Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | |
| 3 | Intel PRO/1000 Linux driver |
Bruce Allan | 0d6057e | 2011-01-04 01:16:44 +0000 | [diff] [blame] | 4 | Copyright(c) 1999 - 2011 Intel Corporation. |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [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 | Linux NICS <linux.nics@intel.com> |
| 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| 25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 26 | |
| 27 | *******************************************************************************/ |
| 28 | |
| 29 | #include <linux/delay.h> |
| 30 | |
| 31 | #include "e1000.h" |
| 32 | |
| 33 | static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw); |
| 34 | static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw); |
| 35 | static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active); |
| 36 | static s32 e1000_wait_autoneg(struct e1000_hw *hw); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 37 | static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg); |
| 38 | static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset, |
| 39 | u16 *data, bool read); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 40 | static u32 e1000_get_phy_addr_for_hv_page(u32 page); |
| 41 | static s32 e1000_access_phy_debug_regs_hv(struct e1000_hw *hw, u32 offset, |
| 42 | u16 *data, bool read); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 43 | |
| 44 | /* Cable length tables */ |
Bruce Allan | 6480641 | 2010-12-11 05:53:42 +0000 | [diff] [blame] | 45 | static const u16 e1000_m88_cable_length_table[] = { |
| 46 | 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED }; |
Bruce Allan | eb656d4 | 2009-12-01 15:47:02 +0000 | [diff] [blame] | 47 | #define M88E1000_CABLE_LENGTH_TABLE_SIZE \ |
| 48 | ARRAY_SIZE(e1000_m88_cable_length_table) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 49 | |
Bruce Allan | 6480641 | 2010-12-11 05:53:42 +0000 | [diff] [blame] | 50 | static const u16 e1000_igp_2_cable_length_table[] = { |
| 51 | 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, 0, 0, 0, 3, |
| 52 | 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, 6, 10, 14, 18, 22, |
| 53 | 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, 21, 26, 31, 35, 40, |
| 54 | 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, 40, 45, 51, 56, 61, |
| 55 | 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, 60, 66, 72, 77, 82, |
| 56 | 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, 83, 89, 95, |
| 57 | 100, 105, 109, 113, 116, 119, 122, 124, 104, 109, 114, 118, 121, |
| 58 | 124}; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 59 | #define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \ |
Alejandro Martinez Ruiz | c00acf4 | 2007-10-18 10:16:33 +0200 | [diff] [blame] | 60 | ARRAY_SIZE(e1000_igp_2_cable_length_table) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 61 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 62 | #define BM_PHY_REG_PAGE(offset) \ |
| 63 | ((u16)(((offset) >> PHY_PAGE_SHIFT) & 0xFFFF)) |
| 64 | #define BM_PHY_REG_NUM(offset) \ |
| 65 | ((u16)(((offset) & MAX_PHY_REG_ADDRESS) |\ |
| 66 | (((offset) >> (PHY_UPPER_SHIFT - PHY_PAGE_SHIFT)) &\ |
| 67 | ~MAX_PHY_REG_ADDRESS))) |
| 68 | |
| 69 | #define HV_INTC_FC_PAGE_START 768 |
| 70 | #define I82578_ADDR_REG 29 |
| 71 | #define I82577_ADDR_REG 16 |
| 72 | #define I82577_CFG_REG 22 |
| 73 | #define I82577_CFG_ASSERT_CRS_ON_TX (1 << 15) |
| 74 | #define I82577_CFG_ENABLE_DOWNSHIFT (3 << 10) /* auto downshift 100/10 */ |
| 75 | #define I82577_CTRL_REG 23 |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 76 | |
| 77 | /* 82577 specific PHY registers */ |
| 78 | #define I82577_PHY_CTRL_2 18 |
| 79 | #define I82577_PHY_STATUS_2 26 |
| 80 | #define I82577_PHY_DIAG_STATUS 31 |
| 81 | |
| 82 | /* I82577 PHY Status 2 */ |
| 83 | #define I82577_PHY_STATUS2_REV_POLARITY 0x0400 |
| 84 | #define I82577_PHY_STATUS2_MDIX 0x0800 |
| 85 | #define I82577_PHY_STATUS2_SPEED_MASK 0x0300 |
| 86 | #define I82577_PHY_STATUS2_SPEED_1000MBPS 0x0200 |
| 87 | |
| 88 | /* I82577 PHY Control 2 */ |
| 89 | #define I82577_PHY_CTRL2_AUTO_MDIX 0x0400 |
| 90 | #define I82577_PHY_CTRL2_FORCE_MDI_MDIX 0x0200 |
| 91 | |
| 92 | /* I82577 PHY Diagnostics Status */ |
| 93 | #define I82577_DSTATUS_CABLE_LENGTH 0x03FC |
| 94 | #define I82577_DSTATUS_CABLE_LENGTH_SHIFT 2 |
| 95 | |
| 96 | /* BM PHY Copper Specific Control 1 */ |
| 97 | #define BM_CS_CTRL1 16 |
| 98 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 99 | #define HV_MUX_DATA_CTRL PHY_REG(776, 16) |
| 100 | #define HV_MUX_DATA_CTRL_GEN_TO_MAC 0x0400 |
| 101 | #define HV_MUX_DATA_CTRL_FORCE_SPEED 0x0004 |
| 102 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 103 | /** |
| 104 | * e1000e_check_reset_block_generic - Check if PHY reset is blocked |
| 105 | * @hw: pointer to the HW structure |
| 106 | * |
| 107 | * Read the PHY management control register and check whether a PHY reset |
| 108 | * is blocked. If a reset is not blocked return 0, otherwise |
| 109 | * return E1000_BLK_PHY_RESET (12). |
| 110 | **/ |
| 111 | s32 e1000e_check_reset_block_generic(struct e1000_hw *hw) |
| 112 | { |
| 113 | u32 manc; |
| 114 | |
| 115 | manc = er32(MANC); |
| 116 | |
| 117 | return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? |
| 118 | E1000_BLK_PHY_RESET : 0; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * e1000e_get_phy_id - Retrieve the PHY ID and revision |
| 123 | * @hw: pointer to the HW structure |
| 124 | * |
| 125 | * Reads the PHY registers and stores the PHY ID and possibly the PHY |
| 126 | * revision in the hardware structure. |
| 127 | **/ |
| 128 | s32 e1000e_get_phy_id(struct e1000_hw *hw) |
| 129 | { |
| 130 | struct e1000_phy_info *phy = &hw->phy; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 131 | s32 ret_val = 0; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 132 | u16 phy_id; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 133 | u16 retry_count = 0; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 134 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 135 | if (!(phy->ops.read_reg)) |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 136 | goto out; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 137 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 138 | while (retry_count < 2) { |
| 139 | ret_val = e1e_rphy(hw, PHY_ID1, &phy_id); |
| 140 | if (ret_val) |
| 141 | goto out; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 142 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 143 | phy->id = (u32)(phy_id << 16); |
| 144 | udelay(20); |
| 145 | ret_val = e1e_rphy(hw, PHY_ID2, &phy_id); |
| 146 | if (ret_val) |
| 147 | goto out; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 148 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 149 | phy->id |= (u32)(phy_id & PHY_REVISION_MASK); |
| 150 | phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK); |
| 151 | |
| 152 | if (phy->id != 0 && phy->id != PHY_REVISION_MASK) |
| 153 | goto out; |
| 154 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 155 | retry_count++; |
| 156 | } |
| 157 | out: |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 158 | return ret_val; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | /** |
| 162 | * e1000e_phy_reset_dsp - Reset PHY DSP |
| 163 | * @hw: pointer to the HW structure |
| 164 | * |
| 165 | * Reset the digital signal processor. |
| 166 | **/ |
| 167 | s32 e1000e_phy_reset_dsp(struct e1000_hw *hw) |
| 168 | { |
| 169 | s32 ret_val; |
| 170 | |
| 171 | ret_val = e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0xC1); |
| 172 | if (ret_val) |
| 173 | return ret_val; |
| 174 | |
| 175 | return e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0); |
| 176 | } |
| 177 | |
| 178 | /** |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 179 | * e1000e_read_phy_reg_mdic - Read MDI control register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 180 | * @hw: pointer to the HW structure |
| 181 | * @offset: register offset to be read |
| 182 | * @data: pointer to the read data |
| 183 | * |
Auke Kok | 489815c | 2008-02-21 15:11:07 -0800 | [diff] [blame] | 184 | * Reads the MDI control register in the PHY at offset and stores the |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 185 | * information read to data. |
| 186 | **/ |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 187 | s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 188 | { |
| 189 | struct e1000_phy_info *phy = &hw->phy; |
| 190 | u32 i, mdic = 0; |
| 191 | |
| 192 | if (offset > MAX_PHY_REG_ADDRESS) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 193 | e_dbg("PHY Address %d is out of range\n", offset); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 194 | return -E1000_ERR_PARAM; |
| 195 | } |
| 196 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 197 | /* |
| 198 | * Set up Op-code, Phy Address, and register offset in the MDI |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 199 | * Control register. The MAC will take care of interfacing with the |
| 200 | * PHY to retrieve the desired data. |
| 201 | */ |
| 202 | mdic = ((offset << E1000_MDIC_REG_SHIFT) | |
| 203 | (phy->addr << E1000_MDIC_PHY_SHIFT) | |
| 204 | (E1000_MDIC_OP_READ)); |
| 205 | |
| 206 | ew32(MDIC, mdic); |
| 207 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 208 | /* |
| 209 | * Poll the ready bit to see if the MDI read completed |
| 210 | * Increasing the time out as testing showed failures with |
| 211 | * the lower time out |
| 212 | */ |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 213 | for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) { |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 214 | udelay(50); |
| 215 | mdic = er32(MDIC); |
| 216 | if (mdic & E1000_MDIC_READY) |
| 217 | break; |
| 218 | } |
| 219 | if (!(mdic & E1000_MDIC_READY)) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 220 | e_dbg("MDI Read did not complete\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 221 | return -E1000_ERR_PHY; |
| 222 | } |
| 223 | if (mdic & E1000_MDIC_ERROR) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 224 | e_dbg("MDI Error\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 225 | return -E1000_ERR_PHY; |
| 226 | } |
| 227 | *data = (u16) mdic; |
| 228 | |
Bruce Allan | 664dc87 | 2010-11-24 06:01:46 +0000 | [diff] [blame] | 229 | /* |
| 230 | * Allow some time after each MDIC transaction to avoid |
| 231 | * reading duplicate data in the next MDIC transaction. |
| 232 | */ |
| 233 | if (hw->mac.type == e1000_pch2lan) |
| 234 | udelay(100); |
| 235 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 236 | return 0; |
| 237 | } |
| 238 | |
| 239 | /** |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 240 | * e1000e_write_phy_reg_mdic - Write MDI control register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 241 | * @hw: pointer to the HW structure |
| 242 | * @offset: register offset to write to |
| 243 | * @data: data to write to register at offset |
| 244 | * |
| 245 | * Writes data to MDI control register in the PHY at offset. |
| 246 | **/ |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 247 | s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 248 | { |
| 249 | struct e1000_phy_info *phy = &hw->phy; |
| 250 | u32 i, mdic = 0; |
| 251 | |
| 252 | if (offset > MAX_PHY_REG_ADDRESS) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 253 | e_dbg("PHY Address %d is out of range\n", offset); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 254 | return -E1000_ERR_PARAM; |
| 255 | } |
| 256 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 257 | /* |
| 258 | * Set up Op-code, Phy Address, and register offset in the MDI |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 259 | * Control register. The MAC will take care of interfacing with the |
| 260 | * PHY to retrieve the desired data. |
| 261 | */ |
| 262 | mdic = (((u32)data) | |
| 263 | (offset << E1000_MDIC_REG_SHIFT) | |
| 264 | (phy->addr << E1000_MDIC_PHY_SHIFT) | |
| 265 | (E1000_MDIC_OP_WRITE)); |
| 266 | |
| 267 | ew32(MDIC, mdic); |
| 268 | |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 269 | /* |
| 270 | * Poll the ready bit to see if the MDI read completed |
| 271 | * Increasing the time out as testing showed failures with |
| 272 | * the lower time out |
| 273 | */ |
| 274 | for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) { |
| 275 | udelay(50); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 276 | mdic = er32(MDIC); |
| 277 | if (mdic & E1000_MDIC_READY) |
| 278 | break; |
| 279 | } |
| 280 | if (!(mdic & E1000_MDIC_READY)) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 281 | e_dbg("MDI Write did not complete\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 282 | return -E1000_ERR_PHY; |
| 283 | } |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 284 | if (mdic & E1000_MDIC_ERROR) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 285 | e_dbg("MDI Error\n"); |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 286 | return -E1000_ERR_PHY; |
| 287 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 288 | |
Bruce Allan | 664dc87 | 2010-11-24 06:01:46 +0000 | [diff] [blame] | 289 | /* |
| 290 | * Allow some time after each MDIC transaction to avoid |
| 291 | * reading duplicate data in the next MDIC transaction. |
| 292 | */ |
| 293 | if (hw->mac.type == e1000_pch2lan) |
| 294 | udelay(100); |
| 295 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * e1000e_read_phy_reg_m88 - Read m88 PHY register |
| 301 | * @hw: pointer to the HW structure |
| 302 | * @offset: register offset to be read |
| 303 | * @data: pointer to the read data |
| 304 | * |
| 305 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
| 306 | * and storing the retrieved information in data. Release any acquired |
| 307 | * semaphores before exiting. |
| 308 | **/ |
| 309 | s32 e1000e_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data) |
| 310 | { |
| 311 | s32 ret_val; |
| 312 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 313 | ret_val = hw->phy.ops.acquire(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 314 | if (ret_val) |
| 315 | return ret_val; |
| 316 | |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 317 | ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 318 | data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 319 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 320 | hw->phy.ops.release(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 321 | |
| 322 | return ret_val; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * e1000e_write_phy_reg_m88 - Write m88 PHY register |
| 327 | * @hw: pointer to the HW structure |
| 328 | * @offset: register offset to write to |
| 329 | * @data: data to write at register offset |
| 330 | * |
| 331 | * Acquires semaphore, if necessary, then writes the data to PHY register |
| 332 | * at the offset. Release any acquired semaphores before exiting. |
| 333 | **/ |
| 334 | s32 e1000e_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data) |
| 335 | { |
| 336 | s32 ret_val; |
| 337 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 338 | ret_val = hw->phy.ops.acquire(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 339 | if (ret_val) |
| 340 | return ret_val; |
| 341 | |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 342 | ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 343 | data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 344 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 345 | hw->phy.ops.release(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 346 | |
| 347 | return ret_val; |
| 348 | } |
| 349 | |
| 350 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 351 | * __e1000e_read_phy_reg_igp - Read igp PHY register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 352 | * @hw: pointer to the HW structure |
| 353 | * @offset: register offset to be read |
| 354 | * @data: pointer to the read data |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 355 | * @locked: semaphore has already been acquired or not |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 356 | * |
| 357 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 358 | * and stores the retrieved information in data. Release any acquired |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 359 | * semaphores before exiting. |
| 360 | **/ |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 361 | static s32 __e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data, |
| 362 | bool locked) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 363 | { |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 364 | s32 ret_val = 0; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 365 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 366 | if (!locked) { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 367 | if (!(hw->phy.ops.acquire)) |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 368 | goto out; |
| 369 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 370 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 371 | if (ret_val) |
| 372 | goto out; |
| 373 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 374 | |
| 375 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 376 | ret_val = e1000e_write_phy_reg_mdic(hw, |
| 377 | IGP01E1000_PHY_PAGE_SELECT, |
| 378 | (u16)offset); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 379 | if (ret_val) |
| 380 | goto release; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 381 | } |
| 382 | |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 383 | ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 384 | data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 385 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 386 | release: |
| 387 | if (!locked) |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 388 | hw->phy.ops.release(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 389 | out: |
| 390 | return ret_val; |
| 391 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 392 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 393 | /** |
| 394 | * e1000e_read_phy_reg_igp - Read igp PHY register |
| 395 | * @hw: pointer to the HW structure |
| 396 | * @offset: register offset to be read |
| 397 | * @data: pointer to the read data |
| 398 | * |
| 399 | * Acquires semaphore then reads the PHY register at offset and stores the |
| 400 | * retrieved information in data. |
| 401 | * Release the acquired semaphore before exiting. |
| 402 | **/ |
| 403 | s32 e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data) |
| 404 | { |
| 405 | return __e1000e_read_phy_reg_igp(hw, offset, data, false); |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * e1000e_read_phy_reg_igp_locked - Read igp PHY register |
| 410 | * @hw: pointer to the HW structure |
| 411 | * @offset: register offset to be read |
| 412 | * @data: pointer to the read data |
| 413 | * |
| 414 | * Reads the PHY register at offset and stores the retrieved information |
| 415 | * in data. Assumes semaphore already acquired. |
| 416 | **/ |
| 417 | s32 e1000e_read_phy_reg_igp_locked(struct e1000_hw *hw, u32 offset, u16 *data) |
| 418 | { |
| 419 | return __e1000e_read_phy_reg_igp(hw, offset, data, true); |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * e1000e_write_phy_reg_igp - Write igp PHY register |
| 424 | * @hw: pointer to the HW structure |
| 425 | * @offset: register offset to write to |
| 426 | * @data: data to write at register offset |
| 427 | * @locked: semaphore has already been acquired or not |
| 428 | * |
| 429 | * Acquires semaphore, if necessary, then writes the data to PHY register |
| 430 | * at the offset. Release any acquired semaphores before exiting. |
| 431 | **/ |
| 432 | static s32 __e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data, |
| 433 | bool locked) |
| 434 | { |
| 435 | s32 ret_val = 0; |
| 436 | |
| 437 | if (!locked) { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 438 | if (!(hw->phy.ops.acquire)) |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 439 | goto out; |
| 440 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 441 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 442 | if (ret_val) |
| 443 | goto out; |
| 444 | } |
| 445 | |
| 446 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
| 447 | ret_val = e1000e_write_phy_reg_mdic(hw, |
| 448 | IGP01E1000_PHY_PAGE_SELECT, |
| 449 | (u16)offset); |
| 450 | if (ret_val) |
| 451 | goto release; |
| 452 | } |
| 453 | |
| 454 | ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 455 | data); |
| 456 | |
| 457 | release: |
| 458 | if (!locked) |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 459 | hw->phy.ops.release(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 460 | |
| 461 | out: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 462 | return ret_val; |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * e1000e_write_phy_reg_igp - Write igp PHY register |
| 467 | * @hw: pointer to the HW structure |
| 468 | * @offset: register offset to write to |
| 469 | * @data: data to write at register offset |
| 470 | * |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 471 | * Acquires semaphore then writes the data to PHY register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 472 | * at the offset. Release any acquired semaphores before exiting. |
| 473 | **/ |
| 474 | s32 e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data) |
| 475 | { |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 476 | return __e1000e_write_phy_reg_igp(hw, offset, data, false); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 480 | * e1000e_write_phy_reg_igp_locked - Write igp PHY register |
| 481 | * @hw: pointer to the HW structure |
| 482 | * @offset: register offset to write to |
| 483 | * @data: data to write at register offset |
| 484 | * |
| 485 | * Writes the data to PHY register at the offset. |
| 486 | * Assumes semaphore already acquired. |
| 487 | **/ |
| 488 | s32 e1000e_write_phy_reg_igp_locked(struct e1000_hw *hw, u32 offset, u16 data) |
| 489 | { |
| 490 | return __e1000e_write_phy_reg_igp(hw, offset, data, true); |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * __e1000_read_kmrn_reg - Read kumeran register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 495 | * @hw: pointer to the HW structure |
| 496 | * @offset: register offset to be read |
| 497 | * @data: pointer to the read data |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 498 | * @locked: semaphore has already been acquired or not |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 499 | * |
| 500 | * Acquires semaphore, if necessary. Then reads the PHY register at offset |
| 501 | * using the kumeran interface. The information retrieved is stored in data. |
| 502 | * Release any acquired semaphores before exiting. |
| 503 | **/ |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 504 | static s32 __e1000_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data, |
| 505 | bool locked) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 506 | { |
| 507 | u32 kmrnctrlsta; |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 508 | s32 ret_val = 0; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 509 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 510 | if (!locked) { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 511 | if (!(hw->phy.ops.acquire)) |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 512 | goto out; |
| 513 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 514 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 515 | if (ret_val) |
| 516 | goto out; |
| 517 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 518 | |
| 519 | kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) & |
| 520 | E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN; |
| 521 | ew32(KMRNCTRLSTA, kmrnctrlsta); |
| 522 | |
| 523 | udelay(2); |
| 524 | |
| 525 | kmrnctrlsta = er32(KMRNCTRLSTA); |
| 526 | *data = (u16)kmrnctrlsta; |
| 527 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 528 | if (!locked) |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 529 | hw->phy.ops.release(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 530 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 531 | out: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 532 | return ret_val; |
| 533 | } |
| 534 | |
| 535 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 536 | * e1000e_read_kmrn_reg - Read kumeran register |
| 537 | * @hw: pointer to the HW structure |
| 538 | * @offset: register offset to be read |
| 539 | * @data: pointer to the read data |
| 540 | * |
| 541 | * Acquires semaphore then reads the PHY register at offset using the |
| 542 | * kumeran interface. The information retrieved is stored in data. |
| 543 | * Release the acquired semaphore before exiting. |
| 544 | **/ |
| 545 | s32 e1000e_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data) |
| 546 | { |
| 547 | return __e1000_read_kmrn_reg(hw, offset, data, false); |
| 548 | } |
| 549 | |
| 550 | /** |
Bruce Allan | 1d5846b | 2009-10-29 13:46:05 +0000 | [diff] [blame] | 551 | * e1000e_read_kmrn_reg_locked - Read kumeran register |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 552 | * @hw: pointer to the HW structure |
| 553 | * @offset: register offset to be read |
| 554 | * @data: pointer to the read data |
| 555 | * |
| 556 | * Reads the PHY register at offset using the kumeran interface. The |
| 557 | * information retrieved is stored in data. |
| 558 | * Assumes semaphore already acquired. |
| 559 | **/ |
Bruce Allan | 1d5846b | 2009-10-29 13:46:05 +0000 | [diff] [blame] | 560 | s32 e1000e_read_kmrn_reg_locked(struct e1000_hw *hw, u32 offset, u16 *data) |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 561 | { |
| 562 | return __e1000_read_kmrn_reg(hw, offset, data, true); |
| 563 | } |
| 564 | |
| 565 | /** |
| 566 | * __e1000_write_kmrn_reg - Write kumeran register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 567 | * @hw: pointer to the HW structure |
| 568 | * @offset: register offset to write to |
| 569 | * @data: data to write at register offset |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 570 | * @locked: semaphore has already been acquired or not |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 571 | * |
| 572 | * Acquires semaphore, if necessary. Then write the data to PHY register |
| 573 | * at the offset using the kumeran interface. Release any acquired semaphores |
| 574 | * before exiting. |
| 575 | **/ |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 576 | static s32 __e1000_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data, |
| 577 | bool locked) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 578 | { |
| 579 | u32 kmrnctrlsta; |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 580 | s32 ret_val = 0; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 581 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 582 | if (!locked) { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 583 | if (!(hw->phy.ops.acquire)) |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 584 | goto out; |
| 585 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 586 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 587 | if (ret_val) |
| 588 | goto out; |
| 589 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 590 | |
| 591 | kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) & |
| 592 | E1000_KMRNCTRLSTA_OFFSET) | data; |
| 593 | ew32(KMRNCTRLSTA, kmrnctrlsta); |
| 594 | |
| 595 | udelay(2); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 596 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 597 | if (!locked) |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 598 | hw->phy.ops.release(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 599 | |
| 600 | out: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 601 | return ret_val; |
| 602 | } |
| 603 | |
| 604 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 605 | * e1000e_write_kmrn_reg - Write kumeran register |
| 606 | * @hw: pointer to the HW structure |
| 607 | * @offset: register offset to write to |
| 608 | * @data: data to write at register offset |
| 609 | * |
| 610 | * Acquires semaphore then writes the data to the PHY register at the offset |
| 611 | * using the kumeran interface. Release the acquired semaphore before exiting. |
| 612 | **/ |
| 613 | s32 e1000e_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data) |
| 614 | { |
| 615 | return __e1000_write_kmrn_reg(hw, offset, data, false); |
| 616 | } |
| 617 | |
| 618 | /** |
Bruce Allan | 1d5846b | 2009-10-29 13:46:05 +0000 | [diff] [blame] | 619 | * e1000e_write_kmrn_reg_locked - Write kumeran register |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 620 | * @hw: pointer to the HW structure |
| 621 | * @offset: register offset to write to |
| 622 | * @data: data to write at register offset |
| 623 | * |
| 624 | * Write the data to PHY register at the offset using the kumeran interface. |
| 625 | * Assumes semaphore already acquired. |
| 626 | **/ |
Bruce Allan | 1d5846b | 2009-10-29 13:46:05 +0000 | [diff] [blame] | 627 | s32 e1000e_write_kmrn_reg_locked(struct e1000_hw *hw, u32 offset, u16 data) |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 628 | { |
| 629 | return __e1000_write_kmrn_reg(hw, offset, data, true); |
| 630 | } |
| 631 | |
| 632 | /** |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 633 | * e1000_copper_link_setup_82577 - Setup 82577 PHY for copper link |
| 634 | * @hw: pointer to the HW structure |
| 635 | * |
| 636 | * Sets up Carrier-sense on Transmit and downshift values. |
| 637 | **/ |
| 638 | s32 e1000_copper_link_setup_82577(struct e1000_hw *hw) |
| 639 | { |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 640 | s32 ret_val; |
| 641 | u16 phy_data; |
| 642 | |
Bruce Allan | af667a2 | 2010-12-31 06:10:01 +0000 | [diff] [blame] | 643 | /* Enable CRS on Tx. This must be set for half-duplex operation. */ |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 644 | ret_val = e1e_rphy(hw, I82577_CFG_REG, &phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 645 | if (ret_val) |
| 646 | goto out; |
| 647 | |
| 648 | phy_data |= I82577_CFG_ASSERT_CRS_ON_TX; |
| 649 | |
| 650 | /* Enable downshift */ |
| 651 | phy_data |= I82577_CFG_ENABLE_DOWNSHIFT; |
| 652 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 653 | ret_val = e1e_wphy(hw, I82577_CFG_REG, phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 654 | |
| 655 | out: |
| 656 | return ret_val; |
| 657 | } |
| 658 | |
| 659 | /** |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 660 | * e1000e_copper_link_setup_m88 - Setup m88 PHY's for copper link |
| 661 | * @hw: pointer to the HW structure |
| 662 | * |
| 663 | * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock |
| 664 | * and downshift values are set also. |
| 665 | **/ |
| 666 | s32 e1000e_copper_link_setup_m88(struct e1000_hw *hw) |
| 667 | { |
| 668 | struct e1000_phy_info *phy = &hw->phy; |
| 669 | s32 ret_val; |
| 670 | u16 phy_data; |
| 671 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 672 | /* Enable CRS on Tx. This must be set for half-duplex operation. */ |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 673 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
| 674 | if (ret_val) |
| 675 | return ret_val; |
| 676 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 677 | /* For BM PHY this bit is downshift enable */ |
| 678 | if (phy->type != e1000_phy_bm) |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 679 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 680 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 681 | /* |
| 682 | * Options: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 683 | * MDI/MDI-X = 0 (default) |
| 684 | * 0 - Auto for all speeds |
| 685 | * 1 - MDI mode |
| 686 | * 2 - MDI-X mode |
| 687 | * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) |
| 688 | */ |
| 689 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; |
| 690 | |
| 691 | switch (phy->mdix) { |
| 692 | case 1: |
| 693 | phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; |
| 694 | break; |
| 695 | case 2: |
| 696 | phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; |
| 697 | break; |
| 698 | case 3: |
| 699 | phy_data |= M88E1000_PSCR_AUTO_X_1000T; |
| 700 | break; |
| 701 | case 0: |
| 702 | default: |
| 703 | phy_data |= M88E1000_PSCR_AUTO_X_MODE; |
| 704 | break; |
| 705 | } |
| 706 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 707 | /* |
| 708 | * Options: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 709 | * disable_polarity_correction = 0 (default) |
| 710 | * Automatic Correction for Reversed Cable Polarity |
| 711 | * 0 - Disabled |
| 712 | * 1 - Enabled |
| 713 | */ |
| 714 | phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; |
| 715 | if (phy->disable_polarity_correction == 1) |
| 716 | phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; |
| 717 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 718 | /* Enable downshift on BM (disabled by default) */ |
| 719 | if (phy->type == e1000_phy_bm) |
| 720 | phy_data |= BME1000_PSCR_ENABLE_DOWNSHIFT; |
| 721 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 722 | ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data); |
| 723 | if (ret_val) |
| 724 | return ret_val; |
| 725 | |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 726 | if ((phy->type == e1000_phy_m88) && |
| 727 | (phy->revision < E1000_REVISION_4) && |
| 728 | (phy->id != BME1000_E_PHY_ID_R2)) { |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 729 | /* |
| 730 | * Force TX_CLK in the Extended PHY Specific Control Register |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 731 | * to 25MHz clock. |
| 732 | */ |
| 733 | ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); |
| 734 | if (ret_val) |
| 735 | return ret_val; |
| 736 | |
| 737 | phy_data |= M88E1000_EPSCR_TX_CLK_25; |
| 738 | |
| 739 | if ((phy->revision == 2) && |
| 740 | (phy->id == M88E1111_I_PHY_ID)) { |
| 741 | /* 82573L PHY - set the downshift counter to 5x. */ |
| 742 | phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK; |
| 743 | phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X; |
| 744 | } else { |
| 745 | /* Configure Master and Slave downshift values */ |
| 746 | phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | |
| 747 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); |
| 748 | phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | |
| 749 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); |
| 750 | } |
| 751 | ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); |
| 752 | if (ret_val) |
| 753 | return ret_val; |
| 754 | } |
| 755 | |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 756 | if ((phy->type == e1000_phy_bm) && (phy->id == BME1000_E_PHY_ID_R2)) { |
| 757 | /* Set PHY page 0, register 29 to 0x0003 */ |
| 758 | ret_val = e1e_wphy(hw, 29, 0x0003); |
| 759 | if (ret_val) |
| 760 | return ret_val; |
| 761 | |
| 762 | /* Set PHY page 0, register 30 to 0x0000 */ |
| 763 | ret_val = e1e_wphy(hw, 30, 0x0000); |
| 764 | if (ret_val) |
| 765 | return ret_val; |
| 766 | } |
| 767 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 768 | /* Commit the changes. */ |
| 769 | ret_val = e1000e_commit_phy(hw); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 770 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 771 | e_dbg("Error committing the PHY changes\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 772 | return ret_val; |
| 773 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 774 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 775 | if (phy->type == e1000_phy_82578) { |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 776 | ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 777 | if (ret_val) |
| 778 | return ret_val; |
| 779 | |
| 780 | /* 82578 PHY - set the downshift count to 1x. */ |
| 781 | phy_data |= I82578_EPSCR_DOWNSHIFT_ENABLE; |
| 782 | phy_data &= ~I82578_EPSCR_DOWNSHIFT_COUNTER_MASK; |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 783 | ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 784 | if (ret_val) |
| 785 | return ret_val; |
| 786 | } |
| 787 | |
| 788 | return 0; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | /** |
| 792 | * e1000e_copper_link_setup_igp - Setup igp PHY's for copper link |
| 793 | * @hw: pointer to the HW structure |
| 794 | * |
| 795 | * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for |
| 796 | * igp PHY's. |
| 797 | **/ |
| 798 | s32 e1000e_copper_link_setup_igp(struct e1000_hw *hw) |
| 799 | { |
| 800 | struct e1000_phy_info *phy = &hw->phy; |
| 801 | s32 ret_val; |
| 802 | u16 data; |
| 803 | |
| 804 | ret_val = e1000_phy_hw_reset(hw); |
| 805 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 806 | e_dbg("Error resetting the PHY.\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 807 | return ret_val; |
| 808 | } |
| 809 | |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 810 | /* |
| 811 | * Wait 100ms for MAC to configure PHY from NVM settings, to avoid |
| 812 | * timeout issues when LFS is enabled. |
| 813 | */ |
| 814 | msleep(100); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 815 | |
| 816 | /* disable lplu d0 during driver init */ |
Bruce Allan | 564ea9b | 2009-11-20 23:26:44 +0000 | [diff] [blame] | 817 | ret_val = e1000_set_d0_lplu_state(hw, false); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 818 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 819 | e_dbg("Error Disabling LPLU D0\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 820 | return ret_val; |
| 821 | } |
| 822 | /* Configure mdi-mdix settings */ |
| 823 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &data); |
| 824 | if (ret_val) |
| 825 | return ret_val; |
| 826 | |
| 827 | data &= ~IGP01E1000_PSCR_AUTO_MDIX; |
| 828 | |
| 829 | switch (phy->mdix) { |
| 830 | case 1: |
| 831 | data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; |
| 832 | break; |
| 833 | case 2: |
| 834 | data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; |
| 835 | break; |
| 836 | case 0: |
| 837 | default: |
| 838 | data |= IGP01E1000_PSCR_AUTO_MDIX; |
| 839 | break; |
| 840 | } |
| 841 | ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, data); |
| 842 | if (ret_val) |
| 843 | return ret_val; |
| 844 | |
| 845 | /* set auto-master slave resolution settings */ |
| 846 | if (hw->mac.autoneg) { |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 847 | /* |
| 848 | * when autonegotiation advertisement is only 1000Mbps then we |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 849 | * should disable SmartSpeed and enable Auto MasterSlave |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 850 | * resolution as hardware default. |
| 851 | */ |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 852 | if (phy->autoneg_advertised == ADVERTISE_1000_FULL) { |
| 853 | /* Disable SmartSpeed */ |
| 854 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 855 | &data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 856 | if (ret_val) |
| 857 | return ret_val; |
| 858 | |
| 859 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
| 860 | ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 861 | data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 862 | if (ret_val) |
| 863 | return ret_val; |
| 864 | |
| 865 | /* Set auto Master/Slave resolution process */ |
| 866 | ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data); |
| 867 | if (ret_val) |
| 868 | return ret_val; |
| 869 | |
| 870 | data &= ~CR_1000T_MS_ENABLE; |
| 871 | ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data); |
| 872 | if (ret_val) |
| 873 | return ret_val; |
| 874 | } |
| 875 | |
| 876 | ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data); |
| 877 | if (ret_val) |
| 878 | return ret_val; |
| 879 | |
| 880 | /* load defaults for future use */ |
| 881 | phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ? |
| 882 | ((data & CR_1000T_MS_VALUE) ? |
| 883 | e1000_ms_force_master : |
| 884 | e1000_ms_force_slave) : |
| 885 | e1000_ms_auto; |
| 886 | |
| 887 | switch (phy->ms_type) { |
| 888 | case e1000_ms_force_master: |
| 889 | data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); |
| 890 | break; |
| 891 | case e1000_ms_force_slave: |
| 892 | data |= CR_1000T_MS_ENABLE; |
| 893 | data &= ~(CR_1000T_MS_VALUE); |
| 894 | break; |
| 895 | case e1000_ms_auto: |
| 896 | data &= ~CR_1000T_MS_ENABLE; |
| 897 | default: |
| 898 | break; |
| 899 | } |
| 900 | ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data); |
| 901 | } |
| 902 | |
| 903 | return ret_val; |
| 904 | } |
| 905 | |
| 906 | /** |
| 907 | * e1000_phy_setup_autoneg - Configure PHY for auto-negotiation |
| 908 | * @hw: pointer to the HW structure |
| 909 | * |
| 910 | * Reads the MII auto-neg advertisement register and/or the 1000T control |
| 911 | * register and if the PHY is already setup for auto-negotiation, then |
| 912 | * return successful. Otherwise, setup advertisement and flow control to |
| 913 | * the appropriate values for the wanted auto-negotiation. |
| 914 | **/ |
| 915 | static s32 e1000_phy_setup_autoneg(struct e1000_hw *hw) |
| 916 | { |
| 917 | struct e1000_phy_info *phy = &hw->phy; |
| 918 | s32 ret_val; |
| 919 | u16 mii_autoneg_adv_reg; |
| 920 | u16 mii_1000t_ctrl_reg = 0; |
| 921 | |
| 922 | phy->autoneg_advertised &= phy->autoneg_mask; |
| 923 | |
| 924 | /* Read the MII Auto-Neg Advertisement Register (Address 4). */ |
| 925 | ret_val = e1e_rphy(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); |
| 926 | if (ret_val) |
| 927 | return ret_val; |
| 928 | |
| 929 | if (phy->autoneg_mask & ADVERTISE_1000_FULL) { |
| 930 | /* Read the MII 1000Base-T Control Register (Address 9). */ |
| 931 | ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg); |
| 932 | if (ret_val) |
| 933 | return ret_val; |
| 934 | } |
| 935 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 936 | /* |
| 937 | * Need to parse both autoneg_advertised and fc and set up |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 938 | * the appropriate PHY registers. First we will parse for |
| 939 | * autoneg_advertised software override. Since we can advertise |
| 940 | * a plethora of combinations, we need to check each bit |
| 941 | * individually. |
| 942 | */ |
| 943 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 944 | /* |
| 945 | * First we clear all the 10/100 mb speed bits in the Auto-Neg |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 946 | * Advertisement Register (Address 4) and the 1000 mb speed bits in |
| 947 | * the 1000Base-T Control Register (Address 9). |
| 948 | */ |
| 949 | mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS | |
| 950 | NWAY_AR_100TX_HD_CAPS | |
| 951 | NWAY_AR_10T_FD_CAPS | |
| 952 | NWAY_AR_10T_HD_CAPS); |
| 953 | mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS); |
| 954 | |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 955 | e_dbg("autoneg_advertised %x\n", phy->autoneg_advertised); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 956 | |
| 957 | /* Do we want to advertise 10 Mb Half Duplex? */ |
| 958 | if (phy->autoneg_advertised & ADVERTISE_10_HALF) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 959 | e_dbg("Advertise 10mb Half duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 960 | mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; |
| 961 | } |
| 962 | |
| 963 | /* Do we want to advertise 10 Mb Full Duplex? */ |
| 964 | if (phy->autoneg_advertised & ADVERTISE_10_FULL) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 965 | e_dbg("Advertise 10mb Full duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 966 | mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; |
| 967 | } |
| 968 | |
| 969 | /* Do we want to advertise 100 Mb Half Duplex? */ |
| 970 | if (phy->autoneg_advertised & ADVERTISE_100_HALF) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 971 | e_dbg("Advertise 100mb Half duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 972 | mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; |
| 973 | } |
| 974 | |
| 975 | /* Do we want to advertise 100 Mb Full Duplex? */ |
| 976 | if (phy->autoneg_advertised & ADVERTISE_100_FULL) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 977 | e_dbg("Advertise 100mb Full duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 978 | mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; |
| 979 | } |
| 980 | |
| 981 | /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ |
| 982 | if (phy->autoneg_advertised & ADVERTISE_1000_HALF) |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 983 | e_dbg("Advertise 1000mb Half duplex request denied!\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 984 | |
| 985 | /* Do we want to advertise 1000 Mb Full Duplex? */ |
| 986 | if (phy->autoneg_advertised & ADVERTISE_1000_FULL) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 987 | e_dbg("Advertise 1000mb Full duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 988 | mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; |
| 989 | } |
| 990 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 991 | /* |
| 992 | * Check for a software override of the flow control settings, and |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 993 | * setup the PHY advertisement registers accordingly. If |
| 994 | * auto-negotiation is enabled, then software will have to set the |
| 995 | * "PAUSE" bits to the correct value in the Auto-Negotiation |
| 996 | * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto- |
| 997 | * negotiation. |
| 998 | * |
| 999 | * The possible values of the "fc" parameter are: |
| 1000 | * 0: Flow control is completely disabled |
| 1001 | * 1: Rx flow control is enabled (we can receive pause frames |
| 1002 | * but not send pause frames). |
| 1003 | * 2: Tx flow control is enabled (we can send pause frames |
| 1004 | * but we do not support receiving pause frames). |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1005 | * 3: Both Rx and Tx flow control (symmetric) are enabled. |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1006 | * other: No software override. The flow control configuration |
| 1007 | * in the EEPROM is used. |
| 1008 | */ |
Bruce Allan | 5c48ef3e2 | 2008-11-21 16:57:36 -0800 | [diff] [blame] | 1009 | switch (hw->fc.current_mode) { |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1010 | case e1000_fc_none: |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1011 | /* |
| 1012 | * Flow control (Rx & Tx) is completely disabled by a |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1013 | * software over-ride. |
| 1014 | */ |
| 1015 | mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); |
| 1016 | break; |
| 1017 | case e1000_fc_rx_pause: |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1018 | /* |
| 1019 | * Rx Flow control is enabled, and Tx Flow control is |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1020 | * disabled, by a software over-ride. |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1021 | * |
| 1022 | * Since there really isn't a way to advertise that we are |
| 1023 | * capable of Rx Pause ONLY, we will advertise that we |
| 1024 | * support both symmetric and asymmetric Rx PAUSE. Later |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1025 | * (in e1000e_config_fc_after_link_up) we will disable the |
| 1026 | * hw's ability to send PAUSE frames. |
| 1027 | */ |
| 1028 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); |
| 1029 | break; |
| 1030 | case e1000_fc_tx_pause: |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1031 | /* |
| 1032 | * Tx Flow control is enabled, and Rx Flow control is |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1033 | * disabled, by a software over-ride. |
| 1034 | */ |
| 1035 | mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; |
| 1036 | mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; |
| 1037 | break; |
| 1038 | case e1000_fc_full: |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1039 | /* |
| 1040 | * Flow control (both Rx and Tx) is enabled by a software |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1041 | * over-ride. |
| 1042 | */ |
| 1043 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); |
| 1044 | break; |
| 1045 | default: |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1046 | e_dbg("Flow control param set incorrectly\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1047 | ret_val = -E1000_ERR_CONFIG; |
| 1048 | return ret_val; |
| 1049 | } |
| 1050 | |
| 1051 | ret_val = e1e_wphy(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); |
| 1052 | if (ret_val) |
| 1053 | return ret_val; |
| 1054 | |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1055 | e_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1056 | |
Bruce Allan | b1cdfea | 2010-12-11 05:53:47 +0000 | [diff] [blame] | 1057 | if (phy->autoneg_mask & ADVERTISE_1000_FULL) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1058 | ret_val = e1e_wphy(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1059 | |
| 1060 | return ret_val; |
| 1061 | } |
| 1062 | |
| 1063 | /** |
| 1064 | * e1000_copper_link_autoneg - Setup/Enable autoneg for copper link |
| 1065 | * @hw: pointer to the HW structure |
| 1066 | * |
| 1067 | * Performs initial bounds checking on autoneg advertisement parameter, then |
| 1068 | * configure to advertise the full capability. Setup the PHY to autoneg |
| 1069 | * and restart the negotiation process between the link partner. If |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1070 | * autoneg_wait_to_complete, then wait for autoneg to complete before exiting. |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1071 | **/ |
| 1072 | static s32 e1000_copper_link_autoneg(struct e1000_hw *hw) |
| 1073 | { |
| 1074 | struct e1000_phy_info *phy = &hw->phy; |
| 1075 | s32 ret_val; |
| 1076 | u16 phy_ctrl; |
| 1077 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1078 | /* |
| 1079 | * Perform some bounds checking on the autoneg advertisement |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1080 | * parameter. |
| 1081 | */ |
| 1082 | phy->autoneg_advertised &= phy->autoneg_mask; |
| 1083 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1084 | /* |
| 1085 | * If autoneg_advertised is zero, we assume it was not defaulted |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1086 | * by the calling code so we set to advertise full capability. |
| 1087 | */ |
| 1088 | if (phy->autoneg_advertised == 0) |
| 1089 | phy->autoneg_advertised = phy->autoneg_mask; |
| 1090 | |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1091 | e_dbg("Reconfiguring auto-neg advertisement params\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1092 | ret_val = e1000_phy_setup_autoneg(hw); |
| 1093 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1094 | e_dbg("Error Setting up Auto-Negotiation\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1095 | return ret_val; |
| 1096 | } |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1097 | e_dbg("Restarting Auto-Neg\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1098 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1099 | /* |
| 1100 | * Restart auto-negotiation by setting the Auto Neg Enable bit and |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1101 | * the Auto Neg Restart bit in the PHY control register. |
| 1102 | */ |
| 1103 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl); |
| 1104 | if (ret_val) |
| 1105 | return ret_val; |
| 1106 | |
| 1107 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); |
| 1108 | ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl); |
| 1109 | if (ret_val) |
| 1110 | return ret_val; |
| 1111 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1112 | /* |
| 1113 | * Does the user want to wait for Auto-Neg to complete here, or |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1114 | * check at a later time (for example, callback routine). |
| 1115 | */ |
Jeff Kirsher | 318a94d | 2008-03-28 09:15:16 -0700 | [diff] [blame] | 1116 | if (phy->autoneg_wait_to_complete) { |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1117 | ret_val = e1000_wait_autoneg(hw); |
| 1118 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1119 | e_dbg("Error while waiting for " |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1120 | "autoneg to complete\n"); |
| 1121 | return ret_val; |
| 1122 | } |
| 1123 | } |
| 1124 | |
| 1125 | hw->mac.get_link_status = 1; |
| 1126 | |
| 1127 | return ret_val; |
| 1128 | } |
| 1129 | |
| 1130 | /** |
| 1131 | * e1000e_setup_copper_link - Configure copper link settings |
| 1132 | * @hw: pointer to the HW structure |
| 1133 | * |
| 1134 | * Calls the appropriate function to configure the link for auto-neg or forced |
| 1135 | * speed and duplex. Then we check for link, once link is established calls |
| 1136 | * to configure collision distance and flow control are called. If link is |
| 1137 | * not established, we return -E1000_ERR_PHY (-2). |
| 1138 | **/ |
| 1139 | s32 e1000e_setup_copper_link(struct e1000_hw *hw) |
| 1140 | { |
| 1141 | s32 ret_val; |
| 1142 | bool link; |
| 1143 | |
| 1144 | if (hw->mac.autoneg) { |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1145 | /* |
| 1146 | * Setup autoneg and flow control advertisement and perform |
| 1147 | * autonegotiation. |
| 1148 | */ |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1149 | ret_val = e1000_copper_link_autoneg(hw); |
| 1150 | if (ret_val) |
| 1151 | return ret_val; |
| 1152 | } else { |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1153 | /* |
| 1154 | * PHY will be set to 10H, 10F, 100H or 100F |
| 1155 | * depending on user settings. |
| 1156 | */ |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1157 | e_dbg("Forcing Speed and Duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1158 | ret_val = e1000_phy_force_speed_duplex(hw); |
| 1159 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1160 | e_dbg("Error Forcing Speed and Duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1161 | return ret_val; |
| 1162 | } |
| 1163 | } |
| 1164 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1165 | /* |
| 1166 | * Check link status. Wait up to 100 microseconds for link to become |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1167 | * valid. |
| 1168 | */ |
| 1169 | ret_val = e1000e_phy_has_link_generic(hw, |
| 1170 | COPPER_LINK_UP_LIMIT, |
| 1171 | 10, |
| 1172 | &link); |
| 1173 | if (ret_val) |
| 1174 | return ret_val; |
| 1175 | |
| 1176 | if (link) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1177 | e_dbg("Valid link established!!!\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1178 | e1000e_config_collision_dist(hw); |
| 1179 | ret_val = e1000e_config_fc_after_link_up(hw); |
| 1180 | } else { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1181 | e_dbg("Unable to establish link!!!\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1182 | } |
| 1183 | |
| 1184 | return ret_val; |
| 1185 | } |
| 1186 | |
| 1187 | /** |
| 1188 | * e1000e_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY |
| 1189 | * @hw: pointer to the HW structure |
| 1190 | * |
| 1191 | * Calls the PHY setup function to force speed and duplex. Clears the |
| 1192 | * auto-crossover to force MDI manually. Waits for link and returns |
| 1193 | * successful if link up is successful, else -E1000_ERR_PHY (-2). |
| 1194 | **/ |
| 1195 | s32 e1000e_phy_force_speed_duplex_igp(struct e1000_hw *hw) |
| 1196 | { |
| 1197 | struct e1000_phy_info *phy = &hw->phy; |
| 1198 | s32 ret_val; |
| 1199 | u16 phy_data; |
| 1200 | bool link; |
| 1201 | |
| 1202 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data); |
| 1203 | if (ret_val) |
| 1204 | return ret_val; |
| 1205 | |
| 1206 | e1000e_phy_force_speed_duplex_setup(hw, &phy_data); |
| 1207 | |
| 1208 | ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data); |
| 1209 | if (ret_val) |
| 1210 | return ret_val; |
| 1211 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1212 | /* |
| 1213 | * Clear Auto-Crossover to force MDI manually. IGP requires MDI |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1214 | * forced whenever speed and duplex are forced. |
| 1215 | */ |
| 1216 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); |
| 1217 | if (ret_val) |
| 1218 | return ret_val; |
| 1219 | |
| 1220 | phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; |
| 1221 | phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; |
| 1222 | |
| 1223 | ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); |
| 1224 | if (ret_val) |
| 1225 | return ret_val; |
| 1226 | |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1227 | e_dbg("IGP PSCR: %X\n", phy_data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1228 | |
| 1229 | udelay(1); |
| 1230 | |
Jeff Kirsher | 318a94d | 2008-03-28 09:15:16 -0700 | [diff] [blame] | 1231 | if (phy->autoneg_wait_to_complete) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1232 | e_dbg("Waiting for forced speed/duplex link on IGP phy.\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1233 | |
| 1234 | ret_val = e1000e_phy_has_link_generic(hw, |
| 1235 | PHY_FORCE_LIMIT, |
| 1236 | 100000, |
| 1237 | &link); |
| 1238 | if (ret_val) |
| 1239 | return ret_val; |
| 1240 | |
| 1241 | if (!link) |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1242 | e_dbg("Link taking longer than expected.\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1243 | |
| 1244 | /* Try once more */ |
| 1245 | ret_val = e1000e_phy_has_link_generic(hw, |
| 1246 | PHY_FORCE_LIMIT, |
| 1247 | 100000, |
| 1248 | &link); |
| 1249 | if (ret_val) |
| 1250 | return ret_val; |
| 1251 | } |
| 1252 | |
| 1253 | return ret_val; |
| 1254 | } |
| 1255 | |
| 1256 | /** |
| 1257 | * e1000e_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY |
| 1258 | * @hw: pointer to the HW structure |
| 1259 | * |
| 1260 | * Calls the PHY setup function to force speed and duplex. Clears the |
| 1261 | * auto-crossover to force MDI manually. Resets the PHY to commit the |
| 1262 | * changes. If time expires while waiting for link up, we reset the DSP. |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1263 | * After reset, TX_CLK and CRS on Tx must be set. Return successful upon |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1264 | * successful completion, else return corresponding error code. |
| 1265 | **/ |
| 1266 | s32 e1000e_phy_force_speed_duplex_m88(struct e1000_hw *hw) |
| 1267 | { |
| 1268 | struct e1000_phy_info *phy = &hw->phy; |
| 1269 | s32 ret_val; |
| 1270 | u16 phy_data; |
| 1271 | bool link; |
| 1272 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1273 | /* |
| 1274 | * Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1275 | * forced whenever speed and duplex are forced. |
| 1276 | */ |
| 1277 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
| 1278 | if (ret_val) |
| 1279 | return ret_val; |
| 1280 | |
| 1281 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; |
| 1282 | ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data); |
| 1283 | if (ret_val) |
| 1284 | return ret_val; |
| 1285 | |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1286 | e_dbg("M88E1000 PSCR: %X\n", phy_data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1287 | |
| 1288 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data); |
| 1289 | if (ret_val) |
| 1290 | return ret_val; |
| 1291 | |
| 1292 | e1000e_phy_force_speed_duplex_setup(hw, &phy_data); |
| 1293 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1294 | ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data); |
| 1295 | if (ret_val) |
| 1296 | return ret_val; |
| 1297 | |
Bruce Allan | 5aa49c8 | 2008-11-21 16:49:53 -0800 | [diff] [blame] | 1298 | /* Reset the phy to commit changes. */ |
| 1299 | ret_val = e1000e_commit_phy(hw); |
| 1300 | if (ret_val) |
| 1301 | return ret_val; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1302 | |
Jeff Kirsher | 318a94d | 2008-03-28 09:15:16 -0700 | [diff] [blame] | 1303 | if (phy->autoneg_wait_to_complete) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1304 | e_dbg("Waiting for forced speed/duplex link on M88 phy.\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1305 | |
| 1306 | ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT, |
| 1307 | 100000, &link); |
| 1308 | if (ret_val) |
| 1309 | return ret_val; |
| 1310 | |
| 1311 | if (!link) { |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1312 | if (hw->phy.type != e1000_phy_m88) { |
| 1313 | e_dbg("Link taking longer than expected.\n"); |
| 1314 | } else { |
| 1315 | /* |
| 1316 | * We didn't get link. |
| 1317 | * Reset the DSP and cross our fingers. |
| 1318 | */ |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 1319 | ret_val = e1e_wphy(hw, M88E1000_PHY_PAGE_SELECT, |
| 1320 | 0x001d); |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1321 | if (ret_val) |
| 1322 | return ret_val; |
| 1323 | ret_val = e1000e_phy_reset_dsp(hw); |
| 1324 | if (ret_val) |
| 1325 | return ret_val; |
| 1326 | } |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1327 | } |
| 1328 | |
| 1329 | /* Try once more */ |
| 1330 | ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT, |
| 1331 | 100000, &link); |
| 1332 | if (ret_val) |
| 1333 | return ret_val; |
| 1334 | } |
| 1335 | |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1336 | if (hw->phy.type != e1000_phy_m88) |
| 1337 | return 0; |
| 1338 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1339 | ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); |
| 1340 | if (ret_val) |
| 1341 | return ret_val; |
| 1342 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1343 | /* |
| 1344 | * Resetting the phy means we need to re-force TX_CLK in the |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1345 | * Extended PHY Specific Control Register to 25MHz clock from |
| 1346 | * the reset value of 2.5MHz. |
| 1347 | */ |
| 1348 | phy_data |= M88E1000_EPSCR_TX_CLK_25; |
| 1349 | ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); |
| 1350 | if (ret_val) |
| 1351 | return ret_val; |
| 1352 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1353 | /* |
| 1354 | * In addition, we must re-enable CRS on Tx for both half and full |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1355 | * duplex. |
| 1356 | */ |
| 1357 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
| 1358 | if (ret_val) |
| 1359 | return ret_val; |
| 1360 | |
| 1361 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; |
| 1362 | ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data); |
| 1363 | |
| 1364 | return ret_val; |
| 1365 | } |
| 1366 | |
| 1367 | /** |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1368 | * e1000_phy_force_speed_duplex_ife - Force PHY speed & duplex |
| 1369 | * @hw: pointer to the HW structure |
| 1370 | * |
| 1371 | * Forces the speed and duplex settings of the PHY. |
| 1372 | * This is a function pointer entry point only called by |
| 1373 | * PHY setup routines. |
| 1374 | **/ |
| 1375 | s32 e1000_phy_force_speed_duplex_ife(struct e1000_hw *hw) |
| 1376 | { |
| 1377 | struct e1000_phy_info *phy = &hw->phy; |
| 1378 | s32 ret_val; |
| 1379 | u16 data; |
| 1380 | bool link; |
| 1381 | |
| 1382 | ret_val = e1e_rphy(hw, PHY_CONTROL, &data); |
| 1383 | if (ret_val) |
| 1384 | goto out; |
| 1385 | |
| 1386 | e1000e_phy_force_speed_duplex_setup(hw, &data); |
| 1387 | |
| 1388 | ret_val = e1e_wphy(hw, PHY_CONTROL, data); |
| 1389 | if (ret_val) |
| 1390 | goto out; |
| 1391 | |
| 1392 | /* Disable MDI-X support for 10/100 */ |
| 1393 | ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &data); |
| 1394 | if (ret_val) |
| 1395 | goto out; |
| 1396 | |
| 1397 | data &= ~IFE_PMC_AUTO_MDIX; |
| 1398 | data &= ~IFE_PMC_FORCE_MDIX; |
| 1399 | |
| 1400 | ret_val = e1e_wphy(hw, IFE_PHY_MDIX_CONTROL, data); |
| 1401 | if (ret_val) |
| 1402 | goto out; |
| 1403 | |
| 1404 | e_dbg("IFE PMC: %X\n", data); |
| 1405 | |
| 1406 | udelay(1); |
| 1407 | |
| 1408 | if (phy->autoneg_wait_to_complete) { |
| 1409 | e_dbg("Waiting for forced speed/duplex link on IFE phy.\n"); |
| 1410 | |
| 1411 | ret_val = e1000e_phy_has_link_generic(hw, |
| 1412 | PHY_FORCE_LIMIT, |
| 1413 | 100000, |
| 1414 | &link); |
| 1415 | if (ret_val) |
| 1416 | goto out; |
| 1417 | |
| 1418 | if (!link) |
| 1419 | e_dbg("Link taking longer than expected.\n"); |
| 1420 | |
| 1421 | /* Try once more */ |
| 1422 | ret_val = e1000e_phy_has_link_generic(hw, |
| 1423 | PHY_FORCE_LIMIT, |
| 1424 | 100000, |
| 1425 | &link); |
| 1426 | if (ret_val) |
| 1427 | goto out; |
| 1428 | } |
| 1429 | |
| 1430 | out: |
| 1431 | return ret_val; |
| 1432 | } |
| 1433 | |
| 1434 | /** |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1435 | * e1000e_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex |
| 1436 | * @hw: pointer to the HW structure |
| 1437 | * @phy_ctrl: pointer to current value of PHY_CONTROL |
| 1438 | * |
| 1439 | * Forces speed and duplex on the PHY by doing the following: disable flow |
| 1440 | * control, force speed/duplex on the MAC, disable auto speed detection, |
| 1441 | * disable auto-negotiation, configure duplex, configure speed, configure |
| 1442 | * the collision distance, write configuration to CTRL register. The |
| 1443 | * caller must write to the PHY_CONTROL register for these settings to |
| 1444 | * take affect. |
| 1445 | **/ |
| 1446 | void e1000e_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl) |
| 1447 | { |
| 1448 | struct e1000_mac_info *mac = &hw->mac; |
| 1449 | u32 ctrl; |
| 1450 | |
| 1451 | /* Turn off flow control when forcing speed/duplex */ |
Bruce Allan | 5c48ef3e2 | 2008-11-21 16:57:36 -0800 | [diff] [blame] | 1452 | hw->fc.current_mode = e1000_fc_none; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1453 | |
| 1454 | /* Force speed/duplex on the mac */ |
| 1455 | ctrl = er32(CTRL); |
| 1456 | ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); |
| 1457 | ctrl &= ~E1000_CTRL_SPD_SEL; |
| 1458 | |
| 1459 | /* Disable Auto Speed Detection */ |
| 1460 | ctrl &= ~E1000_CTRL_ASDE; |
| 1461 | |
| 1462 | /* Disable autoneg on the phy */ |
| 1463 | *phy_ctrl &= ~MII_CR_AUTO_NEG_EN; |
| 1464 | |
| 1465 | /* Forcing Full or Half Duplex? */ |
| 1466 | if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) { |
| 1467 | ctrl &= ~E1000_CTRL_FD; |
| 1468 | *phy_ctrl &= ~MII_CR_FULL_DUPLEX; |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1469 | e_dbg("Half Duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1470 | } else { |
| 1471 | ctrl |= E1000_CTRL_FD; |
| 1472 | *phy_ctrl |= MII_CR_FULL_DUPLEX; |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1473 | e_dbg("Full Duplex\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | /* Forcing 10mb or 100mb? */ |
| 1477 | if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) { |
| 1478 | ctrl |= E1000_CTRL_SPD_100; |
| 1479 | *phy_ctrl |= MII_CR_SPEED_100; |
| 1480 | *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10); |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1481 | e_dbg("Forcing 100mb\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1482 | } else { |
| 1483 | ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100); |
| 1484 | *phy_ctrl |= MII_CR_SPEED_10; |
| 1485 | *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100); |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1486 | e_dbg("Forcing 10mb\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1487 | } |
| 1488 | |
| 1489 | e1000e_config_collision_dist(hw); |
| 1490 | |
| 1491 | ew32(CTRL, ctrl); |
| 1492 | } |
| 1493 | |
| 1494 | /** |
| 1495 | * e1000e_set_d3_lplu_state - Sets low power link up state for D3 |
| 1496 | * @hw: pointer to the HW structure |
| 1497 | * @active: boolean used to enable/disable lplu |
| 1498 | * |
| 1499 | * Success returns 0, Failure returns 1 |
| 1500 | * |
| 1501 | * The low power link up (lplu) state is set to the power management level D3 |
| 1502 | * and SmartSpeed is disabled when active is true, else clear lplu for D3 |
| 1503 | * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU |
| 1504 | * is used during Dx states where the power conservation is most important. |
| 1505 | * During driver activity, SmartSpeed should be enabled so performance is |
| 1506 | * maintained. |
| 1507 | **/ |
| 1508 | s32 e1000e_set_d3_lplu_state(struct e1000_hw *hw, bool active) |
| 1509 | { |
| 1510 | struct e1000_phy_info *phy = &hw->phy; |
| 1511 | s32 ret_val; |
| 1512 | u16 data; |
| 1513 | |
| 1514 | ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data); |
| 1515 | if (ret_val) |
| 1516 | return ret_val; |
| 1517 | |
| 1518 | if (!active) { |
| 1519 | data &= ~IGP02E1000_PM_D3_LPLU; |
David Graham | 2d9498f | 2008-04-23 11:09:14 -0700 | [diff] [blame] | 1520 | ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1521 | if (ret_val) |
| 1522 | return ret_val; |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1523 | /* |
| 1524 | * LPLU and SmartSpeed are mutually exclusive. LPLU is used |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1525 | * during Dx states where the power conservation is most |
| 1526 | * important. During driver activity we should enable |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1527 | * SmartSpeed, so performance is maintained. |
| 1528 | */ |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1529 | if (phy->smart_speed == e1000_smart_speed_on) { |
| 1530 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1531 | &data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1532 | if (ret_val) |
| 1533 | return ret_val; |
| 1534 | |
| 1535 | data |= IGP01E1000_PSCFR_SMART_SPEED; |
| 1536 | ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1537 | data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1538 | if (ret_val) |
| 1539 | return ret_val; |
| 1540 | } else if (phy->smart_speed == e1000_smart_speed_off) { |
| 1541 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1542 | &data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1543 | if (ret_val) |
| 1544 | return ret_val; |
| 1545 | |
| 1546 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
| 1547 | ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1548 | data); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1549 | if (ret_val) |
| 1550 | return ret_val; |
| 1551 | } |
| 1552 | } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || |
| 1553 | (phy->autoneg_advertised == E1000_ALL_NOT_GIG) || |
| 1554 | (phy->autoneg_advertised == E1000_ALL_10_SPEED)) { |
| 1555 | data |= IGP02E1000_PM_D3_LPLU; |
| 1556 | ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data); |
| 1557 | if (ret_val) |
| 1558 | return ret_val; |
| 1559 | |
| 1560 | /* When LPLU is enabled, we should disable SmartSpeed */ |
| 1561 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data); |
| 1562 | if (ret_val) |
| 1563 | return ret_val; |
| 1564 | |
| 1565 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
| 1566 | ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data); |
| 1567 | } |
| 1568 | |
| 1569 | return ret_val; |
| 1570 | } |
| 1571 | |
| 1572 | /** |
Auke Kok | 489815c | 2008-02-21 15:11:07 -0800 | [diff] [blame] | 1573 | * e1000e_check_downshift - Checks whether a downshift in speed occurred |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1574 | * @hw: pointer to the HW structure |
| 1575 | * |
| 1576 | * Success returns 0, Failure returns 1 |
| 1577 | * |
| 1578 | * A downshift is detected by querying the PHY link health. |
| 1579 | **/ |
| 1580 | s32 e1000e_check_downshift(struct e1000_hw *hw) |
| 1581 | { |
| 1582 | struct e1000_phy_info *phy = &hw->phy; |
| 1583 | s32 ret_val; |
| 1584 | u16 phy_data, offset, mask; |
| 1585 | |
| 1586 | switch (phy->type) { |
| 1587 | case e1000_phy_m88: |
| 1588 | case e1000_phy_gg82563: |
Bruce Allan | 07f025e | 2009-12-01 15:53:48 +0000 | [diff] [blame] | 1589 | case e1000_phy_bm: |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 1590 | case e1000_phy_82578: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1591 | offset = M88E1000_PHY_SPEC_STATUS; |
| 1592 | mask = M88E1000_PSSR_DOWNSHIFT; |
| 1593 | break; |
| 1594 | case e1000_phy_igp_2: |
| 1595 | case e1000_phy_igp_3: |
| 1596 | offset = IGP01E1000_PHY_LINK_HEALTH; |
| 1597 | mask = IGP01E1000_PLHR_SS_DOWNGRADE; |
| 1598 | break; |
| 1599 | default: |
| 1600 | /* speed downshift not supported */ |
Bruce Allan | 564ea9b | 2009-11-20 23:26:44 +0000 | [diff] [blame] | 1601 | phy->speed_downgraded = false; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1602 | return 0; |
| 1603 | } |
| 1604 | |
| 1605 | ret_val = e1e_rphy(hw, offset, &phy_data); |
| 1606 | |
| 1607 | if (!ret_val) |
| 1608 | phy->speed_downgraded = (phy_data & mask); |
| 1609 | |
| 1610 | return ret_val; |
| 1611 | } |
| 1612 | |
| 1613 | /** |
| 1614 | * e1000_check_polarity_m88 - Checks the polarity. |
| 1615 | * @hw: pointer to the HW structure |
| 1616 | * |
| 1617 | * Success returns 0, Failure returns -E1000_ERR_PHY (-2) |
| 1618 | * |
| 1619 | * Polarity is determined based on the PHY specific status register. |
| 1620 | **/ |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1621 | s32 e1000_check_polarity_m88(struct e1000_hw *hw) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1622 | { |
| 1623 | struct e1000_phy_info *phy = &hw->phy; |
| 1624 | s32 ret_val; |
| 1625 | u16 data; |
| 1626 | |
| 1627 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &data); |
| 1628 | |
| 1629 | if (!ret_val) |
| 1630 | phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY) |
| 1631 | ? e1000_rev_polarity_reversed |
| 1632 | : e1000_rev_polarity_normal; |
| 1633 | |
| 1634 | return ret_val; |
| 1635 | } |
| 1636 | |
| 1637 | /** |
| 1638 | * e1000_check_polarity_igp - Checks the polarity. |
| 1639 | * @hw: pointer to the HW structure |
| 1640 | * |
| 1641 | * Success returns 0, Failure returns -E1000_ERR_PHY (-2) |
| 1642 | * |
| 1643 | * Polarity is determined based on the PHY port status register, and the |
| 1644 | * current speed (since there is no polarity at 100Mbps). |
| 1645 | **/ |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1646 | s32 e1000_check_polarity_igp(struct e1000_hw *hw) |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1647 | { |
| 1648 | struct e1000_phy_info *phy = &hw->phy; |
| 1649 | s32 ret_val; |
| 1650 | u16 data, offset, mask; |
| 1651 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1652 | /* |
| 1653 | * Polarity is determined based on the speed of |
| 1654 | * our connection. |
| 1655 | */ |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1656 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data); |
| 1657 | if (ret_val) |
| 1658 | return ret_val; |
| 1659 | |
| 1660 | if ((data & IGP01E1000_PSSR_SPEED_MASK) == |
| 1661 | IGP01E1000_PSSR_SPEED_1000MBPS) { |
| 1662 | offset = IGP01E1000_PHY_PCS_INIT_REG; |
| 1663 | mask = IGP01E1000_PHY_POLARITY_MASK; |
| 1664 | } else { |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1665 | /* |
| 1666 | * This really only applies to 10Mbps since |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1667 | * there is no polarity for 100Mbps (always 0). |
| 1668 | */ |
| 1669 | offset = IGP01E1000_PHY_PORT_STATUS; |
| 1670 | mask = IGP01E1000_PSSR_POLARITY_REVERSED; |
| 1671 | } |
| 1672 | |
| 1673 | ret_val = e1e_rphy(hw, offset, &data); |
| 1674 | |
| 1675 | if (!ret_val) |
| 1676 | phy->cable_polarity = (data & mask) |
| 1677 | ? e1000_rev_polarity_reversed |
| 1678 | : e1000_rev_polarity_normal; |
| 1679 | |
| 1680 | return ret_val; |
| 1681 | } |
| 1682 | |
| 1683 | /** |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1684 | * e1000_check_polarity_ife - Check cable polarity for IFE PHY |
| 1685 | * @hw: pointer to the HW structure |
| 1686 | * |
| 1687 | * Polarity is determined on the polarity reversal feature being enabled. |
| 1688 | **/ |
| 1689 | s32 e1000_check_polarity_ife(struct e1000_hw *hw) |
| 1690 | { |
| 1691 | struct e1000_phy_info *phy = &hw->phy; |
| 1692 | s32 ret_val; |
| 1693 | u16 phy_data, offset, mask; |
| 1694 | |
| 1695 | /* |
| 1696 | * Polarity is determined based on the reversal feature being enabled. |
| 1697 | */ |
| 1698 | if (phy->polarity_correction) { |
| 1699 | offset = IFE_PHY_EXTENDED_STATUS_CONTROL; |
| 1700 | mask = IFE_PESC_POLARITY_REVERSED; |
| 1701 | } else { |
| 1702 | offset = IFE_PHY_SPECIAL_CONTROL; |
| 1703 | mask = IFE_PSC_FORCE_POLARITY; |
| 1704 | } |
| 1705 | |
| 1706 | ret_val = e1e_rphy(hw, offset, &phy_data); |
| 1707 | |
| 1708 | if (!ret_val) |
| 1709 | phy->cable_polarity = (phy_data & mask) |
| 1710 | ? e1000_rev_polarity_reversed |
| 1711 | : e1000_rev_polarity_normal; |
| 1712 | |
| 1713 | return ret_val; |
| 1714 | } |
| 1715 | |
| 1716 | /** |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1717 | * e1000_wait_autoneg - Wait for auto-neg completion |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1718 | * @hw: pointer to the HW structure |
| 1719 | * |
| 1720 | * Waits for auto-negotiation to complete or for the auto-negotiation time |
| 1721 | * limit to expire, which ever happens first. |
| 1722 | **/ |
| 1723 | static s32 e1000_wait_autoneg(struct e1000_hw *hw) |
| 1724 | { |
| 1725 | s32 ret_val = 0; |
| 1726 | u16 i, phy_status; |
| 1727 | |
| 1728 | /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */ |
| 1729 | for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) { |
| 1730 | ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status); |
| 1731 | if (ret_val) |
| 1732 | break; |
| 1733 | ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status); |
| 1734 | if (ret_val) |
| 1735 | break; |
| 1736 | if (phy_status & MII_SR_AUTONEG_COMPLETE) |
| 1737 | break; |
| 1738 | msleep(100); |
| 1739 | } |
| 1740 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1741 | /* |
| 1742 | * PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1743 | * has completed. |
| 1744 | */ |
| 1745 | return ret_val; |
| 1746 | } |
| 1747 | |
| 1748 | /** |
| 1749 | * e1000e_phy_has_link_generic - Polls PHY for link |
| 1750 | * @hw: pointer to the HW structure |
| 1751 | * @iterations: number of times to poll for link |
| 1752 | * @usec_interval: delay between polling attempts |
| 1753 | * @success: pointer to whether polling was successful or not |
| 1754 | * |
| 1755 | * Polls the PHY status register for link, 'iterations' number of times. |
| 1756 | **/ |
| 1757 | s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations, |
| 1758 | u32 usec_interval, bool *success) |
| 1759 | { |
| 1760 | s32 ret_val = 0; |
| 1761 | u16 i, phy_status; |
| 1762 | |
| 1763 | for (i = 0; i < iterations; i++) { |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1764 | /* |
| 1765 | * Some PHYs require the PHY_STATUS register to be read |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1766 | * twice due to the link bit being sticky. No harm doing |
| 1767 | * it across the board. |
| 1768 | */ |
| 1769 | ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status); |
| 1770 | if (ret_val) |
Bruce Allan | 906e8d9 | 2009-07-01 13:28:50 +0000 | [diff] [blame] | 1771 | /* |
| 1772 | * If the first read fails, another entity may have |
| 1773 | * ownership of the resources, wait and try again to |
| 1774 | * see if they have relinquished the resources yet. |
| 1775 | */ |
| 1776 | udelay(usec_interval); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1777 | ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status); |
| 1778 | if (ret_val) |
| 1779 | break; |
| 1780 | if (phy_status & MII_SR_LINK_STATUS) |
| 1781 | break; |
| 1782 | if (usec_interval >= 1000) |
| 1783 | mdelay(usec_interval/1000); |
| 1784 | else |
| 1785 | udelay(usec_interval); |
| 1786 | } |
| 1787 | |
| 1788 | *success = (i < iterations); |
| 1789 | |
| 1790 | return ret_val; |
| 1791 | } |
| 1792 | |
| 1793 | /** |
| 1794 | * e1000e_get_cable_length_m88 - Determine cable length for m88 PHY |
| 1795 | * @hw: pointer to the HW structure |
| 1796 | * |
| 1797 | * Reads the PHY specific status register to retrieve the cable length |
| 1798 | * information. The cable length is determined by averaging the minimum and |
| 1799 | * maximum values to get the "average" cable length. The m88 PHY has four |
| 1800 | * possible cable length values, which are: |
| 1801 | * Register Value Cable Length |
| 1802 | * 0 < 50 meters |
| 1803 | * 1 50 - 80 meters |
| 1804 | * 2 80 - 110 meters |
| 1805 | * 3 110 - 140 meters |
| 1806 | * 4 > 140 meters |
| 1807 | **/ |
| 1808 | s32 e1000e_get_cable_length_m88(struct e1000_hw *hw) |
| 1809 | { |
| 1810 | struct e1000_phy_info *phy = &hw->phy; |
| 1811 | s32 ret_val; |
| 1812 | u16 phy_data, index; |
| 1813 | |
| 1814 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); |
| 1815 | if (ret_val) |
Bruce Allan | eb656d4 | 2009-12-01 15:47:02 +0000 | [diff] [blame] | 1816 | goto out; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1817 | |
| 1818 | index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >> |
Bruce Allan | eb656d4 | 2009-12-01 15:47:02 +0000 | [diff] [blame] | 1819 | M88E1000_PSSR_CABLE_LENGTH_SHIFT; |
| 1820 | if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) { |
| 1821 | ret_val = -E1000_ERR_PHY; |
| 1822 | goto out; |
| 1823 | } |
| 1824 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1825 | phy->min_cable_length = e1000_m88_cable_length_table[index]; |
Bruce Allan | eb656d4 | 2009-12-01 15:47:02 +0000 | [diff] [blame] | 1826 | phy->max_cable_length = e1000_m88_cable_length_table[index + 1]; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1827 | |
| 1828 | phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2; |
| 1829 | |
Bruce Allan | eb656d4 | 2009-12-01 15:47:02 +0000 | [diff] [blame] | 1830 | out: |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1831 | return ret_val; |
| 1832 | } |
| 1833 | |
| 1834 | /** |
| 1835 | * e1000e_get_cable_length_igp_2 - Determine cable length for igp2 PHY |
| 1836 | * @hw: pointer to the HW structure |
| 1837 | * |
| 1838 | * The automatic gain control (agc) normalizes the amplitude of the |
| 1839 | * received signal, adjusting for the attenuation produced by the |
Auke Kok | 489815c | 2008-02-21 15:11:07 -0800 | [diff] [blame] | 1840 | * cable. By reading the AGC registers, which represent the |
Bruce Allan | 5ff5b66 | 2009-12-01 15:51:11 +0000 | [diff] [blame] | 1841 | * combination of coarse and fine gain value, the value can be put |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1842 | * into a lookup table to obtain the approximate cable length |
| 1843 | * for each channel. |
| 1844 | **/ |
| 1845 | s32 e1000e_get_cable_length_igp_2(struct e1000_hw *hw) |
| 1846 | { |
| 1847 | struct e1000_phy_info *phy = &hw->phy; |
| 1848 | s32 ret_val; |
| 1849 | u16 phy_data, i, agc_value = 0; |
| 1850 | u16 cur_agc_index, max_agc_index = 0; |
| 1851 | u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1; |
Jeff Kirsher | 6674450 | 2010-12-01 19:59:50 +0000 | [diff] [blame] | 1852 | static const u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = { |
| 1853 | IGP02E1000_PHY_AGC_A, |
| 1854 | IGP02E1000_PHY_AGC_B, |
| 1855 | IGP02E1000_PHY_AGC_C, |
| 1856 | IGP02E1000_PHY_AGC_D |
| 1857 | }; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1858 | |
| 1859 | /* Read the AGC registers for all channels */ |
| 1860 | for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) { |
| 1861 | ret_val = e1e_rphy(hw, agc_reg_array[i], &phy_data); |
| 1862 | if (ret_val) |
| 1863 | return ret_val; |
| 1864 | |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1865 | /* |
| 1866 | * Getting bits 15:9, which represent the combination of |
Bruce Allan | 5ff5b66 | 2009-12-01 15:51:11 +0000 | [diff] [blame] | 1867 | * coarse and fine gain values. The result is a number |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1868 | * that can be put into the lookup table to obtain the |
Bruce Allan | ad68076 | 2008-03-28 09:15:03 -0700 | [diff] [blame] | 1869 | * approximate cable length. |
| 1870 | */ |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1871 | cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) & |
| 1872 | IGP02E1000_AGC_LENGTH_MASK; |
| 1873 | |
| 1874 | /* Array index bound check. */ |
| 1875 | if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) || |
| 1876 | (cur_agc_index == 0)) |
| 1877 | return -E1000_ERR_PHY; |
| 1878 | |
| 1879 | /* Remove min & max AGC values from calculation. */ |
| 1880 | if (e1000_igp_2_cable_length_table[min_agc_index] > |
| 1881 | e1000_igp_2_cable_length_table[cur_agc_index]) |
| 1882 | min_agc_index = cur_agc_index; |
| 1883 | if (e1000_igp_2_cable_length_table[max_agc_index] < |
| 1884 | e1000_igp_2_cable_length_table[cur_agc_index]) |
| 1885 | max_agc_index = cur_agc_index; |
| 1886 | |
| 1887 | agc_value += e1000_igp_2_cable_length_table[cur_agc_index]; |
| 1888 | } |
| 1889 | |
| 1890 | agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] + |
| 1891 | e1000_igp_2_cable_length_table[max_agc_index]); |
| 1892 | agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2); |
| 1893 | |
| 1894 | /* Calculate cable length with the error range of +/- 10 meters. */ |
| 1895 | phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ? |
| 1896 | (agc_value - IGP02E1000_AGC_RANGE) : 0; |
| 1897 | phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE; |
| 1898 | |
| 1899 | phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2; |
| 1900 | |
| 1901 | return ret_val; |
| 1902 | } |
| 1903 | |
| 1904 | /** |
| 1905 | * e1000e_get_phy_info_m88 - Retrieve PHY information |
| 1906 | * @hw: pointer to the HW structure |
| 1907 | * |
| 1908 | * Valid for only copper links. Read the PHY status register (sticky read) |
| 1909 | * to verify that link is up. Read the PHY special control register to |
| 1910 | * determine the polarity and 10base-T extended distance. Read the PHY |
| 1911 | * special status register to determine MDI/MDIx and current speed. If |
| 1912 | * speed is 1000, then determine cable length, local and remote receiver. |
| 1913 | **/ |
| 1914 | s32 e1000e_get_phy_info_m88(struct e1000_hw *hw) |
| 1915 | { |
| 1916 | struct e1000_phy_info *phy = &hw->phy; |
| 1917 | s32 ret_val; |
| 1918 | u16 phy_data; |
| 1919 | bool link; |
| 1920 | |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 1921 | if (phy->media_type != e1000_media_type_copper) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1922 | e_dbg("Phy info is only valid for copper media\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1923 | return -E1000_ERR_CONFIG; |
| 1924 | } |
| 1925 | |
| 1926 | ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link); |
| 1927 | if (ret_val) |
| 1928 | return ret_val; |
| 1929 | |
| 1930 | if (!link) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1931 | e_dbg("Phy info is only valid if link is up\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 1932 | return -E1000_ERR_CONFIG; |
| 1933 | } |
| 1934 | |
| 1935 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); |
| 1936 | if (ret_val) |
| 1937 | return ret_val; |
| 1938 | |
| 1939 | phy->polarity_correction = (phy_data & |
| 1940 | M88E1000_PSCR_POLARITY_REVERSAL); |
| 1941 | |
| 1942 | ret_val = e1000_check_polarity_m88(hw); |
| 1943 | if (ret_val) |
| 1944 | return ret_val; |
| 1945 | |
| 1946 | ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); |
| 1947 | if (ret_val) |
| 1948 | return ret_val; |
| 1949 | |
| 1950 | phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX); |
| 1951 | |
| 1952 | if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) { |
| 1953 | ret_val = e1000_get_cable_length(hw); |
| 1954 | if (ret_val) |
| 1955 | return ret_val; |
| 1956 | |
| 1957 | ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &phy_data); |
| 1958 | if (ret_val) |
| 1959 | return ret_val; |
| 1960 | |
| 1961 | phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) |
| 1962 | ? e1000_1000t_rx_status_ok |
| 1963 | : e1000_1000t_rx_status_not_ok; |
| 1964 | |
| 1965 | phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) |
| 1966 | ? e1000_1000t_rx_status_ok |
| 1967 | : e1000_1000t_rx_status_not_ok; |
| 1968 | } else { |
| 1969 | /* Set values to "undefined" */ |
| 1970 | phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; |
| 1971 | phy->local_rx = e1000_1000t_rx_status_undefined; |
| 1972 | phy->remote_rx = e1000_1000t_rx_status_undefined; |
| 1973 | } |
| 1974 | |
| 1975 | return ret_val; |
| 1976 | } |
| 1977 | |
| 1978 | /** |
| 1979 | * e1000e_get_phy_info_igp - Retrieve igp PHY information |
| 1980 | * @hw: pointer to the HW structure |
| 1981 | * |
| 1982 | * Read PHY status to determine if link is up. If link is up, then |
| 1983 | * set/determine 10base-T extended distance and polarity correction. Read |
| 1984 | * PHY port status to determine MDI/MDIx and speed. Based on the speed, |
| 1985 | * determine on the cable length, local and remote receiver. |
| 1986 | **/ |
| 1987 | s32 e1000e_get_phy_info_igp(struct e1000_hw *hw) |
| 1988 | { |
| 1989 | struct e1000_phy_info *phy = &hw->phy; |
| 1990 | s32 ret_val; |
| 1991 | u16 data; |
| 1992 | bool link; |
| 1993 | |
| 1994 | ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link); |
| 1995 | if (ret_val) |
| 1996 | return ret_val; |
| 1997 | |
| 1998 | if (!link) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 1999 | e_dbg("Phy info is only valid if link is up\n"); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2000 | return -E1000_ERR_CONFIG; |
| 2001 | } |
| 2002 | |
Bruce Allan | 564ea9b | 2009-11-20 23:26:44 +0000 | [diff] [blame] | 2003 | phy->polarity_correction = true; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2004 | |
| 2005 | ret_val = e1000_check_polarity_igp(hw); |
| 2006 | if (ret_val) |
| 2007 | return ret_val; |
| 2008 | |
| 2009 | ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data); |
| 2010 | if (ret_val) |
| 2011 | return ret_val; |
| 2012 | |
| 2013 | phy->is_mdix = (data & IGP01E1000_PSSR_MDIX); |
| 2014 | |
| 2015 | if ((data & IGP01E1000_PSSR_SPEED_MASK) == |
| 2016 | IGP01E1000_PSSR_SPEED_1000MBPS) { |
| 2017 | ret_val = e1000_get_cable_length(hw); |
| 2018 | if (ret_val) |
| 2019 | return ret_val; |
| 2020 | |
| 2021 | ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &data); |
| 2022 | if (ret_val) |
| 2023 | return ret_val; |
| 2024 | |
| 2025 | phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS) |
| 2026 | ? e1000_1000t_rx_status_ok |
| 2027 | : e1000_1000t_rx_status_not_ok; |
| 2028 | |
| 2029 | phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS) |
| 2030 | ? e1000_1000t_rx_status_ok |
| 2031 | : e1000_1000t_rx_status_not_ok; |
| 2032 | } else { |
| 2033 | phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; |
| 2034 | phy->local_rx = e1000_1000t_rx_status_undefined; |
| 2035 | phy->remote_rx = e1000_1000t_rx_status_undefined; |
| 2036 | } |
| 2037 | |
| 2038 | return ret_val; |
| 2039 | } |
| 2040 | |
| 2041 | /** |
Bruce Allan | 0be8401 | 2009-12-02 17:03:18 +0000 | [diff] [blame] | 2042 | * e1000_get_phy_info_ife - Retrieves various IFE PHY states |
| 2043 | * @hw: pointer to the HW structure |
| 2044 | * |
| 2045 | * Populates "phy" structure with various feature states. |
| 2046 | **/ |
| 2047 | s32 e1000_get_phy_info_ife(struct e1000_hw *hw) |
| 2048 | { |
| 2049 | struct e1000_phy_info *phy = &hw->phy; |
| 2050 | s32 ret_val; |
| 2051 | u16 data; |
| 2052 | bool link; |
| 2053 | |
| 2054 | ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link); |
| 2055 | if (ret_val) |
| 2056 | goto out; |
| 2057 | |
| 2058 | if (!link) { |
| 2059 | e_dbg("Phy info is only valid if link is up\n"); |
| 2060 | ret_val = -E1000_ERR_CONFIG; |
| 2061 | goto out; |
| 2062 | } |
| 2063 | |
| 2064 | ret_val = e1e_rphy(hw, IFE_PHY_SPECIAL_CONTROL, &data); |
| 2065 | if (ret_val) |
| 2066 | goto out; |
| 2067 | phy->polarity_correction = (data & IFE_PSC_AUTO_POLARITY_DISABLE) |
| 2068 | ? false : true; |
| 2069 | |
| 2070 | if (phy->polarity_correction) { |
| 2071 | ret_val = e1000_check_polarity_ife(hw); |
| 2072 | if (ret_val) |
| 2073 | goto out; |
| 2074 | } else { |
| 2075 | /* Polarity is forced */ |
| 2076 | phy->cable_polarity = (data & IFE_PSC_FORCE_POLARITY) |
| 2077 | ? e1000_rev_polarity_reversed |
| 2078 | : e1000_rev_polarity_normal; |
| 2079 | } |
| 2080 | |
| 2081 | ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &data); |
| 2082 | if (ret_val) |
| 2083 | goto out; |
| 2084 | |
| 2085 | phy->is_mdix = (data & IFE_PMC_MDIX_STATUS) ? true : false; |
| 2086 | |
| 2087 | /* The following parameters are undefined for 10/100 operation. */ |
| 2088 | phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; |
| 2089 | phy->local_rx = e1000_1000t_rx_status_undefined; |
| 2090 | phy->remote_rx = e1000_1000t_rx_status_undefined; |
| 2091 | |
| 2092 | out: |
| 2093 | return ret_val; |
| 2094 | } |
| 2095 | |
| 2096 | /** |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2097 | * e1000e_phy_sw_reset - PHY software reset |
| 2098 | * @hw: pointer to the HW structure |
| 2099 | * |
| 2100 | * Does a software reset of the PHY by reading the PHY control register and |
| 2101 | * setting/write the control register reset bit to the PHY. |
| 2102 | **/ |
| 2103 | s32 e1000e_phy_sw_reset(struct e1000_hw *hw) |
| 2104 | { |
| 2105 | s32 ret_val; |
| 2106 | u16 phy_ctrl; |
| 2107 | |
| 2108 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl); |
| 2109 | if (ret_val) |
| 2110 | return ret_val; |
| 2111 | |
| 2112 | phy_ctrl |= MII_CR_RESET; |
| 2113 | ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl); |
| 2114 | if (ret_val) |
| 2115 | return ret_val; |
| 2116 | |
| 2117 | udelay(1); |
| 2118 | |
| 2119 | return ret_val; |
| 2120 | } |
| 2121 | |
| 2122 | /** |
| 2123 | * e1000e_phy_hw_reset_generic - PHY hardware reset |
| 2124 | * @hw: pointer to the HW structure |
| 2125 | * |
| 2126 | * Verify the reset block is not blocking us from resetting. Acquire |
| 2127 | * semaphore (if necessary) and read/set/write the device control reset |
| 2128 | * bit in the PHY. Wait the appropriate delay time for the device to |
Auke Kok | 489815c | 2008-02-21 15:11:07 -0800 | [diff] [blame] | 2129 | * reset and release the semaphore (if necessary). |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2130 | **/ |
| 2131 | s32 e1000e_phy_hw_reset_generic(struct e1000_hw *hw) |
| 2132 | { |
| 2133 | struct e1000_phy_info *phy = &hw->phy; |
| 2134 | s32 ret_val; |
| 2135 | u32 ctrl; |
| 2136 | |
| 2137 | ret_val = e1000_check_reset_block(hw); |
| 2138 | if (ret_val) |
| 2139 | return 0; |
| 2140 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2141 | ret_val = phy->ops.acquire(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2142 | if (ret_val) |
| 2143 | return ret_val; |
| 2144 | |
| 2145 | ctrl = er32(CTRL); |
| 2146 | ew32(CTRL, ctrl | E1000_CTRL_PHY_RST); |
| 2147 | e1e_flush(); |
| 2148 | |
| 2149 | udelay(phy->reset_delay_us); |
| 2150 | |
| 2151 | ew32(CTRL, ctrl); |
| 2152 | e1e_flush(); |
| 2153 | |
| 2154 | udelay(150); |
| 2155 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2156 | phy->ops.release(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2157 | |
| 2158 | return e1000_get_phy_cfg_done(hw); |
| 2159 | } |
| 2160 | |
| 2161 | /** |
| 2162 | * e1000e_get_cfg_done - Generic configuration done |
| 2163 | * @hw: pointer to the HW structure |
| 2164 | * |
| 2165 | * Generic function to wait 10 milli-seconds for configuration to complete |
| 2166 | * and return success. |
| 2167 | **/ |
| 2168 | s32 e1000e_get_cfg_done(struct e1000_hw *hw) |
| 2169 | { |
| 2170 | mdelay(10); |
| 2171 | return 0; |
| 2172 | } |
| 2173 | |
Bruce Allan | f4187b5 | 2008-08-26 18:36:50 -0700 | [diff] [blame] | 2174 | /** |
| 2175 | * e1000e_phy_init_script_igp3 - Inits the IGP3 PHY |
| 2176 | * @hw: pointer to the HW structure |
| 2177 | * |
| 2178 | * Initializes a Intel Gigabit PHY3 when an EEPROM is not present. |
| 2179 | **/ |
| 2180 | s32 e1000e_phy_init_script_igp3(struct e1000_hw *hw) |
| 2181 | { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 2182 | e_dbg("Running IGP 3 PHY init script\n"); |
Bruce Allan | f4187b5 | 2008-08-26 18:36:50 -0700 | [diff] [blame] | 2183 | |
| 2184 | /* PHY init IGP 3 */ |
| 2185 | /* Enable rise/fall, 10-mode work in class-A */ |
| 2186 | e1e_wphy(hw, 0x2F5B, 0x9018); |
| 2187 | /* Remove all caps from Replica path filter */ |
| 2188 | e1e_wphy(hw, 0x2F52, 0x0000); |
| 2189 | /* Bias trimming for ADC, AFE and Driver (Default) */ |
| 2190 | e1e_wphy(hw, 0x2FB1, 0x8B24); |
| 2191 | /* Increase Hybrid poly bias */ |
| 2192 | e1e_wphy(hw, 0x2FB2, 0xF8F0); |
| 2193 | /* Add 4% to Tx amplitude in Gig mode */ |
| 2194 | e1e_wphy(hw, 0x2010, 0x10B0); |
| 2195 | /* Disable trimming (TTT) */ |
| 2196 | e1e_wphy(hw, 0x2011, 0x0000); |
| 2197 | /* Poly DC correction to 94.6% + 2% for all channels */ |
| 2198 | e1e_wphy(hw, 0x20DD, 0x249A); |
| 2199 | /* ABS DC correction to 95.9% */ |
| 2200 | e1e_wphy(hw, 0x20DE, 0x00D3); |
| 2201 | /* BG temp curve trim */ |
| 2202 | e1e_wphy(hw, 0x28B4, 0x04CE); |
| 2203 | /* Increasing ADC OPAMP stage 1 currents to max */ |
| 2204 | e1e_wphy(hw, 0x2F70, 0x29E4); |
| 2205 | /* Force 1000 ( required for enabling PHY regs configuration) */ |
| 2206 | e1e_wphy(hw, 0x0000, 0x0140); |
| 2207 | /* Set upd_freq to 6 */ |
| 2208 | e1e_wphy(hw, 0x1F30, 0x1606); |
| 2209 | /* Disable NPDFE */ |
| 2210 | e1e_wphy(hw, 0x1F31, 0xB814); |
| 2211 | /* Disable adaptive fixed FFE (Default) */ |
| 2212 | e1e_wphy(hw, 0x1F35, 0x002A); |
| 2213 | /* Enable FFE hysteresis */ |
| 2214 | e1e_wphy(hw, 0x1F3E, 0x0067); |
| 2215 | /* Fixed FFE for short cable lengths */ |
| 2216 | e1e_wphy(hw, 0x1F54, 0x0065); |
| 2217 | /* Fixed FFE for medium cable lengths */ |
| 2218 | e1e_wphy(hw, 0x1F55, 0x002A); |
| 2219 | /* Fixed FFE for long cable lengths */ |
| 2220 | e1e_wphy(hw, 0x1F56, 0x002A); |
| 2221 | /* Enable Adaptive Clip Threshold */ |
| 2222 | e1e_wphy(hw, 0x1F72, 0x3FB0); |
| 2223 | /* AHT reset limit to 1 */ |
| 2224 | e1e_wphy(hw, 0x1F76, 0xC0FF); |
| 2225 | /* Set AHT master delay to 127 msec */ |
| 2226 | e1e_wphy(hw, 0x1F77, 0x1DEC); |
| 2227 | /* Set scan bits for AHT */ |
| 2228 | e1e_wphy(hw, 0x1F78, 0xF9EF); |
| 2229 | /* Set AHT Preset bits */ |
| 2230 | e1e_wphy(hw, 0x1F79, 0x0210); |
| 2231 | /* Change integ_factor of channel A to 3 */ |
| 2232 | e1e_wphy(hw, 0x1895, 0x0003); |
| 2233 | /* Change prop_factor of channels BCD to 8 */ |
| 2234 | e1e_wphy(hw, 0x1796, 0x0008); |
| 2235 | /* Change cg_icount + enable integbp for channels BCD */ |
| 2236 | e1e_wphy(hw, 0x1798, 0xD008); |
| 2237 | /* |
| 2238 | * Change cg_icount + enable integbp + change prop_factor_master |
| 2239 | * to 8 for channel A |
| 2240 | */ |
| 2241 | e1e_wphy(hw, 0x1898, 0xD918); |
| 2242 | /* Disable AHT in Slave mode on channel A */ |
| 2243 | e1e_wphy(hw, 0x187A, 0x0800); |
| 2244 | /* |
| 2245 | * Enable LPLU and disable AN to 1000 in non-D0a states, |
| 2246 | * Enable SPD+B2B |
| 2247 | */ |
| 2248 | e1e_wphy(hw, 0x0019, 0x008D); |
| 2249 | /* Enable restart AN on an1000_dis change */ |
| 2250 | e1e_wphy(hw, 0x001B, 0x2080); |
| 2251 | /* Enable wh_fifo read clock in 10/100 modes */ |
| 2252 | e1e_wphy(hw, 0x0014, 0x0045); |
| 2253 | /* Restart AN, Speed selection is 1000 */ |
| 2254 | e1e_wphy(hw, 0x0000, 0x1340); |
| 2255 | |
| 2256 | return 0; |
| 2257 | } |
| 2258 | |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2259 | /* Internal function pointers */ |
| 2260 | |
| 2261 | /** |
| 2262 | * e1000_get_phy_cfg_done - Generic PHY configuration done |
| 2263 | * @hw: pointer to the HW structure |
| 2264 | * |
| 2265 | * Return success if silicon family did not implement a family specific |
| 2266 | * get_cfg_done function. |
| 2267 | **/ |
| 2268 | static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw) |
| 2269 | { |
| 2270 | if (hw->phy.ops.get_cfg_done) |
| 2271 | return hw->phy.ops.get_cfg_done(hw); |
| 2272 | |
| 2273 | return 0; |
| 2274 | } |
| 2275 | |
| 2276 | /** |
| 2277 | * e1000_phy_force_speed_duplex - Generic force PHY speed/duplex |
| 2278 | * @hw: pointer to the HW structure |
| 2279 | * |
| 2280 | * When the silicon family has not implemented a forced speed/duplex |
| 2281 | * function for the PHY, simply return 0. |
| 2282 | **/ |
| 2283 | static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw) |
| 2284 | { |
| 2285 | if (hw->phy.ops.force_speed_duplex) |
| 2286 | return hw->phy.ops.force_speed_duplex(hw); |
| 2287 | |
| 2288 | return 0; |
| 2289 | } |
| 2290 | |
| 2291 | /** |
| 2292 | * e1000e_get_phy_type_from_id - Get PHY type from id |
| 2293 | * @phy_id: phy_id read from the phy |
| 2294 | * |
| 2295 | * Returns the phy type from the id. |
| 2296 | **/ |
| 2297 | enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id) |
| 2298 | { |
| 2299 | enum e1000_phy_type phy_type = e1000_phy_unknown; |
| 2300 | |
| 2301 | switch (phy_id) { |
| 2302 | case M88E1000_I_PHY_ID: |
| 2303 | case M88E1000_E_PHY_ID: |
| 2304 | case M88E1111_I_PHY_ID: |
| 2305 | case M88E1011_I_PHY_ID: |
| 2306 | phy_type = e1000_phy_m88; |
| 2307 | break; |
| 2308 | case IGP01E1000_I_PHY_ID: /* IGP 1 & 2 share this */ |
| 2309 | phy_type = e1000_phy_igp_2; |
| 2310 | break; |
| 2311 | case GG82563_E_PHY_ID: |
| 2312 | phy_type = e1000_phy_gg82563; |
| 2313 | break; |
| 2314 | case IGP03E1000_E_PHY_ID: |
| 2315 | phy_type = e1000_phy_igp_3; |
| 2316 | break; |
| 2317 | case IFE_E_PHY_ID: |
| 2318 | case IFE_PLUS_E_PHY_ID: |
| 2319 | case IFE_C_E_PHY_ID: |
| 2320 | phy_type = e1000_phy_ife; |
| 2321 | break; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2322 | case BME1000_E_PHY_ID: |
| 2323 | case BME1000_E_PHY_ID_R2: |
| 2324 | phy_type = e1000_phy_bm; |
| 2325 | break; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2326 | case I82578_E_PHY_ID: |
| 2327 | phy_type = e1000_phy_82578; |
| 2328 | break; |
| 2329 | case I82577_E_PHY_ID: |
| 2330 | phy_type = e1000_phy_82577; |
| 2331 | break; |
Bruce Allan | d3738bb | 2010-06-16 13:27:28 +0000 | [diff] [blame] | 2332 | case I82579_E_PHY_ID: |
| 2333 | phy_type = e1000_phy_82579; |
| 2334 | break; |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2335 | default: |
| 2336 | phy_type = e1000_phy_unknown; |
| 2337 | break; |
| 2338 | } |
| 2339 | return phy_type; |
| 2340 | } |
| 2341 | |
| 2342 | /** |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2343 | * e1000e_determine_phy_address - Determines PHY address. |
| 2344 | * @hw: pointer to the HW structure |
| 2345 | * |
| 2346 | * This uses a trial and error method to loop through possible PHY |
| 2347 | * addresses. It tests each by reading the PHY ID registers and |
| 2348 | * checking for a match. |
| 2349 | **/ |
| 2350 | s32 e1000e_determine_phy_address(struct e1000_hw *hw) |
| 2351 | { |
| 2352 | s32 ret_val = -E1000_ERR_PHY_TYPE; |
Bruce Allan | 5eb6f3c | 2009-12-02 17:02:43 +0000 | [diff] [blame] | 2353 | u32 phy_addr = 0; |
| 2354 | u32 i; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2355 | enum e1000_phy_type phy_type = e1000_phy_unknown; |
| 2356 | |
Bruce Allan | 5eb6f3c | 2009-12-02 17:02:43 +0000 | [diff] [blame] | 2357 | hw->phy.id = phy_type; |
| 2358 | |
| 2359 | for (phy_addr = 0; phy_addr < E1000_MAX_PHY_ADDR; phy_addr++) { |
| 2360 | hw->phy.addr = phy_addr; |
| 2361 | i = 0; |
| 2362 | |
| 2363 | do { |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2364 | e1000e_get_phy_id(hw); |
| 2365 | phy_type = e1000e_get_phy_type_from_id(hw->phy.id); |
| 2366 | |
Bruce Allan | 5eb6f3c | 2009-12-02 17:02:43 +0000 | [diff] [blame] | 2367 | /* |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2368 | * If phy_type is valid, break - we found our |
| 2369 | * PHY address |
| 2370 | */ |
| 2371 | if (phy_type != e1000_phy_unknown) { |
| 2372 | ret_val = 0; |
Bruce Allan | 5eb6f3c | 2009-12-02 17:02:43 +0000 | [diff] [blame] | 2373 | goto out; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2374 | } |
Bruce Allan | 1bba438 | 2011-03-19 00:27:20 +0000 | [diff] [blame] | 2375 | usleep_range(1000, 2000); |
Bruce Allan | 5eb6f3c | 2009-12-02 17:02:43 +0000 | [diff] [blame] | 2376 | i++; |
| 2377 | } while (i < 10); |
| 2378 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2379 | |
Bruce Allan | 5eb6f3c | 2009-12-02 17:02:43 +0000 | [diff] [blame] | 2380 | out: |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2381 | return ret_val; |
| 2382 | } |
| 2383 | |
| 2384 | /** |
| 2385 | * e1000_get_phy_addr_for_bm_page - Retrieve PHY page address |
| 2386 | * @page: page to access |
| 2387 | * |
| 2388 | * Returns the phy address for the page requested. |
| 2389 | **/ |
| 2390 | static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg) |
| 2391 | { |
| 2392 | u32 phy_addr = 2; |
| 2393 | |
| 2394 | if ((page >= 768) || (page == 0 && reg == 25) || (reg == 31)) |
| 2395 | phy_addr = 1; |
| 2396 | |
| 2397 | return phy_addr; |
| 2398 | } |
| 2399 | |
| 2400 | /** |
| 2401 | * e1000e_write_phy_reg_bm - Write BM PHY register |
| 2402 | * @hw: pointer to the HW structure |
| 2403 | * @offset: register offset to write to |
| 2404 | * @data: data to write at register offset |
| 2405 | * |
| 2406 | * Acquires semaphore, if necessary, then writes the data to PHY register |
| 2407 | * at the offset. Release any acquired semaphores before exiting. |
| 2408 | **/ |
| 2409 | s32 e1000e_write_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 data) |
| 2410 | { |
| 2411 | s32 ret_val; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2412 | u32 page = offset >> IGP_PAGE_SHIFT; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2413 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2414 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2415 | if (ret_val) |
| 2416 | return ret_val; |
| 2417 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2418 | /* Page 800 works differently than the rest so it has its own func */ |
| 2419 | if (page == BM_WUC_PAGE) { |
| 2420 | ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data, |
| 2421 | false); |
| 2422 | goto out; |
| 2423 | } |
| 2424 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2425 | hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset); |
| 2426 | |
| 2427 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
Bruce Allan | 90da066 | 2011-01-06 07:02:53 +0000 | [diff] [blame] | 2428 | u32 page_shift, page_select; |
| 2429 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2430 | /* |
| 2431 | * Page select is register 31 for phy address 1 and 22 for |
| 2432 | * phy address 2 and 3. Page select is shifted only for |
| 2433 | * phy address 1. |
| 2434 | */ |
| 2435 | if (hw->phy.addr == 1) { |
| 2436 | page_shift = IGP_PAGE_SHIFT; |
| 2437 | page_select = IGP01E1000_PHY_PAGE_SELECT; |
| 2438 | } else { |
| 2439 | page_shift = 0; |
| 2440 | page_select = BM_PHY_PAGE_SELECT; |
| 2441 | } |
| 2442 | |
| 2443 | /* Page is shifted left, PHY expects (page x 32) */ |
| 2444 | ret_val = e1000e_write_phy_reg_mdic(hw, page_select, |
| 2445 | (page << page_shift)); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2446 | if (ret_val) |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2447 | goto out; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2448 | } |
| 2449 | |
| 2450 | ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 2451 | data); |
| 2452 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2453 | out: |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2454 | hw->phy.ops.release(hw); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2455 | return ret_val; |
| 2456 | } |
| 2457 | |
| 2458 | /** |
| 2459 | * e1000e_read_phy_reg_bm - Read BM PHY register |
| 2460 | * @hw: pointer to the HW structure |
| 2461 | * @offset: register offset to be read |
| 2462 | * @data: pointer to the read data |
| 2463 | * |
| 2464 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
| 2465 | * and storing the retrieved information in data. Release any acquired |
| 2466 | * semaphores before exiting. |
| 2467 | **/ |
| 2468 | s32 e1000e_read_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 *data) |
| 2469 | { |
| 2470 | s32 ret_val; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2471 | u32 page = offset >> IGP_PAGE_SHIFT; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2472 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2473 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2474 | if (ret_val) |
| 2475 | return ret_val; |
| 2476 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2477 | /* Page 800 works differently than the rest so it has its own func */ |
| 2478 | if (page == BM_WUC_PAGE) { |
| 2479 | ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data, |
| 2480 | true); |
| 2481 | goto out; |
| 2482 | } |
| 2483 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2484 | hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset); |
| 2485 | |
| 2486 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
Bruce Allan | 90da066 | 2011-01-06 07:02:53 +0000 | [diff] [blame] | 2487 | u32 page_shift, page_select; |
| 2488 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2489 | /* |
| 2490 | * Page select is register 31 for phy address 1 and 22 for |
| 2491 | * phy address 2 and 3. Page select is shifted only for |
| 2492 | * phy address 1. |
| 2493 | */ |
| 2494 | if (hw->phy.addr == 1) { |
| 2495 | page_shift = IGP_PAGE_SHIFT; |
| 2496 | page_select = IGP01E1000_PHY_PAGE_SELECT; |
| 2497 | } else { |
| 2498 | page_shift = 0; |
| 2499 | page_select = BM_PHY_PAGE_SELECT; |
| 2500 | } |
| 2501 | |
| 2502 | /* Page is shifted left, PHY expects (page x 32) */ |
| 2503 | ret_val = e1000e_write_phy_reg_mdic(hw, page_select, |
| 2504 | (page << page_shift)); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2505 | if (ret_val) |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2506 | goto out; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2507 | } |
| 2508 | |
| 2509 | ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 2510 | data); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2511 | out: |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2512 | hw->phy.ops.release(hw); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2513 | return ret_val; |
| 2514 | } |
| 2515 | |
| 2516 | /** |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2517 | * e1000e_read_phy_reg_bm2 - Read BM PHY register |
| 2518 | * @hw: pointer to the HW structure |
| 2519 | * @offset: register offset to be read |
| 2520 | * @data: pointer to the read data |
| 2521 | * |
| 2522 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
| 2523 | * and storing the retrieved information in data. Release any acquired |
| 2524 | * semaphores before exiting. |
| 2525 | **/ |
| 2526 | s32 e1000e_read_phy_reg_bm2(struct e1000_hw *hw, u32 offset, u16 *data) |
| 2527 | { |
| 2528 | s32 ret_val; |
| 2529 | u16 page = (u16)(offset >> IGP_PAGE_SHIFT); |
| 2530 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2531 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2532 | if (ret_val) |
| 2533 | return ret_val; |
| 2534 | |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2535 | /* Page 800 works differently than the rest so it has its own func */ |
| 2536 | if (page == BM_WUC_PAGE) { |
| 2537 | ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data, |
| 2538 | true); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2539 | goto out; |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2540 | } |
| 2541 | |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2542 | hw->phy.addr = 1; |
| 2543 | |
| 2544 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
| 2545 | |
| 2546 | /* Page is shifted left, PHY expects (page x 32) */ |
| 2547 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_PHY_PAGE_SELECT, |
| 2548 | page); |
| 2549 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2550 | if (ret_val) |
| 2551 | goto out; |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2552 | } |
| 2553 | |
| 2554 | ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 2555 | data); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2556 | out: |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2557 | hw->phy.ops.release(hw); |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2558 | return ret_val; |
| 2559 | } |
| 2560 | |
| 2561 | /** |
| 2562 | * e1000e_write_phy_reg_bm2 - Write BM PHY register |
| 2563 | * @hw: pointer to the HW structure |
| 2564 | * @offset: register offset to write to |
| 2565 | * @data: data to write at register offset |
| 2566 | * |
| 2567 | * Acquires semaphore, if necessary, then writes the data to PHY register |
| 2568 | * at the offset. Release any acquired semaphores before exiting. |
| 2569 | **/ |
| 2570 | s32 e1000e_write_phy_reg_bm2(struct e1000_hw *hw, u32 offset, u16 data) |
| 2571 | { |
| 2572 | s32 ret_val; |
| 2573 | u16 page = (u16)(offset >> IGP_PAGE_SHIFT); |
| 2574 | |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2575 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2576 | if (ret_val) |
| 2577 | return ret_val; |
| 2578 | |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2579 | /* Page 800 works differently than the rest so it has its own func */ |
| 2580 | if (page == BM_WUC_PAGE) { |
| 2581 | ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data, |
| 2582 | false); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2583 | goto out; |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2584 | } |
| 2585 | |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2586 | hw->phy.addr = 1; |
| 2587 | |
| 2588 | if (offset > MAX_PHY_MULTI_PAGE_REG) { |
| 2589 | /* Page is shifted left, PHY expects (page x 32) */ |
| 2590 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_PHY_PAGE_SELECT, |
| 2591 | page); |
| 2592 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2593 | if (ret_val) |
| 2594 | goto out; |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2595 | } |
| 2596 | |
| 2597 | ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, |
| 2598 | data); |
| 2599 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2600 | out: |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2601 | hw->phy.ops.release(hw); |
Bruce Allan | 4662e82 | 2008-08-26 18:37:06 -0700 | [diff] [blame] | 2602 | return ret_val; |
| 2603 | } |
| 2604 | |
| 2605 | /** |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2606 | * e1000_access_phy_wakeup_reg_bm - Read BM PHY wakeup register |
| 2607 | * @hw: pointer to the HW structure |
| 2608 | * @offset: register offset to be read or written |
| 2609 | * @data: pointer to the data to read or write |
| 2610 | * @read: determines if operation is read or write |
| 2611 | * |
| 2612 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
| 2613 | * and storing the retrieved information in data. Release any acquired |
| 2614 | * semaphores before exiting. Note that procedure to read the wakeup |
| 2615 | * registers are different. It works as such: |
| 2616 | * 1) Set page 769, register 17, bit 2 = 1 |
| 2617 | * 2) Set page to 800 for host (801 if we were manageability) |
| 2618 | * 3) Write the address using the address opcode (0x11) |
| 2619 | * 4) Read or write the data using the data opcode (0x12) |
| 2620 | * 5) Restore 769_17.2 to its original value |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2621 | * |
| 2622 | * Assumes semaphore already acquired. |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2623 | **/ |
| 2624 | static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset, |
| 2625 | u16 *data, bool read) |
| 2626 | { |
| 2627 | s32 ret_val; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2628 | u16 reg = BM_PHY_REG_NUM(offset); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2629 | u16 phy_reg = 0; |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2630 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2631 | /* Gig must be disabled for MDIO accesses to page 800 */ |
| 2632 | if ((hw->mac.type == e1000_pchlan) && |
| 2633 | (!(er32(PHY_CTRL) & E1000_PHY_CTRL_GBE_DISABLE))) |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2634 | e_dbg("Attempting to access page 800 while gig enabled.\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2635 | |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2636 | /* All operations in this function are phy address 1 */ |
| 2637 | hw->phy.addr = 1; |
| 2638 | |
| 2639 | /* Set page 769 */ |
| 2640 | e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
| 2641 | (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); |
| 2642 | |
| 2643 | ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg); |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2644 | if (ret_val) { |
| 2645 | e_dbg("Could not read PHY page 769\n"); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2646 | goto out; |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2647 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2648 | |
| 2649 | /* First clear bit 4 to avoid a power state change */ |
| 2650 | phy_reg &= ~(BM_WUC_HOST_WU_BIT); |
| 2651 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2652 | if (ret_val) { |
| 2653 | e_dbg("Could not clear PHY page 769 bit 4\n"); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2654 | goto out; |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2655 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2656 | |
| 2657 | /* Write bit 2 = 1, and clear bit 4 to 769_17 */ |
| 2658 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, |
| 2659 | phy_reg | BM_WUC_ENABLE_BIT); |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2660 | if (ret_val) { |
| 2661 | e_dbg("Could not write PHY page 769 bit 2\n"); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2662 | goto out; |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2663 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2664 | |
| 2665 | /* Select page 800 */ |
| 2666 | ret_val = e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
| 2667 | (BM_WUC_PAGE << IGP_PAGE_SHIFT)); |
| 2668 | |
| 2669 | /* Write the page 800 offset value using opcode 0x11 */ |
| 2670 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ADDRESS_OPCODE, reg); |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2671 | if (ret_val) { |
| 2672 | e_dbg("Could not write address opcode to page 800\n"); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2673 | goto out; |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2674 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2675 | |
| 2676 | if (read) { |
| 2677 | /* Read the page 800 value using opcode 0x12 */ |
| 2678 | ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE, |
| 2679 | data); |
| 2680 | } else { |
Bruce Allan | 5ff5b66 | 2009-12-01 15:51:11 +0000 | [diff] [blame] | 2681 | /* Write the page 800 value using opcode 0x12 */ |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2682 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE, |
| 2683 | *data); |
| 2684 | } |
| 2685 | |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2686 | if (ret_val) { |
| 2687 | e_dbg("Could not access data value from page 800\n"); |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2688 | goto out; |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2689 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2690 | |
| 2691 | /* |
| 2692 | * Restore 769_17.2 to its original value |
| 2693 | * Set page 769 |
| 2694 | */ |
| 2695 | e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
| 2696 | (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); |
| 2697 | |
| 2698 | /* Clear 769_17.2 */ |
| 2699 | ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); |
Bruce Allan | 9b71b41 | 2009-12-01 15:53:07 +0000 | [diff] [blame] | 2700 | if (ret_val) { |
| 2701 | e_dbg("Could not clear PHY page 769 bit 2\n"); |
| 2702 | goto out; |
| 2703 | } |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2704 | |
| 2705 | out: |
Bruce Allan | 97ac8ca | 2008-04-29 09:16:05 -0700 | [diff] [blame] | 2706 | return ret_val; |
| 2707 | } |
| 2708 | |
| 2709 | /** |
Bruce Allan | 17f208d | 2009-12-01 15:47:22 +0000 | [diff] [blame] | 2710 | * e1000_power_up_phy_copper - Restore copper link in case of PHY power down |
| 2711 | * @hw: pointer to the HW structure |
| 2712 | * |
| 2713 | * In the case of a PHY power down to save power, or to turn off link during a |
| 2714 | * driver unload, or wake on lan is not enabled, restore the link to previous |
| 2715 | * settings. |
| 2716 | **/ |
| 2717 | void e1000_power_up_phy_copper(struct e1000_hw *hw) |
| 2718 | { |
| 2719 | u16 mii_reg = 0; |
| 2720 | |
| 2721 | /* The PHY will retain its settings across a power down/up cycle */ |
| 2722 | e1e_rphy(hw, PHY_CONTROL, &mii_reg); |
| 2723 | mii_reg &= ~MII_CR_POWER_DOWN; |
| 2724 | e1e_wphy(hw, PHY_CONTROL, mii_reg); |
| 2725 | } |
| 2726 | |
| 2727 | /** |
| 2728 | * e1000_power_down_phy_copper - Restore copper link in case of PHY power down |
| 2729 | * @hw: pointer to the HW structure |
| 2730 | * |
| 2731 | * In the case of a PHY power down to save power, or to turn off link during a |
| 2732 | * driver unload, or wake on lan is not enabled, restore the link to previous |
| 2733 | * settings. |
| 2734 | **/ |
| 2735 | void e1000_power_down_phy_copper(struct e1000_hw *hw) |
| 2736 | { |
| 2737 | u16 mii_reg = 0; |
| 2738 | |
| 2739 | /* The PHY will retain its settings across a power down/up cycle */ |
| 2740 | e1e_rphy(hw, PHY_CONTROL, &mii_reg); |
| 2741 | mii_reg |= MII_CR_POWER_DOWN; |
| 2742 | e1e_wphy(hw, PHY_CONTROL, mii_reg); |
Bruce Allan | 1bba438 | 2011-03-19 00:27:20 +0000 | [diff] [blame] | 2743 | usleep_range(1000, 2000); |
Bruce Allan | 17f208d | 2009-12-01 15:47:22 +0000 | [diff] [blame] | 2744 | } |
| 2745 | |
| 2746 | /** |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2747 | * e1000e_commit_phy - Soft PHY reset |
| 2748 | * @hw: pointer to the HW structure |
| 2749 | * |
| 2750 | * Performs a soft PHY reset on those that apply. This is a function pointer |
| 2751 | * entry point called by drivers. |
| 2752 | **/ |
| 2753 | s32 e1000e_commit_phy(struct e1000_hw *hw) |
| 2754 | { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2755 | if (hw->phy.ops.commit) |
| 2756 | return hw->phy.ops.commit(hw); |
Auke Kok | bc7f75f | 2007-09-17 12:30:59 -0700 | [diff] [blame] | 2757 | |
| 2758 | return 0; |
| 2759 | } |
| 2760 | |
| 2761 | /** |
| 2762 | * e1000_set_d0_lplu_state - Sets low power link up state for D0 |
| 2763 | * @hw: pointer to the HW structure |
| 2764 | * @active: boolean used to enable/disable lplu |
| 2765 | * |
| 2766 | * Success returns 0, Failure returns 1 |
| 2767 | * |
| 2768 | * The low power link up (lplu) state is set to the power management level D0 |
| 2769 | * and SmartSpeed is disabled when active is true, else clear lplu for D0 |
| 2770 | * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU |
| 2771 | * is used during Dx states where the power conservation is most important. |
| 2772 | * During driver activity, SmartSpeed should be enabled so performance is |
| 2773 | * maintained. This is a function pointer entry point called by drivers. |
| 2774 | **/ |
| 2775 | static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active) |
| 2776 | { |
| 2777 | if (hw->phy.ops.set_d0_lplu_state) |
| 2778 | return hw->phy.ops.set_d0_lplu_state(hw, active); |
| 2779 | |
| 2780 | return 0; |
| 2781 | } |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2782 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2783 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2784 | * __e1000_read_phy_reg_hv - Read HV PHY register |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2785 | * @hw: pointer to the HW structure |
| 2786 | * @offset: register offset to be read |
| 2787 | * @data: pointer to the read data |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2788 | * @locked: semaphore has already been acquired or not |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2789 | * |
| 2790 | * Acquires semaphore, if necessary, then reads the PHY register at offset |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2791 | * and stores the retrieved information in data. Release any acquired |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2792 | * semaphore before exiting. |
| 2793 | **/ |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2794 | static s32 __e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data, |
| 2795 | bool locked) |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2796 | { |
| 2797 | s32 ret_val; |
| 2798 | u16 page = BM_PHY_REG_PAGE(offset); |
| 2799 | u16 reg = BM_PHY_REG_NUM(offset); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2800 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2801 | if (!locked) { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2802 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2803 | if (ret_val) |
| 2804 | return ret_val; |
| 2805 | } |
| 2806 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2807 | /* Page 800 works differently than the rest so it has its own func */ |
| 2808 | if (page == BM_WUC_PAGE) { |
| 2809 | ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, |
| 2810 | data, true); |
| 2811 | goto out; |
| 2812 | } |
| 2813 | |
| 2814 | if (page > 0 && page < HV_INTC_FC_PAGE_START) { |
| 2815 | ret_val = e1000_access_phy_debug_regs_hv(hw, offset, |
| 2816 | data, true); |
| 2817 | goto out; |
| 2818 | } |
| 2819 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2820 | hw->phy.addr = e1000_get_phy_addr_for_hv_page(page); |
| 2821 | |
| 2822 | if (page == HV_INTC_FC_PAGE_START) |
| 2823 | page = 0; |
| 2824 | |
| 2825 | if (reg > MAX_PHY_MULTI_PAGE_REG) { |
Bruce Allan | 842ec8b | 2009-11-19 12:34:40 +0000 | [diff] [blame] | 2826 | u32 phy_addr = hw->phy.addr; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2827 | |
Bruce Allan | 842ec8b | 2009-11-19 12:34:40 +0000 | [diff] [blame] | 2828 | hw->phy.addr = 1; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2829 | |
Bruce Allan | 842ec8b | 2009-11-19 12:34:40 +0000 | [diff] [blame] | 2830 | /* Page is shifted left, PHY expects (page x 32) */ |
| 2831 | ret_val = e1000e_write_phy_reg_mdic(hw, |
| 2832 | IGP01E1000_PHY_PAGE_SELECT, |
| 2833 | (page << IGP_PAGE_SHIFT)); |
| 2834 | hw->phy.addr = phy_addr; |
| 2835 | |
| 2836 | if (ret_val) |
| 2837 | goto out; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2838 | } |
| 2839 | |
| 2840 | ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg, |
| 2841 | data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2842 | out: |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2843 | if (!locked) |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2844 | hw->phy.ops.release(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2845 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2846 | return ret_val; |
| 2847 | } |
| 2848 | |
| 2849 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2850 | * e1000_read_phy_reg_hv - Read HV PHY register |
| 2851 | * @hw: pointer to the HW structure |
| 2852 | * @offset: register offset to be read |
| 2853 | * @data: pointer to the read data |
| 2854 | * |
| 2855 | * Acquires semaphore then reads the PHY register at offset and stores |
| 2856 | * the retrieved information in data. Release the acquired semaphore |
| 2857 | * before exiting. |
| 2858 | **/ |
| 2859 | s32 e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data) |
| 2860 | { |
| 2861 | return __e1000_read_phy_reg_hv(hw, offset, data, false); |
| 2862 | } |
| 2863 | |
| 2864 | /** |
| 2865 | * e1000_read_phy_reg_hv_locked - Read HV PHY register |
| 2866 | * @hw: pointer to the HW structure |
| 2867 | * @offset: register offset to be read |
| 2868 | * @data: pointer to the read data |
| 2869 | * |
| 2870 | * Reads the PHY register at offset and stores the retrieved information |
| 2871 | * in data. Assumes semaphore already acquired. |
| 2872 | **/ |
| 2873 | s32 e1000_read_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset, u16 *data) |
| 2874 | { |
| 2875 | return __e1000_read_phy_reg_hv(hw, offset, data, true); |
| 2876 | } |
| 2877 | |
| 2878 | /** |
| 2879 | * __e1000_write_phy_reg_hv - Write HV PHY register |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2880 | * @hw: pointer to the HW structure |
| 2881 | * @offset: register offset to write to |
| 2882 | * @data: data to write at register offset |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2883 | * @locked: semaphore has already been acquired or not |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2884 | * |
| 2885 | * Acquires semaphore, if necessary, then writes the data to PHY register |
| 2886 | * at the offset. Release any acquired semaphores before exiting. |
| 2887 | **/ |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2888 | static s32 __e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data, |
| 2889 | bool locked) |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2890 | { |
| 2891 | s32 ret_val; |
| 2892 | u16 page = BM_PHY_REG_PAGE(offset); |
| 2893 | u16 reg = BM_PHY_REG_NUM(offset); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2894 | |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2895 | if (!locked) { |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2896 | ret_val = hw->phy.ops.acquire(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2897 | if (ret_val) |
| 2898 | return ret_val; |
| 2899 | } |
| 2900 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2901 | /* Page 800 works differently than the rest so it has its own func */ |
| 2902 | if (page == BM_WUC_PAGE) { |
| 2903 | ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, |
| 2904 | &data, false); |
| 2905 | goto out; |
| 2906 | } |
| 2907 | |
| 2908 | if (page > 0 && page < HV_INTC_FC_PAGE_START) { |
| 2909 | ret_val = e1000_access_phy_debug_regs_hv(hw, offset, |
| 2910 | &data, false); |
| 2911 | goto out; |
| 2912 | } |
| 2913 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2914 | hw->phy.addr = e1000_get_phy_addr_for_hv_page(page); |
| 2915 | |
| 2916 | if (page == HV_INTC_FC_PAGE_START) |
| 2917 | page = 0; |
| 2918 | |
| 2919 | /* |
| 2920 | * Workaround MDIO accesses being disabled after entering IEEE Power |
| 2921 | * Down (whenever bit 11 of the PHY Control register is set) |
| 2922 | */ |
| 2923 | if ((hw->phy.type == e1000_phy_82578) && |
| 2924 | (hw->phy.revision >= 1) && |
| 2925 | (hw->phy.addr == 2) && |
| 2926 | ((MAX_PHY_REG_ADDRESS & reg) == 0) && |
| 2927 | (data & (1 << 11))) { |
| 2928 | u16 data2 = 0x7EFF; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2929 | ret_val = e1000_access_phy_debug_regs_hv(hw, (1 << 6) | 0x3, |
| 2930 | &data2, false); |
| 2931 | if (ret_val) |
| 2932 | goto out; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2933 | } |
| 2934 | |
| 2935 | if (reg > MAX_PHY_MULTI_PAGE_REG) { |
Bruce Allan | 842ec8b | 2009-11-19 12:34:40 +0000 | [diff] [blame] | 2936 | u32 phy_addr = hw->phy.addr; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2937 | |
Bruce Allan | 842ec8b | 2009-11-19 12:34:40 +0000 | [diff] [blame] | 2938 | hw->phy.addr = 1; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2939 | |
Bruce Allan | 842ec8b | 2009-11-19 12:34:40 +0000 | [diff] [blame] | 2940 | /* Page is shifted left, PHY expects (page x 32) */ |
| 2941 | ret_val = e1000e_write_phy_reg_mdic(hw, |
| 2942 | IGP01E1000_PHY_PAGE_SELECT, |
| 2943 | (page << IGP_PAGE_SHIFT)); |
| 2944 | hw->phy.addr = phy_addr; |
| 2945 | |
| 2946 | if (ret_val) |
| 2947 | goto out; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2948 | } |
| 2949 | |
| 2950 | ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg, |
| 2951 | data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2952 | |
| 2953 | out: |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2954 | if (!locked) |
Bruce Allan | 94d8186 | 2009-11-20 23:25:26 +0000 | [diff] [blame] | 2955 | hw->phy.ops.release(hw); |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2956 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2957 | return ret_val; |
| 2958 | } |
| 2959 | |
| 2960 | /** |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 2961 | * e1000_write_phy_reg_hv - Write HV PHY register |
| 2962 | * @hw: pointer to the HW structure |
| 2963 | * @offset: register offset to write to |
| 2964 | * @data: data to write at register offset |
| 2965 | * |
| 2966 | * Acquires semaphore then writes the data to PHY register at the offset. |
| 2967 | * Release the acquired semaphores before exiting. |
| 2968 | **/ |
| 2969 | s32 e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data) |
| 2970 | { |
| 2971 | return __e1000_write_phy_reg_hv(hw, offset, data, false); |
| 2972 | } |
| 2973 | |
| 2974 | /** |
| 2975 | * e1000_write_phy_reg_hv_locked - Write HV PHY register |
| 2976 | * @hw: pointer to the HW structure |
| 2977 | * @offset: register offset to write to |
| 2978 | * @data: data to write at register offset |
| 2979 | * |
| 2980 | * Writes the data to PHY register at the offset. Assumes semaphore |
| 2981 | * already acquired. |
| 2982 | **/ |
| 2983 | s32 e1000_write_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset, u16 data) |
| 2984 | { |
| 2985 | return __e1000_write_phy_reg_hv(hw, offset, data, true); |
| 2986 | } |
| 2987 | |
| 2988 | /** |
Uwe Kleine-König | b595076 | 2010-11-01 15:38:34 -0400 | [diff] [blame] | 2989 | * e1000_get_phy_addr_for_hv_page - Get PHY address based on page |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 2990 | * @page: page to be accessed |
| 2991 | **/ |
| 2992 | static u32 e1000_get_phy_addr_for_hv_page(u32 page) |
| 2993 | { |
| 2994 | u32 phy_addr = 2; |
| 2995 | |
| 2996 | if (page >= HV_INTC_FC_PAGE_START) |
| 2997 | phy_addr = 1; |
| 2998 | |
| 2999 | return phy_addr; |
| 3000 | } |
| 3001 | |
| 3002 | /** |
| 3003 | * e1000_access_phy_debug_regs_hv - Read HV PHY vendor specific high registers |
| 3004 | * @hw: pointer to the HW structure |
| 3005 | * @offset: register offset to be read or written |
| 3006 | * @data: pointer to the data to be read or written |
| 3007 | * @read: determines if operation is read or written |
| 3008 | * |
Bruce Allan | 5ccdcec | 2009-10-26 11:24:02 +0000 | [diff] [blame] | 3009 | * Reads the PHY register at offset and stores the retreived information |
| 3010 | * in data. Assumes semaphore already acquired. Note that the procedure |
| 3011 | * to read these regs uses the address port and data port to read/write. |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3012 | **/ |
| 3013 | static s32 e1000_access_phy_debug_regs_hv(struct e1000_hw *hw, u32 offset, |
| 3014 | u16 *data, bool read) |
| 3015 | { |
| 3016 | s32 ret_val; |
| 3017 | u32 addr_reg = 0; |
| 3018 | u32 data_reg = 0; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3019 | |
| 3020 | /* This takes care of the difference with desktop vs mobile phy */ |
| 3021 | addr_reg = (hw->phy.type == e1000_phy_82578) ? |
| 3022 | I82578_ADDR_REG : I82577_ADDR_REG; |
| 3023 | data_reg = addr_reg + 1; |
| 3024 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3025 | /* All operations in this function are phy address 2 */ |
| 3026 | hw->phy.addr = 2; |
| 3027 | |
| 3028 | /* masking with 0x3F to remove the page from offset */ |
| 3029 | ret_val = e1000e_write_phy_reg_mdic(hw, addr_reg, (u16)offset & 0x3F); |
| 3030 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 3031 | e_dbg("Could not write PHY the HV address register\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3032 | goto out; |
| 3033 | } |
| 3034 | |
| 3035 | /* Read or write the data value next */ |
| 3036 | if (read) |
| 3037 | ret_val = e1000e_read_phy_reg_mdic(hw, data_reg, data); |
| 3038 | else |
| 3039 | ret_val = e1000e_write_phy_reg_mdic(hw, data_reg, *data); |
| 3040 | |
| 3041 | if (ret_val) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 3042 | e_dbg("Could not read data value from HV data register\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3043 | goto out; |
| 3044 | } |
| 3045 | |
| 3046 | out: |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3047 | return ret_val; |
| 3048 | } |
| 3049 | |
| 3050 | /** |
| 3051 | * e1000_link_stall_workaround_hv - Si workaround |
| 3052 | * @hw: pointer to the HW structure |
| 3053 | * |
| 3054 | * This function works around a Si bug where the link partner can get |
| 3055 | * a link up indication before the PHY does. If small packets are sent |
| 3056 | * by the link partner they can be placed in the packet buffer without |
| 3057 | * being properly accounted for by the PHY and will stall preventing |
| 3058 | * further packets from being received. The workaround is to clear the |
| 3059 | * packet buffer after the PHY detects link up. |
| 3060 | **/ |
| 3061 | s32 e1000_link_stall_workaround_hv(struct e1000_hw *hw) |
| 3062 | { |
| 3063 | s32 ret_val = 0; |
| 3064 | u16 data; |
| 3065 | |
| 3066 | if (hw->phy.type != e1000_phy_82578) |
| 3067 | goto out; |
| 3068 | |
Bruce Allan | e65fa87 | 2009-07-01 13:27:31 +0000 | [diff] [blame] | 3069 | /* Do not apply workaround if in PHY loopback bit 14 set */ |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3070 | e1e_rphy(hw, PHY_CONTROL, &data); |
Bruce Allan | e65fa87 | 2009-07-01 13:27:31 +0000 | [diff] [blame] | 3071 | if (data & PHY_CONTROL_LB) |
| 3072 | goto out; |
| 3073 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3074 | /* check if link is up and at 1Gbps */ |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3075 | ret_val = e1e_rphy(hw, BM_CS_STATUS, &data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3076 | if (ret_val) |
| 3077 | goto out; |
| 3078 | |
| 3079 | data &= BM_CS_STATUS_LINK_UP | |
| 3080 | BM_CS_STATUS_RESOLVED | |
| 3081 | BM_CS_STATUS_SPEED_MASK; |
| 3082 | |
| 3083 | if (data != (BM_CS_STATUS_LINK_UP | |
| 3084 | BM_CS_STATUS_RESOLVED | |
| 3085 | BM_CS_STATUS_SPEED_1000)) |
| 3086 | goto out; |
| 3087 | |
| 3088 | mdelay(200); |
| 3089 | |
| 3090 | /* flush the packets in the fifo buffer */ |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3091 | ret_val = e1e_wphy(hw, HV_MUX_DATA_CTRL, HV_MUX_DATA_CTRL_GEN_TO_MAC | |
| 3092 | HV_MUX_DATA_CTRL_FORCE_SPEED); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3093 | if (ret_val) |
| 3094 | goto out; |
| 3095 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3096 | ret_val = e1e_wphy(hw, HV_MUX_DATA_CTRL, HV_MUX_DATA_CTRL_GEN_TO_MAC); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3097 | |
| 3098 | out: |
| 3099 | return ret_val; |
| 3100 | } |
| 3101 | |
| 3102 | /** |
| 3103 | * e1000_check_polarity_82577 - Checks the polarity. |
| 3104 | * @hw: pointer to the HW structure |
| 3105 | * |
| 3106 | * Success returns 0, Failure returns -E1000_ERR_PHY (-2) |
| 3107 | * |
| 3108 | * Polarity is determined based on the PHY specific status register. |
| 3109 | **/ |
| 3110 | s32 e1000_check_polarity_82577(struct e1000_hw *hw) |
| 3111 | { |
| 3112 | struct e1000_phy_info *phy = &hw->phy; |
| 3113 | s32 ret_val; |
| 3114 | u16 data; |
| 3115 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3116 | ret_val = e1e_rphy(hw, I82577_PHY_STATUS_2, &data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3117 | |
| 3118 | if (!ret_val) |
| 3119 | phy->cable_polarity = (data & I82577_PHY_STATUS2_REV_POLARITY) |
| 3120 | ? e1000_rev_polarity_reversed |
| 3121 | : e1000_rev_polarity_normal; |
| 3122 | |
| 3123 | return ret_val; |
| 3124 | } |
| 3125 | |
| 3126 | /** |
| 3127 | * e1000_phy_force_speed_duplex_82577 - Force speed/duplex for I82577 PHY |
| 3128 | * @hw: pointer to the HW structure |
| 3129 | * |
Bruce Allan | eab50ff | 2010-05-10 15:01:30 +0000 | [diff] [blame] | 3130 | * Calls the PHY setup function to force speed and duplex. |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3131 | **/ |
| 3132 | s32 e1000_phy_force_speed_duplex_82577(struct e1000_hw *hw) |
| 3133 | { |
| 3134 | struct e1000_phy_info *phy = &hw->phy; |
| 3135 | s32 ret_val; |
| 3136 | u16 phy_data; |
| 3137 | bool link; |
| 3138 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3139 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3140 | if (ret_val) |
| 3141 | goto out; |
| 3142 | |
| 3143 | e1000e_phy_force_speed_duplex_setup(hw, &phy_data); |
| 3144 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3145 | ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3146 | if (ret_val) |
| 3147 | goto out; |
| 3148 | |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3149 | udelay(1); |
| 3150 | |
| 3151 | if (phy->autoneg_wait_to_complete) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 3152 | e_dbg("Waiting for forced speed/duplex link on 82577 phy\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3153 | |
| 3154 | ret_val = e1000e_phy_has_link_generic(hw, |
| 3155 | PHY_FORCE_LIMIT, |
| 3156 | 100000, |
| 3157 | &link); |
| 3158 | if (ret_val) |
| 3159 | goto out; |
| 3160 | |
| 3161 | if (!link) |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 3162 | e_dbg("Link taking longer than expected.\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3163 | |
| 3164 | /* Try once more */ |
| 3165 | ret_val = e1000e_phy_has_link_generic(hw, |
| 3166 | PHY_FORCE_LIMIT, |
| 3167 | 100000, |
| 3168 | &link); |
| 3169 | if (ret_val) |
| 3170 | goto out; |
| 3171 | } |
| 3172 | |
| 3173 | out: |
| 3174 | return ret_val; |
| 3175 | } |
| 3176 | |
| 3177 | /** |
| 3178 | * e1000_get_phy_info_82577 - Retrieve I82577 PHY information |
| 3179 | * @hw: pointer to the HW structure |
| 3180 | * |
| 3181 | * Read PHY status to determine if link is up. If link is up, then |
| 3182 | * set/determine 10base-T extended distance and polarity correction. Read |
| 3183 | * PHY port status to determine MDI/MDIx and speed. Based on the speed, |
| 3184 | * determine on the cable length, local and remote receiver. |
| 3185 | **/ |
| 3186 | s32 e1000_get_phy_info_82577(struct e1000_hw *hw) |
| 3187 | { |
| 3188 | struct e1000_phy_info *phy = &hw->phy; |
| 3189 | s32 ret_val; |
| 3190 | u16 data; |
| 3191 | bool link; |
| 3192 | |
| 3193 | ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link); |
| 3194 | if (ret_val) |
| 3195 | goto out; |
| 3196 | |
| 3197 | if (!link) { |
Bruce Allan | 3bb99fe | 2009-11-20 23:25:07 +0000 | [diff] [blame] | 3198 | e_dbg("Phy info is only valid if link is up\n"); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3199 | ret_val = -E1000_ERR_CONFIG; |
| 3200 | goto out; |
| 3201 | } |
| 3202 | |
| 3203 | phy->polarity_correction = true; |
| 3204 | |
| 3205 | ret_val = e1000_check_polarity_82577(hw); |
| 3206 | if (ret_val) |
| 3207 | goto out; |
| 3208 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3209 | ret_val = e1e_rphy(hw, I82577_PHY_STATUS_2, &data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3210 | if (ret_val) |
| 3211 | goto out; |
| 3212 | |
| 3213 | phy->is_mdix = (data & I82577_PHY_STATUS2_MDIX) ? true : false; |
| 3214 | |
| 3215 | if ((data & I82577_PHY_STATUS2_SPEED_MASK) == |
| 3216 | I82577_PHY_STATUS2_SPEED_1000MBPS) { |
| 3217 | ret_val = hw->phy.ops.get_cable_length(hw); |
| 3218 | if (ret_val) |
| 3219 | goto out; |
| 3220 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3221 | ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3222 | if (ret_val) |
| 3223 | goto out; |
| 3224 | |
| 3225 | phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS) |
| 3226 | ? e1000_1000t_rx_status_ok |
| 3227 | : e1000_1000t_rx_status_not_ok; |
| 3228 | |
| 3229 | phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS) |
| 3230 | ? e1000_1000t_rx_status_ok |
| 3231 | : e1000_1000t_rx_status_not_ok; |
| 3232 | } else { |
| 3233 | phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; |
| 3234 | phy->local_rx = e1000_1000t_rx_status_undefined; |
| 3235 | phy->remote_rx = e1000_1000t_rx_status_undefined; |
| 3236 | } |
| 3237 | |
| 3238 | out: |
| 3239 | return ret_val; |
| 3240 | } |
| 3241 | |
| 3242 | /** |
| 3243 | * e1000_get_cable_length_82577 - Determine cable length for 82577 PHY |
| 3244 | * @hw: pointer to the HW structure |
| 3245 | * |
| 3246 | * Reads the diagnostic status register and verifies result is valid before |
| 3247 | * placing it in the phy_cable_length field. |
| 3248 | **/ |
| 3249 | s32 e1000_get_cable_length_82577(struct e1000_hw *hw) |
| 3250 | { |
| 3251 | struct e1000_phy_info *phy = &hw->phy; |
| 3252 | s32 ret_val; |
| 3253 | u16 phy_data, length; |
| 3254 | |
Bruce Allan | 482fed8 | 2011-01-06 14:29:49 +0000 | [diff] [blame] | 3255 | ret_val = e1e_rphy(hw, I82577_PHY_DIAG_STATUS, &phy_data); |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3256 | if (ret_val) |
| 3257 | goto out; |
| 3258 | |
| 3259 | length = (phy_data & I82577_DSTATUS_CABLE_LENGTH) >> |
| 3260 | I82577_DSTATUS_CABLE_LENGTH_SHIFT; |
| 3261 | |
| 3262 | if (length == E1000_CABLE_LENGTH_UNDEFINED) |
Bruce Allan | 98086a9 | 2009-11-20 23:23:53 +0000 | [diff] [blame] | 3263 | ret_val = -E1000_ERR_PHY; |
Bruce Allan | a4f58f5 | 2009-06-02 11:29:18 +0000 | [diff] [blame] | 3264 | |
| 3265 | phy->cable_length = length; |
| 3266 | |
| 3267 | out: |
| 3268 | return ret_val; |
| 3269 | } |