diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/blackfin/include/asm/dma.h | 137 |
1 files changed, 117 insertions, 20 deletions
diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h index dac0c97242bb..40e9c2bbc6e3 100644 --- a/arch/blackfin/include/asm/dma.h +++ b/arch/blackfin/include/asm/dma.h @@ -22,12 +22,22 @@ #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 @@ -36,26 +46,80 @@ #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 short cfg; - unsigned short x_count; - short x_modify; - unsigned short y_count; - short y_modify; + 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 */ @@ -92,6 +156,7 @@ struct dma_register { unsigned short dummy9; unsigned long reserved3; +#endif }; @@ -131,23 +196,23 @@ 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 short x_count) +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 short y_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, short x_modify) +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, short y_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 short config) +static inline void set_dma_config(unsigned int channel, unsigned DMA_MMR_SIZE_TYPE config) { dma_ch[channel].regs->cfg = config; } @@ -156,23 +221,55 @@ static inline void set_dma_curr_addr(unsigned int channel, unsigned long addr) dma_ch[channel].regs->curr_addr_ptr = addr; } -static inline unsigned short +#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 width, char syncmode) + char intr_mode, char dma_mode, char mem_width, char syncmode) { - return (direction << 1) | (width << 2) | (dma_mode << 4) | +#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 short get_dma_curr_irqstat(unsigned int channel) +static inline unsigned DMA_MMR_SIZE_TYPE get_dma_curr_irqstat(unsigned int channel) { return dma_ch[channel].regs->irq_status; } -static inline unsigned short get_dma_curr_xcount(unsigned int channel) +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 short get_dma_curr_ycount(unsigned int channel) +static inline unsigned DMA_MMR_SIZE_TYPE get_dma_curr_ycount(unsigned int channel) { return dma_ch[channel].regs->curr_y_count; } @@ -184,7 +281,7 @@ static inline void *get_dma_curr_desc_ptr(unsigned int channel) { return dma_ch[channel].regs->curr_desc_ptr; } -static inline unsigned short get_dma_config(unsigned int channel) +static inline unsigned DMA_MMR_SIZE_TYPE get_dma_config(unsigned int channel) { return dma_ch[channel].regs->cfg; } @@ -203,8 +300,8 @@ static inline void set_dma_sg(unsigned int channel, struct dmasg *sg, int ndsize dma_ch[channel].regs->next_desc_ptr = sg; dma_ch[channel].regs->cfg = - (dma_ch[channel].regs->cfg & ~(0xf << 8)) | - ((ndsize & 0xf) << 8); + (dma_ch[channel].regs->cfg & ~NDSIZE) | + ((ndsize << NDSIZE_OFFSET) & NDSIZE); } static inline int dma_channel_active(unsigned int channel) @@ -239,7 +336,7 @@ static inline void dma_enable_irq(unsigned int channel) } static inline void clear_dma_irqstat(unsigned int channel) { - dma_ch[channel].regs->irq_status = DMA_DONE | DMA_ERR; + dma_ch[channel].regs->irq_status = DMA_DONE | DMA_ERR | DMA_PIRQ; } void *dma_memcpy(void *dest, const void *src, size_t count); |