1/* 2 * Copyright (C) 1999 - 2010 Intel Corporation. 3 * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD. 4 * 5 * This code was derived from the Intel e1000e Linux driver. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; version 2 of the License. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, see <http://www.gnu.org/licenses/>. 18 */ 19#include "pch_gbe.h" 20#include "pch_gbe_phy.h" 21#include "pch_gbe_api.h" 22 23/* bus type values */ 24#define pch_gbe_bus_type_unknown 0 25#define pch_gbe_bus_type_pci 1 26#define pch_gbe_bus_type_pcix 2 27#define pch_gbe_bus_type_pci_express 3 28#define pch_gbe_bus_type_reserved 4 29 30/* bus speed values */ 31#define pch_gbe_bus_speed_unknown 0 32#define pch_gbe_bus_speed_33 1 33#define pch_gbe_bus_speed_66 2 34#define pch_gbe_bus_speed_100 3 35#define pch_gbe_bus_speed_120 4 36#define pch_gbe_bus_speed_133 5 37#define pch_gbe_bus_speed_2500 6 38#define pch_gbe_bus_speed_reserved 7 39 40/* bus width values */ 41#define pch_gbe_bus_width_unknown 0 42#define pch_gbe_bus_width_pcie_x1 1 43#define pch_gbe_bus_width_pcie_x2 2 44#define pch_gbe_bus_width_pcie_x4 4 45#define pch_gbe_bus_width_32 5 46#define pch_gbe_bus_width_64 6 47#define pch_gbe_bus_width_reserved 7 48 49/** 50 * pch_gbe_plat_get_bus_info - Obtain bus information for adapter 51 * @hw: Pointer to the HW structure 52 */ 53static void pch_gbe_plat_get_bus_info(struct pch_gbe_hw *hw) 54{ 55 hw->bus.type = pch_gbe_bus_type_pci_express; 56 hw->bus.speed = pch_gbe_bus_speed_2500; 57 hw->bus.width = pch_gbe_bus_width_pcie_x1; 58} 59 60/** 61 * pch_gbe_plat_init_hw - Initialize hardware 62 * @hw: Pointer to the HW structure 63 * Returns: 64 * 0: Successfully 65 * Negative value: Failed-EBUSY 66 */ 67static s32 pch_gbe_plat_init_hw(struct pch_gbe_hw *hw) 68{ 69 s32 ret_val; 70 71 ret_val = pch_gbe_phy_get_id(hw); 72 if (ret_val) { 73 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 74 75 netdev_err(adapter->netdev, "pch_gbe_phy_get_id error\n"); 76 return ret_val; 77 } 78 pch_gbe_phy_init_setting(hw); 79 /* Setup Mac interface option RGMII */ 80#ifdef PCH_GBE_MAC_IFOP_RGMII 81 pch_gbe_phy_set_rgmii(hw); 82#endif 83 return ret_val; 84} 85 86static const struct pch_gbe_functions pch_gbe_ops = { 87 .get_bus_info = pch_gbe_plat_get_bus_info, 88 .init_hw = pch_gbe_plat_init_hw, 89 .read_phy_reg = pch_gbe_phy_read_reg_miic, 90 .write_phy_reg = pch_gbe_phy_write_reg_miic, 91 .reset_phy = pch_gbe_phy_hw_reset, 92 .sw_reset_phy = pch_gbe_phy_sw_reset, 93 .power_up_phy = pch_gbe_phy_power_up, 94 .power_down_phy = pch_gbe_phy_power_down, 95 .read_mac_addr = pch_gbe_mac_read_mac_addr 96}; 97 98/** 99 * pch_gbe_plat_init_function_pointers - Init func ptrs 100 * @hw: Pointer to the HW structure 101 */ 102static void pch_gbe_plat_init_function_pointers(struct pch_gbe_hw *hw) 103{ 104 /* Set PHY parameter */ 105 hw->phy.reset_delay_us = PCH_GBE_PHY_RESET_DELAY_US; 106 /* Set function pointers */ 107 hw->func = &pch_gbe_ops; 108} 109 110/** 111 * pch_gbe_hal_setup_init_funcs - Initializes function pointers 112 * @hw: Pointer to the HW structure 113 * Returns: 114 * 0: Successfully 115 * ENOSYS: Function is not registered 116 */ 117s32 pch_gbe_hal_setup_init_funcs(struct pch_gbe_hw *hw) 118{ 119 if (!hw->reg) { 120 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 121 122 netdev_err(adapter->netdev, "ERROR: Registers not mapped\n"); 123 return -ENOSYS; 124 } 125 pch_gbe_plat_init_function_pointers(hw); 126 return 0; 127} 128 129/** 130 * pch_gbe_hal_get_bus_info - Obtain bus information for adapter 131 * @hw: Pointer to the HW structure 132 */ 133void pch_gbe_hal_get_bus_info(struct pch_gbe_hw *hw) 134{ 135 if (!hw->func->get_bus_info) { 136 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 137 138 netdev_err(adapter->netdev, "ERROR: configuration\n"); 139 return; 140 } 141 hw->func->get_bus_info(hw); 142} 143 144/** 145 * pch_gbe_hal_init_hw - Initialize hardware 146 * @hw: Pointer to the HW structure 147 * Returns: 148 * 0: Successfully 149 * ENOSYS: Function is not registered 150 */ 151s32 pch_gbe_hal_init_hw(struct pch_gbe_hw *hw) 152{ 153 if (!hw->func->init_hw) { 154 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 155 156 netdev_err(adapter->netdev, "ERROR: configuration\n"); 157 return -ENOSYS; 158 } 159 return hw->func->init_hw(hw); 160} 161 162/** 163 * pch_gbe_hal_read_phy_reg - Reads PHY register 164 * @hw: Pointer to the HW structure 165 * @offset: The register to read 166 * @data: The buffer to store the 16-bit read. 167 * Returns: 168 * 0: Successfully 169 * Negative value: Failed 170 */ 171s32 pch_gbe_hal_read_phy_reg(struct pch_gbe_hw *hw, u32 offset, 172 u16 *data) 173{ 174 if (!hw->func->read_phy_reg) 175 return 0; 176 return hw->func->read_phy_reg(hw, offset, data); 177} 178 179/** 180 * pch_gbe_hal_write_phy_reg - Writes PHY register 181 * @hw: Pointer to the HW structure 182 * @offset: The register to read 183 * @data: The value to write. 184 * Returns: 185 * 0: Successfully 186 * Negative value: Failed 187 */ 188s32 pch_gbe_hal_write_phy_reg(struct pch_gbe_hw *hw, u32 offset, 189 u16 data) 190{ 191 if (!hw->func->write_phy_reg) 192 return 0; 193 return hw->func->write_phy_reg(hw, offset, data); 194} 195 196/** 197 * pch_gbe_hal_phy_hw_reset - Hard PHY reset 198 * @hw: Pointer to the HW structure 199 */ 200void pch_gbe_hal_phy_hw_reset(struct pch_gbe_hw *hw) 201{ 202 if (!hw->func->reset_phy) { 203 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 204 205 netdev_err(adapter->netdev, "ERROR: configuration\n"); 206 return; 207 } 208 hw->func->reset_phy(hw); 209} 210 211/** 212 * pch_gbe_hal_phy_sw_reset - Soft PHY reset 213 * @hw: Pointer to the HW structure 214 */ 215void pch_gbe_hal_phy_sw_reset(struct pch_gbe_hw *hw) 216{ 217 if (!hw->func->sw_reset_phy) { 218 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 219 220 netdev_err(adapter->netdev, "ERROR: configuration\n"); 221 return; 222 } 223 hw->func->sw_reset_phy(hw); 224} 225 226/** 227 * pch_gbe_hal_read_mac_addr - Reads MAC address 228 * @hw: Pointer to the HW structure 229 * Returns: 230 * 0: Successfully 231 * ENOSYS: Function is not registered 232 */ 233s32 pch_gbe_hal_read_mac_addr(struct pch_gbe_hw *hw) 234{ 235 if (!hw->func->read_mac_addr) { 236 struct pch_gbe_adapter *adapter = pch_gbe_hw_to_adapter(hw); 237 238 netdev_err(adapter->netdev, "ERROR: configuration\n"); 239 return -ENOSYS; 240 } 241 return hw->func->read_mac_addr(hw); 242} 243 244/** 245 * pch_gbe_hal_power_up_phy - Power up PHY 246 * @hw: Pointer to the HW structure 247 */ 248void pch_gbe_hal_power_up_phy(struct pch_gbe_hw *hw) 249{ 250 if (hw->func->power_up_phy) 251 hw->func->power_up_phy(hw); 252} 253 254/** 255 * pch_gbe_hal_power_down_phy - Power down PHY 256 * @hw: Pointer to the HW structure 257 */ 258void pch_gbe_hal_power_down_phy(struct pch_gbe_hw *hw) 259{ 260 if (hw->func->power_down_phy) 261 hw->func->power_down_phy(hw); 262} 263