diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_common.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c index 3d741ee99a2c..b16fc03ab00c 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_common.c +++ b/drivers/net/ethernet/intel/i40e/i40e_common.c @@ -2035,6 +2035,43 @@ i40e_status i40e_aq_send_msg_to_vf(struct i40e_hw *hw, u16 vfid, } /** + * i40e_aq_debug_read_register + * @hw: pointer to the hw struct + * @reg_addr: register address + * @reg_val: register value + * @cmd_details: pointer to command details structure or NULL + * + * Read the register using the admin queue commands + **/ +i40e_status i40e_aq_debug_read_register(struct i40e_hw *hw, + u32 reg_addr, u64 *reg_val, + struct i40e_asq_cmd_details *cmd_details) +{ + struct i40e_aq_desc desc; + struct i40e_aqc_debug_reg_read_write *cmd_resp = + (struct i40e_aqc_debug_reg_read_write *)&desc.params.raw; + i40e_status status; + + if (reg_val == NULL) + return I40E_ERR_PARAM; + + i40e_fill_default_direct_cmd_desc(&desc, + i40e_aqc_opc_debug_read_reg); + + cmd_resp->address = cpu_to_le32(reg_addr); + + status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details); + + if (!status) { + *reg_val = ((u64)cmd_resp->value_high << 32) | + (u64)cmd_resp->value_low; + *reg_val = le64_to_cpu(*reg_val); + } + + return status; +} + +/** * i40e_aq_debug_write_register * @hw: pointer to the hw struct * @reg_addr: register address @@ -2292,6 +2329,7 @@ static void i40e_parse_discover_capabilities(struct i40e_hw *hw, void *buff, enum i40e_admin_queue_opc list_type_opc) { struct i40e_aqc_list_capabilities_element_resp *cap; + u32 valid_functions, num_functions; u32 number, logical_id, phys_id; struct i40e_hw_capabilities *p; u32 i = 0; @@ -2427,6 +2465,34 @@ static void i40e_parse_discover_capabilities(struct i40e_hw *hw, void *buff, if (p->npar_enable || p->mfp_mode_1) p->fcoe = false; + /* count the enabled ports (aka the "not disabled" ports) */ + hw->num_ports = 0; + for (i = 0; i < 4; i++) { + u32 port_cfg_reg = I40E_PRTGEN_CNF + (4 * i); + u64 port_cfg = 0; + + /* use AQ read to get the physical register offset instead + * of the port relative offset + */ + i40e_aq_debug_read_register(hw, port_cfg_reg, &port_cfg, NULL); + if (!(port_cfg & I40E_PRTGEN_CNF_PORT_DIS_MASK)) + hw->num_ports++; + } + + valid_functions = p->valid_functions; + num_functions = 0; + while (valid_functions) { + if (valid_functions & 1) + num_functions++; + valid_functions >>= 1; + } + + /* partition id is 1-based, and functions are evenly spread + * across the ports as partitions + */ + hw->partition_id = (hw->pf_id / hw->num_ports) + 1; + hw->num_partitions = num_functions / hw->num_ports; + /* additional HW specific goodies that might * someday be HW version specific */ |