/**
* t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters
* @adapter: the adapter
*
* Retrieves various core SGE parameters in the form of hardware SGE
* register values. The caller is responsible for decoding these as
* needed. The SGE parameters are stored in @adapter->params.sge.
*/
int t4vf_get_sge_params(struct adapter *adapter)
{
struct sge_params *sge_params = &adapter->params.sge;
u32 params[7], vals[7];
int v;
params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_CONTROL));
params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_HOST_PAGE_SIZE));
params[2] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE0));
params[3] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE1));
params[4] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_0_AND_1));
params[5] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_2_AND_3));
params[6] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_4_AND_5));
v = t4vf_query_params(adapter, 7, params, vals);
if (v)
return v;
sge_params->sge_control = vals[0];
sge_params->sge_host_page_size = vals[1];
sge_params->sge_fl_buffer_size[0] = vals[2];
sge_params->sge_fl_buffer_size[1] = vals[3];
sge_params->sge_timer_value_0_and_1 = vals[4];
sge_params->sge_timer_value_2_and_3 = vals[5];
sge_params->sge_timer_value_4_and_5 = vals[6];
params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD));
v = t4vf_query_params(adapter, 1, params, vals);
if (v)
return v;
sge_params->sge_ingress_rx_threshold = vals[0];
return 0;
}
/**
* t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters
* @adapter: the adapter
*
* Retrieves various core SGE parameters in the form of hardware SGE
* register values. The caller is responsible for decoding these as
* needed. The SGE parameters are stored in @adapter->params.sge.
*/
int t4vf_get_sge_params(struct adapter *adapter)
{
struct sge_params *sge_params = &adapter->params.sge;
u32 params[7], vals[7];
int v;
params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_CONTROL));
params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_HOST_PAGE_SIZE));
params[2] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE0));
params[3] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE1));
params[4] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_0_AND_1));
params[5] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_2_AND_3));
params[6] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_4_AND_5));
v = t4vf_query_params(adapter, 7, params, vals);
if (v)
return v;
sge_params->sge_control = vals[0];
sge_params->sge_host_page_size = vals[1];
sge_params->sge_fl_buffer_size[0] = vals[2];
sge_params->sge_fl_buffer_size[1] = vals[3];
sge_params->sge_timer_value_0_and_1 = vals[4];
sge_params->sge_timer_value_2_and_3 = vals[5];
sge_params->sge_timer_value_4_and_5 = vals[6];
/* T4 uses a single control field to specify both the PCIe Padding and
* Packing Boundary. T5 introduced the ability to specify these
* separately with the Padding Boundary in SGE_CONTROL and and Packing
* Boundary in SGE_CONTROL2. So for T5 and later we need to grab
* SGE_CONTROL in order to determine how ingress packet data will be
* laid out in Packed Buffer Mode. Unfortunately, older versions of
* the firmware won't let us retrieve SGE_CONTROL2 so if we get a
* failure grabbing it we throw an error since we can't figure out the
* right value.
*/
if (!is_t4(adapter->params.chip)) {
params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_CONTROL2_A));
v = t4vf_query_params(adapter, 1, params, vals);
if (v != FW_SUCCESS) {
dev_err(adapter->pdev_dev,
"Unable to get SGE Control2; "
"probably old firmware.\n");
return v;
}
sge_params->sge_control2 = vals[0];
}
params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD));
params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ(SGE_CONM_CTRL));
v = t4vf_query_params(adapter, 2, params, vals);
if (v)
return v;
sge_params->sge_ingress_rx_threshold = vals[0];
sge_params->sge_congestion_control = vals[1];
return 0;
}