| Line 30... |
Line 30... |
#include "pic.h"
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#include "pic.h"
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#include "abstract.h"
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#include "abstract.h"
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#include "fields.h"
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#include "fields.h"
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/* The representation of the DMA controllers */
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/* The representation of the DMA controllers */
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static struct dma_controller dmas[NR_DMAS];
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static struct dma_controller dmas[MAX_DMAS];
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static unsigned long dma_read32( unsigned long addr );
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static unsigned long dma_read32( unsigned long addr );
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static void dma_write32( unsigned long addr, unsigned long value );
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static void dma_write32( unsigned long addr, unsigned long value );
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static unsigned long dma_read_ch_csr( struct dma_channel *channel );
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static unsigned long dma_read_ch_csr( struct dma_channel *channel );
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| Line 115... |
Line 115... |
unsigned long dma_read32( unsigned long addr )
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unsigned long dma_read32( unsigned long addr )
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{
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{
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unsigned i;
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unsigned i;
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struct dma_controller *dma = NULL;
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struct dma_controller *dma = NULL;
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for ( i = 0; i < NR_DMAS && dma == NULL; ++ i ) {
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for ( i = 0; i < MAX_DMAS && dma == NULL; ++ i ) {
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if ( addr >= dmas[i].baseaddr && addr < dmas[i].baseaddr + DMA_ADDR_SPACE )
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if ( addr >= dmas[i].baseaddr && addr < dmas[i].baseaddr + DMA_ADDR_SPACE )
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dma = &(dmas[i]);
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dma = &(dmas[i]);
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}
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}
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/* verify we found a controller */
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/* verify we found a controller */
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| Line 189... |
Line 189... |
{
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{
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unsigned i;
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unsigned i;
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struct dma_controller *dma = NULL;
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struct dma_controller *dma = NULL;
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/* Find which controller this is */
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/* Find which controller this is */
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for ( i = 0; i < NR_DMAS && dma == NULL; ++ i ) {
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for ( i = 0; i < MAX_DMAS && dma == NULL; ++ i ) {
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if ( (addr >= dmas[i].baseaddr) && (addr < dmas[i].baseaddr + DMA_ADDR_SPACE) )
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if ( (addr >= dmas[i].baseaddr) && (addr < dmas[i].baseaddr + DMA_ADDR_SPACE) )
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dma = &(dmas[i]);
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dma = &(dmas[i]);
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}
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}
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/* verify we found a controller */
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/* verify we found a controller */
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| Line 293... |
Line 293... |
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/* Simulation hook. Must be called every clock cycle to simulate DMA. */
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/* Simulation hook. Must be called every clock cycle to simulate DMA. */
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void dma_clock()
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void dma_clock()
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{
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{
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unsigned i;
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unsigned i;
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for ( i = 0; i < NR_DMAS; ++ i ) {
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for ( i = 0; i < MAX_DMAS; ++ i ) {
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if ( dmas[i].baseaddr != 0 )
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if ( dmas[i].baseaddr != 0 )
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dma_controller_clock( &(dmas[i]) );
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dma_controller_clock( &(dmas[i]) );
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}
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}
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}
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}
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