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net: mediatek: stop using bitfileds for DMA descriptors
This patch is a preparation for adding a new version of PDMA of which the DMA descriptor fields has changed. Using bitfields will result in a complex modification. Convert bitfields to u32 units can solve this problem easily. Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Daniel Golle <daniel@makrotopia.org> Signed-off-by: Weijie Gao <weijie.gao@mediatek.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
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2 changed files with 80 additions and 96 deletions
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@ -65,77 +65,6 @@
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(DP_DISCARD << MC_DP_S) | \
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(DP_DISCARD << UN_DP_S))
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struct pdma_rxd_info1 {
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u32 PDP0;
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};
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struct pdma_rxd_info2 {
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u32 PLEN1 : 14;
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u32 LS1 : 1;
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u32 UN_USED : 1;
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u32 PLEN0 : 14;
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u32 LS0 : 1;
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u32 DDONE : 1;
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};
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struct pdma_rxd_info3 {
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u32 PDP1;
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};
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struct pdma_rxd_info4 {
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u32 FOE_ENTRY : 14;
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u32 CRSN : 5;
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u32 SP : 3;
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u32 L4F : 1;
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u32 L4VLD : 1;
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u32 TACK : 1;
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u32 IP4F : 1;
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u32 IP4 : 1;
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u32 IP6 : 1;
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u32 UN_USED : 4;
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};
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struct pdma_rxdesc {
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struct pdma_rxd_info1 rxd_info1;
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struct pdma_rxd_info2 rxd_info2;
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struct pdma_rxd_info3 rxd_info3;
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struct pdma_rxd_info4 rxd_info4;
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};
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struct pdma_txd_info1 {
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u32 SDP0;
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};
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struct pdma_txd_info2 {
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u32 SDL1 : 14;
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u32 LS1 : 1;
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u32 BURST : 1;
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u32 SDL0 : 14;
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u32 LS0 : 1;
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u32 DDONE : 1;
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};
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struct pdma_txd_info3 {
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u32 SDP1;
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};
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struct pdma_txd_info4 {
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u32 VLAN_TAG : 16;
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u32 INS : 1;
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u32 RESV : 2;
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u32 UDF : 6;
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u32 FPORT : 3;
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u32 TSO : 1;
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u32 TUI_CO : 3;
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};
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struct pdma_txdesc {
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struct pdma_txd_info1 txd_info1;
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struct pdma_txd_info2 txd_info2;
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struct pdma_txd_info3 txd_info3;
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struct pdma_txd_info4 txd_info4;
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};
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enum mtk_switch {
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SW_NONE,
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SW_MT7530,
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@ -151,13 +80,15 @@ enum mtk_switch {
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struct mtk_soc_data {
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u32 caps;
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u32 ana_rgc3;
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u32 txd_size;
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u32 rxd_size;
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};
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struct mtk_eth_priv {
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char pkt_pool[TOTAL_PKT_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
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struct pdma_txdesc *tx_ring_noc;
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struct pdma_rxdesc *rx_ring_noc;
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void *tx_ring_noc;
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void *rx_ring_noc;
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int rx_dma_owner_idx0;
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int tx_cpu_owner_idx0;
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@ -1202,14 +1133,16 @@ static void mtk_mac_init(struct mtk_eth_priv *priv)
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static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
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{
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char *pkt_base = priv->pkt_pool;
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struct mtk_tx_dma *txd;
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struct mtk_rx_dma *rxd;
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int i;
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mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG, 0xffff0000, 0);
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udelay(500);
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memset(priv->tx_ring_noc, 0, NUM_TX_DESC * sizeof(struct pdma_txdesc));
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memset(priv->rx_ring_noc, 0, NUM_RX_DESC * sizeof(struct pdma_rxdesc));
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memset(priv->pkt_pool, 0, TOTAL_PKT_BUF_SIZE);
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memset(priv->tx_ring_noc, 0, NUM_TX_DESC * priv->soc->txd_size);
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memset(priv->rx_ring_noc, 0, NUM_RX_DESC * priv->soc->rxd_size);
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memset(priv->pkt_pool, 0xff, TOTAL_PKT_BUF_SIZE);
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flush_dcache_range((ulong)pkt_base,
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(ulong)(pkt_base + TOTAL_PKT_BUF_SIZE));
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@ -1218,17 +1151,21 @@ static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
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priv->tx_cpu_owner_idx0 = 0;
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for (i = 0; i < NUM_TX_DESC; i++) {
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priv->tx_ring_noc[i].txd_info2.LS0 = 1;
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priv->tx_ring_noc[i].txd_info2.DDONE = 1;
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priv->tx_ring_noc[i].txd_info4.FPORT = priv->gmac_id + 1;
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txd = priv->tx_ring_noc + i * priv->soc->txd_size;
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txd->txd1 = virt_to_phys(pkt_base);
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txd->txd2 = PDMA_TXD2_DDONE | PDMA_TXD2_LS0;
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txd->txd4 = PDMA_TXD4_FPORT_SET(priv->gmac_id + 1);
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priv->tx_ring_noc[i].txd_info1.SDP0 = virt_to_phys(pkt_base);
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pkt_base += PKTSIZE_ALIGN;
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}
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for (i = 0; i < NUM_RX_DESC; i++) {
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priv->rx_ring_noc[i].rxd_info2.PLEN0 = PKTSIZE_ALIGN;
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priv->rx_ring_noc[i].rxd_info1.PDP0 = virt_to_phys(pkt_base);
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rxd = priv->rx_ring_noc + i * priv->soc->rxd_size;
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rxd->rxd1 = virt_to_phys(pkt_base);
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rxd->rxd2 = PDMA_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
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pkt_base += PKTSIZE_ALIGN;
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}
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@ -1315,20 +1252,22 @@ static int mtk_eth_send(struct udevice *dev, void *packet, int length)
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{
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struct mtk_eth_priv *priv = dev_get_priv(dev);
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u32 idx = priv->tx_cpu_owner_idx0;
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struct mtk_tx_dma *txd;
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void *pkt_base;
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if (!priv->tx_ring_noc[idx].txd_info2.DDONE) {
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txd = priv->tx_ring_noc + idx * priv->soc->txd_size;
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if (!(txd->txd2 & PDMA_TXD2_DDONE)) {
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debug("mtk-eth: TX DMA descriptor ring is full\n");
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return -EPERM;
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}
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pkt_base = (void *)phys_to_virt(priv->tx_ring_noc[idx].txd_info1.SDP0);
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pkt_base = (void *)phys_to_virt(txd->txd1);
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memcpy(pkt_base, packet, length);
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flush_dcache_range((ulong)pkt_base, (ulong)pkt_base +
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roundup(length, ARCH_DMA_MINALIGN));
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priv->tx_ring_noc[idx].txd_info2.SDL0 = length;
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priv->tx_ring_noc[idx].txd_info2.DDONE = 0;
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txd->txd2 = PDMA_TXD2_LS0 | PDMA_TXD2_SDL0_SET(length);
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priv->tx_cpu_owner_idx0 = (priv->tx_cpu_owner_idx0 + 1) % NUM_TX_DESC;
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mtk_pdma_write(priv, TX_CTX_IDX_REG(0), priv->tx_cpu_owner_idx0);
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@ -1340,16 +1279,20 @@ static int mtk_eth_recv(struct udevice *dev, int flags, uchar **packetp)
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{
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struct mtk_eth_priv *priv = dev_get_priv(dev);
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u32 idx = priv->rx_dma_owner_idx0;
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struct mtk_rx_dma *rxd;
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uchar *pkt_base;
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u32 length;
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if (!priv->rx_ring_noc[idx].rxd_info2.DDONE) {
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rxd = priv->rx_ring_noc + idx * priv->soc->rxd_size;
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if (!(rxd->rxd2 & PDMA_RXD2_DDONE)) {
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debug("mtk-eth: RX DMA descriptor ring is empty\n");
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return -EAGAIN;
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}
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length = priv->rx_ring_noc[idx].rxd_info2.PLEN0;
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pkt_base = (void *)phys_to_virt(priv->rx_ring_noc[idx].rxd_info1.PDP0);
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length = PDMA_RXD2_PLEN0_GET(rxd->rxd2);
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pkt_base = (void *)phys_to_virt(rxd->rxd1);
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invalidate_dcache_range((ulong)pkt_base, (ulong)pkt_base +
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roundup(length, ARCH_DMA_MINALIGN));
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@ -1363,10 +1306,11 @@ static int mtk_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
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{
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struct mtk_eth_priv *priv = dev_get_priv(dev);
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u32 idx = priv->rx_dma_owner_idx0;
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struct mtk_rx_dma *rxd;
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priv->rx_ring_noc[idx].rxd_info2.DDONE = 0;
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priv->rx_ring_noc[idx].rxd_info2.LS0 = 0;
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priv->rx_ring_noc[idx].rxd_info2.PLEN0 = PKTSIZE_ALIGN;
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rxd = priv->rx_ring_noc + idx * priv->soc->rxd_size;
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rxd->rxd2 = PDMA_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
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mtk_pdma_write(priv, RX_CRX_IDX_REG(0), idx);
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priv->rx_dma_owner_idx0 = (priv->rx_dma_owner_idx0 + 1) % NUM_RX_DESC;
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@ -1393,11 +1337,11 @@ static int mtk_eth_probe(struct udevice *dev)
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return ret;
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/* Prepare for tx/rx rings */
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priv->tx_ring_noc = (struct pdma_txdesc *)
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noncached_alloc(sizeof(struct pdma_txdesc) * NUM_TX_DESC,
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priv->tx_ring_noc = (void *)
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noncached_alloc(priv->soc->txd_size * NUM_TX_DESC,
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ARCH_DMA_MINALIGN);
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priv->rx_ring_noc = (struct pdma_rxdesc *)
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noncached_alloc(sizeof(struct pdma_rxdesc) * NUM_RX_DESC,
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priv->rx_ring_noc = (void *)
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noncached_alloc(priv->soc->rxd_size * NUM_RX_DESC,
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ARCH_DMA_MINALIGN);
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/* Set MAC mode */
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@ -1554,18 +1498,26 @@ static int mtk_eth_of_to_plat(struct udevice *dev)
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static const struct mtk_soc_data mt7629_data = {
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.ana_rgc3 = 0x128,
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.txd_size = sizeof(struct mtk_tx_dma),
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.rxd_size = sizeof(struct mtk_rx_dma),
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};
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static const struct mtk_soc_data mt7623_data = {
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.caps = MT7623_CAPS,
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.txd_size = sizeof(struct mtk_tx_dma),
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.rxd_size = sizeof(struct mtk_rx_dma),
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};
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static const struct mtk_soc_data mt7622_data = {
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.ana_rgc3 = 0x2028,
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.txd_size = sizeof(struct mtk_tx_dma),
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.rxd_size = sizeof(struct mtk_rx_dma),
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};
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static const struct mtk_soc_data mt7621_data = {
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.caps = MT7621_CAPS,
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.txd_size = sizeof(struct mtk_tx_dma),
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.rxd_size = sizeof(struct mtk_rx_dma),
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};
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static const struct udevice_id mtk_eth_ids[] = {
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@ -10,6 +10,7 @@
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#define _MTK_ETH_H_
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#include <linux/bitops.h>
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#include <linux/bitfield.h>
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enum mkt_eth_capabilities {
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MTK_TRGMII_BIT,
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@ -435,4 +436,35 @@ enum mkt_eth_capabilities {
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#define PHY_POWER_SAVING_M 0x300
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#define PHY_POWER_SAVING_TX 0x0
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/* PDMA descriptors */
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struct mtk_rx_dma {
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unsigned int rxd1;
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unsigned int rxd2;
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unsigned int rxd3;
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unsigned int rxd4;
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} __packed __aligned(4);
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struct mtk_tx_dma {
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unsigned int txd1;
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unsigned int txd2;
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unsigned int txd3;
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unsigned int txd4;
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} __packed __aligned(4);
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/* PDMA TXD fields */
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#define PDMA_TXD2_DDONE BIT(31)
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#define PDMA_TXD2_LS0 BIT(30)
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#define PDMA_TXD2_SDL0_M GENMASK(29, 16)
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#define PDMA_TXD2_SDL0_SET(_v) FIELD_PREP(PDMA_TXD2_SDL0_M, (_v))
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#define PDMA_TXD4_FPORT_M GENMASK(27, 25)
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#define PDMA_TXD4_FPORT_SET(_v) FIELD_PREP(PDMA_TXD4_FPORT_M, (_v))
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/* PDMA RXD fields */
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#define PDMA_RXD2_DDONE BIT(31)
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#define PDMA_RXD2_LS0 BIT(30)
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#define PDMA_RXD2_PLEN0_M GENMASK(29, 16)
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#define PDMA_RXD2_PLEN0_GET(_v) FIELD_GET(PDMA_RXD2_PLEN0_M, (_v))
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#define PDMA_RXD2_PLEN0_SET(_v) FIELD_PREP(PDMA_RXD2_PLEN0_M, (_v))
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#endif /* _MTK_ETH_H_ */
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