aboutsummaryrefslogtreecommitdiff
path: root/arch/blackfin/kernel/bfin_dma_5xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/blackfin/kernel/bfin_dma_5xx.c')
-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c81
1 files changed, 65 insertions, 16 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 7cf02f02a1d..e19164fb4cd 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -73,6 +73,11 @@ static int __init blackfin_dma_init(void)
/* Mark MEMDMA Channel 0 as requested since we're using it internally */
dma_ch[CH_MEM_STREAM0_DEST].chan_status = DMA_CHANNEL_REQUESTED;
dma_ch[CH_MEM_STREAM0_SRC].chan_status = DMA_CHANNEL_REQUESTED;
+
+#if defined(CONFIG_DEB_DMA_URGENT)
+ bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE()
+ | DEB1_URGENT | DEB2_URGENT | DEB3_URGENT);
+#endif
return 0;
}
@@ -265,10 +270,23 @@ void set_dma_next_desc_addr(unsigned int channel, unsigned long addr)
dma_ch[channel].regs->next_desc_ptr = addr;
SSYNC();
- pr_debug("set_dma_start_addr() : END\n");
+ pr_debug("set_dma_next_desc_addr() : END\n");
}
EXPORT_SYMBOL(set_dma_next_desc_addr);
+void set_dma_curr_desc_addr(unsigned int channel, unsigned long addr)
+{
+ pr_debug("set_dma_curr_desc_addr() : BEGIN \n");
+
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ dma_ch[channel].regs->curr_desc_ptr = addr;
+ SSYNC();
+ pr_debug("set_dma_curr_desc_addr() : END\n");
+}
+EXPORT_SYMBOL(set_dma_curr_desc_addr);
+
void set_dma_x_count(unsigned int channel, unsigned short x_count)
{
BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
@@ -345,6 +363,16 @@ void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg)
}
EXPORT_SYMBOL(set_dma_sg);
+void set_dma_curr_addr(unsigned int channel, unsigned long addr)
+{
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ dma_ch[channel].regs->curr_addr_ptr = addr;
+ SSYNC();
+}
+EXPORT_SYMBOL(set_dma_curr_addr);
+
/*------------------------------------------------------------------------------
* Get the DMA status of a specific DMA channel from the system.
*-----------------------------------------------------------------------------*/
@@ -408,6 +436,10 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
blackfin_dcache_flush_range((unsigned int)src,
(unsigned int)(src + size));
+ if ((unsigned long)dest < memory_end)
+ blackfin_dcache_invalidate_range((unsigned int)dest,
+ (unsigned int)(dest + size));
+
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
if ((unsigned long)src < (unsigned long)dest)
@@ -515,6 +547,8 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
}
}
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE))
;
@@ -524,9 +558,6 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
bfin_write_MDMA_S0_CONFIG(0);
bfin_write_MDMA_D0_CONFIG(0);
- if ((unsigned long)dest < memory_end)
- blackfin_dcache_invalidate_range((unsigned int)dest,
- (unsigned int)(dest + size));
local_irq_restore(flags);
return dest;
@@ -555,13 +586,14 @@ void *safe_dma_memcpy(void *dest, const void *src, size_t size)
}
EXPORT_SYMBOL(safe_dma_memcpy);
-void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsb(unsigned long 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);
+ 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);
@@ -576,6 +608,8 @@ void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_8);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_8);
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -588,10 +622,13 @@ void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
EXPORT_SYMBOL(dma_outsb);
-void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insb(unsigned long addr, void *buf, unsigned short len)
{
unsigned long flags;
+ blackfin_dcache_invalidate_range((unsigned int)buf,
+ (unsigned int)(buf) + len);
+
local_irq_save(flags);
bfin_write_MDMA_D0_START_ADDR(buf);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -606,7 +643,7 @@ void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_8);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_8);
- blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+ SSYNC();
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
@@ -619,13 +656,14 @@ void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_insb);
-void dma_outsw(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsw(unsigned long 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);
+ blackfin_dcache_flush_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(short));
bfin_write_MDMA_D0_START_ADDR(addr);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -640,6 +678,8 @@ void dma_outsw(void __iomem *addr, const void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_16);
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -651,10 +691,13 @@ void dma_outsw(void __iomem *addr, const void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_outsw);
-void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insw(unsigned long addr, void *buf, unsigned short len)
{
unsigned long flags;
+ blackfin_dcache_invalidate_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(short));
+
local_irq_save(flags);
bfin_write_MDMA_D0_START_ADDR(buf);
@@ -670,7 +713,7 @@ void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_16);
- blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+ SSYNC();
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
@@ -683,13 +726,14 @@ void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_insw);
-void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsl(unsigned long 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);
+ blackfin_dcache_flush_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(long));
bfin_write_MDMA_D0_START_ADDR(addr);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -704,6 +748,8 @@ void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_32);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_32);
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -715,10 +761,13 @@ void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_outsl);
-void dma_insl(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insl(unsigned long addr, void *buf, unsigned short len)
{
unsigned long flags;
+ blackfin_dcache_invalidate_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(long));
+
local_irq_save(flags);
bfin_write_MDMA_D0_START_ADDR(buf);
@@ -734,7 +783,7 @@ void dma_insl(const void __iomem *addr, void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_32);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_32);
- blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+ SSYNC();
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 12:14:40 +0000