/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) ST-Ericsson SA 2007-2010
* Author: Per Friden <per.friden@stericsson.com> for ST-Ericsson SA
* Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson SA
*/
#ifndef STE_DMA40_LL_H
#define STE_DMA40_LL_H
#define D40_DREG_PCBASE 0x400
#define D40_DREG_PCDELTA (8 * 4)
#define D40_LLI_ALIGN 16 /* LLI alignment must be 16 bytes. */
#define D40_LCPA_CHAN_SIZE 32
#define D40_LCPA_CHAN_DST_DELTA 16
#define D40_TYPE_TO_GROUP(type) (type / 16)
#define D40_TYPE_TO_EVENT(type) (type % 16)
#define D40_GROUP_SIZE 8
#define D40_PHYS_TO_GROUP(phys) ((phys & (D40_GROUP_SIZE - 1)) / 2)
/* Most bits of the CFG register are the same in log as in phy mode */
#define D40_SREG_CFG_MST_POS 15
#define D40_SREG_CFG_TIM_POS 14
#define D40_SREG_CFG_EIM_POS 13
#define D40_SREG_CFG_LOG_INCR_POS 12
#define D40_SREG_CFG_PHY_PEN_POS 12
#define D40_SREG_CFG_PSIZE_POS 10
#define D40_SREG_CFG_ESIZE_POS 8
#define D40_SREG_CFG_PRI_POS 7
#define D40_SREG_CFG_LBE_POS 6
#define D40_SREG_CFG_LOG_GIM_POS 5
#define D40_SREG_CFG_LOG_MFU_POS 4
#define D40_SREG_CFG_PHY_TM_POS 4
#define D40_SREG_CFG_PHY_EVTL_POS 0
/* Standard channel parameters - basic mode (element register) */
#define D40_SREG_ELEM_PHY_ECNT_POS 16
#define D40_SREG_ELEM_PHY_EIDX_POS 0
#define D40_SREG_ELEM_PHY_ECNT_MASK (0xFFFF << D40_SREG_ELEM_PHY_ECNT_POS)
/* Standard channel parameters - basic mode (Link register) */
#define D40_SREG_LNK_PHY_TCP_POS 0
#define D40_SREG_LNK_PHY_LMP_POS 1
#define D40_SREG_LNK_PHY_PRE_POS 2
/*
* Source destination link address. Contains the
* 29-bit byte word aligned address of the reload area.
*/
#define D40_SREG_LNK_PHYS_LNK_MASK 0xFFFFFFF8UL
/* Standard basic channel logical mode */
/* Element register */
#define D40_SREG_ELEM_LOG_ECNT_POS 16
#define D40_SREG_ELEM_LOG_LIDX_POS 8
#define D40_SREG_ELEM_LOG_LOS_POS 1
#define D40_SREG_ELEM_LOG_TCP_POS 0
#define D40_SREG_ELEM_LOG_LIDX_MASK (0xFF << D40_SREG_ELEM_LOG_LIDX_POS)
/* Link register */
#define D40_EVENTLINE_POS(i) (2 * i)
#define D40_EVENTLINE_MASK(i) (0x3 << D40_EVENTLINE_POS(i))
/* Standard basic channel logical params in memory */
/* LCSP0 */
#define D40_MEM_LCSP0_ECNT_POS 16
#define D40_MEM_LCSP0_SPTR_POS 0
#define D40_MEM_LCSP0_ECNT_MASK (0xFFFF << D40_MEM_LCSP0_ECNT_POS)
#define D40_MEM_LCSP0_SPTR_MASK (0xFFFF << D40_MEM_LCSP0_SPTR_POS)
/* LCSP1 */
#define D40_MEM_LCSP1_SPTR_POS 16
#define D40_MEM_LCSP1_SCFG_MST_POS 15
#define D40_MEM_LCSP1_SCFG_TIM_POS 14
#define D40_MEM_LCSP1_SCFG_EIM_POS 13
#define D40_MEM_LCSP1_SCFG_INCR_POS 12
#define D40_MEM_LCSP1_SCFG_PSIZE_POS 10
#define D40_MEM_LCSP1_SCFG_ESIZE_POS 8
#define D40_MEM_LCSP1_SLOS_POS 1
#define D40_MEM_LCSP1_STCP_POS 0
#define D40_MEM_LCSP1_SPTR_MASK (0xFFFF << D40_MEM_LCSP1_SPTR_POS)
#define D40_MEM_LCSP1_SCFG_TIM_MASK (0x1 << D40_MEM_LCSP1_SCFG_TIM_POS)
#define D40_MEM_LCSP1_SCFG_INCR_MASK (0x1 << D40_MEM_LCSP1_SCFG_INCR_POS)
#define D40_MEM_LCSP1_SCFG_PSIZE_MASK (0x3 << D40_MEM_LCSP1_SCFG_PSIZE_POS)
#define D40_MEM_LCSP1_SLOS_MASK (0x7F << D40_MEM_LCSP1_SLOS_POS)
#define D40_MEM_LCSP1_STCP_MASK (0x1 << D40_MEM_LCSP1_STCP_POS)
/* LCSP2 */
#define D40_MEM_LCSP2_ECNT_POS 16
#define D40_MEM_LCSP2_ECNT_MASK (0xFFFF << D40_MEM_LCSP2_ECNT_POS)
/* LCSP3 */
#define D40_MEM_LCSP3_DCFG_MST_POS 15
#define D40_MEM_LCSP3_DCFG_TIM_POS 14
#define D40_MEM_LCSP3_DCFG_EIM_POS 13
#define D40_MEM_LCSP3_DCFG_INCR_POS 12
#define D40_MEM_LCSP3_DCFG_PSIZE_POS 10
#define D40_MEM_LCSP3_DCFG_ESIZE_POS 8
#define D40_MEM_LCSP3_DLOS_POS 1
#define D40_MEM_LCSP3_DTCP_POS 0
#define D40_MEM_LCSP3_DLOS_MASK (0x7F << D40_MEM_LCSP3_DLOS_POS)
#define D40_MEM_LCSP3_DTCP_MASK (0x1 << D40_MEM_LCSP3_DTCP_POS)
/* Standard channel parameter register offsets */
#define D40_CHAN_REG_SSCFG 0x00
#define D40_CHAN_REG_SSELT 0x04
#define D40_CHAN_REG_SSPTR 0x08
#define D40_CHAN_REG_SSLNK 0x0C
#define D40_CHAN_REG_SDCFG 0x10
#define D40_CHAN_REG_SDELT 0x14
#define D40_CHAN_REG_SDPTR 0x18
#define D40_CHAN_REG_SDLNK 0x1C
/* DMA Register Offsets */
#define D40_DREG_GCC 0x000
#define D40_DREG_GCC_ENA 0x1
/* This assumes that there are only 4 event groups */
#define D40_DREG_GCC_ENABLE_ALL 0x3ff01
#define D40_DREG_GCC_EVTGRP_POS 8
#define D40_DREG_GCC_SRC 0
#define D40_DREG_GCC_DST 1
#define D40_DREG_GCC_EVTGRP_ENA(x, y) \
(1 << (D40_DREG_GCC_EVTGRP_POS + 2 * x + y))
#define D40_DREG_PRTYP 0x004
#define D40_DREG_PRSME 0x008
#define D40_DREG_PRSMO 0x00C
#define D40_DREG_PRMSE 0x010
#define D40_DREG_PRMSO 0x014
#define D40_DREG_PRMOE 0x018
#define D40_DREG_PRMOO 0x01C
#define D40_DREG_PRMO_PCHAN_BASIC 0x1
#define D40_DREG_PRMO_PCHAN_MODULO 0x2
#define D40_DREG_PRMO_PCHAN_DOUBLE_DST 0x3
#define D40_DREG_PRMO_LCHAN_SRC_PHY_DST_LOG 0x1
#define D40_DREG_PRMO_LCHAN_SRC_LOG_DST_PHY 0x2
#define D40_DREG_PRMO_LCHAN_SRC_LOG_DST_LOG 0x3
#define D40_DREG_LCPA 0x020
#define D40_DREG_LCLA 0x024
#define D40_DREG_SSEG1 0x030
#define D40_DREG_SSEG2 0x034
#define D40_DREG_SSEG3 0x038
#define D40_DREG_SSEG4 0x03C
#define D40_DREG_SCEG1 0x040
#define D40_DREG_SCEG2 0x044
#define D40_DREG_SCEG3 0x048
#define D40_DREG_SCEG4 0x04C
#define D40_DREG_ACTIVE 0x050
#define D40_DREG_ACTIVO 0x054
#define D40_DREG_CIDMOD 0x058
#define D40_DREG_TCIDV 0x05C
#define D40_DREG_PCMIS 0x060
#define D40_DREG_PCICR 0x064
#define D40_DREG_PCTIS 0x068
#define D40_DREG_PCEIS 0x06C
#define D40_DREG_SPCMIS 0x070
#define D40_DREG_SPCICR 0x074
#define D40_DREG_SPCTIS 0x078
#define D40_DREG_SPCEIS 0x07C
#define D40_DREG_LCMIS0 0x080
#define D40_DREG_LCMIS1 0x084
#define D40_DREG_LCMIS2 0x088
#define D40_DREG_LCMIS3 0x08C
#define D40_DREG_LCICR0 0x090
#define D40_DREG_LCICR1 0x094
#define D40_DREG_LCICR2 0x098
#define D40_DREG_LCICR3 0x09C
#define D40_DREG_LCTIS0 0x0A0
#define D40_DREG_LCTIS1 0x0A4
#define D40_DREG_LCTIS2 0x0A8
#define D40_DREG_LCTIS3 0x0AC
#define D40_DREG_LCEIS0 0x0B0
#define D40_DREG_LCEIS1 0x0B4
#define D40_DREG_LCEIS2 0x0B8
#define D40_DREG_LCEIS3 0x0BC
#define D40_DREG_SLCMIS1 0x0C0
#define D40_DREG_SLCMIS2 0x0C4
#define D40_DREG_SLCMIS3 0x0C8
#define D40_DREG_SLCMIS4 0x0CC
#define D40_DREG_SLCICR1 0x0D0
#define D40_DREG_SLCICR2 0x0D4
#define D40_DREG_SLCICR3 0x0D8
#define D40_DREG_SLCICR4 0x0DC
#define D40_DREG_SLCTIS1 0x0E0
#define D40_DREG_SLCTIS2 0x0E4
#define D40_DREG_SLCTIS3 0x0E8
#define D40_DREG_SLCTIS4 0x0EC
#define D40_DREG_SLCEIS1 0x0F0
#define D40_DREG_SLCEIS2 0x0F4
#define D40_DREG_SLCEIS3 0x0F8
#define D40_DREG_SLCEIS4 0x0FC
#define D40_DREG_FSESS1 0x100
#define D40_DREG_FSESS2 0x104
#define D40_DREG_FSEBS1 0x108
#define D40_DREG_FSEBS2 0x10C
#define D40_DREG_PSEG1 0x110
#define D40_DREG_PSEG2 0x114
#define D40_DREG_PSEG3 0x118
#define D40_DREG_PSEG4 0x11C
#define D40_DREG_PCEG1 0x120
#define D40_DREG_PCEG2 0x124
#define D40_DREG_PCEG3 0x128
#define D40_DREG_PCEG4 0x12C
#define D40_DREG_RSEG1 0x130
#define D40_DREG_RSEG2 0x134
#define D40_DREG_RSEG3 0x138
#define D40_DREG_RSEG4 0x13C
#define D40_DREG_RCEG1 0x140
#define D40_DREG_RCEG2 0x144
#define D40_DREG_RCEG3 0x148
#define D40_DREG_RCEG4 0x14C
#define D40_DREG_PREFOT 0x15C
#define D40_DREG_EXTCFG 0x160
#define D40_DREG_CPSEG1 0x200
#define D40_DREG_CPSEG2 0x204
#define D40_DREG_CPSEG3 0x208
#define D40_DREG_CPSEG4 0x20C
#define D40_DREG_CPSEG5 0x210
#define D40_DREG_CPCEG1 0x220
#define D40_DREG_CPCEG2 0x224
#define D40_DREG_CPCEG3 0x228
#define D40_DREG_CPCEG4 0x22C
#define D40_DREG_CPCEG5 0x230
#define D40_DREG_CRSEG1 0x240
#define D40_DREG_CRSEG2 0x244
#define D40_DREG_CRSEG3 0x248
#define D40_DREG_CRSEG4 0x24C
#define D40_DREG_CRSEG5 0x250
#define D40_DREG_CRCEG1 0x260
#define D40_DREG_CRCEG2 0x264
#define D40_DREG_CRCEG3 0x268
#define D40_DREG_CRCEG4 0x26C
#define D40_DREG_CRCEG5 0x270
#define D40_DREG_CFSESS1 0x280
#define D40_DREG_CFSESS2 0x284
#define D40_DREG_CFSESS3 0x288
#define D40_DREG_CFSEBS1 0x290
#define D40_DREG_CFSEBS2 0x294
#define D40_DREG_CFSEBS3 0x298
#define D40_DREG_CLCMIS1 0x300
#define D40_DREG_CLCMIS2 0x304
#define D40_DREG_CLCMIS3 0x308
#define D40_DREG_CLCMIS4 0x30C
#define D40_DREG_CLCMIS5 0x310
#define D40_DREG_CLCICR1 0x320
#define D40_DREG_CLCICR2 0x324
#define D40_DREG_CLCICR3 0x328
#define D40_DREG_CLCICR4 0x32C
#define D40_DREG_CLCICR5 0x330
#define D40_DREG_CLCTIS1 0x340
#define D40_DREG_CLCTIS2 0x344
#define D40_DREG_CLCTIS3 0x348
#define D40_DREG_CLCTIS4 0x34C
#define D40_DREG_CLCTIS5 0x350
#define D40_DREG_CLCEIS1 0x360
#define D40_DREG_CLCEIS2 0x364
#define D40_DREG_CLCEIS3 0x368
#define D40_DREG_CLCEIS4 0x36C
#define D40_DREG_CLCEIS5 0x370
#define D40_DREG_CPCMIS 0x380
#define D40_DREG_CPCICR 0x384
#define D40_DREG_CPCTIS 0x388
#define D40_DREG_CPCEIS 0x38C
#define D40_DREG_SCCIDA1 0xE80
#define D40_DREG_SCCIDA2 0xE90
#define D40_DREG_SCCIDA3 0xEA0
#define D40_DREG_SCCIDA4 0xEB0
#define D40_DREG_SCCIDA5 0xEC0
#define D40_DREG_SCCIDB1 0xE84
#define D40_DREG_SCCIDB2 0xE94
#define D40_DREG_SCCIDB3 0xEA4
#define D40_DREG_SCCIDB4 0xEB4
#define D40_DREG_SCCIDB5 0xEC4
#define D40_DREG_PRSCCIDA 0xF80
#define D40_DREG_PRSCCIDB 0xF84
#define D40_DREG_STFU 0xFC8
#define D40_DREG_ICFG 0xFCC
#define D40_DREG_PERIPHID0 0xFE0
#define D40_DREG_PERIPHID1 0xFE4
#define D40_DREG_PERIPHID2 0xFE8
#define D40_DREG_PERIPHID3 0xFEC
#define D40_DREG_CELLID0 0xFF0
#define D40_DREG_CELLID1 0xFF4
#define D40_DREG_CELLID2 0xFF8
#define D40_DREG_CELLID3 0xFFC
/* LLI related structures */
/**
* struct d40_phy_lli - The basic configuration register for each physical
* channel.
*
* @reg_cfg: The configuration register.
* @reg_elt: The element register.
* @reg_ptr: The pointer register.
* @reg_lnk: The link register.
*
* These registers are set up for both physical and logical transfers
* Note that the bit in each register means differently in logical and
* physical(standard) mode.
*
* This struct must be 16 bytes aligned, and only contain physical registers
* since it will be directly accessed by the DMA.
*/
struct d40_phy_lli {
u32 reg_cfg;
u32 reg_elt;
u32 reg_ptr;
u32 reg_lnk;
};
/**
* struct d40_phy_lli_bidir - struct for a transfer.
*
* @src: Register settings for src channel.
* @dst: Register settings for dst channel.
*
* All DMA transfers have a source and a destination.
*/
struct d40_phy_lli_bidir {
struct d40_phy_lli *src;
struct d40_phy_lli *dst;
};
/**
* struct d40_log_lli - logical lli configuration
*
* @lcsp02: Either maps to register lcsp0 if src or lcsp2 if dst.
* @lcsp13: Either maps to register lcsp1 if src or lcsp3 if dst.
*
* This struct must be 8 bytes aligned since it will be accessed directy by
* the DMA. Never add any none hw mapped registers to this struct.
*/
struct d40_log_lli {
u32 lcsp02;
u32 lcsp13;
};
/**
* struct d40_log_lli_bidir - For both src and dst
*
* @src: pointer to src lli configuration.
* @dst: pointer to dst lli configuration.
*
* You always have a src and a dst when doing DMA transfers.
*/
struct d40_log_lli_bidir {
struct d40_log_lli *src;
struct d40_log_lli *dst;
};
/**
* struct d40_log_lli_full - LCPA layout
*
* @lcsp0: Logical Channel Standard Param 0 - Src.
* @lcsp1: Logical Channel Standard Param 1 - Src.
* @lcsp2: Logical Channel Standard Param 2 - Dst.
* @lcsp3: Logical Channel Standard Param 3 - Dst.
*
* This struct maps to LCPA physical memory layout. Must map to
* the hw.
*/
struct d40_log_lli_full {
u32 lcsp0;
u32 lcsp1;
u32 lcsp2;
u32 lcsp3;
};
/**
* struct d40_def_lcsp - Default LCSP1 and LCSP3 settings
*
* @lcsp3: The default configuration for dst.
* @lcsp1: The default configuration for src.
*/
struct d40_def_lcsp {
u32 lcsp3;
u32 lcsp1;
};
/* Physical channels */
enum d40_lli_flags {
LLI_ADDR_INC = 1 << 0,
LLI_TERM_INT = 1 << 1,
LLI_CYCLIC = 1 << 2,
LLI_LAST_LINK = 1 << 3,
};
void d40_phy_cfg(struct stedma40_chan_cfg *cfg,
u32 *src_cfg,
u32 *dst_cfg);
void d40_log_cfg(struct stedma40_chan_cfg *cfg,
u32 *lcsp1,
u32 *lcsp2);
int d40_phy_sg_to_lli(struct scatterlist *sg,
int sg_len,
dma_addr_t target,
struct d40_phy_lli *lli,
dma_addr_t lli_phys,
u32 reg_cfg,
struct stedma40_half_channel_info *info,
struct stedma40_half_channel_info *otherinfo,
unsigned long flags);
/* Logical channels */
int d40_log_sg_to_lli(struct scatterlist *sg,
int sg_len,
dma_addr_t dev_addr,
struct d40_log_lli *lli_sg,
u32 lcsp13, /* src or dst*/
u32 data_width1, u32 data_width2);
void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa,
struct d40_log_lli *lli_dst,
struct d40_log_lli *lli_src,
int next, unsigned int flags);
void d40_log_lli_lcla_write(struct d40_log_lli *lcla,
struct d40_log_lli *lli_dst,
struct d40_log_lli *lli_src,
int next, unsigned int flags);
#endif /* STE_DMA40_LLI_H */