE_SIZE, DMA_BIDIRECTIONAL); @@ -387,8 +388,8 @@ mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev) static void mtk_wed_free_tx_buffer(struct mtk_wed_device *dev) { + struct mtk_wed_buf *page_list = dev->tx_buf_ring.pages; struct mtk_wdma_desc *desc = dev->tx_buf_ring.desc; - void **page_list = dev->tx_buf_ring.pages; int page_idx; int i; @@ -400,13 +401,12 @@ mtk_wed_free_tx_buffer(struct mtk_wed_device *dev) for (i = 0, page_idx = 0; i < dev->tx_buf_ring.size; i += MTK_WED_BUF_PER_PAGE) { - void *page = page_list[page_idx++]; - dma_addr_t buf_addr; + dma_addr_t buf_addr = page_list[page_idx].phy_addr; + void *page = page_list[page_idx++].p; if (!page) break; - buf_addr = le32_to_cpu(desc[i].buf0); dma_unmap_page(dev->hw->dev, buf_addr, PAGE_SIZE, DMA_BIDIRECTIONAL); __free_page(page); diff --git a/include/linux/soc/mediatek/mtk_wed.h b/include/linux/soc/mediatek/mtk_wed.h index c6512c216b27..5f00dc26582b 100644 --- a/include/linux/soc/mediatek/mtk_wed.h +++ b/include/linux/soc/mediatek/mtk_wed.h @@ -76,6 +76,11 @@ struct mtk_wed_wo_rx_stats { __le32 rx_drop_cnt; }; +struct mtk_wed_buf { + void *p; + dma_addr_t phy_addr; +}; + struct mtk_wed_device { #ifdef CONFIG_NET_MEDIATEK_SOC_WED const struct mtk_wed_ops *ops; @@ -97,7 +102,7 @@ struct mtk_wed_device { struct { int size; - void **pages; + struct mtk_wed_buf *pages; struct mtk_wdma_desc *desc; dma_addr_t desc_phys; } tx_buf_ring; |