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Diffstat (limited to 'arch/blackfin/include/asm/dma.h')
-rw-r--r-- | arch/blackfin/include/asm/dma.h | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h deleted file mode 100644 index 40e9c2bbc6e3..000000000000 --- a/arch/blackfin/include/asm/dma.h +++ /dev/null @@ -1,349 +0,0 @@ -/* - * 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 |