diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.9/0037-net-next-mediatek-bring-up-QDMA-RX-ring-0.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.9/0037-net-next-mediatek-bring-up-QDMA-RX-ring-0.patch | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.9/0037-net-next-mediatek-bring-up-QDMA-RX-ring-0.patch b/target/linux/mediatek/patches-4.9/0037-net-next-mediatek-bring-up-QDMA-RX-ring-0.patch new file mode 100644 index 0000000000..9d6a089c5e --- /dev/null +++ b/target/linux/mediatek/patches-4.9/0037-net-next-mediatek-bring-up-QDMA-RX-ring-0.patch @@ -0,0 +1,128 @@ +From 047a4e7b17322c1b32d8db32a0df9899cb4963a3 Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Fri, 21 Jul 2017 08:48:38 +0200 +Subject: [PATCH 37/57] net-next: mediatek: bring up QDMA RX ring 0 + +This patch is in peparation for adding HW flow and QoS offloading. For +those features to work, the driver needs to bring up the first QDMA RX +ring. This ring is used by the PPE offloading HW. + +Signed-off-by: John Crispin <john@phrozen.org> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 38 ++++++++++++++++++++--------- + drivers/net/ethernet/mediatek/mtk_eth_soc.h | 3 +++ + 2 files changed, 30 insertions(+), 11 deletions(-) + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -1224,11 +1224,21 @@ static void mtk_tx_clean(struct mtk_eth + + static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) + { +- struct mtk_rx_ring *ring = ð->rx_ring[ring_no]; ++ struct mtk_rx_ring *ring; + int rx_data_len, rx_dma_size; + int i; ++ u32 offset = 0; + +- if (rx_flag == MTK_RX_FLAGS_HWLRO) { ++ if (rx_flag & MTK_RX_FLAGS_QDMA) { ++ if (ring_no) ++ return -EINVAL; ++ ring = ð->rx_ring_qdma; ++ offset = 0x1000; ++ } else { ++ ring = ð->rx_ring[ring_no]; ++ } ++ ++ if (rx_flag & MTK_RX_FLAGS_HWLRO) { + rx_data_len = MTK_MAX_LRO_RX_LENGTH; + rx_dma_size = MTK_HW_LRO_DMA_SIZE; + } else { +@@ -1276,17 +1286,16 @@ static int mtk_rx_alloc(struct mtk_eth * + */ + wmb(); + +- mtk_w32(eth, ring->phys, MTK_PRX_BASE_PTR_CFG(ring_no)); +- mtk_w32(eth, rx_dma_size, MTK_PRX_MAX_CNT_CFG(ring_no)); +- mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); +- mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), MTK_PDMA_RST_IDX); ++ mtk_w32(eth, ring->phys, MTK_PRX_BASE_PTR_CFG(ring_no) + offset); ++ mtk_w32(eth, rx_dma_size, MTK_PRX_MAX_CNT_CFG(ring_no) + offset); ++ mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg + offset); ++ mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), MTK_PDMA_RST_IDX + offset); + + return 0; + } + +-static void mtk_rx_clean(struct mtk_eth *eth, int ring_no) ++static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring) + { +- struct mtk_rx_ring *ring = ð->rx_ring[ring_no]; + int i; + + if (ring->data && ring->dma) { +@@ -1612,6 +1621,10 @@ static int mtk_dma_init(struct mtk_eth * + if (err) + return err; + ++ err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_QDMA); ++ if (err) ++ return err; ++ + err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_NORMAL); + if (err) + return err; +@@ -1651,12 +1664,13 @@ static void mtk_dma_free(struct mtk_eth + eth->phy_scratch_ring = 0; + } + mtk_tx_clean(eth); +- mtk_rx_clean(eth, 0); ++ mtk_rx_clean(eth, ð->rx_ring[0]); ++ mtk_rx_clean(eth, ð->rx_ring_qdma); + + if (eth->hwlro) { + mtk_hwlro_rx_uninit(eth); + for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) +- mtk_rx_clean(eth, i); ++ mtk_rx_clean(eth, ð->rx_ring[i]); + } + + kfree(eth->scratch_head); +@@ -1723,7 +1737,9 @@ static int mtk_start_dma(struct mtk_eth + + mtk_w32(eth, + MTK_TX_WB_DDONE | MTK_TX_DMA_EN | +- MTK_DMA_SIZE_16DWORDS | MTK_NDP_CO_PRO, ++ MTK_DMA_SIZE_16DWORDS | MTK_NDP_CO_PRO | ++ MTK_RX_DMA_EN | MTK_RX_2B_OFFSET | ++ MTK_RX_BT_32DWORDS, + MTK_QDMA_GLO_CFG); + + mtk_w32(eth, +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h +@@ -484,6 +484,7 @@ struct mtk_tx_ring { + enum mtk_rx_flags { + MTK_RX_FLAGS_NORMAL = 0, + MTK_RX_FLAGS_HWLRO, ++ MTK_RX_FLAGS_QDMA, + }; + + /* struct mtk_rx_ring - This struct holds info describing a RX ring +@@ -527,6 +528,7 @@ struct mtk_rx_ring { + * @dma_refcnt: track how many netdevs are using the DMA engine + * @tx_ring: Pointer to the memory holding info about the TX ring + * @rx_ring: Pointer to the memory holding info about the RX ring ++ * @rx_ring_qdma: Pointer to the memory holding info about the QDMA RX ring + * @tx_napi: The TX NAPI struct + * @rx_napi: The RX NAPI struct + * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring +@@ -556,6 +558,7 @@ struct mtk_eth { + atomic_t dma_refcnt; + struct mtk_tx_ring tx_ring; + struct mtk_rx_ring rx_ring[MTK_MAX_RX_RING_NUM]; ++ struct mtk_rx_ring rx_ring_qdma; + struct napi_struct tx_napi; + struct napi_struct rx_napi; + struct mtk_tx_dma *scratch_ring; |