https://bitbucket.org/hudson/magic-lantern
Tip revision: 989de1b205e0455a30ab8e9d9c1277d67c285b3d authored by a1ex on 22 February 2014, 00:05:50 UTC
Close branch ml-cbr-backend.
Close branch ml-cbr-backend.
Tip revision: 989de1b
edmac.c
#include "dryos.h"
#include "edmac.h"
#if defined(CONFIG_5D3) || defined(CONFIG_6D) /* 6D + 5D3 are Identical */
#define WRITE(x) (x)
#define READ(x) (0x80000000 | (x))
#define IS_USED(x) ((x) != 0xFFFFFFFF)
#define IS_WRITE(x) (((x) & 0x80000000) == 0)
#define IS_READ(x) (((x) & 0x80000000) != 0)
/* channel usage for 5D3 */
static uint32_t edmac_chanlist[] =
{
WRITE(0), WRITE(1), WRITE(2), WRITE(3), WRITE(4), WRITE(5), WRITE(6), 0xFFFFFFFF,
READ(0), READ(1), READ(2), READ(3), READ(4), READ(5), 0xFFFFFFFF, 0xFFFFFFFF,
WRITE(7), WRITE(8), WRITE(9), WRITE(10), WRITE(11), WRITE(12), WRITE(13), 0xFFFFFFFF,
READ(6), READ(7), READ(8), READ(9), READ(10), READ(11), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
WRITE(14), WRITE(15), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
READ(12), READ(13), READ(14), READ(15), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF
};
uint32_t edmac_get_dir(uint32_t channel)
{
if(!IS_USED(edmac_chanlist[channel]))
{
return EDMAC_DIR_UNUSED;
}
if(IS_WRITE(edmac_chanlist[channel]))
{
return EDMAC_DIR_WRITE;
}
if(IS_READ(edmac_chanlist[channel]))
{
return EDMAC_DIR_READ;
}
return EDMAC_DIR_UNUSED;
}
#endif
uint32_t edmac_get_base(uint32_t channel)
{
uint32_t bases[] = { 0xC0F04000, 0xC0F26000, 0xC0F30000 };
uint32_t edmac_block = channel >> 4;
uint32_t edmac_num = channel & 0x0F;
return bases[edmac_block] + (edmac_num << 8);
}
uint32_t edmac_get_state(uint32_t channel)
{
/* this one is retrieved by EngDrvIn (reading directly from the register, not the cached value) */
return MEM(edmac_get_base(channel) + 0x00);
}
uint32_t edmac_get_flags(uint32_t channel)
{
return shamem_read(edmac_get_base(channel) + 0x04);
}
uint32_t edmac_get_address(uint32_t channel)
{
return shamem_read(edmac_get_base(channel) + 0x08);
}
uint32_t edmac_get_length(uint32_t channel)
{
return shamem_read(edmac_get_base(channel) + 0x10);
}
uint32_t edmac_get_connection(uint32_t channel, uint32_t direction)
{
uint32_t addr = 0;
if(direction == EDMAC_DIR_READ)
{
uint32_t dest_chan = 0;
uint32_t edmac_num = channel & 0x0F;
if ( channel >= 24 )
{
if ( channel < 40 )
{
dest_chan = edmac_num - 2;
}
else
{
dest_chan = edmac_num + 4;
}
}
else
{
dest_chan = channel - 8;
}
for(uint32_t pos = 0; pos < 48; pos++)
{
addr = 0xC0F05020 + (4 * pos);
uint32_t dst = shamem_read(addr);
if(dst == dest_chan)
{
return pos;
}
}
return 0xFF;
}
else
{
if ( channel < 16 )
{
addr = 0xC0F05000 + (4 * channel);
}
if ( channel != 16 )
{
uint32_t pos = 0;
if ( channel < 32 )
{
pos = channel - 1;
}
else
{
pos = channel + 6;
}
addr = 0xC0F05200 + (4 * (pos & 0x0F));
}
else
{
addr = 0xC0F0501C;
}
}
return shamem_read(addr);
}