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enabled MCDMA for fec

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This commit is contained in:
Markus Fröschle
2014-01-01 13:02:37 +00:00
parent 45dc5b564a
commit 4d37bfcf42
5 changed files with 70 additions and 8 deletions
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54
dma/dma.c
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@@ -48,12 +48,53 @@ static char used_reqs[32];
static struct dma_channel dma_channel[NCHANNELS] =
{
{-1,NULL}, {-1,NULL}, {-1,NULL}, {-1,NULL},
{-1,NULL}, {-1,NULL}, {-1,NULL}, {-1,NULL},
{-1,NULL}, {-1,NULL}, {-1,NULL}, {-1,NULL},
{-1,NULL}, {-1,NULL}, {-1,NULL}, {-1,NULL},
{-1, NULL}, {-1, NULL}, {-1, NULL}, {-1, NULL},
{-1, NULL}, {-1, NULL}, {-1, NULL}, {-1, NULL},
{-1, NULL}, {-1, NULL}, {-1, NULL}, {-1, NULL},
{-1, NULL}, {-1, NULL}, {-1, NULL}, {-1, NULL},
};
/********************************************************************/
/*
* Enable all DMA interrupts
*
* Parameters:
* pri Interrupt Priority
* lvl Interrupt Level
*/
void dma_irq_enable(uint8_t lvl, uint8_t pri)
{
/* Setup the DMA ICR (#48) */
MCF_INTC_ICR48 = 0
| MCF_INTC_ICR_IP(pri)
| MCF_INTC_ICR_IL(lvl);
/* Unmask all task interrupts */
MCF_DMA_DIMR = 0;
/* Clear the interrupt pending register */
MCF_DMA_DIPR = 0;
/* Unmask the DMA interrupt in the interrupt controller */
MCF_INTC_IMRH &= ~MCF_INTC_IMRH_INT_MASK48;
}
/********************************************************************/
/*
* Disable all DMA interrupts
*/
void dma_irq_disable(void)
{
/* Mask all task interrupts */
MCF_DMA_DIMR = (uint32_t) ~0;
/* Clear any pending task interrupts */
MCF_DMA_DIPR = (uint32_t) ~0;
/* Mask the DMA interrupt in the interrupt controller */
MCF_INTC_IMRH |= MCF_INTC_IMRH_INT_MASK48;
}
int dma_set_initiator(int initiator)
{
switch (initiator)
@@ -365,6 +406,7 @@ void dma_clear_channel(int channel)
dma_channel[channel].handler = NULL;
}
}
/*
* Return the channel being initiated by the given requestor
*
@@ -379,7 +421,7 @@ int dma_get_channel(int requestor)
{
uint32_t i;
for (i=0; i<NCHANNELS; ++i)
for (i = 0; i < NCHANNELS; ++i)
{
if (dma_channel[i].req == requestor)
return i;
@@ -398,7 +440,7 @@ void dma_free_channel(int requestor)
{
uint32_t i;
for (i=0; i<NCHANNELS; ++i)
for (i=0; i < NCHANNELS; ++i)
{
if (dma_channel[i].req == requestor)
{