| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * This is the driver for the GMAC on-chip Ethernet controller for ST SoCs. |
| * DWC Ether MAC version 4.xx has been used for developing this code. |
| * |
| * This contains the functions to handle the dma. |
| * |
| * Copyright (C) 2015 STMicroelectronics Ltd |
| * |
| * Author: Alexandre Torgue <alexandre.torgue@st.com> |
| */ |
| |
| #include <linux/io.h> |
| #include "dwmac4.h" |
| #include "dwmac4_dma.h" |
| #include "stmmac.h" |
| |
| static void dwmac4_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi) |
| { |
| u32 value = readl(ioaddr + DMA_SYS_BUS_MODE); |
| int i; |
| |
| pr_info("dwmac4: Master AXI performs %s burst length\n", |
| (value & DMA_SYS_BUS_FB) ? "fixed" : "any"); |
| |
| if (axi->axi_lpi_en) |
| value |= DMA_AXI_EN_LPI; |
| if (axi->axi_xit_frm) |
| value |= DMA_AXI_LPI_XIT_FRM; |
| |
| value &= ~DMA_AXI_WR_OSR_LMT; |
| value |= (axi->axi_wr_osr_lmt & DMA_AXI_OSR_MAX) << |
| DMA_AXI_WR_OSR_LMT_SHIFT; |
| |
| value &= ~DMA_AXI_RD_OSR_LMT; |
| value |= (axi->axi_rd_osr_lmt & DMA_AXI_OSR_MAX) << |
| DMA_AXI_RD_OSR_LMT_SHIFT; |
| |
| /* Depending on the UNDEF bit the Master AXI will perform any burst |
| * length according to the BLEN programmed (by default all BLEN are |
| * set). |
| */ |
| for (i = 0; i < AXI_BLEN; i++) { |
| switch (axi->axi_blen[i]) { |
| case 256: |
| value |= DMA_AXI_BLEN256; |
| break; |
| case 128: |
| value |= DMA_AXI_BLEN128; |
| break; |
| case 64: |
| value |= DMA_AXI_BLEN64; |
| break; |
| case 32: |
| value |= DMA_AXI_BLEN32; |
| break; |
| case 16: |
| value |= DMA_AXI_BLEN16; |
| break; |
| case 8: |
| value |= DMA_AXI_BLEN8; |
| break; |
| case 4: |
| value |= DMA_AXI_BLEN4; |
| break; |
| } |
| } |
| |
| writel(value, ioaddr + DMA_SYS_BUS_MODE); |
| } |
| |
| static void dwmac4_dma_init_rx_chan(struct stmmac_priv *priv, |
| void __iomem *ioaddr, |
| struct stmmac_dma_cfg *dma_cfg, |
| dma_addr_t dma_rx_phy, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value; |
| u32 rxpbl = dma_cfg->rxpbl ?: dma_cfg->pbl; |
| |
| value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan)); |
| value = value | (rxpbl << DMA_BUS_MODE_RPBL_SHIFT); |
| writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan)); |
| |
| if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame)) |
| writel(upper_32_bits(dma_rx_phy), |
| ioaddr + DMA_CHAN_RX_BASE_ADDR_HI(dwmac4_addrs, chan)); |
| |
| writel(lower_32_bits(dma_rx_phy), |
| ioaddr + DMA_CHAN_RX_BASE_ADDR(dwmac4_addrs, chan)); |
| } |
| |
| static void dwmac4_dma_init_tx_chan(struct stmmac_priv *priv, |
| void __iomem *ioaddr, |
| struct stmmac_dma_cfg *dma_cfg, |
| dma_addr_t dma_tx_phy, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value; |
| u32 txpbl = dma_cfg->txpbl ?: dma_cfg->pbl; |
| |
| value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| value = value | (txpbl << DMA_BUS_MODE_PBL_SHIFT); |
| |
| /* Enable OSP to get best performance */ |
| value |= DMA_CONTROL_OSP; |
| |
| writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| |
| if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame)) |
| writel(upper_32_bits(dma_tx_phy), |
| ioaddr + DMA_CHAN_TX_BASE_ADDR_HI(dwmac4_addrs, chan)); |
| |
| writel(lower_32_bits(dma_tx_phy), |
| ioaddr + DMA_CHAN_TX_BASE_ADDR(dwmac4_addrs, chan)); |
| } |
| |
| static void dwmac4_dma_init_channel(struct stmmac_priv *priv, |
| void __iomem *ioaddr, |
| struct stmmac_dma_cfg *dma_cfg, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value; |
| |
| /* common channel control register config */ |
| value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan)); |
| if (dma_cfg->pblx8) |
| value = value | DMA_BUS_MODE_PBL; |
| writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan)); |
| |
| /* Mask interrupts by writing to CSR7 */ |
| writel(DMA_CHAN_INTR_DEFAULT_MASK, |
| ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan)); |
| } |
| |
| static void dwmac410_dma_init_channel(struct stmmac_priv *priv, |
| void __iomem *ioaddr, |
| struct stmmac_dma_cfg *dma_cfg, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value; |
| |
| /* common channel control register config */ |
| value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan)); |
| if (dma_cfg->pblx8) |
| value = value | DMA_BUS_MODE_PBL; |
| |
| writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan)); |
| |
| /* Mask interrupts by writing to CSR7 */ |
| writel(DMA_CHAN_INTR_DEFAULT_MASK_4_10, |
| ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan)); |
| } |
| |
| static void dwmac4_dma_init(void __iomem *ioaddr, |
| struct stmmac_dma_cfg *dma_cfg, int atds) |
| { |
| u32 value = readl(ioaddr + DMA_SYS_BUS_MODE); |
| |
| /* Set the Fixed burst mode */ |
| if (dma_cfg->fixed_burst) |
| value |= DMA_SYS_BUS_FB; |
| |
| /* Mixed Burst has no effect when fb is set */ |
| if (dma_cfg->mixed_burst) |
| value |= DMA_SYS_BUS_MB; |
| |
| if (dma_cfg->aal) |
| value |= DMA_SYS_BUS_AAL; |
| |
| if (dma_cfg->eame) |
| value |= DMA_SYS_BUS_EAME; |
| |
| writel(value, ioaddr + DMA_SYS_BUS_MODE); |
| |
| value = readl(ioaddr + DMA_BUS_MODE); |
| |
| if (dma_cfg->multi_msi_en) { |
| value &= ~DMA_BUS_MODE_INTM_MASK; |
| value |= (DMA_BUS_MODE_INTM_MODE1 << DMA_BUS_MODE_INTM_SHIFT); |
| } |
| |
| if (dma_cfg->dche) |
| value |= DMA_BUS_MODE_DCHE; |
| |
| writel(value, ioaddr + DMA_BUS_MODE); |
| |
| } |
| |
| static void _dwmac4_dump_dma_regs(struct stmmac_priv *priv, |
| void __iomem *ioaddr, u32 channel, |
| u32 *reg_space) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| const struct dwmac4_addrs *default_addrs = NULL; |
| |
| /* Purposely save the registers in the "normal" layout, regardless of |
| * platform modifications, to keep reg_space size constant |
| */ |
| reg_space[DMA_CHAN_CONTROL(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_TX_CONTROL(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_RX_CONTROL(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_TX_BASE_ADDR(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_TX_BASE_ADDR(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_RX_BASE_ADDR(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_RX_BASE_ADDR(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_TX_END_ADDR(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_TX_END_ADDR(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_RX_END_ADDR(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_RX_END_ADDR(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_TX_RING_LEN(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_TX_RING_LEN(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_RX_RING_LEN(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_RX_RING_LEN(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_INTR_ENA(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_RX_WATCHDOG(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_RX_WATCHDOG(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_SLOT_CTRL_STATUS(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_SLOT_CTRL_STATUS(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_CUR_TX_DESC(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_CUR_TX_DESC(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_CUR_RX_DESC(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_CUR_RX_DESC(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_CUR_TX_BUF_ADDR(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_CUR_TX_BUF_ADDR(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_CUR_RX_BUF_ADDR(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_CUR_RX_BUF_ADDR(dwmac4_addrs, channel)); |
| reg_space[DMA_CHAN_STATUS(default_addrs, channel) / 4] = |
| readl(ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, channel)); |
| } |
| |
| static void dwmac4_dump_dma_regs(struct stmmac_priv *priv, void __iomem *ioaddr, |
| u32 *reg_space) |
| { |
| int i; |
| |
| for (i = 0; i < DMA_CHANNEL_NB_MAX; i++) |
| _dwmac4_dump_dma_regs(priv, ioaddr, i, reg_space); |
| } |
| |
| static void dwmac4_rx_watchdog(struct stmmac_priv *priv, void __iomem *ioaddr, |
| u32 riwt, u32 queue) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| |
| writel(riwt, ioaddr + DMA_CHAN_RX_WATCHDOG(dwmac4_addrs, queue)); |
| } |
| |
| static void dwmac4_dma_rx_chan_op_mode(struct stmmac_priv *priv, |
| void __iomem *ioaddr, int mode, |
| u32 channel, int fifosz, u8 qmode) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| unsigned int rqs = fifosz / 256 - 1; |
| u32 mtl_rx_op; |
| |
| mtl_rx_op = readl(ioaddr + MTL_CHAN_RX_OP_MODE(dwmac4_addrs, channel)); |
| |
| if (mode == SF_DMA_MODE) { |
| pr_debug("GMAC: enable RX store and forward mode\n"); |
| mtl_rx_op |= MTL_OP_MODE_RSF; |
| } else { |
| pr_debug("GMAC: disable RX SF mode (threshold %d)\n", mode); |
| mtl_rx_op &= ~MTL_OP_MODE_RSF; |
| mtl_rx_op &= MTL_OP_MODE_RTC_MASK; |
| if (mode <= 32) |
| mtl_rx_op |= MTL_OP_MODE_RTC_32; |
| else if (mode <= 64) |
| mtl_rx_op |= MTL_OP_MODE_RTC_64; |
| else if (mode <= 96) |
| mtl_rx_op |= MTL_OP_MODE_RTC_96; |
| else |
| mtl_rx_op |= MTL_OP_MODE_RTC_128; |
| } |
| |
| mtl_rx_op &= ~MTL_OP_MODE_RQS_MASK; |
| mtl_rx_op |= rqs << MTL_OP_MODE_RQS_SHIFT; |
| |
| /* Enable flow control only if each channel gets 4 KiB or more FIFO and |
| * only if channel is not an AVB channel. |
| */ |
| if ((fifosz >= 4096) && (qmode != MTL_QUEUE_AVB)) { |
| unsigned int rfd, rfa; |
| |
| mtl_rx_op |= MTL_OP_MODE_EHFC; |
| |
| /* Set Threshold for Activating Flow Control to min 2 frames, |
| * i.e. 1500 * 2 = 3000 bytes. |
| * |
| * Set Threshold for Deactivating Flow Control to min 1 frame, |
| * i.e. 1500 bytes. |
| */ |
| switch (fifosz) { |
| case 4096: |
| /* This violates the above formula because of FIFO size |
| * limit therefore overflow may occur in spite of this. |
| */ |
| rfd = 0x03; /* Full-2.5K */ |
| rfa = 0x01; /* Full-1.5K */ |
| break; |
| |
| default: |
| rfd = 0x07; /* Full-4.5K */ |
| rfa = 0x04; /* Full-3K */ |
| break; |
| } |
| |
| mtl_rx_op &= ~MTL_OP_MODE_RFD_MASK; |
| mtl_rx_op |= rfd << MTL_OP_MODE_RFD_SHIFT; |
| |
| mtl_rx_op &= ~MTL_OP_MODE_RFA_MASK; |
| mtl_rx_op |= rfa << MTL_OP_MODE_RFA_SHIFT; |
| } |
| |
| writel(mtl_rx_op, ioaddr + MTL_CHAN_RX_OP_MODE(dwmac4_addrs, channel)); |
| } |
| |
| static void dwmac4_dma_tx_chan_op_mode(struct stmmac_priv *priv, |
| void __iomem *ioaddr, int mode, |
| u32 channel, int fifosz, u8 qmode) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs, |
| channel)); |
| unsigned int tqs = fifosz / 256 - 1; |
| |
| if (mode == SF_DMA_MODE) { |
| pr_debug("GMAC: enable TX store and forward mode\n"); |
| /* Transmit COE type 2 cannot be done in cut-through mode. */ |
| mtl_tx_op |= MTL_OP_MODE_TSF; |
| } else { |
| pr_debug("GMAC: disabling TX SF (threshold %d)\n", mode); |
| mtl_tx_op &= ~MTL_OP_MODE_TSF; |
| mtl_tx_op &= MTL_OP_MODE_TTC_MASK; |
| /* Set the transmit threshold */ |
| if (mode <= 32) |
| mtl_tx_op |= MTL_OP_MODE_TTC_32; |
| else if (mode <= 64) |
| mtl_tx_op |= MTL_OP_MODE_TTC_64; |
| else if (mode <= 96) |
| mtl_tx_op |= MTL_OP_MODE_TTC_96; |
| else if (mode <= 128) |
| mtl_tx_op |= MTL_OP_MODE_TTC_128; |
| else if (mode <= 192) |
| mtl_tx_op |= MTL_OP_MODE_TTC_192; |
| else if (mode <= 256) |
| mtl_tx_op |= MTL_OP_MODE_TTC_256; |
| else if (mode <= 384) |
| mtl_tx_op |= MTL_OP_MODE_TTC_384; |
| else |
| mtl_tx_op |= MTL_OP_MODE_TTC_512; |
| } |
| /* For an IP with DWC_EQOS_NUM_TXQ == 1, the fields TXQEN and TQS are RO |
| * with reset values: TXQEN on, TQS == DWC_EQOS_TXFIFO_SIZE. |
| * For an IP with DWC_EQOS_NUM_TXQ > 1, the fields TXQEN and TQS are R/W |
| * with reset values: TXQEN off, TQS 256 bytes. |
| * |
| * TXQEN must be written for multi-channel operation and TQS must |
| * reflect the available fifo size per queue (total fifo size / number |
| * of enabled queues). |
| */ |
| mtl_tx_op &= ~MTL_OP_MODE_TXQEN_MASK; |
| if (qmode != MTL_QUEUE_AVB) |
| mtl_tx_op |= MTL_OP_MODE_TXQEN; |
| else |
| mtl_tx_op |= MTL_OP_MODE_TXQEN_AV; |
| mtl_tx_op &= ~MTL_OP_MODE_TQS_MASK; |
| mtl_tx_op |= tqs << MTL_OP_MODE_TQS_SHIFT; |
| |
| writel(mtl_tx_op, ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs, channel)); |
| } |
| |
| static int dwmac4_get_hw_feature(void __iomem *ioaddr, |
| struct dma_features *dma_cap) |
| { |
| u32 hw_cap = readl(ioaddr + GMAC_HW_FEATURE0); |
| |
| /* MAC HW feature0 */ |
| dma_cap->mbps_10_100 = (hw_cap & GMAC_HW_FEAT_MIISEL); |
| dma_cap->mbps_1000 = (hw_cap & GMAC_HW_FEAT_GMIISEL) >> 1; |
| dma_cap->half_duplex = (hw_cap & GMAC_HW_FEAT_HDSEL) >> 2; |
| dma_cap->vlhash = (hw_cap & GMAC_HW_FEAT_VLHASH) >> 4; |
| dma_cap->multi_addr = (hw_cap & GMAC_HW_FEAT_ADDMAC) >> 18; |
| dma_cap->pcs = (hw_cap & GMAC_HW_FEAT_PCSSEL) >> 3; |
| dma_cap->sma_mdio = (hw_cap & GMAC_HW_FEAT_SMASEL) >> 5; |
| dma_cap->pmt_remote_wake_up = (hw_cap & GMAC_HW_FEAT_RWKSEL) >> 6; |
| dma_cap->pmt_magic_frame = (hw_cap & GMAC_HW_FEAT_MGKSEL) >> 7; |
| /* MMC */ |
| dma_cap->rmon = (hw_cap & GMAC_HW_FEAT_MMCSEL) >> 8; |
| /* IEEE 1588-2008 */ |
| dma_cap->atime_stamp = (hw_cap & GMAC_HW_FEAT_TSSEL) >> 12; |
| /* 802.3az - Energy-Efficient Ethernet (EEE) */ |
| dma_cap->eee = (hw_cap & GMAC_HW_FEAT_EEESEL) >> 13; |
| /* TX and RX csum */ |
| dma_cap->tx_coe = (hw_cap & GMAC_HW_FEAT_TXCOSEL) >> 14; |
| dma_cap->rx_coe = (hw_cap & GMAC_HW_FEAT_RXCOESEL) >> 16; |
| dma_cap->vlins = (hw_cap & GMAC_HW_FEAT_SAVLANINS) >> 27; |
| dma_cap->arpoffsel = (hw_cap & GMAC_HW_FEAT_ARPOFFSEL) >> 9; |
| |
| /* MAC HW feature1 */ |
| hw_cap = readl(ioaddr + GMAC_HW_FEATURE1); |
| dma_cap->l3l4fnum = (hw_cap & GMAC_HW_FEAT_L3L4FNUM) >> 27; |
| dma_cap->hash_tb_sz = (hw_cap & GMAC_HW_HASH_TB_SZ) >> 24; |
| dma_cap->av = (hw_cap & GMAC_HW_FEAT_AVSEL) >> 20; |
| dma_cap->tsoen = (hw_cap & GMAC_HW_TSOEN) >> 18; |
| dma_cap->sphen = (hw_cap & GMAC_HW_FEAT_SPHEN) >> 17; |
| |
| dma_cap->addr64 = (hw_cap & GMAC_HW_ADDR64) >> 14; |
| switch (dma_cap->addr64) { |
| case 0: |
| dma_cap->addr64 = 32; |
| break; |
| case 1: |
| dma_cap->addr64 = 40; |
| break; |
| case 2: |
| dma_cap->addr64 = 48; |
| break; |
| default: |
| dma_cap->addr64 = 32; |
| break; |
| } |
| |
| /* RX and TX FIFO sizes are encoded as log2(n / 128). Undo that by |
| * shifting and store the sizes in bytes. |
| */ |
| dma_cap->tx_fifo_size = 128 << ((hw_cap & GMAC_HW_TXFIFOSIZE) >> 6); |
| dma_cap->rx_fifo_size = 128 << ((hw_cap & GMAC_HW_RXFIFOSIZE) >> 0); |
| /* MAC HW feature2 */ |
| hw_cap = readl(ioaddr + GMAC_HW_FEATURE2); |
| /* TX and RX number of channels */ |
| dma_cap->number_rx_channel = |
| ((hw_cap & GMAC_HW_FEAT_RXCHCNT) >> 12) + 1; |
| dma_cap->number_tx_channel = |
| ((hw_cap & GMAC_HW_FEAT_TXCHCNT) >> 18) + 1; |
| /* TX and RX number of queues */ |
| dma_cap->number_rx_queues = |
| ((hw_cap & GMAC_HW_FEAT_RXQCNT) >> 0) + 1; |
| dma_cap->number_tx_queues = |
| ((hw_cap & GMAC_HW_FEAT_TXQCNT) >> 6) + 1; |
| /* PPS output */ |
| dma_cap->pps_out_num = (hw_cap & GMAC_HW_FEAT_PPSOUTNUM) >> 24; |
| |
| /* IEEE 1588-2002 */ |
| dma_cap->time_stamp = 0; |
| /* Number of Auxiliary Snapshot Inputs */ |
| dma_cap->aux_snapshot_n = (hw_cap & GMAC_HW_FEAT_AUXSNAPNUM) >> 28; |
| |
| /* MAC HW feature3 */ |
| hw_cap = readl(ioaddr + GMAC_HW_FEATURE3); |
| |
| /* 5.10 Features */ |
| dma_cap->asp = (hw_cap & GMAC_HW_FEAT_ASP) >> 28; |
| dma_cap->tbssel = (hw_cap & GMAC_HW_FEAT_TBSSEL) >> 27; |
| dma_cap->fpesel = (hw_cap & GMAC_HW_FEAT_FPESEL) >> 26; |
| dma_cap->estwid = (hw_cap & GMAC_HW_FEAT_ESTWID) >> 20; |
| dma_cap->estdep = (hw_cap & GMAC_HW_FEAT_ESTDEP) >> 17; |
| dma_cap->estsel = (hw_cap & GMAC_HW_FEAT_ESTSEL) >> 16; |
| dma_cap->frpes = (hw_cap & GMAC_HW_FEAT_FRPES) >> 13; |
| dma_cap->frpbs = (hw_cap & GMAC_HW_FEAT_FRPBS) >> 11; |
| dma_cap->frpsel = (hw_cap & GMAC_HW_FEAT_FRPSEL) >> 10; |
| dma_cap->dvlan = (hw_cap & GMAC_HW_FEAT_DVLAN) >> 5; |
| |
| return 0; |
| } |
| |
| /* Enable/disable TSO feature and set MSS */ |
| static void dwmac4_enable_tso(struct stmmac_priv *priv, void __iomem *ioaddr, |
| bool en, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value; |
| |
| if (en) { |
| /* enable TSO */ |
| value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| writel(value | DMA_CONTROL_TSE, |
| ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| } else { |
| /* enable TSO */ |
| value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| writel(value & ~DMA_CONTROL_TSE, |
| ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| } |
| } |
| |
| static void dwmac4_qmode(struct stmmac_priv *priv, void __iomem *ioaddr, |
| u32 channel, u8 qmode) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs, |
| channel)); |
| |
| mtl_tx_op &= ~MTL_OP_MODE_TXQEN_MASK; |
| if (qmode != MTL_QUEUE_AVB) |
| mtl_tx_op |= MTL_OP_MODE_TXQEN; |
| else |
| mtl_tx_op |= MTL_OP_MODE_TXQEN_AV; |
| |
| writel(mtl_tx_op, ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs, channel)); |
| } |
| |
| static void dwmac4_set_bfsize(struct stmmac_priv *priv, void __iomem *ioaddr, |
| int bfsize, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan)); |
| |
| value &= ~DMA_RBSZ_MASK; |
| value |= (bfsize << DMA_RBSZ_SHIFT) & DMA_RBSZ_MASK; |
| |
| writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan)); |
| } |
| |
| static void dwmac4_enable_sph(struct stmmac_priv *priv, void __iomem *ioaddr, |
| bool en, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value = readl(ioaddr + GMAC_EXT_CONFIG); |
| |
| value &= ~GMAC_CONFIG_HDSMS; |
| value |= GMAC_CONFIG_HDSMS_256; /* Segment max 256 bytes */ |
| writel(value, ioaddr + GMAC_EXT_CONFIG); |
| |
| value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan)); |
| if (en) |
| value |= DMA_CONTROL_SPH; |
| else |
| value &= ~DMA_CONTROL_SPH; |
| writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan)); |
| } |
| |
| static int dwmac4_enable_tbs(struct stmmac_priv *priv, void __iomem *ioaddr, |
| bool en, u32 chan) |
| { |
| const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs; |
| u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| |
| if (en) |
| value |= DMA_CONTROL_EDSE; |
| else |
| value &= ~DMA_CONTROL_EDSE; |
| |
| writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan)); |
| |
| value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, |
| chan)) & DMA_CONTROL_EDSE; |
| if (en && !value) |
| return -EIO; |
| |
| writel(DMA_TBS_DEF_FTOS, ioaddr + DMA_TBS_CTRL); |
| return 0; |
| } |
| |
| const struct stmmac_dma_ops dwmac4_dma_ops = { |
| .reset = dwmac4_dma_reset, |
| .init = dwmac4_dma_init, |
| .init_chan = dwmac4_dma_init_channel, |
| .init_rx_chan = dwmac4_dma_init_rx_chan, |
| .init_tx_chan = dwmac4_dma_init_tx_chan, |
| .axi = dwmac4_dma_axi, |
| .dump_regs = dwmac4_dump_dma_regs, |
| .dma_rx_mode = dwmac4_dma_rx_chan_op_mode, |
| .dma_tx_mode = dwmac4_dma_tx_chan_op_mode, |
| .enable_dma_irq = dwmac4_enable_dma_irq, |
| .disable_dma_irq = dwmac4_disable_dma_irq, |
| .start_tx = dwmac4_dma_start_tx, |
| .stop_tx = dwmac4_dma_stop_tx, |
| .start_rx = dwmac4_dma_start_rx, |
| .stop_rx = dwmac4_dma_stop_rx, |
| .dma_interrupt = dwmac4_dma_interrupt, |
| .get_hw_feature = dwmac4_get_hw_feature, |
| .rx_watchdog = dwmac4_rx_watchdog, |
| .set_rx_ring_len = dwmac4_set_rx_ring_len, |
| .set_tx_ring_len = dwmac4_set_tx_ring_len, |
| .set_rx_tail_ptr = dwmac4_set_rx_tail_ptr, |
| .set_tx_tail_ptr = dwmac4_set_tx_tail_ptr, |
| .enable_tso = dwmac4_enable_tso, |
| .qmode = dwmac4_qmode, |
| .set_bfsize = dwmac4_set_bfsize, |
| .enable_sph = dwmac4_enable_sph, |
| }; |
| |
| const struct stmmac_dma_ops dwmac410_dma_ops = { |
| .reset = dwmac4_dma_reset, |
| .init = dwmac4_dma_init, |
| .init_chan = dwmac410_dma_init_channel, |
| .init_rx_chan = dwmac4_dma_init_rx_chan, |
| .init_tx_chan = dwmac4_dma_init_tx_chan, |
| .axi = dwmac4_dma_axi, |
| .dump_regs = dwmac4_dump_dma_regs, |
| .dma_rx_mode = dwmac4_dma_rx_chan_op_mode, |
| .dma_tx_mode = dwmac4_dma_tx_chan_op_mode, |
| .enable_dma_irq = dwmac410_enable_dma_irq, |
| .disable_dma_irq = dwmac4_disable_dma_irq, |
| .start_tx = dwmac4_dma_start_tx, |
| .stop_tx = dwmac4_dma_stop_tx, |
| .start_rx = dwmac4_dma_start_rx, |
| .stop_rx = dwmac4_dma_stop_rx, |
| .dma_interrupt = dwmac4_dma_interrupt, |
| .get_hw_feature = dwmac4_get_hw_feature, |
| .rx_watchdog = dwmac4_rx_watchdog, |
| .set_rx_ring_len = dwmac4_set_rx_ring_len, |
| .set_tx_ring_len = dwmac4_set_tx_ring_len, |
| .set_rx_tail_ptr = dwmac4_set_rx_tail_ptr, |
| .set_tx_tail_ptr = dwmac4_set_tx_tail_ptr, |
| .enable_tso = dwmac4_enable_tso, |
| .qmode = dwmac4_qmode, |
| .set_bfsize = dwmac4_set_bfsize, |
| .enable_sph = dwmac4_enable_sph, |
| .enable_tbs = dwmac4_enable_tbs, |
| }; |
