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Faster HPS-FPGA block transfers.

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This commit is contained in:
sorgelig
2020-08-03 10:43:16 +08:00
parent 1595d71f78
commit f320a94ee3
6 changed files with 320 additions and 76 deletions
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48
spi.cpp
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@@ -192,52 +192,12 @@ void spi_write(const uint8_t *addr, uint16_t len, int wide)
void spi_block_read(uint8_t *addr, int wide)
{
if (wide)
{
uint16_t len16 = 256;
uint16_t *a16 = (uint16_t*)addr;
while (len16--) *a16++ = fpga_spi_fast(0);
}
else
{
uint16_t len = 512;
while (len--) *addr++ = fpga_spi_fast(0);
}
if (wide) fpga_spi_fast_block_read((uint16_t*)addr, 256);
else fpga_spi_fast_block_read_8(addr, 512);
}
void spi_block_write(const uint8_t *addr, int wide)
{
if (wide)
{
uint16_t len16 = 256;
uint16_t *a16 = (uint16_t*)addr;
while (len16--) fpga_spi_fast(*a16++);
}
else
{
uint16_t len = 512;
while (len--) fpga_spi_fast(*addr++);
}
}
void spi_block_write_16be(const uint16_t *addr)
{
uint16_t len = 256;
uint16_t tmp;
while (len--)
{
tmp = *addr++;
fpga_spi_fast(SWAPW(tmp));
}
}
void spi_block_read_16be(uint16_t *addr)
{
uint16_t len = 256;
uint16_t tmp;
while (len--)
{
tmp = fpga_spi_fast(0xFFFF);
*addr++ = SWAPW(tmp);
}
if (wide) fpga_spi_fast_block_write((const uint16_t*)addr, 256);
else fpga_spi_fast_block_write_8(addr, 512);
}