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/*
* DWMAC4 DMA Header file.
*
*
* Copyright (C) 2007-2015 STMicroelectronics Ltd
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* Author: Alexandre Torgue <alexandre.torgue@st.com>
*/
#ifndef __DWMAC4_DMA_H__
#define __DWMAC4_DMA_H__
/* Define the max channel number used for tx (also rx).
* dwmac4 accepts up to 8 channels for TX (and also 8 channels for RX
*/
#define DMA_CHANNEL_NB_MAX 1
#define DMA_BUS_MODE 0x00001000
#define DMA_SYS_BUS_MODE 0x00001004
#define DMA_STATUS 0x00001008
#define DMA_DEBUG_STATUS_0 0x0000100c
#define DMA_DEBUG_STATUS_1 0x00001010
#define DMA_DEBUG_STATUS_2 0x00001014
#define DMA_AXI_BUS_MODE 0x00001028
/* DMA Bus Mode bitmap */
#define DMA_BUS_MODE_SFT_RESET BIT(0)
/* DMA SYS Bus Mode bitmap */
#define DMA_BUS_MODE_SPH BIT(24)
#define DMA_BUS_MODE_PBL BIT(16)
#define DMA_BUS_MODE_PBL_SHIFT 16
#define DMA_BUS_MODE_RPBL_SHIFT 16
#define DMA_BUS_MODE_MB BIT(14)
#define DMA_BUS_MODE_FB BIT(0)
/* DMA Interrupt top status */
#define DMA_STATUS_MAC BIT(17)
#define DMA_STATUS_MTL BIT(16)
#define DMA_STATUS_CHAN7 BIT(7)
#define DMA_STATUS_CHAN6 BIT(6)
#define DMA_STATUS_CHAN5 BIT(5)
#define DMA_STATUS_CHAN4 BIT(4)
#define DMA_STATUS_CHAN3 BIT(3)
#define DMA_STATUS_CHAN2 BIT(2)
#define DMA_STATUS_CHAN1 BIT(1)
#define DMA_STATUS_CHAN0 BIT(0)
/* DMA debug status bitmap */
#define DMA_DEBUG_STATUS_TS_MASK 0xf
#define DMA_DEBUG_STATUS_RS_MASK 0xf
/* DMA AXI bitmap */
#define DMA_AXI_EN_LPI BIT(31)
#define DMA_AXI_LPI_XIT_FRM BIT(30)
#define DMA_AXI_WR_OSR_LMT GENMASK(27, 24)
#define DMA_AXI_WR_OSR_LMT_SHIFT 24
#define DMA_AXI_RD_OSR_LMT GENMASK(19, 16)
#define DMA_AXI_RD_OSR_LMT_SHIFT 16
#define DMA_AXI_OSR_MAX 0xf
#define DMA_AXI_MAX_OSR_LIMIT ((DMA_AXI_OSR_MAX << DMA_AXI_WR_OSR_LMT_SHIFT) | \
(DMA_AXI_OSR_MAX << DMA_AXI_RD_OSR_LMT_SHIFT))
#define DMA_SYS_BUS_MB BIT(14)
#define DMA_AXI_1KBBE BIT(13)
#define DMA_SYS_BUS_AAL BIT(12)
#define DMA_AXI_BLEN256 BIT(7)
#define DMA_AXI_BLEN128 BIT(6)
#define DMA_AXI_BLEN64 BIT(5)
#define DMA_AXI_BLEN32 BIT(4)
#define DMA_AXI_BLEN16 BIT(3)
#define DMA_AXI_BLEN8 BIT(2)
#define DMA_AXI_BLEN4 BIT(1)
#define DMA_SYS_BUS_FB BIT(0)
#define DMA_BURST_LEN_DEFAULT (DMA_AXI_BLEN256 | DMA_AXI_BLEN128 | \
DMA_AXI_BLEN64 | DMA_AXI_BLEN32 | \
DMA_AXI_BLEN16 | DMA_AXI_BLEN8 | \
DMA_AXI_BLEN4)
#define DMA_AXI_BURST_LEN_MASK 0x000000FE
/* Following DMA defines are chanels oriented */
#define DMA_CHAN_BASE_ADDR 0x00001100
#define DMA_CHAN_BASE_OFFSET 0x80
#define DMA_CHANX_BASE_ADDR(x) (DMA_CHAN_BASE_ADDR + \
(x * DMA_CHAN_BASE_OFFSET))
#define DMA_CHAN_REG_NUMBER 17
#define DMA_CHAN_CONTROL(x) DMA_CHANX_BASE_ADDR(x)
#define DMA_CHAN_TX_CONTROL(x) (DMA_CHANX_BASE_ADDR(x) + 0x4)
#define DMA_CHAN_RX_CONTROL(x) (DMA_CHANX_BASE_ADDR(x) + 0x8)
#define DMA_CHAN_TX_BASE_ADDR(x) (DMA_CHANX_BASE_ADDR(x) + 0x14)
#define DMA_CHAN_RX_BASE_ADDR(x) (DMA_CHANX_BASE_ADDR(x) + 0x1c)
#define DMA_CHAN_TX_END_ADDR(x) (DMA_CHANX_BASE_ADDR(x) + 0x20)
#define DMA_CHAN_RX_END_ADDR(x) (DMA_CHANX_BASE_ADDR(x) + 0x28)
#define DMA_CHAN_TX_RING_LEN(x) (DMA_CHANX_BASE_ADDR(x) + 0x2c)
#define DMA_CHAN_RX_RING_LEN(x) (DMA_CHANX_BASE_ADDR(x) + 0x30)
#define DMA_CHAN_INTR_ENA(x) (DMA_CHANX_BASE_ADDR(x) + 0x34)
#define DMA_CHAN_RX_WATCHDOG(x) (DMA_CHANX_BASE_ADDR(x) + 0x38)
#define DMA_CHAN_SLOT_CTRL_STATUS(x) (DMA_CHANX_BASE_ADDR(x) + 0x3c)
#define DMA_CHAN_CUR_TX_DESC(x) (DMA_CHANX_BASE_ADDR(x) + 0x44)
#define DMA_CHAN_CUR_RX_DESC(x) (DMA_CHANX_BASE_ADDR(x) + 0x4c)
#define DMA_CHAN_CUR_TX_BUF_ADDR(x) (DMA_CHANX_BASE_ADDR(x) + 0x54)
#define DMA_CHAN_CUR_RX_BUF_ADDR(x) (DMA_CHANX_BASE_ADDR(x) + 0x5c)
#define DMA_CHAN_STATUS(x) (DMA_CHANX_BASE_ADDR(x) + 0x60)
/* DMA Control X */
#define DMA_CONTROL_MSS_MASK GENMASK(13, 0)
/* DMA Tx Channel X Control register defines */
#define DMA_CONTROL_TSE BIT(12)
#define DMA_CONTROL_OSP BIT(4)
#define DMA_CONTROL_ST BIT(0)
/* DMA Rx Channel X Control register defines */
#define DMA_CONTROL_SR BIT(0)
/* Interrupt status per channel */
#define DMA_CHAN_STATUS_REB GENMASK(21, 19)
#define DMA_CHAN_STATUS_REB_SHIFT 19
#define DMA_CHAN_STATUS_TEB GENMASK(18, 16)
#define DMA_CHAN_STATUS_TEB_SHIFT 16
#define DMA_CHAN_STATUS_NIS BIT(15)
#define DMA_CHAN_STATUS_AIS BIT(14)
#define DMA_CHAN_STATUS_CDE BIT(13)
#define DMA_CHAN_STATUS_FBE BIT(12)
#define DMA_CHAN_STATUS_ERI BIT(11)
#define DMA_CHAN_STATUS_ETI BIT(10)
#define DMA_CHAN_STATUS_RWT BIT(9)
#define DMA_CHAN_STATUS_RPS BIT(8)
#define DMA_CHAN_STATUS_RBU BIT(7)
#define DMA_CHAN_STATUS_RI BIT(6)
#define DMA_CHAN_STATUS_TBU BIT(2)
#define DMA_CHAN_STATUS_TPS BIT(1)
#define DMA_CHAN_STATUS_TI BIT(0)
/* Interrupt enable bits per channel */
#define DMA_CHAN_INTR_ENA_NIE BIT(16)
#define DMA_CHAN_INTR_ENA_AIE BIT(15)
#define DMA_CHAN_INTR_ENA_NIE_4_10 BIT(15)
#define DMA_CHAN_INTR_ENA_AIE_4_10 BIT(14)
#define DMA_CHAN_INTR_ENA_CDE BIT(13)
#define DMA_CHAN_INTR_ENA_FBE BIT(12)
#define DMA_CHAN_INTR_ENA_ERE BIT(11)
#define DMA_CHAN_INTR_ENA_ETE BIT(10)
#define DMA_CHAN_INTR_ENA_RWE BIT(9)
#define DMA_CHAN_INTR_ENA_RSE BIT(8)
#define DMA_CHAN_INTR_ENA_RBUE BIT(7)
#define DMA_CHAN_INTR_ENA_RIE BIT(6)
#define DMA_CHAN_INTR_ENA_TBUE BIT(2)
#define DMA_CHAN_INTR_ENA_TSE BIT(1)
#define DMA_CHAN_INTR_ENA_TIE BIT(0)
#define DMA_CHAN_INTR_NORMAL (DMA_CHAN_INTR_ENA_NIE | \
DMA_CHAN_INTR_ENA_RIE | \
DMA_CHAN_INTR_ENA_TIE)
#define DMA_CHAN_INTR_ABNORMAL (DMA_CHAN_INTR_ENA_AIE | \
DMA_CHAN_INTR_ENA_FBE)
/* DMA default interrupt mask for 4.00 */
#define DMA_CHAN_INTR_DEFAULT_MASK (DMA_CHAN_INTR_NORMAL | \
DMA_CHAN_INTR_ABNORMAL)
#define DMA_CHAN_INTR_NORMAL_4_10 (DMA_CHAN_INTR_ENA_NIE_4_10 | \
DMA_CHAN_INTR_ENA_RIE | \
DMA_CHAN_INTR_ENA_TIE)
#define DMA_CHAN_INTR_ABNORMAL_4_10 (DMA_CHAN_INTR_ENA_AIE_4_10 | \
DMA_CHAN_INTR_ENA_FBE)
/* DMA default interrupt mask for 4.10a */
#define DMA_CHAN_INTR_DEFAULT_MASK_4_10 (DMA_CHAN_INTR_NORMAL_4_10 | \
DMA_CHAN_INTR_ABNORMAL_4_10)
/* channel 0 specific fields */
#define DMA_CHAN0_DBG_STAT_TPS GENMASK(15, 12)
#define DMA_CHAN0_DBG_STAT_TPS_SHIFT 12
#define DMA_CHAN0_DBG_STAT_RPS GENMASK(11, 8)
#define DMA_CHAN0_DBG_STAT_RPS_SHIFT 8
int dwmac4_dma_reset(void __iomem *ioaddr);
void dwmac4_enable_dma_transmission(void __iomem *ioaddr, u32 tail_ptr);
void dwmac4_enable_dma_irq(void __iomem *ioaddr, u32 chan);
void dwmac410_enable_dma_irq(void __iomem *ioaddr, u32 chan);
void dwmac4_disable_dma_irq(void __iomem *ioaddr, u32 chan);
void dwmac4_dma_start_tx(void __iomem *ioaddr);
void dwmac4_dma_stop_tx(void __iomem *ioaddr);
void dwmac4_dma_start_rx(void __iomem *ioaddr);
void dwmac4_dma_stop_rx(void __iomem *ioaddr);
int dwmac4_dma_interrupt(void __iomem *ioaddr,
struct stmmac_extra_stats *x);
void dwmac4_set_rx_ring_len(void __iomem *ioaddr, u32 len);
void dwmac4_set_tx_ring_len(void __iomem *ioaddr, u32 len);
void dwmac4_set_rx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan);
void dwmac4_set_tx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan);
#endif /* __DWMAC4_DMA_H__ */
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