diff options
Diffstat (limited to 'arch/blackfin/kernel/bfin_dma_5xx.c')
| -rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 251 |
1 files changed, 23 insertions, 228 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c index 069a896a8f2..7cf02f02a1d 100644 --- a/arch/blackfin/kernel/bfin_dma_5xx.c +++ b/arch/blackfin/kernel/bfin_dma_5xx.c @@ -34,6 +34,7 @@ #include <linux/kernel.h> #include <linux/param.h> +#include <asm/blackfin.h> #include <asm/dma.h> #include <asm/cacheflush.h> @@ -45,67 +46,6 @@ ***************************************************************************/ static struct dma_channel dma_ch[MAX_BLACKFIN_DMA_CHANNEL]; -#if defined (CONFIG_BF561) -static struct dma_register *base_addr[MAX_BLACKFIN_DMA_CHANNEL] = { - (struct dma_register *) DMA1_0_NEXT_DESC_PTR, - (struct dma_register *) DMA1_1_NEXT_DESC_PTR, - (struct dma_register *) DMA1_2_NEXT_DESC_PTR, - (struct dma_register *) DMA1_3_NEXT_DESC_PTR, - (struct dma_register *) DMA1_4_NEXT_DESC_PTR, - (struct dma_register *) DMA1_5_NEXT_DESC_PTR, - (struct dma_register *) DMA1_6_NEXT_DESC_PTR, - (struct dma_register *) DMA1_7_NEXT_DESC_PTR, - (struct dma_register *) DMA1_8_NEXT_DESC_PTR, - (struct dma_register *) DMA1_9_NEXT_DESC_PTR, - (struct dma_register *) DMA1_10_NEXT_DESC_PTR, - (struct dma_register *) DMA1_11_NEXT_DESC_PTR, - (struct dma_register *) DMA2_0_NEXT_DESC_PTR, - (struct dma_register *) DMA2_1_NEXT_DESC_PTR, - (struct dma_register *) DMA2_2_NEXT_DESC_PTR, - (struct dma_register *) DMA2_3_NEXT_DESC_PTR, - (struct dma_register *) DMA2_4_NEXT_DESC_PTR, - (struct dma_register *) DMA2_5_NEXT_DESC_PTR, - (struct dma_register *) DMA2_6_NEXT_DESC_PTR, - (struct dma_register *) DMA2_7_NEXT_DESC_PTR, - (struct dma_register *) DMA2_8_NEXT_DESC_PTR, - (struct dma_register *) DMA2_9_NEXT_DESC_PTR, - (struct dma_register *) DMA2_10_NEXT_DESC_PTR, - (struct dma_register *) DMA2_11_NEXT_DESC_PTR, - (struct dma_register *) MDMA1_D0_NEXT_DESC_PTR, - (struct dma_register *) MDMA1_S0_NEXT_DESC_PTR, - (struct dma_register *) MDMA1_D1_NEXT_DESC_PTR, - (struct dma_register *) MDMA1_S1_NEXT_DESC_PTR, - (struct dma_register *) MDMA2_D0_NEXT_DESC_PTR, - (struct dma_register *) MDMA2_S0_NEXT_DESC_PTR, - (struct dma_register *) MDMA2_D1_NEXT_DESC_PTR, - (struct dma_register *) MDMA2_S1_NEXT_DESC_PTR, - (struct dma_register *) IMDMA_D0_NEXT_DESC_PTR, - (struct dma_register *) IMDMA_S0_NEXT_DESC_PTR, - (struct dma_register *) IMDMA_D1_NEXT_DESC_PTR, - (struct dma_register *) IMDMA_S1_NEXT_DESC_PTR, -}; -#else -static struct dma_register *base_addr[MAX_BLACKFIN_DMA_CHANNEL] = { - (struct dma_register *) DMA0_NEXT_DESC_PTR, - (struct dma_register *) DMA1_NEXT_DESC_PTR, - (struct dma_register *) DMA2_NEXT_DESC_PTR, - (struct dma_register *) DMA3_NEXT_DESC_PTR, - (struct dma_register *) DMA4_NEXT_DESC_PTR, - (struct dma_register *) DMA5_NEXT_DESC_PTR, - (struct dma_register *) DMA6_NEXT_DESC_PTR, - (struct dma_register *) DMA7_NEXT_DESC_PTR, -#if (defined(CONFIG_BF537) || defined(CONFIG_BF534) || defined(CONFIG_BF536)) - (struct dma_register *) DMA8_NEXT_DESC_PTR, - (struct dma_register *) DMA9_NEXT_DESC_PTR, - (struct dma_register *) DMA10_NEXT_DESC_PTR, - (struct dma_register *) DMA11_NEXT_DESC_PTR, -#endif - (struct dma_register *) MDMA_D0_NEXT_DESC_PTR, - (struct dma_register *) MDMA_S0_NEXT_DESC_PTR, - (struct dma_register *) MDMA_D1_NEXT_DESC_PTR, - (struct dma_register *) MDMA_S1_NEXT_DESC_PTR, -}; -#endif /*------------------------------------------------------------------------------ * Set the Buffer Clear bit in the Configuration register of specific DMA @@ -138,149 +78,6 @@ static int __init blackfin_dma_init(void) arch_initcall(blackfin_dma_init); -/* - * Form the channel find the irq number for that channel. - */ -#if !defined(CONFIG_BF561) - -static int bf533_channel2irq(unsigned int channel) -{ - int ret_irq = -1; - - switch (channel) { - case CH_PPI: - ret_irq = IRQ_PPI; - break; - -#if (defined(CONFIG_BF537) || defined(CONFIG_BF534) || defined(CONFIG_BF536)) - case CH_EMAC_RX: - ret_irq = IRQ_MAC_RX; - break; - - case CH_EMAC_TX: - ret_irq = IRQ_MAC_TX; - break; - - case CH_UART1_RX: - ret_irq = IRQ_UART1_RX; - break; - - case CH_UART1_TX: - ret_irq = IRQ_UART1_TX; - break; -#endif - - case CH_SPORT0_RX: - ret_irq = IRQ_SPORT0_RX; - break; - - case CH_SPORT0_TX: - ret_irq = IRQ_SPORT0_TX; - break; - - case CH_SPORT1_RX: - ret_irq = IRQ_SPORT1_RX; - break; - - case CH_SPORT1_TX: - ret_irq = IRQ_SPORT1_TX; - break; - - case CH_SPI: - ret_irq = IRQ_SPI; - break; - - case CH_UART_RX: - ret_irq = IRQ_UART_RX; - break; - - case CH_UART_TX: - ret_irq = IRQ_UART_TX; - break; - - case CH_MEM_STREAM0_SRC: - case CH_MEM_STREAM0_DEST: - ret_irq = IRQ_MEM_DMA0; - break; - - case CH_MEM_STREAM1_SRC: - case CH_MEM_STREAM1_DEST: - ret_irq = IRQ_MEM_DMA1; - break; - } - return ret_irq; -} - -# define channel2irq(channel) bf533_channel2irq(channel) - -#else - -static int bf561_channel2irq(unsigned int channel) -{ - int ret_irq = -1; - - switch (channel) { - case CH_PPI0: - ret_irq = IRQ_PPI0; - break; - case CH_PPI1: - ret_irq = IRQ_PPI1; - break; - case CH_SPORT0_RX: - ret_irq = IRQ_SPORT0_RX; - break; - case CH_SPORT0_TX: - ret_irq = IRQ_SPORT0_TX; - break; - case CH_SPORT1_RX: - ret_irq = IRQ_SPORT1_RX; - break; - case CH_SPORT1_TX: - ret_irq = IRQ_SPORT1_TX; - break; - case CH_SPI: - ret_irq = IRQ_SPI; - break; - case CH_UART_RX: - ret_irq = IRQ_UART_RX; - break; - case CH_UART_TX: - ret_irq = IRQ_UART_TX; - break; - - case CH_MEM_STREAM0_SRC: - case CH_MEM_STREAM0_DEST: - ret_irq = IRQ_MEM_DMA0; - break; - case CH_MEM_STREAM1_SRC: - case CH_MEM_STREAM1_DEST: - ret_irq = IRQ_MEM_DMA1; - break; - case CH_MEM_STREAM2_SRC: - case CH_MEM_STREAM2_DEST: - ret_irq = IRQ_MEM_DMA2; - break; - case CH_MEM_STREAM3_SRC: - case CH_MEM_STREAM3_DEST: - ret_irq = IRQ_MEM_DMA3; - break; - - case CH_IMEM_STREAM0_SRC: - case CH_IMEM_STREAM0_DEST: - ret_irq = IRQ_IMEM_DMA0; - break; - case CH_IMEM_STREAM1_SRC: - case CH_IMEM_STREAM1_DEST: - ret_irq = IRQ_IMEM_DMA1; - break; - } - return ret_irq; -} - -# define channel2irq(channel) bf561_channel2irq(channel) - -#endif - /*------------------------------------------------------------------------------ * Request the specific DMA channel from the system. *-----------------------------------------------------------------------------*/ @@ -535,7 +332,7 @@ set_bfin_dma_config(char direction, char flow_mode, } EXPORT_SYMBOL(set_bfin_dma_config); -void set_dma_sg(unsigned int channel, struct dmasg * sg, int nr_sg) +void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg) { BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE && channel < MAX_BLACKFIN_DMA_CHANNEL)); @@ -604,7 +401,7 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size) if (size <= 0) return NULL; - + local_irq_save(flags); if ((unsigned long)src < memory_end) @@ -748,7 +545,6 @@ void *dma_memcpy(void *dest, const void *src, size_t size) addr = __dma_memcpy(dest+bulk, src+bulk, rest); return addr; } - EXPORT_SYMBOL(dma_memcpy); void *safe_dma_memcpy(void *dest, const void *src, size_t size) @@ -761,14 +557,13 @@ EXPORT_SYMBOL(safe_dma_memcpy); void dma_outsb(void __iomem *addr, const void *buf, unsigned short len) { - unsigned long flags; - + local_irq_save(flags); - - blackfin_dcache_flush_range((unsigned int)buf,(unsigned int)(buf) + len); - bfin_write_MDMA_D0_START_ADDR(addr); + blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len); + + bfin_write_MDMA_D0_START_ADDR(addr); bfin_write_MDMA_D0_X_COUNT(len); bfin_write_MDMA_D0_X_MODIFY(0); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); @@ -796,9 +591,9 @@ EXPORT_SYMBOL(dma_outsb); void dma_insb(const void __iomem *addr, void *buf, unsigned short len) { unsigned long flags; - + local_irq_save(flags); - bfin_write_MDMA_D0_START_ADDR(buf); + bfin_write_MDMA_D0_START_ADDR(buf); bfin_write_MDMA_D0_X_COUNT(len); bfin_write_MDMA_D0_X_MODIFY(1); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); @@ -827,12 +622,12 @@ EXPORT_SYMBOL(dma_insb); void dma_outsw(void __iomem *addr, const void *buf, unsigned short len) { unsigned long flags; - + local_irq_save(flags); - - blackfin_dcache_flush_range((unsigned int)buf,(unsigned int)(buf) + len); - bfin_write_MDMA_D0_START_ADDR(addr); + blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len); + + bfin_write_MDMA_D0_START_ADDR(addr); bfin_write_MDMA_D0_X_COUNT(len); bfin_write_MDMA_D0_X_MODIFY(0); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); @@ -859,10 +654,10 @@ EXPORT_SYMBOL(dma_outsw); void dma_insw(const void __iomem *addr, void *buf, unsigned short len) { unsigned long flags; - + local_irq_save(flags); - - bfin_write_MDMA_D0_START_ADDR(buf); + + bfin_write_MDMA_D0_START_ADDR(buf); bfin_write_MDMA_D0_X_COUNT(len); bfin_write_MDMA_D0_X_MODIFY(2); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); @@ -891,12 +686,12 @@ EXPORT_SYMBOL(dma_insw); void dma_outsl(void __iomem *addr, const void *buf, unsigned short len) { unsigned long flags; - + local_irq_save(flags); - - blackfin_dcache_flush_range((unsigned int)buf,(unsigned int)(buf) + len); - bfin_write_MDMA_D0_START_ADDR(addr); + blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len); + + bfin_write_MDMA_D0_START_ADDR(addr); bfin_write_MDMA_D0_X_COUNT(len); bfin_write_MDMA_D0_X_MODIFY(0); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); @@ -923,10 +718,10 @@ EXPORT_SYMBOL(dma_outsl); void dma_insl(const void __iomem *addr, void *buf, unsigned short len) { unsigned long flags; - + local_irq_save(flags); - - bfin_write_MDMA_D0_START_ADDR(buf); + + bfin_write_MDMA_D0_START_ADDR(buf); bfin_write_MDMA_D0_X_COUNT(len); bfin_write_MDMA_D0_X_MODIFY(4); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); |