/* * driver/dma/ste_dma40_ll.h * * Copyright (C) ST-Ericsson 2007-2010 * License terms: GNU General Public License (GPL) version 2 * Author: Per Friden <per.friden@stericsson.com> * Author: Jonas Aaberg <jonas.aberg@stericsson.com> */ #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) /* 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_DEACTIVATE_EVENTLINE 0x0 #define D40_ACTIVATE_EVENTLINE 0x1 #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_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_LCPA 0x020 #define D40_DREG_LCLA 0x024 #define D40_DREG_ACTIVE 0x050 #define D40_DREG_ACTIVO 0x054 #define D40_DREG_FSEB1 0x058 #define D40_DREG_FSEB2 0x05C #define D40_DREG_PCMIS 0x060 #define D40_DREG_PCICR 0x064 #define D40_DREG_PCTIS 0x068 #define D40_DREG_PCEIS 0x06C #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_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 configration 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. * @dst_addr: Physical destination address. * @src_addr: Physical source address. * * All DMA transfers have a source and a destination. */ struct d40_phy_lli_bidir { struct d40_phy_lli *src; struct d40_phy_lli *dst; dma_addr_t dst_addr; dma_addr_t src_addr; }; /** * 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; }; /** * struct d40_lcla_elem - Info for one LCA element. * * @src_id: logical channel src id * @dst_id: logical channel dst id * @src: LCPA formated src parameters * @dst: LCPA formated dst parameters * */ struct d40_lcla_elem { int src_id; int dst_id; struct d40_log_lli *src; struct d40_log_lli *dst; }; /* Physical channels */ void d40_phy_cfg(struct stedma40_chan_cfg *cfg, u32 *src_cfg, u32 *dst_cfg, bool is_log); 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, u32 data_width, int psize, bool term_int); int d40_phy_fill_lli(struct d40_phy_lli *lli, dma_addr_t data, u32 data_size, int psize, dma_addr_t next_lli, u32 reg_cfg, bool term_int, u32 data_width, bool is_device); void d40_phy_lli_write(void __iomem *virtbase, u32 phy_chan_num, struct d40_phy_lli *lli_dst, struct d40_phy_lli *lli_src); /* Logical channels */ void d40_log_fill_lli(struct d40_log_lli *lli, dma_addr_t data, u32 data_size, u32 lli_next_off, u32 reg_cfg, u32 data_width, bool term_int, bool addr_inc); int d40_log_sg_to_dev(struct d40_lcla_elem *lcla, struct scatterlist *sg, int sg_len, struct d40_log_lli_bidir *lli, struct d40_def_lcsp *lcsp, u32 src_data_width, u32 dst_data_width, enum dma_data_direction direction, bool term_int, dma_addr_t dev_addr, int max_len, int llis_per_log); int d40_log_lli_write(struct d40_log_lli_full *lcpa, struct d40_log_lli *lcla_src, struct d40_log_lli *lcla_dst, struct d40_log_lli *lli_dst, struct d40_log_lli *lli_src, int llis_per_log); int d40_log_sg_to_lli(int lcla_id, struct scatterlist *sg, int sg_len, struct d40_log_lli *lli_sg, u32 lcsp13, /* src or dst*/ u32 data_width, bool term_int, int max_len, int llis_per_log); #endif /* STE_DMA40_LLI_H */