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omap-dma.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_OMAP_DMA_H #define __LINUX_OMAP_DMA_H /* * Legacy OMAP DMA handling defines and functions * * NOTE: Do not use these any longer. * * Use the generic dmaengine functions as defined in * include/linux/dmaengine.h. * * Copyright (C) 2003 Nokia Corporation * Author: Juha Yrjölä <juha.yrjola@nokia.com> * */ #include <linux/platform_device.h> #define INT_DMA_LCD (NR_IRQS_LEGACY + 25) #define OMAP1_DMA_TOUT_IRQ (1 << 0) #define OMAP_DMA_DROP_IRQ (1 << 1) #define OMAP_DMA_HALF_IRQ (1 << 2) #define OMAP_DMA_FRAME_IRQ (1 << 3) #define OMAP_DMA_LAST_IRQ (1 << 4) #define OMAP_DMA_BLOCK_IRQ (1 << 5) #define OMAP1_DMA_SYNC_IRQ (1 << 6) #define OMAP2_DMA_PKT_IRQ (1 << 7) #define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8) #define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9) #define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10) #define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11) #define OMAP_DMA_CCR_EN (1 << 7) #define OMAP_DMA_CCR_RD_ACTIVE (1 << 9) #define OMAP_DMA_CCR_WR_ACTIVE (1 << 10) #define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24) #define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25) #define OMAP_DMA_DATA_TYPE_S8 0x00 #define OMAP_DMA_DATA_TYPE_S16 0x01 #define OMAP_DMA_DATA_TYPE_S32 0x02 #define OMAP_DMA_SYNC_ELEMENT 0x00 #define OMAP_DMA_SYNC_FRAME 0x01 #define OMAP_DMA_SYNC_BLOCK 0x02 #define OMAP_DMA_SYNC_PACKET 0x03 #define OMAP_DMA_DST_SYNC_PREFETCH 0x02 #define OMAP_DMA_SRC_SYNC 0x01 #define OMAP_DMA_DST_SYNC 0x00 #define OMAP_DMA_PORT_EMIFF 0x00 #define OMAP_DMA_PORT_EMIFS 0x01 #define OMAP_DMA_PORT_OCP_T1 0x02 #define OMAP_DMA_PORT_TIPB 0x03 #define OMAP_DMA_PORT_OCP_T2 0x04 #define OMAP_DMA_PORT_MPUI 0x05 #define OMAP_DMA_AMODE_CONSTANT 0x00 #define OMAP_DMA_AMODE_POST_INC 0x01 #define OMAP_DMA_AMODE_SINGLE_IDX 0x02 #define OMAP_DMA_AMODE_DOUBLE_IDX 0x03 #define DMA_DEFAULT_FIFO_DEPTH 0x10 #define DMA_DEFAULT_ARB_RATE 0x01 /* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */ #define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */ #define DMA_THREAD_RESERVE_ONET (0x01 << 12) #define DMA_THREAD_RESERVE_TWOT (0x02 << 12) #define DMA_THREAD_RESERVE_THREET (0x03 << 12) #define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */ #define DMA_THREAD_FIFO_75 (0x01 << 14) #define DMA_THREAD_FIFO_25 (0x02 << 14) #define DMA_THREAD_FIFO_50 (0x03 << 14) /* DMA4_OCP_SYSCONFIG bits */ #define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12) #define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8) #define DMA_SYSCONFIG_EMUFREE (1 << 5) #define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3) #define DMA_SYSCONFIG_SOFTRESET (1 << 2) #define DMA_SYSCONFIG_AUTOIDLE (1 << 0) #define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12) #define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3) #define DMA_IDLEMODE_SMARTIDLE 0x2 #define DMA_IDLEMODE_NO_IDLE 0x1 #define DMA_IDLEMODE_FORCE_IDLE 0x0 /* Chaining modes*/ #ifndef CONFIG_ARCH_OMAP1 #define OMAP_DMA_STATIC_CHAIN 0x1 #define OMAP_DMA_DYNAMIC_CHAIN 0x2 #define OMAP_DMA_CHAIN_ACTIVE 0x1 #define OMAP_DMA_CHAIN_INACTIVE 0x0 #endif #define DMA_CH_PRIO_HIGH 0x1 #define DMA_CH_PRIO_LOW 0x0 /* Def */ /* Errata handling */ #define IS_DMA_ERRATA(id) (errata & (id)) #define SET_DMA_ERRATA(id) (errata |= (id)) #define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0) #define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1) #define DMA_ERRATA_i378 BIT(0x2) #define DMA_ERRATA_i541 BIT(0x3) #define DMA_ERRATA_i88 BIT(0x4) #define DMA_ERRATA_3_3 BIT(0x5) #define DMA_ROMCODE_BUG BIT(0x6) /* Attributes for OMAP DMA Contrller */ #define DMA_LINKED_LCH BIT(0x0) #define GLOBAL_PRIORITY BIT(0x1) #define RESERVE_CHANNEL BIT(0x2) #define IS_CSSA_32 BIT(0x3) #define IS_CDSA_32 BIT(0x4) #define IS_RW_PRIORITY BIT(0x5) #define ENABLE_1510_MODE BIT(0x6) #define SRC_PORT BIT(0x7) #define DST_PORT BIT(0x8) #define SRC_INDEX BIT(0x9) #define DST_INDEX BIT(0xa) #define IS_BURST_ONLY4 BIT(0xb) #define CLEAR_CSR_ON_READ BIT(0xc) #define IS_WORD_16 BIT(0xd) #define ENABLE_16XX_MODE BIT(0xe) #define HS_CHANNELS_RESERVED BIT(0xf) /* Defines for DMA Capabilities */ #define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18) #define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19) #define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20) enum omap_reg_offsets { GCR, GSCR, GRST1, HW_ID, PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID, PCHD_ID, CAPS_0, CAPS_1, CAPS_2, CAPS_3, CAPS_4, PCH2_SR, PCH0_SR, PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0, IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0, IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS, OCP_SYSCONFIG, /* omap1+ specific */ CPC, CCR2, LCH_CTRL, /* Common registers for all omap's */ CSDP, CCR, CICR, CSR, CEN, CFN, CSFI, CSEI, CSAC, CDAC, CDEI, CDFI, CLNK_CTRL, /* Channel specific registers */ CSSA, CDSA, COLOR, CCEN, CCFN, /* omap3630 and omap4 specific */ CDP, CNDP, CCDN, }; enum omap_dma_burst_mode { OMAP_DMA_DATA_BURST_DIS = 0, OMAP_DMA_DATA_BURST_4, OMAP_DMA_DATA_BURST_8, OMAP_DMA_DATA_BURST_16, }; enum end_type { OMAP_DMA_LITTLE_ENDIAN = 0, OMAP_DMA_BIG_ENDIAN }; enum omap_dma_color_mode { OMAP_DMA_COLOR_DIS = 0, OMAP_DMA_CONSTANT_FILL, OMAP_DMA_TRANSPARENT_COPY }; enum omap_dma_write_mode { OMAP_DMA_WRITE_NON_POSTED = 0, OMAP_DMA_WRITE_POSTED, OMAP_DMA_WRITE_LAST_NON_POSTED }; enum omap_dma_channel_mode { OMAP_DMA_LCH_2D = 0, OMAP_DMA_LCH_G, OMAP_DMA_LCH_P, OMAP_DMA_LCH_PD }; struct omap_dma_channel_params { int data_type; /* data type 8,16,32 */ int elem_count; /* number of elements in a frame */ int frame_count; /* number of frames in a element */ int src_port; /* Only on OMAP1 REVISIT: Is this needed? */ int src_amode; /* constant, post increment, indexed, double indexed */ unsigned long src_start; /* source address : physical */ int src_ei; /* source element index */ int src_fi; /* source frame index */ int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */ int dst_amode; /* constant, post increment, indexed, double indexed */ unsigned long dst_start; /* source address : physical */ int dst_ei; /* source element index */ int dst_fi; /* source frame index */ int trigger; /* trigger attached if the channel is synchronized */ int sync_mode; /* sycn on element, frame , block or packet */ int src_or_dst_synch; /* source synch(1) or destination synch(0) */ int ie; /* interrupt enabled */ unsigned char read_prio;/* read priority */ unsigned char write_prio;/* write priority */ #ifndef CONFIG_ARCH_OMAP1 enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */ #endif }; struct omap_dma_lch { int next_lch; int dev_id; u16 saved_csr; u16 enabled_irqs; const char *dev_name; void (*callback)(int lch, u16 ch_status, void *data); void *data; long flags; int state; int chain_id; int status; }; struct omap_dma_dev_attr { u32 dev_caps; u16 lch_count; u16 chan_count; }; enum { OMAP_DMA_REG_NONE, OMAP_DMA_REG_16BIT, OMAP_DMA_REG_2X16BIT, OMAP_DMA_REG_32BIT, }; struct omap_dma_reg { u16 offset; u8 stride; u8 type; }; #define SDMA_FILTER_PARAM(hw_req) ((int[]) { (hw_req) }) struct dma_slave_map; /* System DMA platform data structure */ struct omap_system_dma_plat_info { const struct omap_dma_reg *reg_map; unsigned channel_stride; struct omap_dma_dev_attr *dma_attr; u32 errata; void (*show_dma_caps)(void); void (*clear_lch_regs)(int lch); void (*clear_dma)(int lch); void (*dma_write)(u32 val, int reg, int lch); u32 (*dma_read)(int reg, int lch); const struct dma_slave_map *slave_map; int slavecnt; }; #ifdef CONFIG_ARCH_OMAP2PLUS #define dma_omap2plus() 1 #else #define dma_omap2plus() 0 #endif #define dma_omap1() (!dma_omap2plus()) #define __dma_omap15xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_1510_MODE) #define __dma_omap16xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_16XX_MODE) #define dma_omap15xx() __dma_omap15xx(d) #define dma_omap16xx() __dma_omap16xx(d) extern struct omap_system_dma_plat_info *omap_get_plat_info(void); #if defined(CONFIG_ARCH_OMAP1) extern void omap_set_dma_priority(int lch, int dst_port, int priority); #else static inline void omap_set_dma_priority(int lch, int dst_port, int priority) { } #endif extern int omap_request_dma(int dev_id, const char *dev_name, void (*callback)(int lch, u16 ch_status, void *data), void *data, int *dma_ch); extern void omap_free_dma(int ch); #if IS_ENABLED(CONFIG_USB_OMAP) extern void omap_disable_dma_irq(int ch, u16 irq_bits); extern void omap_start_dma(int lch); extern void omap_stop_dma(int lch); extern void omap_set_dma_transfer_params(int lch, int data_type, int elem_count, int frame_count, int sync_mode, int dma_trigger, int src_or_dst_synch); extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode); extern void omap_set_dma_src_params(int lch, int src_port, int src_amode, unsigned long src_start, int src_ei, int src_fi); extern void omap_set_dma_src_data_pack(int lch, int enable); extern void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode); extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode, unsigned long dest_start, int dst_ei, int dst_fi); extern void omap_set_dma_dest_data_pack(int lch, int enable); extern void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode); extern dma_addr_t omap_get_dma_src_pos(int lch); extern dma_addr_t omap_get_dma_dst_pos(int lch); extern int omap_get_dma_active_status(int lch); #endif extern int omap_dma_running(void); #if IS_ENABLED(CONFIG_FB_OMAP) extern int omap_lcd_dma_running(void); #else static inline int omap_lcd_dma_running(void) { return 0; } #endif #endif /* __LINUX_OMAP_DMA_H */
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