Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | |
| 3 | Intel(R) Gigabit Ethernet Linux driver |
Alexander Duyck | 86d5d38 | 2009-02-06 23:23:12 +0000 | [diff] [blame] | 4 | Copyright(c) 2007-2009 Intel Corporation. |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5 | |
| 6 | This program is free software; you can redistribute it and/or modify it |
| 7 | under the terms and conditions of the GNU General Public License, |
| 8 | version 2, as published by the Free Software Foundation. |
| 9 | |
| 10 | This program is distributed in the hope it will be useful, but WITHOUT |
| 11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License along with |
| 16 | this program; if not, write to the Free Software Foundation, Inc., |
| 17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | |
| 19 | The full GNU General Public License is included in this distribution in |
| 20 | the file called "COPYING". |
| 21 | |
| 22 | Contact Information: |
| 23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| 24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 25 | |
| 26 | *******************************************************************************/ |
| 27 | |
| 28 | #include <linux/if_ether.h> |
| 29 | #include <linux/delay.h> |
| 30 | |
| 31 | #include "e1000_mac.h" |
| 32 | #include "e1000_phy.h" |
| 33 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 34 | static s32 igb_phy_setup_autoneg(struct e1000_hw *hw); |
| 35 | static void igb_phy_force_speed_duplex_setup(struct e1000_hw *hw, |
| 36 | u16 *phy_ctrl); |
| 37 | static s32 igb_wait_autoneg(struct e1000_hw *hw); |
| 38 | |
| 39 | /* Cable length tables */ |
| 40 | static const u16 e1000_m88_cable_length_table[] = |
| 41 | { 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED }; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 42 | |
| 43 | static const u16 e1000_igp_2_cable_length_table[] = |
| 44 | { 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, |
| 45 | 0, 0, 0, 3, 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, |
| 46 | 6, 10, 14, 18, 22, 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, |
| 47 | 21, 26, 31, 35, 40, 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, |
| 48 | 40, 45, 51, 56, 61, 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, |
| 49 | 60, 66, 72, 77, 82, 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, |
| 50 | 83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124, |
| 51 | 104, 109, 114, 118, 121, 124}; |
| 52 | #define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \ |
| 53 | (sizeof(e1000_igp_2_cable_length_table) / \ |
| 54 | sizeof(e1000_igp_2_cable_length_table[0])) |
| 55 | |
| 56 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 57 | * igb_check_reset_block - Check if PHY reset is blocked |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 58 | * @hw: pointer to the HW structure |
| 59 | * |
| 60 | * Read the PHY management control register and check whether a PHY reset |
| 61 | * is blocked. If a reset is not blocked return 0, otherwise |
| 62 | * return E1000_BLK_PHY_RESET (12). |
| 63 | **/ |
| 64 | s32 igb_check_reset_block(struct e1000_hw *hw) |
| 65 | { |
| 66 | u32 manc; |
| 67 | |
| 68 | manc = rd32(E1000_MANC); |
| 69 | |
| 70 | return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? |
| 71 | E1000_BLK_PHY_RESET : 0; |
| 72 | } |
| 73 | |
| 74 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 75 | * igb_get_phy_id - Retrieve the PHY ID and revision |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 76 | * @hw: pointer to the HW structure |
| 77 | * |
| 78 | * Reads the PHY registers and stores the PHY ID and possibly the PHY |
| 79 | * revision in the hardware structure. |
| 80 | **/ |
| 81 | s32 igb_get_phy_id(struct e1000_hw *hw) |
| 82 | { |
| 83 | struct e1000_phy_info *phy = &hw->phy; |
| 84 | s32 ret_val = 0; |
| 85 | u16 phy_id; |
| 86 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 87 | ret_val = phy->ops.read_reg(hw, PHY_ID1, &phy_id); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 88 | if (ret_val) |
| 89 | goto out; |
| 90 | |
| 91 | phy->id = (u32)(phy_id << 16); |
| 92 | udelay(20); |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 93 | ret_val = phy->ops.read_reg(hw, PHY_ID2, &phy_id); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 94 | if (ret_val) |
| 95 | goto out; |
| 96 | |
| 97 | phy->id |= (u32)(phy_id & PHY_REVISION_MASK); |
| 98 | phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK); |
| 99 | |
| 100 | out: |
| 101 | return ret_val; |
| 102 | } |
| 103 | |
| 104 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 105 | * igb_phy_reset_dsp - Reset PHY DSP |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 106 | * @hw: pointer to the HW structure |
| 107 | * |
| 108 | * Reset the digital signal processor. |
| 109 | **/ |
| 110 | static s32 igb_phy_reset_dsp(struct e1000_hw *hw) |
| 111 | { |
| 112 | s32 ret_val; |
| 113 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 114 | ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xC1); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 115 | if (ret_val) |
| 116 | goto out; |
| 117 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 118 | ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 119 | |
| 120 | out: |
| 121 | return ret_val; |
| 122 | } |
| 123 | |
| 124 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 125 | * igb_read_phy_reg_mdic - Read MDI control register |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 126 | * @hw: pointer to the HW structure |
| 127 | * @offset: register offset to be read |
| 128 | * @data: pointer to the read data |
| 129 | * |
| 130 | * Reads the MDI control regsiter in the PHY at offset and stores the |
| 131 | * information read to data. |
| 132 | **/ |
| 133 | static s32 igb_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data) |
| 134 | { |
| 135 | struct e1000_phy_info *phy = &hw->phy; |
| 136 | u32 i, mdic = 0; |
| 137 | s32 ret_val = 0; |
| 138 | |
| 139 | if (offset > MAX_PHY_REG_ADDRESS) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 140 | hw_dbg("PHY Address %d is out of range\n", offset); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 141 | ret_val = -E1000_ERR_PARAM; |
| 142 | goto out; |
| 143 | } |
| 144 | |
| 145 | /* |
| 146 | * Set up Op-code, Phy Address, and register offset in the MDI |
| 147 | * Control register. The MAC will take care of interfacing with the |
| 148 | * PHY to retrieve the desired data. |
| 149 | */ |
| 150 | mdic = ((offset << E1000_MDIC_REG_SHIFT) | |
| 151 | (phy->addr << E1000_MDIC_PHY_SHIFT) | |
| 152 | (E1000_MDIC_OP_READ)); |
| 153 | |
| 154 | wr32(E1000_MDIC, mdic); |
| 155 | |
| 156 | /* |
| 157 | * Poll the ready bit to see if the MDI read completed |
| 158 | * Increasing the time out as testing showed failures with |
| 159 | * the lower time out |
| 160 | */ |
| 161 | for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) { |
| 162 | udelay(50); |
| 163 | mdic = rd32(E1000_MDIC); |
| 164 | if (mdic & E1000_MDIC_READY) |
| 165 | break; |
| 166 | } |
| 167 | if (!(mdic & E1000_MDIC_READY)) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 168 | hw_dbg("MDI Read did not complete\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 169 | ret_val = -E1000_ERR_PHY; |
| 170 | goto out; |
| 171 | } |
| 172 | if (mdic & E1000_MDIC_ERROR) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 173 | hw_dbg("MDI Error\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 174 | ret_val = -E1000_ERR_PHY; |
| 175 | goto out; |
| 176 | } |
| 177 | *data = (u16) mdic; |
| 178 | |
| 179 | out: |
| 180 | return ret_val; |
| 181 | } |
| 182 | |
| 183 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 184 | * igb_write_phy_reg_mdic - Write MDI control register |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 185 | * @hw: pointer to the HW structure |
| 186 | * @offset: register offset to write to |
| 187 | * @data: data to write to register at offset |
| 188 | * |
| 189 | * Writes data to MDI control register in the PHY at offset. |
| 190 | **/ |
| 191 | static s32 igb_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data) |
| 192 | { |
| 193 | struct e1000_phy_info *phy = &hw->phy; |
| 194 | u32 i, mdic = 0; |
| 195 | s32 ret_val = 0; |
| 196 | |
| 197 | if (offset > MAX_PHY_REG_ADDRESS) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 198 | hw_dbg("PHY Address %d is out of range\n", offset); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 199 | ret_val = -E1000_ERR_PARAM; |
| 200 | goto out; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Set up Op-code, Phy Address, and register offset in the MDI |
| 205 | * Control register. The MAC will take care of interfacing with the |
| 206 | * PHY to retrieve the desired data. |
| 207 | */ |
| 208 | mdic = (((u32)data) | |
| 209 | (offset << E1000_MDIC_REG_SHIFT) | |
| 210 | (phy->addr << E1000_MDIC_PHY_SHIFT) | |
| 211 | (E1000_MDIC_OP_WRITE)); |
| 212 | |
| 213 | wr32(E1000_MDIC, mdic); |
| 214 | |
| 215 | /* |
| 216 | * Poll the ready bit to see if the MDI read completed |
| 217 | * Increasing the time out as testing showed failures with |
| 218 | * the lower time out |
| 219 | */ |
| 220 | for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) { |
| 221 | udelay(50); |
| 222 | mdic = rd32(E1000_MDIC); |
| 223 | if (mdic & E1000_MDIC_READY) |
| 224 | break; |
| 225 | } |
| 226 | if (!(mdic & E1000_MDIC_READY)) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 227 | hw_dbg("MDI Write did not complete\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 228 | ret_val = -E1000_ERR_PHY; |
| 229 | goto out; |
| 230 | } |
| 231 | if (mdic & E1000_MDIC_ERROR) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 232 | hw_dbg("MDI Error\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 233 | ret_val = -E1000_ERR_PHY; |
| 234 | goto out; |
| 235 | } |
| 236 | |
| 237 | out: |
| 238 | return ret_val; |
| 239 | } |
| 240 | |
| 241 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 242 | * igb_read_phy_reg_igp - Read igp PHY register |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 243 | * @hw: pointer to the HW structure |
| 244 | * @offset: register offset to be read |
| 245 | * @data: pointer to the read data |
| 246 | * |
| 247 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
| 248 | * and storing the retrieved information in data. Release any acquired |
| 249 | * semaphores before exiting. |
| 250 | **/ |
| 251 | s32 igb_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data) |
| 252 | { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 253 | s32 ret_val = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 254 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 255 | if (!(hw->phy.ops.acquire)) |
| 256 | goto out; |
| 257 | |
| 258 | ret_val = hw->phy.ops.acquire(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 259 | if (ret_val) |
| 260 | goto out; |
| 261 | |
| 262 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
| 263 | ret_val = igb_write_phy_reg_mdic(hw, |
| 264 | IGP01E1000_PHY_PAGE_SELECT, |
| 265 | (u16)offset); |
| 266 | if (ret_val) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 267 | hw->phy.ops.release(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 268 | goto out; |
| 269 | } |
| 270 | } |
| 271 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 272 | ret_val = igb_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 273 | data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 274 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 275 | hw->phy.ops.release(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 276 | |
| 277 | out: |
| 278 | return ret_val; |
| 279 | } |
| 280 | |
| 281 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 282 | * igb_write_phy_reg_igp - Write igp PHY register |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 283 | * @hw: pointer to the HW structure |
| 284 | * @offset: register offset to write to |
| 285 | * @data: data to write at register offset |
| 286 | * |
| 287 | * Acquires semaphore, if necessary, then writes the data to PHY register |
| 288 | * at the offset. Release any acquired semaphores before exiting. |
| 289 | **/ |
| 290 | s32 igb_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data) |
| 291 | { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 292 | s32 ret_val = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 293 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 294 | if (!(hw->phy.ops.acquire)) |
| 295 | goto out; |
| 296 | |
| 297 | ret_val = hw->phy.ops.acquire(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 298 | if (ret_val) |
| 299 | goto out; |
| 300 | |
| 301 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
| 302 | ret_val = igb_write_phy_reg_mdic(hw, |
| 303 | IGP01E1000_PHY_PAGE_SELECT, |
| 304 | (u16)offset); |
| 305 | if (ret_val) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 306 | hw->phy.ops.release(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 307 | goto out; |
| 308 | } |
| 309 | } |
| 310 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 311 | ret_val = igb_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 312 | data); |
| 313 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 314 | hw->phy.ops.release(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 315 | |
| 316 | out: |
| 317 | return ret_val; |
| 318 | } |
| 319 | |
| 320 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 321 | * igb_copper_link_setup_m88 - Setup m88 PHY's for copper link |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 322 | * @hw: pointer to the HW structure |
| 323 | * |
| 324 | * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock |
| 325 | * and downshift values are set also. |
| 326 | **/ |
| 327 | s32 igb_copper_link_setup_m88(struct e1000_hw *hw) |
| 328 | { |
| 329 | struct e1000_phy_info *phy = &hw->phy; |
| 330 | s32 ret_val; |
| 331 | u16 phy_data; |
| 332 | |
| 333 | if (phy->reset_disable) { |
| 334 | ret_val = 0; |
| 335 | goto out; |
| 336 | } |
| 337 | |
| 338 | /* Enable CRS on TX. This must be set for half-duplex operation. */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 339 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 340 | if (ret_val) |
| 341 | goto out; |
| 342 | |
| 343 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; |
| 344 | |
| 345 | /* |
| 346 | * Options: |
| 347 | * MDI/MDI-X = 0 (default) |
| 348 | * 0 - Auto for all speeds |
| 349 | * 1 - MDI mode |
| 350 | * 2 - MDI-X mode |
| 351 | * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) |
| 352 | */ |
| 353 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; |
| 354 | |
| 355 | switch (phy->mdix) { |
| 356 | case 1: |
| 357 | phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; |
| 358 | break; |
| 359 | case 2: |
| 360 | phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; |
| 361 | break; |
| 362 | case 3: |
| 363 | phy_data |= M88E1000_PSCR_AUTO_X_1000T; |
| 364 | break; |
| 365 | case 0: |
| 366 | default: |
| 367 | phy_data |= M88E1000_PSCR_AUTO_X_MODE; |
| 368 | break; |
| 369 | } |
| 370 | |
| 371 | /* |
| 372 | * Options: |
| 373 | * disable_polarity_correction = 0 (default) |
| 374 | * Automatic Correction for Reversed Cable Polarity |
| 375 | * 0 - Disabled |
| 376 | * 1 - Enabled |
| 377 | */ |
| 378 | phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; |
| 379 | if (phy->disable_polarity_correction == 1) |
| 380 | phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; |
| 381 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 382 | ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 383 | if (ret_val) |
| 384 | goto out; |
| 385 | |
| 386 | if (phy->revision < E1000_REVISION_4) { |
| 387 | /* |
| 388 | * Force TX_CLK in the Extended PHY Specific Control Register |
| 389 | * to 25MHz clock. |
| 390 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 391 | ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 392 | &phy_data); |
| 393 | if (ret_val) |
| 394 | goto out; |
| 395 | |
| 396 | phy_data |= M88E1000_EPSCR_TX_CLK_25; |
| 397 | |
| 398 | if ((phy->revision == E1000_REVISION_2) && |
| 399 | (phy->id == M88E1111_I_PHY_ID)) { |
| 400 | /* 82573L PHY - set the downshift counter to 5x. */ |
| 401 | phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK; |
| 402 | phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X; |
| 403 | } else { |
| 404 | /* Configure Master and Slave downshift values */ |
| 405 | phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | |
| 406 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); |
| 407 | phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | |
| 408 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); |
| 409 | } |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 410 | ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 411 | phy_data); |
| 412 | if (ret_val) |
| 413 | goto out; |
| 414 | } |
| 415 | |
| 416 | /* Commit the changes. */ |
| 417 | ret_val = igb_phy_sw_reset(hw); |
| 418 | if (ret_val) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 419 | hw_dbg("Error committing the PHY changes\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 420 | goto out; |
| 421 | } |
| 422 | |
| 423 | out: |
| 424 | return ret_val; |
| 425 | } |
| 426 | |
| 427 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 428 | * igb_copper_link_setup_igp - Setup igp PHY's for copper link |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 429 | * @hw: pointer to the HW structure |
| 430 | * |
| 431 | * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for |
| 432 | * igp PHY's. |
| 433 | **/ |
| 434 | s32 igb_copper_link_setup_igp(struct e1000_hw *hw) |
| 435 | { |
| 436 | struct e1000_phy_info *phy = &hw->phy; |
| 437 | s32 ret_val; |
| 438 | u16 data; |
| 439 | |
| 440 | if (phy->reset_disable) { |
| 441 | ret_val = 0; |
| 442 | goto out; |
| 443 | } |
| 444 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 445 | ret_val = phy->ops.reset(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 446 | if (ret_val) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 447 | hw_dbg("Error resetting the PHY.\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 448 | goto out; |
| 449 | } |
| 450 | |
Alexander Duyck | a6a6056 | 2009-03-31 20:38:38 +0000 | [diff] [blame] | 451 | /* |
| 452 | * Wait 100ms for MAC to configure PHY from NVM settings, to avoid |
| 453 | * timeout issues when LFS is enabled. |
| 454 | */ |
| 455 | msleep(100); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 456 | |
| 457 | /* |
| 458 | * The NVM settings will configure LPLU in D3 for |
| 459 | * non-IGP1 PHYs. |
| 460 | */ |
| 461 | if (phy->type == e1000_phy_igp) { |
| 462 | /* disable lplu d3 during driver init */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 463 | if (phy->ops.set_d3_lplu_state) |
| 464 | ret_val = phy->ops.set_d3_lplu_state(hw, false); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 465 | if (ret_val) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 466 | hw_dbg("Error Disabling LPLU D3\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 467 | goto out; |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | /* disable lplu d0 during driver init */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 472 | ret_val = phy->ops.set_d0_lplu_state(hw, false); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 473 | if (ret_val) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 474 | hw_dbg("Error Disabling LPLU D0\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 475 | goto out; |
| 476 | } |
| 477 | /* Configure mdi-mdix settings */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 478 | ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 479 | if (ret_val) |
| 480 | goto out; |
| 481 | |
| 482 | data &= ~IGP01E1000_PSCR_AUTO_MDIX; |
| 483 | |
| 484 | switch (phy->mdix) { |
| 485 | case 1: |
| 486 | data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; |
| 487 | break; |
| 488 | case 2: |
| 489 | data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; |
| 490 | break; |
| 491 | case 0: |
| 492 | default: |
| 493 | data |= IGP01E1000_PSCR_AUTO_MDIX; |
| 494 | break; |
| 495 | } |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 496 | ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 497 | if (ret_val) |
| 498 | goto out; |
| 499 | |
| 500 | /* set auto-master slave resolution settings */ |
| 501 | if (hw->mac.autoneg) { |
| 502 | /* |
| 503 | * when autonegotiation advertisement is only 1000Mbps then we |
| 504 | * should disable SmartSpeed and enable Auto MasterSlave |
| 505 | * resolution as hardware default. |
| 506 | */ |
| 507 | if (phy->autoneg_advertised == ADVERTISE_1000_FULL) { |
| 508 | /* Disable SmartSpeed */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 509 | ret_val = phy->ops.read_reg(hw, |
| 510 | IGP01E1000_PHY_PORT_CONFIG, |
| 511 | &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 512 | if (ret_val) |
| 513 | goto out; |
| 514 | |
| 515 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 516 | ret_val = phy->ops.write_reg(hw, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 517 | IGP01E1000_PHY_PORT_CONFIG, |
| 518 | data); |
| 519 | if (ret_val) |
| 520 | goto out; |
| 521 | |
| 522 | /* Set auto Master/Slave resolution process */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 523 | ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 524 | if (ret_val) |
| 525 | goto out; |
| 526 | |
| 527 | data &= ~CR_1000T_MS_ENABLE; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 528 | ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 529 | if (ret_val) |
| 530 | goto out; |
| 531 | } |
| 532 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 533 | ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 534 | if (ret_val) |
| 535 | goto out; |
| 536 | |
| 537 | /* load defaults for future use */ |
| 538 | phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ? |
| 539 | ((data & CR_1000T_MS_VALUE) ? |
| 540 | e1000_ms_force_master : |
| 541 | e1000_ms_force_slave) : |
| 542 | e1000_ms_auto; |
| 543 | |
| 544 | switch (phy->ms_type) { |
| 545 | case e1000_ms_force_master: |
| 546 | data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); |
| 547 | break; |
| 548 | case e1000_ms_force_slave: |
| 549 | data |= CR_1000T_MS_ENABLE; |
| 550 | data &= ~(CR_1000T_MS_VALUE); |
| 551 | break; |
| 552 | case e1000_ms_auto: |
| 553 | data &= ~CR_1000T_MS_ENABLE; |
| 554 | default: |
| 555 | break; |
| 556 | } |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 557 | ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 558 | if (ret_val) |
| 559 | goto out; |
| 560 | } |
| 561 | |
| 562 | out: |
| 563 | return ret_val; |
| 564 | } |
| 565 | |
| 566 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 567 | * igb_copper_link_autoneg - Setup/Enable autoneg for copper link |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 568 | * @hw: pointer to the HW structure |
| 569 | * |
| 570 | * Performs initial bounds checking on autoneg advertisement parameter, then |
| 571 | * configure to advertise the full capability. Setup the PHY to autoneg |
| 572 | * and restart the negotiation process between the link partner. If |
| 573 | * autoneg_wait_to_complete, then wait for autoneg to complete before exiting. |
| 574 | **/ |
| 575 | s32 igb_copper_link_autoneg(struct e1000_hw *hw) |
| 576 | { |
| 577 | struct e1000_phy_info *phy = &hw->phy; |
| 578 | s32 ret_val; |
| 579 | u16 phy_ctrl; |
| 580 | |
| 581 | /* |
| 582 | * Perform some bounds checking on the autoneg advertisement |
| 583 | * parameter. |
| 584 | */ |
| 585 | phy->autoneg_advertised &= phy->autoneg_mask; |
| 586 | |
| 587 | /* |
| 588 | * If autoneg_advertised is zero, we assume it was not defaulted |
| 589 | * by the calling code so we set to advertise full capability. |
| 590 | */ |
| 591 | if (phy->autoneg_advertised == 0) |
| 592 | phy->autoneg_advertised = phy->autoneg_mask; |
| 593 | |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 594 | hw_dbg("Reconfiguring auto-neg advertisement params\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 595 | ret_val = igb_phy_setup_autoneg(hw); |
| 596 | if (ret_val) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 597 | hw_dbg("Error Setting up Auto-Negotiation\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 598 | goto out; |
| 599 | } |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 600 | hw_dbg("Restarting Auto-Neg\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 601 | |
| 602 | /* |
| 603 | * Restart auto-negotiation by setting the Auto Neg Enable bit and |
| 604 | * the Auto Neg Restart bit in the PHY control register. |
| 605 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 606 | ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_ctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 607 | if (ret_val) |
| 608 | goto out; |
| 609 | |
| 610 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 611 | ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_ctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 612 | if (ret_val) |
| 613 | goto out; |
| 614 | |
| 615 | /* |
| 616 | * Does the user want to wait for Auto-Neg to complete here, or |
| 617 | * check at a later time (for example, callback routine). |
| 618 | */ |
| 619 | if (phy->autoneg_wait_to_complete) { |
| 620 | ret_val = igb_wait_autoneg(hw); |
| 621 | if (ret_val) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 622 | hw_dbg("Error while waiting for " |
| 623 | "autoneg to complete\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 624 | goto out; |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | hw->mac.get_link_status = true; |
| 629 | |
| 630 | out: |
| 631 | return ret_val; |
| 632 | } |
| 633 | |
| 634 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 635 | * igb_phy_setup_autoneg - Configure PHY for auto-negotiation |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 636 | * @hw: pointer to the HW structure |
| 637 | * |
| 638 | * Reads the MII auto-neg advertisement register and/or the 1000T control |
| 639 | * register and if the PHY is already setup for auto-negotiation, then |
| 640 | * return successful. Otherwise, setup advertisement and flow control to |
| 641 | * the appropriate values for the wanted auto-negotiation. |
| 642 | **/ |
| 643 | static s32 igb_phy_setup_autoneg(struct e1000_hw *hw) |
| 644 | { |
| 645 | struct e1000_phy_info *phy = &hw->phy; |
| 646 | s32 ret_val; |
| 647 | u16 mii_autoneg_adv_reg; |
| 648 | u16 mii_1000t_ctrl_reg = 0; |
| 649 | |
| 650 | phy->autoneg_advertised &= phy->autoneg_mask; |
| 651 | |
| 652 | /* Read the MII Auto-Neg Advertisement Register (Address 4). */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 653 | ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 654 | if (ret_val) |
| 655 | goto out; |
| 656 | |
| 657 | if (phy->autoneg_mask & ADVERTISE_1000_FULL) { |
| 658 | /* Read the MII 1000Base-T Control Register (Address 9). */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 659 | ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 660 | &mii_1000t_ctrl_reg); |
| 661 | if (ret_val) |
| 662 | goto out; |
| 663 | } |
| 664 | |
| 665 | /* |
| 666 | * Need to parse both autoneg_advertised and fc and set up |
| 667 | * the appropriate PHY registers. First we will parse for |
| 668 | * autoneg_advertised software override. Since we can advertise |
| 669 | * a plethora of combinations, we need to check each bit |
| 670 | * individually. |
| 671 | */ |
| 672 | |
| 673 | /* |
| 674 | * First we clear all the 10/100 mb speed bits in the Auto-Neg |
| 675 | * Advertisement Register (Address 4) and the 1000 mb speed bits in |
| 676 | * the 1000Base-T Control Register (Address 9). |
| 677 | */ |
| 678 | mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS | |
| 679 | NWAY_AR_100TX_HD_CAPS | |
| 680 | NWAY_AR_10T_FD_CAPS | |
| 681 | NWAY_AR_10T_HD_CAPS); |
| 682 | mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS); |
| 683 | |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 684 | hw_dbg("autoneg_advertised %x\n", phy->autoneg_advertised); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 685 | |
| 686 | /* Do we want to advertise 10 Mb Half Duplex? */ |
| 687 | if (phy->autoneg_advertised & ADVERTISE_10_HALF) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 688 | hw_dbg("Advertise 10mb Half duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 689 | mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; |
| 690 | } |
| 691 | |
| 692 | /* Do we want to advertise 10 Mb Full Duplex? */ |
| 693 | if (phy->autoneg_advertised & ADVERTISE_10_FULL) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 694 | hw_dbg("Advertise 10mb Full duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 695 | mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; |
| 696 | } |
| 697 | |
| 698 | /* Do we want to advertise 100 Mb Half Duplex? */ |
| 699 | if (phy->autoneg_advertised & ADVERTISE_100_HALF) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 700 | hw_dbg("Advertise 100mb Half duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 701 | mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; |
| 702 | } |
| 703 | |
| 704 | /* Do we want to advertise 100 Mb Full Duplex? */ |
| 705 | if (phy->autoneg_advertised & ADVERTISE_100_FULL) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 706 | hw_dbg("Advertise 100mb Full duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 707 | mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; |
| 708 | } |
| 709 | |
| 710 | /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ |
| 711 | if (phy->autoneg_advertised & ADVERTISE_1000_HALF) |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 712 | hw_dbg("Advertise 1000mb Half duplex request denied!\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 713 | |
| 714 | /* Do we want to advertise 1000 Mb Full Duplex? */ |
| 715 | if (phy->autoneg_advertised & ADVERTISE_1000_FULL) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 716 | hw_dbg("Advertise 1000mb Full duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 717 | mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; |
| 718 | } |
| 719 | |
| 720 | /* |
| 721 | * Check for a software override of the flow control settings, and |
| 722 | * setup the PHY advertisement registers accordingly. If |
| 723 | * auto-negotiation is enabled, then software will have to set the |
| 724 | * "PAUSE" bits to the correct value in the Auto-Negotiation |
| 725 | * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto- |
| 726 | * negotiation. |
| 727 | * |
| 728 | * The possible values of the "fc" parameter are: |
| 729 | * 0: Flow control is completely disabled |
| 730 | * 1: Rx flow control is enabled (we can receive pause frames |
| 731 | * but not send pause frames). |
| 732 | * 2: Tx flow control is enabled (we can send pause frames |
| 733 | * but we do not support receiving pause frames). |
| 734 | * 3: Both Rx and TX flow control (symmetric) are enabled. |
| 735 | * other: No software override. The flow control configuration |
| 736 | * in the EEPROM is used. |
| 737 | */ |
| 738 | switch (hw->fc.type) { |
| 739 | case e1000_fc_none: |
| 740 | /* |
| 741 | * Flow control (RX & TX) is completely disabled by a |
| 742 | * software over-ride. |
| 743 | */ |
| 744 | mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); |
| 745 | break; |
| 746 | case e1000_fc_rx_pause: |
| 747 | /* |
| 748 | * RX Flow control is enabled, and TX Flow control is |
| 749 | * disabled, by a software over-ride. |
| 750 | * |
| 751 | * Since there really isn't a way to advertise that we are |
| 752 | * capable of RX Pause ONLY, we will advertise that we |
| 753 | * support both symmetric and asymmetric RX PAUSE. Later |
| 754 | * (in e1000_config_fc_after_link_up) we will disable the |
| 755 | * hw's ability to send PAUSE frames. |
| 756 | */ |
| 757 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); |
| 758 | break; |
| 759 | case e1000_fc_tx_pause: |
| 760 | /* |
| 761 | * TX Flow control is enabled, and RX Flow control is |
| 762 | * disabled, by a software over-ride. |
| 763 | */ |
| 764 | mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; |
| 765 | mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; |
| 766 | break; |
| 767 | case e1000_fc_full: |
| 768 | /* |
| 769 | * Flow control (both RX and TX) is enabled by a software |
| 770 | * over-ride. |
| 771 | */ |
| 772 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); |
| 773 | break; |
| 774 | default: |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 775 | hw_dbg("Flow control param set incorrectly\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 776 | ret_val = -E1000_ERR_CONFIG; |
| 777 | goto out; |
| 778 | } |
| 779 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 780 | ret_val = phy->ops.write_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 781 | if (ret_val) |
| 782 | goto out; |
| 783 | |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 784 | hw_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 785 | |
| 786 | if (phy->autoneg_mask & ADVERTISE_1000_FULL) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 787 | ret_val = phy->ops.write_reg(hw, |
| 788 | PHY_1000T_CTRL, |
| 789 | mii_1000t_ctrl_reg); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 790 | if (ret_val) |
| 791 | goto out; |
| 792 | } |
| 793 | |
| 794 | out: |
| 795 | return ret_val; |
| 796 | } |
| 797 | |
| 798 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 799 | * igb_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 800 | * @hw: pointer to the HW structure |
| 801 | * |
| 802 | * Calls the PHY setup function to force speed and duplex. Clears the |
| 803 | * auto-crossover to force MDI manually. Waits for link and returns |
| 804 | * successful if link up is successful, else -E1000_ERR_PHY (-2). |
| 805 | **/ |
| 806 | s32 igb_phy_force_speed_duplex_igp(struct e1000_hw *hw) |
| 807 | { |
| 808 | struct e1000_phy_info *phy = &hw->phy; |
| 809 | s32 ret_val; |
| 810 | u16 phy_data; |
| 811 | bool link; |
| 812 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 813 | ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 814 | if (ret_val) |
| 815 | goto out; |
| 816 | |
| 817 | igb_phy_force_speed_duplex_setup(hw, &phy_data); |
| 818 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 819 | ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 820 | if (ret_val) |
| 821 | goto out; |
| 822 | |
| 823 | /* |
| 824 | * Clear Auto-Crossover to force MDI manually. IGP requires MDI |
| 825 | * forced whenever speed and duplex are forced. |
| 826 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 827 | ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 828 | if (ret_val) |
| 829 | goto out; |
| 830 | |
| 831 | phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; |
| 832 | phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; |
| 833 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 834 | ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 835 | if (ret_val) |
| 836 | goto out; |
| 837 | |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 838 | hw_dbg("IGP PSCR: %X\n", phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 839 | |
| 840 | udelay(1); |
| 841 | |
| 842 | if (phy->autoneg_wait_to_complete) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 843 | hw_dbg("Waiting for forced speed/duplex link on IGP phy.\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 844 | |
| 845 | ret_val = igb_phy_has_link(hw, |
| 846 | PHY_FORCE_LIMIT, |
| 847 | 100000, |
| 848 | &link); |
| 849 | if (ret_val) |
| 850 | goto out; |
| 851 | |
| 852 | if (!link) |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 853 | hw_dbg("Link taking longer than expected.\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 854 | |
| 855 | /* Try once more */ |
| 856 | ret_val = igb_phy_has_link(hw, |
| 857 | PHY_FORCE_LIMIT, |
| 858 | 100000, |
| 859 | &link); |
| 860 | if (ret_val) |
| 861 | goto out; |
| 862 | } |
| 863 | |
| 864 | out: |
| 865 | return ret_val; |
| 866 | } |
| 867 | |
| 868 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 869 | * igb_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 870 | * @hw: pointer to the HW structure |
| 871 | * |
| 872 | * Calls the PHY setup function to force speed and duplex. Clears the |
| 873 | * auto-crossover to force MDI manually. Resets the PHY to commit the |
| 874 | * changes. If time expires while waiting for link up, we reset the DSP. |
| 875 | * After reset, TX_CLK and CRS on TX must be set. Return successful upon |
| 876 | * successful completion, else return corresponding error code. |
| 877 | **/ |
| 878 | s32 igb_phy_force_speed_duplex_m88(struct e1000_hw *hw) |
| 879 | { |
| 880 | struct e1000_phy_info *phy = &hw->phy; |
| 881 | s32 ret_val; |
| 882 | u16 phy_data; |
| 883 | bool link; |
| 884 | |
| 885 | /* |
| 886 | * Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI |
| 887 | * forced whenever speed and duplex are forced. |
| 888 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 889 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 890 | if (ret_val) |
| 891 | goto out; |
| 892 | |
| 893 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 894 | ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 895 | if (ret_val) |
| 896 | goto out; |
| 897 | |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 898 | hw_dbg("M88E1000 PSCR: %X\n", phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 899 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 900 | ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 901 | if (ret_val) |
| 902 | goto out; |
| 903 | |
| 904 | igb_phy_force_speed_duplex_setup(hw, &phy_data); |
| 905 | |
| 906 | /* Reset the phy to commit changes. */ |
| 907 | phy_data |= MII_CR_RESET; |
| 908 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 909 | ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 910 | if (ret_val) |
| 911 | goto out; |
| 912 | |
| 913 | udelay(1); |
| 914 | |
| 915 | if (phy->autoneg_wait_to_complete) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 916 | hw_dbg("Waiting for forced speed/duplex link on M88 phy.\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 917 | |
| 918 | ret_val = igb_phy_has_link(hw, |
| 919 | PHY_FORCE_LIMIT, |
| 920 | 100000, |
| 921 | &link); |
| 922 | if (ret_val) |
| 923 | goto out; |
| 924 | |
| 925 | if (!link) { |
| 926 | /* |
| 927 | * We didn't get link. |
| 928 | * Reset the DSP and cross our fingers. |
| 929 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 930 | ret_val = phy->ops.write_reg(hw, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 931 | M88E1000_PHY_PAGE_SELECT, |
| 932 | 0x001d); |
| 933 | if (ret_val) |
| 934 | goto out; |
| 935 | ret_val = igb_phy_reset_dsp(hw); |
| 936 | if (ret_val) |
| 937 | goto out; |
| 938 | } |
| 939 | |
| 940 | /* Try once more */ |
| 941 | ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, |
| 942 | 100000, &link); |
| 943 | if (ret_val) |
| 944 | goto out; |
| 945 | } |
| 946 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 947 | ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 948 | if (ret_val) |
| 949 | goto out; |
| 950 | |
| 951 | /* |
| 952 | * Resetting the phy means we need to re-force TX_CLK in the |
| 953 | * Extended PHY Specific Control Register to 25MHz clock from |
| 954 | * the reset value of 2.5MHz. |
| 955 | */ |
| 956 | phy_data |= M88E1000_EPSCR_TX_CLK_25; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 957 | ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 958 | if (ret_val) |
| 959 | goto out; |
| 960 | |
| 961 | /* |
| 962 | * In addition, we must re-enable CRS on Tx for both half and full |
| 963 | * duplex. |
| 964 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 965 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 966 | if (ret_val) |
| 967 | goto out; |
| 968 | |
| 969 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 970 | ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 971 | |
| 972 | out: |
| 973 | return ret_val; |
| 974 | } |
| 975 | |
| 976 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 977 | * igb_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 978 | * @hw: pointer to the HW structure |
| 979 | * @phy_ctrl: pointer to current value of PHY_CONTROL |
| 980 | * |
| 981 | * Forces speed and duplex on the PHY by doing the following: disable flow |
| 982 | * control, force speed/duplex on the MAC, disable auto speed detection, |
| 983 | * disable auto-negotiation, configure duplex, configure speed, configure |
| 984 | * the collision distance, write configuration to CTRL register. The |
| 985 | * caller must write to the PHY_CONTROL register for these settings to |
| 986 | * take affect. |
| 987 | **/ |
| 988 | static void igb_phy_force_speed_duplex_setup(struct e1000_hw *hw, |
| 989 | u16 *phy_ctrl) |
| 990 | { |
| 991 | struct e1000_mac_info *mac = &hw->mac; |
| 992 | u32 ctrl; |
| 993 | |
| 994 | /* Turn off flow control when forcing speed/duplex */ |
| 995 | hw->fc.type = e1000_fc_none; |
| 996 | |
| 997 | /* Force speed/duplex on the mac */ |
| 998 | ctrl = rd32(E1000_CTRL); |
| 999 | ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); |
| 1000 | ctrl &= ~E1000_CTRL_SPD_SEL; |
| 1001 | |
| 1002 | /* Disable Auto Speed Detection */ |
| 1003 | ctrl &= ~E1000_CTRL_ASDE; |
| 1004 | |
| 1005 | /* Disable autoneg on the phy */ |
| 1006 | *phy_ctrl &= ~MII_CR_AUTO_NEG_EN; |
| 1007 | |
| 1008 | /* Forcing Full or Half Duplex? */ |
| 1009 | if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) { |
| 1010 | ctrl &= ~E1000_CTRL_FD; |
| 1011 | *phy_ctrl &= ~MII_CR_FULL_DUPLEX; |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1012 | hw_dbg("Half Duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1013 | } else { |
| 1014 | ctrl |= E1000_CTRL_FD; |
| 1015 | *phy_ctrl |= MII_CR_FULL_DUPLEX; |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1016 | hw_dbg("Full Duplex\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1017 | } |
| 1018 | |
| 1019 | /* Forcing 10mb or 100mb? */ |
| 1020 | if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) { |
| 1021 | ctrl |= E1000_CTRL_SPD_100; |
| 1022 | *phy_ctrl |= MII_CR_SPEED_100; |
| 1023 | *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10); |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1024 | hw_dbg("Forcing 100mb\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1025 | } else { |
| 1026 | ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100); |
| 1027 | *phy_ctrl |= MII_CR_SPEED_10; |
| 1028 | *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100); |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1029 | hw_dbg("Forcing 10mb\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1030 | } |
| 1031 | |
| 1032 | igb_config_collision_dist(hw); |
| 1033 | |
| 1034 | wr32(E1000_CTRL, ctrl); |
| 1035 | } |
| 1036 | |
| 1037 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1038 | * igb_set_d3_lplu_state - Sets low power link up state for D3 |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1039 | * @hw: pointer to the HW structure |
| 1040 | * @active: boolean used to enable/disable lplu |
| 1041 | * |
| 1042 | * Success returns 0, Failure returns 1 |
| 1043 | * |
| 1044 | * The low power link up (lplu) state is set to the power management level D3 |
| 1045 | * and SmartSpeed is disabled when active is true, else clear lplu for D3 |
| 1046 | * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU |
| 1047 | * is used during Dx states where the power conservation is most important. |
| 1048 | * During driver activity, SmartSpeed should be enabled so performance is |
| 1049 | * maintained. |
| 1050 | **/ |
| 1051 | s32 igb_set_d3_lplu_state(struct e1000_hw *hw, bool active) |
| 1052 | { |
| 1053 | struct e1000_phy_info *phy = &hw->phy; |
| 1054 | s32 ret_val; |
| 1055 | u16 data; |
| 1056 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1057 | ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1058 | if (ret_val) |
| 1059 | goto out; |
| 1060 | |
| 1061 | if (!active) { |
| 1062 | data &= ~IGP02E1000_PM_D3_LPLU; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1063 | ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1064 | data); |
| 1065 | if (ret_val) |
| 1066 | goto out; |
| 1067 | /* |
| 1068 | * LPLU and SmartSpeed are mutually exclusive. LPLU is used |
| 1069 | * during Dx states where the power conservation is most |
| 1070 | * important. During driver activity we should enable |
| 1071 | * SmartSpeed, so performance is maintained. |
| 1072 | */ |
| 1073 | if (phy->smart_speed == e1000_smart_speed_on) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1074 | ret_val = phy->ops.read_reg(hw, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1075 | IGP01E1000_PHY_PORT_CONFIG, |
| 1076 | &data); |
| 1077 | if (ret_val) |
| 1078 | goto out; |
| 1079 | |
| 1080 | data |= IGP01E1000_PSCFR_SMART_SPEED; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1081 | ret_val = phy->ops.write_reg(hw, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1082 | IGP01E1000_PHY_PORT_CONFIG, |
| 1083 | data); |
| 1084 | if (ret_val) |
| 1085 | goto out; |
| 1086 | } else if (phy->smart_speed == e1000_smart_speed_off) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1087 | ret_val = phy->ops.read_reg(hw, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1088 | IGP01E1000_PHY_PORT_CONFIG, |
| 1089 | &data); |
| 1090 | if (ret_val) |
| 1091 | goto out; |
| 1092 | |
| 1093 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1094 | ret_val = phy->ops.write_reg(hw, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1095 | IGP01E1000_PHY_PORT_CONFIG, |
| 1096 | data); |
| 1097 | if (ret_val) |
| 1098 | goto out; |
| 1099 | } |
| 1100 | } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || |
| 1101 | (phy->autoneg_advertised == E1000_ALL_NOT_GIG) || |
| 1102 | (phy->autoneg_advertised == E1000_ALL_10_SPEED)) { |
| 1103 | data |= IGP02E1000_PM_D3_LPLU; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1104 | ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1105 | data); |
| 1106 | if (ret_val) |
| 1107 | goto out; |
| 1108 | |
| 1109 | /* When LPLU is enabled, we should disable SmartSpeed */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1110 | ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1111 | &data); |
| 1112 | if (ret_val) |
| 1113 | goto out; |
| 1114 | |
| 1115 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1116 | ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1117 | data); |
| 1118 | } |
| 1119 | |
| 1120 | out: |
| 1121 | return ret_val; |
| 1122 | } |
| 1123 | |
| 1124 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1125 | * igb_check_downshift - Checks whether a downshift in speed occured |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1126 | * @hw: pointer to the HW structure |
| 1127 | * |
| 1128 | * Success returns 0, Failure returns 1 |
| 1129 | * |
| 1130 | * A downshift is detected by querying the PHY link health. |
| 1131 | **/ |
| 1132 | s32 igb_check_downshift(struct e1000_hw *hw) |
| 1133 | { |
| 1134 | struct e1000_phy_info *phy = &hw->phy; |
| 1135 | s32 ret_val; |
| 1136 | u16 phy_data, offset, mask; |
| 1137 | |
| 1138 | switch (phy->type) { |
| 1139 | case e1000_phy_m88: |
| 1140 | case e1000_phy_gg82563: |
| 1141 | offset = M88E1000_PHY_SPEC_STATUS; |
| 1142 | mask = M88E1000_PSSR_DOWNSHIFT; |
| 1143 | break; |
| 1144 | case e1000_phy_igp_2: |
| 1145 | case e1000_phy_igp: |
| 1146 | case e1000_phy_igp_3: |
| 1147 | offset = IGP01E1000_PHY_LINK_HEALTH; |
| 1148 | mask = IGP01E1000_PLHR_SS_DOWNGRADE; |
| 1149 | break; |
| 1150 | default: |
| 1151 | /* speed downshift not supported */ |
| 1152 | phy->speed_downgraded = false; |
| 1153 | ret_val = 0; |
| 1154 | goto out; |
| 1155 | } |
| 1156 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1157 | ret_val = phy->ops.read_reg(hw, offset, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1158 | |
| 1159 | if (!ret_val) |
| 1160 | phy->speed_downgraded = (phy_data & mask) ? true : false; |
| 1161 | |
| 1162 | out: |
| 1163 | return ret_val; |
| 1164 | } |
| 1165 | |
| 1166 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1167 | * igb_check_polarity_m88 - Checks the polarity. |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1168 | * @hw: pointer to the HW structure |
| 1169 | * |
| 1170 | * Success returns 0, Failure returns -E1000_ERR_PHY (-2) |
| 1171 | * |
| 1172 | * Polarity is determined based on the PHY specific status register. |
| 1173 | **/ |
| 1174 | static s32 igb_check_polarity_m88(struct e1000_hw *hw) |
| 1175 | { |
| 1176 | struct e1000_phy_info *phy = &hw->phy; |
| 1177 | s32 ret_val; |
| 1178 | u16 data; |
| 1179 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1180 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1181 | |
| 1182 | if (!ret_val) |
| 1183 | phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY) |
| 1184 | ? e1000_rev_polarity_reversed |
| 1185 | : e1000_rev_polarity_normal; |
| 1186 | |
| 1187 | return ret_val; |
| 1188 | } |
| 1189 | |
| 1190 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1191 | * igb_check_polarity_igp - Checks the polarity. |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1192 | * @hw: pointer to the HW structure |
| 1193 | * |
| 1194 | * Success returns 0, Failure returns -E1000_ERR_PHY (-2) |
| 1195 | * |
| 1196 | * Polarity is determined based on the PHY port status register, and the |
| 1197 | * current speed (since there is no polarity at 100Mbps). |
| 1198 | **/ |
| 1199 | static s32 igb_check_polarity_igp(struct e1000_hw *hw) |
| 1200 | { |
| 1201 | struct e1000_phy_info *phy = &hw->phy; |
| 1202 | s32 ret_val; |
| 1203 | u16 data, offset, mask; |
| 1204 | |
| 1205 | /* |
| 1206 | * Polarity is determined based on the speed of |
| 1207 | * our connection. |
| 1208 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1209 | ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1210 | if (ret_val) |
| 1211 | goto out; |
| 1212 | |
| 1213 | if ((data & IGP01E1000_PSSR_SPEED_MASK) == |
| 1214 | IGP01E1000_PSSR_SPEED_1000MBPS) { |
| 1215 | offset = IGP01E1000_PHY_PCS_INIT_REG; |
| 1216 | mask = IGP01E1000_PHY_POLARITY_MASK; |
| 1217 | } else { |
| 1218 | /* |
| 1219 | * This really only applies to 10Mbps since |
| 1220 | * there is no polarity for 100Mbps (always 0). |
| 1221 | */ |
| 1222 | offset = IGP01E1000_PHY_PORT_STATUS; |
| 1223 | mask = IGP01E1000_PSSR_POLARITY_REVERSED; |
| 1224 | } |
| 1225 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1226 | ret_val = phy->ops.read_reg(hw, offset, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1227 | |
| 1228 | if (!ret_val) |
| 1229 | phy->cable_polarity = (data & mask) |
| 1230 | ? e1000_rev_polarity_reversed |
| 1231 | : e1000_rev_polarity_normal; |
| 1232 | |
| 1233 | out: |
| 1234 | return ret_val; |
| 1235 | } |
| 1236 | |
| 1237 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1238 | * igb_wait_autoneg - Wait for auto-neg compeletion |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1239 | * @hw: pointer to the HW structure |
| 1240 | * |
| 1241 | * Waits for auto-negotiation to complete or for the auto-negotiation time |
| 1242 | * limit to expire, which ever happens first. |
| 1243 | **/ |
| 1244 | static s32 igb_wait_autoneg(struct e1000_hw *hw) |
| 1245 | { |
| 1246 | s32 ret_val = 0; |
| 1247 | u16 i, phy_status; |
| 1248 | |
| 1249 | /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */ |
| 1250 | for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1251 | ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1252 | if (ret_val) |
| 1253 | break; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1254 | ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1255 | if (ret_val) |
| 1256 | break; |
| 1257 | if (phy_status & MII_SR_AUTONEG_COMPLETE) |
| 1258 | break; |
| 1259 | msleep(100); |
| 1260 | } |
| 1261 | |
| 1262 | /* |
| 1263 | * PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation |
| 1264 | * has completed. |
| 1265 | */ |
| 1266 | return ret_val; |
| 1267 | } |
| 1268 | |
| 1269 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1270 | * igb_phy_has_link - Polls PHY for link |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1271 | * @hw: pointer to the HW structure |
| 1272 | * @iterations: number of times to poll for link |
| 1273 | * @usec_interval: delay between polling attempts |
| 1274 | * @success: pointer to whether polling was successful or not |
| 1275 | * |
| 1276 | * Polls the PHY status register for link, 'iterations' number of times. |
| 1277 | **/ |
| 1278 | s32 igb_phy_has_link(struct e1000_hw *hw, u32 iterations, |
| 1279 | u32 usec_interval, bool *success) |
| 1280 | { |
| 1281 | s32 ret_val = 0; |
| 1282 | u16 i, phy_status; |
| 1283 | |
| 1284 | for (i = 0; i < iterations; i++) { |
| 1285 | /* |
| 1286 | * Some PHYs require the PHY_STATUS register to be read |
| 1287 | * twice due to the link bit being sticky. No harm doing |
| 1288 | * it across the board. |
| 1289 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1290 | ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1291 | if (ret_val) |
| 1292 | break; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1293 | ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1294 | if (ret_val) |
| 1295 | break; |
| 1296 | if (phy_status & MII_SR_LINK_STATUS) |
| 1297 | break; |
| 1298 | if (usec_interval >= 1000) |
| 1299 | mdelay(usec_interval/1000); |
| 1300 | else |
| 1301 | udelay(usec_interval); |
| 1302 | } |
| 1303 | |
| 1304 | *success = (i < iterations) ? true : false; |
| 1305 | |
| 1306 | return ret_val; |
| 1307 | } |
| 1308 | |
| 1309 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1310 | * igb_get_cable_length_m88 - Determine cable length for m88 PHY |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1311 | * @hw: pointer to the HW structure |
| 1312 | * |
| 1313 | * Reads the PHY specific status register to retrieve the cable length |
| 1314 | * information. The cable length is determined by averaging the minimum and |
| 1315 | * maximum values to get the "average" cable length. The m88 PHY has four |
| 1316 | * possible cable length values, which are: |
| 1317 | * Register Value Cable Length |
| 1318 | * 0 < 50 meters |
| 1319 | * 1 50 - 80 meters |
| 1320 | * 2 80 - 110 meters |
| 1321 | * 3 110 - 140 meters |
| 1322 | * 4 > 140 meters |
| 1323 | **/ |
| 1324 | s32 igb_get_cable_length_m88(struct e1000_hw *hw) |
| 1325 | { |
| 1326 | struct e1000_phy_info *phy = &hw->phy; |
| 1327 | s32 ret_val; |
| 1328 | u16 phy_data, index; |
| 1329 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1330 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1331 | if (ret_val) |
| 1332 | goto out; |
| 1333 | |
| 1334 | index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >> |
| 1335 | M88E1000_PSSR_CABLE_LENGTH_SHIFT; |
| 1336 | phy->min_cable_length = e1000_m88_cable_length_table[index]; |
| 1337 | phy->max_cable_length = e1000_m88_cable_length_table[index+1]; |
| 1338 | |
| 1339 | phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2; |
| 1340 | |
| 1341 | out: |
| 1342 | return ret_val; |
| 1343 | } |
| 1344 | |
| 1345 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1346 | * igb_get_cable_length_igp_2 - Determine cable length for igp2 PHY |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1347 | * @hw: pointer to the HW structure |
| 1348 | * |
| 1349 | * The automatic gain control (agc) normalizes the amplitude of the |
| 1350 | * received signal, adjusting for the attenuation produced by the |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1351 | * cable. By reading the AGC registers, which represent the |
| 1352 | * combination of coarse and fine gain value, the value can be put |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1353 | * into a lookup table to obtain the approximate cable length |
| 1354 | * for each channel. |
| 1355 | **/ |
| 1356 | s32 igb_get_cable_length_igp_2(struct e1000_hw *hw) |
| 1357 | { |
| 1358 | struct e1000_phy_info *phy = &hw->phy; |
| 1359 | s32 ret_val = 0; |
| 1360 | u16 phy_data, i, agc_value = 0; |
| 1361 | u16 cur_agc_index, max_agc_index = 0; |
| 1362 | u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1; |
| 1363 | u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = |
| 1364 | {IGP02E1000_PHY_AGC_A, |
| 1365 | IGP02E1000_PHY_AGC_B, |
| 1366 | IGP02E1000_PHY_AGC_C, |
| 1367 | IGP02E1000_PHY_AGC_D}; |
| 1368 | |
| 1369 | /* Read the AGC registers for all channels */ |
| 1370 | for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1371 | ret_val = phy->ops.read_reg(hw, agc_reg_array[i], &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1372 | if (ret_val) |
| 1373 | goto out; |
| 1374 | |
| 1375 | /* |
| 1376 | * Getting bits 15:9, which represent the combination of |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1377 | * coarse and fine gain values. The result is a number |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1378 | * that can be put into the lookup table to obtain the |
| 1379 | * approximate cable length. |
| 1380 | */ |
| 1381 | cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) & |
| 1382 | IGP02E1000_AGC_LENGTH_MASK; |
| 1383 | |
| 1384 | /* Array index bound check. */ |
| 1385 | if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) || |
| 1386 | (cur_agc_index == 0)) { |
| 1387 | ret_val = -E1000_ERR_PHY; |
| 1388 | goto out; |
| 1389 | } |
| 1390 | |
| 1391 | /* Remove min & max AGC values from calculation. */ |
| 1392 | if (e1000_igp_2_cable_length_table[min_agc_index] > |
| 1393 | e1000_igp_2_cable_length_table[cur_agc_index]) |
| 1394 | min_agc_index = cur_agc_index; |
| 1395 | if (e1000_igp_2_cable_length_table[max_agc_index] < |
| 1396 | e1000_igp_2_cable_length_table[cur_agc_index]) |
| 1397 | max_agc_index = cur_agc_index; |
| 1398 | |
| 1399 | agc_value += e1000_igp_2_cable_length_table[cur_agc_index]; |
| 1400 | } |
| 1401 | |
| 1402 | agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] + |
| 1403 | e1000_igp_2_cable_length_table[max_agc_index]); |
| 1404 | agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2); |
| 1405 | |
| 1406 | /* Calculate cable length with the error range of +/- 10 meters. */ |
| 1407 | phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ? |
| 1408 | (agc_value - IGP02E1000_AGC_RANGE) : 0; |
| 1409 | phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE; |
| 1410 | |
| 1411 | phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2; |
| 1412 | |
| 1413 | out: |
| 1414 | return ret_val; |
| 1415 | } |
| 1416 | |
| 1417 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1418 | * igb_get_phy_info_m88 - Retrieve PHY information |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1419 | * @hw: pointer to the HW structure |
| 1420 | * |
| 1421 | * Valid for only copper links. Read the PHY status register (sticky read) |
| 1422 | * to verify that link is up. Read the PHY special control register to |
| 1423 | * determine the polarity and 10base-T extended distance. Read the PHY |
| 1424 | * special status register to determine MDI/MDIx and current speed. If |
| 1425 | * speed is 1000, then determine cable length, local and remote receiver. |
| 1426 | **/ |
| 1427 | s32 igb_get_phy_info_m88(struct e1000_hw *hw) |
| 1428 | { |
| 1429 | struct e1000_phy_info *phy = &hw->phy; |
| 1430 | s32 ret_val; |
| 1431 | u16 phy_data; |
| 1432 | bool link; |
| 1433 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1434 | if (phy->media_type != e1000_media_type_copper) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1435 | hw_dbg("Phy info is only valid for copper media\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1436 | ret_val = -E1000_ERR_CONFIG; |
| 1437 | goto out; |
| 1438 | } |
| 1439 | |
| 1440 | ret_val = igb_phy_has_link(hw, 1, 0, &link); |
| 1441 | if (ret_val) |
| 1442 | goto out; |
| 1443 | |
| 1444 | if (!link) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1445 | hw_dbg("Phy info is only valid if link is up\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1446 | ret_val = -E1000_ERR_CONFIG; |
| 1447 | goto out; |
| 1448 | } |
| 1449 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1450 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1451 | if (ret_val) |
| 1452 | goto out; |
| 1453 | |
| 1454 | phy->polarity_correction = (phy_data & M88E1000_PSCR_POLARITY_REVERSAL) |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1455 | ? true : false; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1456 | |
| 1457 | ret_val = igb_check_polarity_m88(hw); |
| 1458 | if (ret_val) |
| 1459 | goto out; |
| 1460 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1461 | ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1462 | if (ret_val) |
| 1463 | goto out; |
| 1464 | |
| 1465 | phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX) ? true : false; |
| 1466 | |
| 1467 | if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1468 | ret_val = phy->ops.get_cable_length(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1469 | if (ret_val) |
| 1470 | goto out; |
| 1471 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1472 | ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &phy_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1473 | if (ret_val) |
| 1474 | goto out; |
| 1475 | |
| 1476 | phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) |
| 1477 | ? e1000_1000t_rx_status_ok |
| 1478 | : e1000_1000t_rx_status_not_ok; |
| 1479 | |
| 1480 | phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) |
| 1481 | ? e1000_1000t_rx_status_ok |
| 1482 | : e1000_1000t_rx_status_not_ok; |
| 1483 | } else { |
| 1484 | /* Set values to "undefined" */ |
| 1485 | phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; |
| 1486 | phy->local_rx = e1000_1000t_rx_status_undefined; |
| 1487 | phy->remote_rx = e1000_1000t_rx_status_undefined; |
| 1488 | } |
| 1489 | |
| 1490 | out: |
| 1491 | return ret_val; |
| 1492 | } |
| 1493 | |
| 1494 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1495 | * igb_get_phy_info_igp - Retrieve igp PHY information |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1496 | * @hw: pointer to the HW structure |
| 1497 | * |
| 1498 | * Read PHY status to determine if link is up. If link is up, then |
| 1499 | * set/determine 10base-T extended distance and polarity correction. Read |
| 1500 | * PHY port status to determine MDI/MDIx and speed. Based on the speed, |
| 1501 | * determine on the cable length, local and remote receiver. |
| 1502 | **/ |
| 1503 | s32 igb_get_phy_info_igp(struct e1000_hw *hw) |
| 1504 | { |
| 1505 | struct e1000_phy_info *phy = &hw->phy; |
| 1506 | s32 ret_val; |
| 1507 | u16 data; |
| 1508 | bool link; |
| 1509 | |
| 1510 | ret_val = igb_phy_has_link(hw, 1, 0, &link); |
| 1511 | if (ret_val) |
| 1512 | goto out; |
| 1513 | |
| 1514 | if (!link) { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1515 | hw_dbg("Phy info is only valid if link is up\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1516 | ret_val = -E1000_ERR_CONFIG; |
| 1517 | goto out; |
| 1518 | } |
| 1519 | |
| 1520 | phy->polarity_correction = true; |
| 1521 | |
| 1522 | ret_val = igb_check_polarity_igp(hw); |
| 1523 | if (ret_val) |
| 1524 | goto out; |
| 1525 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1526 | ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1527 | if (ret_val) |
| 1528 | goto out; |
| 1529 | |
| 1530 | phy->is_mdix = (data & IGP01E1000_PSSR_MDIX) ? true : false; |
| 1531 | |
| 1532 | if ((data & IGP01E1000_PSSR_SPEED_MASK) == |
| 1533 | IGP01E1000_PSSR_SPEED_1000MBPS) { |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1534 | ret_val = phy->ops.get_cable_length(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1535 | if (ret_val) |
| 1536 | goto out; |
| 1537 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1538 | ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1539 | if (ret_val) |
| 1540 | goto out; |
| 1541 | |
| 1542 | phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS) |
| 1543 | ? e1000_1000t_rx_status_ok |
| 1544 | : e1000_1000t_rx_status_not_ok; |
| 1545 | |
| 1546 | phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS) |
| 1547 | ? e1000_1000t_rx_status_ok |
| 1548 | : e1000_1000t_rx_status_not_ok; |
| 1549 | } else { |
| 1550 | phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; |
| 1551 | phy->local_rx = e1000_1000t_rx_status_undefined; |
| 1552 | phy->remote_rx = e1000_1000t_rx_status_undefined; |
| 1553 | } |
| 1554 | |
| 1555 | out: |
| 1556 | return ret_val; |
| 1557 | } |
| 1558 | |
| 1559 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1560 | * igb_phy_sw_reset - PHY software reset |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1561 | * @hw: pointer to the HW structure |
| 1562 | * |
| 1563 | * Does a software reset of the PHY by reading the PHY control register and |
| 1564 | * setting/write the control register reset bit to the PHY. |
| 1565 | **/ |
| 1566 | s32 igb_phy_sw_reset(struct e1000_hw *hw) |
| 1567 | { |
| 1568 | s32 ret_val; |
| 1569 | u16 phy_ctrl; |
| 1570 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1571 | ret_val = hw->phy.ops.read_reg(hw, PHY_CONTROL, &phy_ctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1572 | if (ret_val) |
| 1573 | goto out; |
| 1574 | |
| 1575 | phy_ctrl |= MII_CR_RESET; |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1576 | ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL, phy_ctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1577 | if (ret_val) |
| 1578 | goto out; |
| 1579 | |
| 1580 | udelay(1); |
| 1581 | |
| 1582 | out: |
| 1583 | return ret_val; |
| 1584 | } |
| 1585 | |
| 1586 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1587 | * igb_phy_hw_reset - PHY hardware reset |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1588 | * @hw: pointer to the HW structure |
| 1589 | * |
| 1590 | * Verify the reset block is not blocking us from resetting. Acquire |
| 1591 | * semaphore (if necessary) and read/set/write the device control reset |
| 1592 | * bit in the PHY. Wait the appropriate delay time for the device to |
| 1593 | * reset and relase the semaphore (if necessary). |
| 1594 | **/ |
| 1595 | s32 igb_phy_hw_reset(struct e1000_hw *hw) |
| 1596 | { |
| 1597 | struct e1000_phy_info *phy = &hw->phy; |
| 1598 | s32 ret_val; |
| 1599 | u32 ctrl; |
| 1600 | |
| 1601 | ret_val = igb_check_reset_block(hw); |
| 1602 | if (ret_val) { |
| 1603 | ret_val = 0; |
| 1604 | goto out; |
| 1605 | } |
| 1606 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1607 | ret_val = phy->ops.acquire(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1608 | if (ret_val) |
| 1609 | goto out; |
| 1610 | |
| 1611 | ctrl = rd32(E1000_CTRL); |
| 1612 | wr32(E1000_CTRL, ctrl | E1000_CTRL_PHY_RST); |
| 1613 | wrfl(); |
| 1614 | |
| 1615 | udelay(phy->reset_delay_us); |
| 1616 | |
| 1617 | wr32(E1000_CTRL, ctrl); |
| 1618 | wrfl(); |
| 1619 | |
| 1620 | udelay(150); |
| 1621 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1622 | phy->ops.release(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1623 | |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1624 | ret_val = phy->ops.get_cfg_done(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1625 | |
| 1626 | out: |
| 1627 | return ret_val; |
| 1628 | } |
| 1629 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1630 | /** |
Jeff Kirsher | 733596b | 2008-06-27 10:59:59 -0700 | [diff] [blame] | 1631 | * igb_phy_init_script_igp3 - Inits the IGP3 PHY |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1632 | * @hw: pointer to the HW structure |
| 1633 | * |
| 1634 | * Initializes a Intel Gigabit PHY3 when an EEPROM is not present. |
| 1635 | **/ |
| 1636 | s32 igb_phy_init_script_igp3(struct e1000_hw *hw) |
| 1637 | { |
Auke Kok | 652fff3 | 2008-06-27 11:00:18 -0700 | [diff] [blame] | 1638 | hw_dbg("Running IGP 3 PHY init script\n"); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1639 | |
| 1640 | /* PHY init IGP 3 */ |
| 1641 | /* Enable rise/fall, 10-mode work in class-A */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1642 | hw->phy.ops.write_reg(hw, 0x2F5B, 0x9018); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1643 | /* Remove all caps from Replica path filter */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1644 | hw->phy.ops.write_reg(hw, 0x2F52, 0x0000); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1645 | /* Bias trimming for ADC, AFE and Driver (Default) */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1646 | hw->phy.ops.write_reg(hw, 0x2FB1, 0x8B24); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1647 | /* Increase Hybrid poly bias */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1648 | hw->phy.ops.write_reg(hw, 0x2FB2, 0xF8F0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1649 | /* Add 4% to TX amplitude in Giga mode */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1650 | hw->phy.ops.write_reg(hw, 0x2010, 0x10B0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1651 | /* Disable trimming (TTT) */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1652 | hw->phy.ops.write_reg(hw, 0x2011, 0x0000); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1653 | /* Poly DC correction to 94.6% + 2% for all channels */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1654 | hw->phy.ops.write_reg(hw, 0x20DD, 0x249A); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1655 | /* ABS DC correction to 95.9% */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1656 | hw->phy.ops.write_reg(hw, 0x20DE, 0x00D3); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1657 | /* BG temp curve trim */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1658 | hw->phy.ops.write_reg(hw, 0x28B4, 0x04CE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1659 | /* Increasing ADC OPAMP stage 1 currents to max */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1660 | hw->phy.ops.write_reg(hw, 0x2F70, 0x29E4); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1661 | /* Force 1000 ( required for enabling PHY regs configuration) */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1662 | hw->phy.ops.write_reg(hw, 0x0000, 0x0140); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1663 | /* Set upd_freq to 6 */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1664 | hw->phy.ops.write_reg(hw, 0x1F30, 0x1606); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1665 | /* Disable NPDFE */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1666 | hw->phy.ops.write_reg(hw, 0x1F31, 0xB814); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1667 | /* Disable adaptive fixed FFE (Default) */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1668 | hw->phy.ops.write_reg(hw, 0x1F35, 0x002A); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1669 | /* Enable FFE hysteresis */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1670 | hw->phy.ops.write_reg(hw, 0x1F3E, 0x0067); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1671 | /* Fixed FFE for short cable lengths */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1672 | hw->phy.ops.write_reg(hw, 0x1F54, 0x0065); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1673 | /* Fixed FFE for medium cable lengths */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1674 | hw->phy.ops.write_reg(hw, 0x1F55, 0x002A); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1675 | /* Fixed FFE for long cable lengths */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1676 | hw->phy.ops.write_reg(hw, 0x1F56, 0x002A); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1677 | /* Enable Adaptive Clip Threshold */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1678 | hw->phy.ops.write_reg(hw, 0x1F72, 0x3FB0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1679 | /* AHT reset limit to 1 */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1680 | hw->phy.ops.write_reg(hw, 0x1F76, 0xC0FF); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1681 | /* Set AHT master delay to 127 msec */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1682 | hw->phy.ops.write_reg(hw, 0x1F77, 0x1DEC); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1683 | /* Set scan bits for AHT */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1684 | hw->phy.ops.write_reg(hw, 0x1F78, 0xF9EF); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1685 | /* Set AHT Preset bits */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1686 | hw->phy.ops.write_reg(hw, 0x1F79, 0x0210); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1687 | /* Change integ_factor of channel A to 3 */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1688 | hw->phy.ops.write_reg(hw, 0x1895, 0x0003); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1689 | /* Change prop_factor of channels BCD to 8 */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1690 | hw->phy.ops.write_reg(hw, 0x1796, 0x0008); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1691 | /* Change cg_icount + enable integbp for channels BCD */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1692 | hw->phy.ops.write_reg(hw, 0x1798, 0xD008); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1693 | /* |
| 1694 | * Change cg_icount + enable integbp + change prop_factor_master |
| 1695 | * to 8 for channel A |
| 1696 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1697 | hw->phy.ops.write_reg(hw, 0x1898, 0xD918); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1698 | /* Disable AHT in Slave mode on channel A */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1699 | hw->phy.ops.write_reg(hw, 0x187A, 0x0800); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1700 | /* |
| 1701 | * Enable LPLU and disable AN to 1000 in non-D0a states, |
| 1702 | * Enable SPD+B2B |
| 1703 | */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1704 | hw->phy.ops.write_reg(hw, 0x0019, 0x008D); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1705 | /* Enable restart AN on an1000_dis change */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1706 | hw->phy.ops.write_reg(hw, 0x001B, 0x2080); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1707 | /* Enable wh_fifo read clock in 10/100 modes */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1708 | hw->phy.ops.write_reg(hw, 0x0014, 0x0045); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1709 | /* Restart AN, Speed selection is 1000 */ |
Alexander Duyck | a8d2a0c | 2009-02-06 23:17:26 +0000 | [diff] [blame] | 1710 | hw->phy.ops.write_reg(hw, 0x0000, 0x1340); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1711 | |
| 1712 | return 0; |
| 1713 | } |
| 1714 | |