1/* SPDX-License-Identifier: GPL-2.0-only */ 2/******************************************************************************* 3 DWMAC DMA Header file. 4 5 Copyright (C) 2007-2009 STMicroelectronics Ltd 6 7 8 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> 9*******************************************************************************/ 10 11#ifndef __DWMAC_DMA_H__ 12#define __DWMAC_DMA_H__ 13 14/* DMA CRS Control and Status Register Mapping */ 15#define DMA_BUS_MODE 0x00001000 /* Bus Mode */ 16#define DMA_XMT_POLL_DEMAND 0x00001004 /* Transmit Poll Demand */ 17#define DMA_RCV_POLL_DEMAND 0x00001008 /* Received Poll Demand */ 18#define DMA_RCV_BASE_ADDR 0x0000100c /* Receive List Base */ 19#define DMA_TX_BASE_ADDR 0x00001010 /* Transmit List Base */ 20#define DMA_STATUS 0x00001014 /* Status Register */ 21#define DMA_CONTROL 0x00001018 /* Ctrl (Operational Mode) */ 22#define DMA_INTR_ENA 0x0000101c /* Interrupt Enable */ 23#define DMA_MISSED_FRAME_CTR 0x00001020 /* Missed Frame Counter */ 24 25/* SW Reset */ 26#define DMA_BUS_MODE_SFT_RESET 0x00000001 /* Software Reset */ 27 28/* Rx watchdog register */ 29#define DMA_RX_WATCHDOG 0x00001024 30 31/* AXI Master Bus Mode */ 32#define DMA_AXI_BUS_MODE 0x00001028 33 34#define DMA_AXI_EN_LPI BIT(31) 35#define DMA_AXI_LPI_XIT_FRM BIT(30) 36#define DMA_AXI_WR_OSR_LMT GENMASK(23, 20) 37#define DMA_AXI_WR_OSR_LMT_SHIFT 20 38#define DMA_AXI_WR_OSR_LMT_MASK 0xf 39#define DMA_AXI_RD_OSR_LMT GENMASK(19, 16) 40#define DMA_AXI_RD_OSR_LMT_SHIFT 16 41#define DMA_AXI_RD_OSR_LMT_MASK 0xf 42 43#define DMA_AXI_OSR_MAX 0xf 44#define DMA_AXI_MAX_OSR_LIMIT ((DMA_AXI_OSR_MAX << DMA_AXI_WR_OSR_LMT_SHIFT) | \ 45 (DMA_AXI_OSR_MAX << DMA_AXI_RD_OSR_LMT_SHIFT)) 46#define DMA_AXI_1KBBE BIT(13) 47#define DMA_AXI_AAL BIT(12) 48#define DMA_AXI_BLEN256 BIT(7) 49#define DMA_AXI_BLEN128 BIT(6) 50#define DMA_AXI_BLEN64 BIT(5) 51#define DMA_AXI_BLEN32 BIT(4) 52#define DMA_AXI_BLEN16 BIT(3) 53#define DMA_AXI_BLEN8 BIT(2) 54#define DMA_AXI_BLEN4 BIT(1) 55#define DMA_BURST_LEN_DEFAULT (DMA_AXI_BLEN256 | DMA_AXI_BLEN128 | \ 56 DMA_AXI_BLEN64 | DMA_AXI_BLEN32 | \ 57 DMA_AXI_BLEN16 | DMA_AXI_BLEN8 | \ 58 DMA_AXI_BLEN4) 59 60#define DMA_AXI_UNDEF BIT(0) 61 62#define DMA_AXI_BURST_LEN_MASK 0x000000FE 63 64#define DMA_CUR_TX_BUF_ADDR 0x00001050 /* Current Host Tx Buffer */ 65#define DMA_CUR_RX_BUF_ADDR 0x00001054 /* Current Host Rx Buffer */ 66#define DMA_HW_FEATURE 0x00001058 /* HW Feature Register */ 67 68/* DMA Control register defines */ 69#define DMA_CONTROL_ST 0x00002000 /* Start/Stop Transmission */ 70#define DMA_CONTROL_SR 0x00000002 /* Start/Stop Receive */ 71 72/* DMA Normal interrupt */ 73#define DMA_INTR_ENA_NIE 0x00010000 /* Normal Summary */ 74#define DMA_INTR_ENA_TIE 0x00000001 /* Transmit Interrupt */ 75#define DMA_INTR_ENA_TUE 0x00000004 /* Transmit Buffer Unavailable */ 76#define DMA_INTR_ENA_RIE 0x00000040 /* Receive Interrupt */ 77#define DMA_INTR_ENA_ERE 0x00004000 /* Early Receive */ 78 79#define DMA_INTR_NORMAL (DMA_INTR_ENA_NIE | DMA_INTR_ENA_RIE | \ 80 DMA_INTR_ENA_TIE) 81 82/* DMA Abnormal interrupt */ 83#define DMA_INTR_ENA_AIE 0x00008000 /* Abnormal Summary */ 84#define DMA_INTR_ENA_FBE 0x00002000 /* Fatal Bus Error */ 85#define DMA_INTR_ENA_ETE 0x00000400 /* Early Transmit */ 86#define DMA_INTR_ENA_RWE 0x00000200 /* Receive Watchdog */ 87#define DMA_INTR_ENA_RSE 0x00000100 /* Receive Stopped */ 88#define DMA_INTR_ENA_RUE 0x00000080 /* Receive Buffer Unavailable */ 89#define DMA_INTR_ENA_UNE 0x00000020 /* Tx Underflow */ 90#define DMA_INTR_ENA_OVE 0x00000010 /* Receive Overflow */ 91#define DMA_INTR_ENA_TJE 0x00000008 /* Transmit Jabber */ 92#define DMA_INTR_ENA_TSE 0x00000002 /* Transmit Stopped */ 93 94#define DMA_INTR_ABNORMAL (DMA_INTR_ENA_AIE | DMA_INTR_ENA_FBE | \ 95 DMA_INTR_ENA_UNE) 96 97/* DMA default interrupt mask */ 98#define DMA_INTR_DEFAULT_MASK (DMA_INTR_NORMAL | DMA_INTR_ABNORMAL) 99#define DMA_INTR_DEFAULT_RX (DMA_INTR_ENA_RIE) 100#define DMA_INTR_DEFAULT_TX (DMA_INTR_ENA_TIE) 101 102/* DMA Status register defines */ 103#define DMA_STATUS_GLPII 0x40000000 /* GMAC LPI interrupt */ 104#define DMA_STATUS_GPI 0x10000000 /* PMT interrupt */ 105#define DMA_STATUS_GMI 0x08000000 /* MMC interrupt */ 106#define DMA_STATUS_GLI 0x04000000 /* GMAC Line interface int */ 107#define DMA_STATUS_EB_MASK 0x00380000 /* Error Bits Mask */ 108#define DMA_STATUS_EB_TX_ABORT 0x00080000 /* Error Bits - TX Abort */ 109#define DMA_STATUS_EB_RX_ABORT 0x00100000 /* Error Bits - RX Abort */ 110#define DMA_STATUS_TS_MASK 0x00700000 /* Transmit Process State */ 111#define DMA_STATUS_TS_SHIFT 20 112#define DMA_STATUS_RS_MASK 0x000e0000 /* Receive Process State */ 113#define DMA_STATUS_RS_SHIFT 17 114#define DMA_STATUS_NIS 0x00010000 /* Normal Interrupt Summary */ 115#define DMA_STATUS_AIS 0x00008000 /* Abnormal Interrupt Summary */ 116#define DMA_STATUS_ERI 0x00004000 /* Early Receive Interrupt */ 117#define DMA_STATUS_FBI 0x00002000 /* Fatal Bus Error Interrupt */ 118#define DMA_STATUS_ETI 0x00000400 /* Early Transmit Interrupt */ 119#define DMA_STATUS_RWT 0x00000200 /* Receive Watchdog Timeout */ 120#define DMA_STATUS_RPS 0x00000100 /* Receive Process Stopped */ 121#define DMA_STATUS_RU 0x00000080 /* Receive Buffer Unavailable */ 122#define DMA_STATUS_RI 0x00000040 /* Receive Interrupt */ 123#define DMA_STATUS_UNF 0x00000020 /* Transmit Underflow */ 124#define DMA_STATUS_OVF 0x00000010 /* Receive Overflow */ 125#define DMA_STATUS_TJT 0x00000008 /* Transmit Jabber Timeout */ 126#define DMA_STATUS_TU 0x00000004 /* Transmit Buffer Unavailable */ 127#define DMA_STATUS_TPS 0x00000002 /* Transmit Process Stopped */ 128#define DMA_STATUS_TI 0x00000001 /* Transmit Interrupt */ 129#define DMA_CONTROL_FTF 0x00100000 /* Flush transmit FIFO */ 130 131#define DMA_STATUS_MSK_COMMON (DMA_STATUS_NIS | \ 132 DMA_STATUS_AIS | \ 133 DMA_STATUS_FBI) 134 135#define DMA_STATUS_MSK_RX (DMA_STATUS_ERI | \ 136 DMA_STATUS_RWT | \ 137 DMA_STATUS_RPS | \ 138 DMA_STATUS_RU | \ 139 DMA_STATUS_RI | \ 140 DMA_STATUS_OVF | \ 141 DMA_STATUS_MSK_COMMON) 142 143#define DMA_STATUS_MSK_TX (DMA_STATUS_ETI | \ 144 DMA_STATUS_UNF | \ 145 DMA_STATUS_TJT | \ 146 DMA_STATUS_TU | \ 147 DMA_STATUS_TPS | \ 148 DMA_STATUS_TI | \ 149 DMA_STATUS_MSK_COMMON) 150 151#define NUM_DWMAC100_DMA_REGS 9 152#define NUM_DWMAC1000_DMA_REGS 23 153#define NUM_DWMAC4_DMA_REGS 27 154 155void dwmac_enable_dma_transmission(void __iomem *ioaddr); 156void dwmac_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr, 157 u32 chan, bool rx, bool tx); 158void dwmac_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr, 159 u32 chan, bool rx, bool tx); 160void dwmac_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr, 161 u32 chan); 162void dwmac_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr, 163 u32 chan); 164void dwmac_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr, 165 u32 chan); 166void dwmac_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr, 167 u32 chan); 168int dwmac_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr, 169 struct stmmac_extra_stats *x, u32 chan, u32 dir); 170int dwmac_dma_reset(void __iomem *ioaddr); 171 172#endif /* __DWMAC_DMA_H__ */ 173