diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_common.c | 125 |
1 files changed, 125 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..4f4d9d16bddb 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_common.c +++ b/drivers/net/ethernet/intel/i40e/i40e_common.c @@ -742,6 +742,65 @@ i40e_status i40e_get_san_mac_addr(struct i40e_hw *hw, u8 *mac_addr) #endif /** + * i40e_read_pba_string - Reads part number string from EEPROM + * @hw: pointer to hardware structure + * @pba_num: stores the part number string from the EEPROM + * @pba_num_size: part number string buffer length + * + * Reads the part number string from the EEPROM. + **/ +i40e_status i40e_read_pba_string(struct i40e_hw *hw, u8 *pba_num, + u32 pba_num_size) +{ + i40e_status status = 0; + u16 pba_word = 0; + u16 pba_size = 0; + u16 pba_ptr = 0; + u16 i = 0; + + status = i40e_read_nvm_word(hw, I40E_SR_PBA_FLAGS, &pba_word); + if (status || (pba_word != 0xFAFA)) { + hw_dbg(hw, "Failed to read PBA flags or flag is invalid.\n"); + return status; + } + + status = i40e_read_nvm_word(hw, I40E_SR_PBA_BLOCK_PTR, &pba_ptr); + if (status) { + hw_dbg(hw, "Failed to read PBA Block pointer.\n"); + return status; + } + + status = i40e_read_nvm_word(hw, pba_ptr, &pba_size); + if (status) { + hw_dbg(hw, "Failed to read PBA Block size.\n"); + return status; + } + + /* Subtract one to get PBA word count (PBA Size word is included in + * total size) + */ + pba_size--; + if (pba_num_size < (((u32)pba_size * 2) + 1)) { + hw_dbg(hw, "Buffer to small for PBA data.\n"); + return I40E_ERR_PARAM; + } + + for (i = 0; i < pba_size; i++) { + status = i40e_read_nvm_word(hw, (pba_ptr + 1) + i, &pba_word); + if (status) { + hw_dbg(hw, "Failed to read PBA Block word %d.\n", i); + return status; + } + + pba_num[(i * 2)] = (pba_word >> 8) & 0xFF; + pba_num[(i * 2) + 1] = pba_word & 0xFF; + } + pba_num[(pba_size * 2)] = '\0'; + + return status; +} + +/** * i40e_get_media_type - Gets media type * @hw: pointer to the hardware structure **/ @@ -2035,6 +2094,43 @@ 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 +2388,7 @@ 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 +2524,34 @@ 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 */ |