static void cvm_oct_spi_poll(struct net_device *dev)
{
static int spi4000_port;
struct octeon_ethernet *priv = netdev_priv(dev);
int interface;
for (interface = 0; interface < 2; interface++) {
if ((priv->port == interface * 16) && need_retrain[interface]) {
if (cvmx_spi_restart_interface
(interface, CVMX_SPI_MODE_DUPLEX, 10) == 0) {
need_retrain[interface] = 0;
cvm_oct_spi_enable_error_reporting(interface);
}
}
/*
* The SPI4000 TWSI interface is very slow. In order
* not to bring the system to a crawl, we only poll a
* single port every second. This means negotiation
* speed changes take up to 10 seconds, but at least
* we don't waste absurd amounts of time waiting for
* TWSI.
*/
if (priv->port == spi4000_port) {
/*
* This function does nothing if it is called on an
* interface without a SPI4000.
*/
cvmx_spi4000_check_speed(interface, priv->port);
/*
* Normal ordering increments. By decrementing
* we only match once per iteration.
*/
spi4000_port--;
if (spi4000_port < 0)
spi4000_port = 10;
}
}
}
/**
* Return the link state of an IPD/PKO port as returned by
* auto negotiation. The result of this function may not match
* Octeon's link config if auto negotiation has changed since
* the last call to cvmx_helper_link_set().
*
* @ipd_port: IPD/PKO port to query
*
* Returns Link state
*/
cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port)
{
cvmx_helper_link_info_t result;
int interface = cvmx_helper_get_interface_num(ipd_port);
int index = cvmx_helper_get_interface_index_num(ipd_port);
result.u64 = 0;
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) {
/* The simulator gives you a simulated full duplex link */
result.s.link_up = 1;
result.s.full_duplex = 1;
result.s.speed = 10000;
} else if (cvmx_spi4000_is_present(interface)) {
union cvmx_gmxx_rxx_rx_inbnd inband =
cvmx_spi4000_check_speed(interface, index);
result.s.link_up = inband.s.status;
result.s.full_duplex = inband.s.duplex;
switch (inband.s.speed) {
case 0: /* 10 Mbps */
result.s.speed = 10;
break;
case 1: /* 100 Mbps */
result.s.speed = 100;
break;
case 2: /* 1 Gbps */
result.s.speed = 1000;
break;
case 3: /* Illegal */
result.s.speed = 0;
result.s.link_up = 0;
break;
}
} else {
/* For generic SPI we can't determine the link, just return some
sane results */
result.s.link_up = 1;
result.s.full_duplex = 1;
result.s.speed = 10000;
}
return result;
}
cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port)
{
cvmx_helper_link_info_t result;
int interface = cvmx_helper_get_interface_num(ipd_port);
int index = cvmx_helper_get_interface_index_num(ipd_port);
result.u64 = 0;
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) {
/* */
result.s.link_up = 1;
result.s.full_duplex = 1;
result.s.speed = 10000;
} else if (cvmx_spi4000_is_present(interface)) {
union cvmx_gmxx_rxx_rx_inbnd inband =
cvmx_spi4000_check_speed(interface, index);
result.s.link_up = inband.s.status;
result.s.full_duplex = inband.s.duplex;
switch (inband.s.speed) {
case 0: /* */
result.s.speed = 10;
break;
case 1: /* */
result.s.speed = 100;
break;
case 2: /* */
result.s.speed = 1000;
break;
case 3: /* */
result.s.speed = 0;
result.s.link_up = 0;
break;
}
} else {
/*
*/
result.s.link_up = 1;
result.s.full_duplex = 1;
result.s.speed = 10000;
}
return result;
}
/**
* @INTERNAL
* Configure the SPI4000 PHYs
*/
static void __cvmx_spi4000_configure_phy(int interface)
{
int port;
/* We use separate loops below since it allows us to save a write
to the SPI4000 for each repeated value. This adds up to a couple
of seconds */
/* Update the link state before resets. It takes a while for the links to
come back after the resets. Most likely they'll come back the same as
they are now */
for (port=0; port < 10; port++)
cvmx_spi4000_check_speed(interface, port);
/* Enable RGMII DELAYS for TX_CLK and RX_CLK (see spec) */
for (port=0; port < 10; port++)
__cvmx_spi4000_mdio_write(interface, port, 0x14, 0x00e2);
/* Advertise pause and 100 Full Duplex. Don't advertise half duplex or 10Mbpa */
for (port=0; port < 10; port++)
__cvmx_spi4000_mdio_write(interface, port, 0x4, 0x0d01);
/* Enable PHY reset */
for (port=0; port < 10; port++)
__cvmx_spi4000_mdio_write(interface, port, 0x0, 0x9140);
}
