mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 00:42:16 +00:00
8d318a50b3
This is a straightforward driver for the ST-Ericsson DMA40 DMA controller found in U8500, implemented akin to the existing COH 901 318 driver. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidh Kasagar <srinidhi.kasagar@stericsson.com> Cc: STEricsson_nomadik_linux@list.st.com Cc: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
355 lines
9.7 KiB
C
355 lines
9.7 KiB
C
/*
|
|
* 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_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);
|
|
|
|
void 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 */
|