/* * dma.h - Blackfin DMA defines/structures/etc... * * Copyright 2004-2008 Analog Devices Inc. * Licensed under the GPL-2 or later. */ #ifndef _BLACKFIN_DMA_H_ #define _BLACKFIN_DMA_H_ #include <linux/interrupt.h> #include <mach/dma.h> #include <linux/atomic.h> #include <asm/blackfin.h> #include <asm/page.h> #include <asm-generic/dma.h> #include <asm/bfin_dma.h> /*------------------------- * config reg bits value *-------------------------*/ #define DATA_SIZE_8 0 #define DATA_SIZE_16 1 #define DATA_SIZE_32 2 #ifdef CONFIG_BF60x #define DATA_SIZE_64 3 #endif #define DMA_FLOW_STOP 0 #define DMA_FLOW_AUTO 1 #ifdef CONFIG_BF60x #define DMA_FLOW_LIST 4 #define DMA_FLOW_ARRAY 5 #define DMA_FLOW_LIST_DEMAND 6 #define DMA_FLOW_ARRAY_DEMAND 7 #else #define DMA_FLOW_ARRAY 4 #define DMA_FLOW_SMALL 6 #define DMA_FLOW_LARGE 7 #endif #define DIMENSION_LINEAR 0 #define DIMENSION_2D 1 #define DIR_READ 0 #define DIR_WRITE 1 #define INTR_DISABLE 0 #ifdef CONFIG_BF60x #define INTR_ON_PERI 1 #endif #define INTR_ON_BUF 2 #define INTR_ON_ROW 3 #define DMA_NOSYNC_KEEP_DMA_BUF 0 #define DMA_SYNC_RESTART 1 #ifdef DMA_MMR_SIZE_32 #define DMA_MMR_SIZE_TYPE long #define DMA_MMR_READ bfin_read32 #define DMA_MMR_WRITE bfin_write32 #else #define DMA_MMR_SIZE_TYPE short #define DMA_MMR_READ bfin_read16 #define DMA_MMR_WRITE bfin_write16 #endif struct dma_desc_array { unsigned long start_addr; unsigned DMA_MMR_SIZE_TYPE cfg; unsigned DMA_MMR_SIZE_TYPE x_count; DMA_MMR_SIZE_TYPE x_modify; } __attribute__((packed)); struct dmasg { void *next_desc_addr; unsigned long start_addr; unsigned DMA_MMR_SIZE_TYPE cfg; unsigned DMA_MMR_SIZE_TYPE x_count; DMA_MMR_SIZE_TYPE x_modify; unsigned DMA_MMR_SIZE_TYPE y_count; DMA_MMR_SIZE_TYPE y_modify; } __attribute__((packed)); struct dma_register { void *next_desc_ptr; /* DMA Next Descriptor Pointer register */ unsigned long start_addr; /* DMA Start address register */ #ifdef CONFIG_BF60x unsigned long cfg; /* DMA Configuration register */ unsigned long x_count; /* DMA x_count register */ long x_modify; /* DMA x_modify register */ unsigned long y_count; /* DMA y_count register */ long y_modify; /* DMA y_modify register */ unsigned long reserved; unsigned long reserved2; void *curr_desc_ptr; /* DMA Current Descriptor Pointer register */ void *prev_desc_ptr; /* DMA previous initial Descriptor Pointer register */ unsigned long curr_addr_ptr; /* DMA Current Address Pointer register */ unsigned long irq_status; /* DMA irq status register */ unsigned long curr_x_count; /* DMA Current x-count register */ unsigned long curr_y_count; /* DMA Current y-count register */ unsigned long reserved3; unsigned long bw_limit_count; /* DMA band width limit count register */ unsigned long curr_bw_limit_count; /* DMA Current band width limit count register */ unsigned long bw_monitor_count; /* DMA band width limit count register */ unsigned long curr_bw_monitor_count; /* DMA Current band width limit count register */ #else unsigned short cfg; /* DMA Configuration register */ unsigned short dummy1; /* DMA Configuration register */ unsigned long reserved; unsigned short x_count; /* DMA x_count register */ unsigned short dummy2; short x_modify; /* DMA x_modify register */ unsigned short dummy3; unsigned short y_count; /* DMA y_count register */ unsigned short dummy4; short y_modify; /* DMA y_modify register */ unsigned short dummy5; void *curr_desc_ptr; /* DMA Current Descriptor Pointer register */ unsigned long curr_addr_ptr; /* DMA Current Address Pointer register */ unsigned short irq_status; /* DMA irq status register */ unsigned short dummy6; unsigned short peripheral_map; /* DMA peripheral map register */ unsigned short dummy7; unsigned short curr_x_count; /* DMA Current x-count register */ unsigned short dummy8; unsigned long reserved2; unsigned short curr_y_count; /* DMA Current y-count register */ unsigned short dummy9; unsigned long reserved3; #endif }; struct dma_channel { const char *device_id; atomic_t chan_status; volatile struct dma_register *regs; struct dmasg *sg; /* large mode descriptor */ unsigned int irq; void *data; #ifdef CONFIG_PM unsigned short saved_peripheral_map; #endif }; #ifdef CONFIG_PM int blackfin_dma_suspend(void); void blackfin_dma_resume(void); #endif /******************************************************************************* * DMA API's *******************************************************************************/ extern struct dma_channel dma_ch[MAX_DMA_CHANNELS]; extern struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS]; extern int channel2irq(unsigned int channel); static inline void set_dma_start_addr(unsigned int channel, unsigned long addr) { dma_ch[channel].regs->start_addr = addr; } static inline void set_dma_next_desc_addr(unsigned int channel, void *addr) { dma_ch[channel].regs->next_desc_ptr = addr; } static inline void set_dma_curr_desc_addr(unsigned int channel, void *addr) { dma_ch[channel].regs->curr_desc_ptr = addr; } static inline void set_dma_x_count(unsigned int channel, unsigned DMA_MMR_SIZE_TYPE x_count) { dma_ch[channel].regs->x_count = x_count; } static inline void set_dma_y_count(unsigned int channel, unsigned DMA_MMR_SIZE_TYPE y_count) { dma_ch[channel].regs->y_count = y_count; } static inline void set_dma_x_modify(unsigned int channel, DMA_MMR_SIZE_TYPE x_modify) { dma_ch[channel].regs->x_modify = x_modify; } static inline void set_dma_y_modify(unsigned int channel, DMA_MMR_SIZE_TYPE y_modify) { dma_ch[channel].regs->y_modify = y_modify; } static inline void set_dma_config(unsigned int channel, unsigned DMA_MMR_SIZE_TYPE config) { dma_ch[channel].regs->cfg = config; } static inline void set_dma_curr_addr(unsigned int channel, unsigned long addr) { dma_ch[channel].regs->curr_addr_ptr = addr; } #ifdef CONFIG_BF60x static inline unsigned long set_bfin_dma_config2(char direction, char flow_mode, char intr_mode, char dma_mode, char mem_width, char syncmode, char peri_width) { unsigned long config = 0; switch (intr_mode) { case INTR_ON_BUF: if (dma_mode == DIMENSION_2D) config = DI_EN_Y; else config = DI_EN_X; break; case INTR_ON_ROW: config = DI_EN_X; break; case INTR_ON_PERI: config = DI_EN_P; break; }; return config | (direction << 1) | (mem_width << 8) | (dma_mode << 26) | (flow_mode << 12) | (syncmode << 2) | (peri_width << 4); } #endif static inline unsigned DMA_MMR_SIZE_TYPE set_bfin_dma_config(char direction, char flow_mode, char intr_mode, char dma_mode, char mem_width, char syncmode) { #ifdef CONFIG_BF60x return set_bfin_dma_config2(direction, flow_mode, intr_mode, dma_mode, mem_width, syncmode, mem_width); #else return (direction << 1) | (mem_width << 2) | (dma_mode << 4) | (intr_mode << 6) | (flow_mode << 12) | (syncmode << 5); #endif } static inline unsigned DMA_MMR_SIZE_TYPE get_dma_curr_irqstat(unsigned int channel) { return dma_ch[channel].regs->irq_status; } static inline unsigned DMA_MMR_SIZE_TYPE get_dma_curr_xcount(unsigned int channel) { return dma_ch[channel].regs->curr_x_count; } static inline unsigned DMA_MMR_SIZE_TYPE get_dma_curr_ycount(unsigned int channel) { return dma_ch[channel].regs->curr_y_count; } static inline void *get_dma_next_desc_ptr(unsigned int channel) { return dma_ch[channel].regs->next_desc_ptr; } static inline void *get_dma_curr_desc_ptr(unsigned int channel) { return dma_ch[channel].regs->curr_desc_ptr; } static inline unsigned DMA_MMR_SIZE_TYPE get_dma_config(unsigned int channel) { return dma_ch[channel].regs->cfg; } static inline unsigned long get_dma_curr_addr(unsigned int channel) { return dma_ch[channel].regs->curr_addr_ptr; } static inline void set_dma_sg(unsigned int channel, struct dmasg *sg, int ndsize) { /* Make sure the internal data buffers in the core are drained * so that the DMA descriptors are completely written when the * DMA engine goes to fetch them below. */ SSYNC(); dma_ch[channel].regs->next_desc_ptr = sg; dma_ch[channel].regs->cfg = (dma_ch[channel].regs->cfg & ~NDSIZE) | ((ndsize << NDSIZE_OFFSET) & NDSIZE); } static inline int dma_channel_active(unsigned int channel) { return atomic_read(&dma_ch[channel].chan_status); } static inline void disable_dma(unsigned int channel) { dma_ch[channel].regs->cfg &= ~DMAEN; SSYNC(); } static inline void enable_dma(unsigned int channel) { dma_ch[channel].regs->curr_x_count = 0; dma_ch[channel].regs->curr_y_count = 0; dma_ch[channel].regs->cfg |= DMAEN; } int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data); static inline void dma_disable_irq(unsigned int channel) { disable_irq(dma_ch[channel].irq); } static inline void dma_disable_irq_nosync(unsigned int channel) { disable_irq_nosync(dma_ch[channel].irq); } static inline void dma_enable_irq(unsigned int channel) { enable_irq(dma_ch[channel].irq); } static inline void clear_dma_irqstat(unsigned int channel) { dma_ch[channel].regs->irq_status = DMA_DONE | DMA_ERR | DMA_PIRQ; } void *dma_memcpy(void *dest, const void *src, size_t count); void *dma_memcpy_nocache(void *dest, const void *src, size_t count); void *safe_dma_memcpy(void *dest, const void *src, size_t count); void blackfin_dma_early_init(void); void early_dma_memcpy(void *dest, const void *src, size_t count); void early_dma_memcpy_done(void); #endif
Name | Type | Size | Permission | Actions |
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Kbuild | File | 658 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 1.55 KB | 0644 |
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barrier.h | File | 2.55 KB | 0644 |
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bfin-global.h | File | 2.8 KB | 0644 |
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bfin-lq035q1.h | File | 868 B | 0644 |
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bfin5xx_spi.h | File | 2.07 KB | 0644 |
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bfin_can.h | File | 36.04 KB | 0644 |
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bfin_dma.h | File | 5.46 KB | 0644 |
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bfin_pfmon.h | File | 1.11 KB | 0644 |
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bfin_ppi.h | File | 9.01 KB | 0644 |
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bfin_sdh.h | File | 7.2 KB | 0644 |
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bfin_serial.h | File | 17.02 KB | 0644 |
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bfin_simple_timer.h | File | 949 B | 0644 |
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bfin_sport.h | File | 1.21 KB | 0644 |
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bfin_sport3.h | File | 5.47 KB | 0644 |
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bfin_twi.h | File | 6.25 KB | 0644 |
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bfin_watchdog.h | File | 696 B | 0644 |
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bfrom.h | File | 3.36 KB | 0644 |
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bitops.h | File | 3.45 KB | 0644 |
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blackfin.h | File | 1.55 KB | 0644 |
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bug.h | File | 1.49 KB | 0644 |
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cache.h | File | 1.47 KB | 0644 |
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cacheflush.h | File | 3.79 KB | 0644 |
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cdef_LPBlackfin.h | File | 18.93 KB | 0644 |
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checksum.h | File | 899 B | 0644 |
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clkdev.h | File | 318 B | 0644 |
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clocks.h | File | 1.66 KB | 0644 |
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cmpxchg.h | File | 3.2 KB | 0644 |
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context.S | File | 5.92 KB | 0644 |
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cplb.h | File | 4.86 KB | 0644 |
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cplbinit.h | File | 1.6 KB | 0644 |
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cpu.h | File | 443 B | 0644 |
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def_LPBlackfin.h | File | 28.6 KB | 0644 |
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delay.h | File | 917 B | 0644 |
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dma-mapping.h | File | 1.09 KB | 0644 |
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dma.h | File | 9.28 KB | 0644 |
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dpmc.h | File | 18.24 KB | 0644 |
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early_printk.h | File | 1.09 KB | 0644 |
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elf.h | File | 4.88 KB | 0644 |
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entry.h | File | 5.27 KB | 0644 |
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exec.h | File | 37 B | 0644 |
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fixed_code.h | File | 806 B | 0644 |
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flat.h | File | 1.41 KB | 0644 |
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ftrace.h | File | 1.37 KB | 0644 |
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gpio.h | File | 5.91 KB | 0644 |
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gptimers.h | File | 8.95 KB | 0644 |
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hardirq.h | File | 301 B | 0644 |
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io.h | File | 1.52 KB | 0644 |
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ipipe.h | File | 5.81 KB | 0644 |
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ipipe_base.h | File | 2.38 KB | 0644 |
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irq.h | File | 879 B | 0644 |
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irq_handler.h | File | 1.93 KB | 0644 |
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irqflags.h | File | 7.13 KB | 0644 |
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kgdb.h | File | 3.23 KB | 0644 |
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l1layout.h | File | 879 B | 0644 |
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linkage.h | File | 205 B | 0644 |
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mem_init.h | File | 13.1 KB | 0644 |
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mem_map.h | File | 1.73 KB | 0644 |
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mmu.h | File | 713 B | 0644 |
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mmu_context.h | File | 5.35 KB | 0644 |
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module.h | File | 410 B | 0644 |
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nand.h | File | 895 B | 0644 |
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nmi.h | File | 195 B | 0644 |
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page.h | File | 546 B | 0644 |
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page_offset.h | File | 192 B | 0644 |
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pci.h | File | 310 B | 0644 |
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pda.h | File | 1.86 KB | 0644 |
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perf_event.h | File | 23 B | 0644 |
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pgtable.h | File | 3 KB | 0644 |
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pm.h | File | 590 B | 0644 |
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portmux.h | File | 16.38 KB | 0644 |
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processor.h | File | 3.21 KB | 0644 |
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pseudo_instructions.h | File | 391 B | 0644 |
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ptrace.h | File | 1.19 KB | 0644 |
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reboot.h | File | 446 B | 0644 |
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rwlock.h | File | 142 B | 0644 |
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scb.h | File | 445 B | 0644 |
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sections.h | File | 2 KB | 0644 |
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segment.h | File | 226 B | 0644 |
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smp.h | File | 1.34 KB | 0644 |
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spinlock.h | File | 1.87 KB | 0644 |
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spinlock_types.h | File | 495 B | 0644 |
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string.h | File | 1.04 KB | 0644 |
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switch_to.h | File | 997 B | 0644 |
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syscall.h | File | 2.15 KB | 0644 |
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thread_info.h | File | 2.66 KB | 0644 |
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time.h | File | 1.33 KB | 0644 |
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timex.h | File | 477 B | 0644 |
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tlb.h | File | 481 B | 0644 |
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tlbflush.h | File | 88 B | 0644 |
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trace.h | File | 2.67 KB | 0644 |
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traps.h | File | 4.87 KB | 0644 |
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uaccess.h | File | 5.79 KB | 0644 |
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unistd.h | File | 523 B | 0644 |
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vga.h | File | 29 B | 0644 |
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