2 * AMD 10Gb Ethernet PHY driver
4 * This file is available to you under your choice of the following two
9 * Copyright (c) 2014 Advanced Micro Devices, Inc.
11 * This file is free software; you may copy, redistribute and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 2 of the License, or (at
14 * your option) any later version.
16 * This file is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 * License 2: Modified BSD
27 * Copyright (c) 2014 Advanced Micro Devices, Inc.
28 * All rights reserved.
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions are met:
32 * * Redistributions of source code must retain the above copyright
33 * notice, this list of conditions and the following disclaimer.
34 * * Redistributions in binary form must reproduce the above copyright
35 * notice, this list of conditions and the following disclaimer in the
36 * documentation and/or other materials provided with the distribution.
37 * * Neither the name of Advanced Micro Devices, Inc. nor the
38 * names of its contributors may be used to endorse or promote products
39 * derived from this software without specific prior written permission.
41 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
42 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
45 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
46 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
48 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
50 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53 #include <linux/kernel.h>
54 #include <linux/device.h>
55 #include <linux/platform_device.h>
56 #include <linux/string.h>
57 #include <linux/errno.h>
58 #include <linux/unistd.h>
59 #include <linux/slab.h>
60 #include <linux/interrupt.h>
61 #include <linux/init.h>
62 #include <linux/delay.h>
63 #include <linux/netdevice.h>
64 #include <linux/etherdevice.h>
65 #include <linux/skbuff.h>
67 #include <linux/module.h>
68 #include <linux/mii.h>
69 #include <linux/ethtool.h>
70 #include <linux/phy.h>
71 #include <linux/mdio.h>
74 #include <linux/of_platform.h>
75 #include <linux/of_device.h>
76 #include <linux/uaccess.h>
79 MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>");
80 MODULE_LICENSE("Dual BSD/GPL");
81 MODULE_VERSION("1.0.0-a");
82 MODULE_DESCRIPTION("AMD 10GbE (amd-xgbe) PHY driver");
84 #define XGBE_PHY_ID 0x000162d0
85 #define XGBE_PHY_MASK 0xfffffff0
87 #define XGBE_PHY_SPEEDSET_PROPERTY "amd,speed-set"
89 #define XGBE_AN_INT_CMPLT 0x01
90 #define XGBE_AN_INC_LINK 0x02
91 #define XGBE_AN_PG_RCV 0x04
93 #define XNP_MCF_NULL_MESSAGE 0x001
94 #define XNP_ACK_PROCESSED (1 << 12)
95 #define XNP_MP_FORMATTED (1 << 13)
96 #define XNP_NP_EXCHANGE (1 << 15)
98 #define XGBE_PHY_RATECHANGE_COUNT 500
100 #ifndef MDIO_PMA_10GBR_PMD_CTRL
101 #define MDIO_PMA_10GBR_PMD_CTRL 0x0096
103 #ifndef MDIO_PMA_10GBR_FEC_CTRL
104 #define MDIO_PMA_10GBR_FEC_CTRL 0x00ab
107 #define MDIO_AN_XNP 0x0016
110 #ifndef MDIO_AN_INTMASK
111 #define MDIO_AN_INTMASK 0x8001
114 #define MDIO_AN_INT 0x8002
117 #ifndef MDIO_CTRL1_SPEED1G
118 #define MDIO_CTRL1_SPEED1G (MDIO_CTRL1_SPEED10G & ~BMCR_SPEED100)
121 /* SerDes integration register offsets */
122 #define SIR0_KR_RT_1 0x002c
123 #define SIR0_STATUS 0x0040
124 #define SIR1_SPEED 0x0000
126 /* SerDes integration register entry bit positions and sizes */
127 #define SIR0_KR_RT_1_RESET_INDEX 11
128 #define SIR0_KR_RT_1_RESET_WIDTH 1
129 #define SIR0_STATUS_RX_READY_INDEX 0
130 #define SIR0_STATUS_RX_READY_WIDTH 1
131 #define SIR0_STATUS_TX_READY_INDEX 8
132 #define SIR0_STATUS_TX_READY_WIDTH 1
133 #define SIR1_SPEED_DATARATE_INDEX 4
134 #define SIR1_SPEED_DATARATE_WIDTH 2
135 #define SIR1_SPEED_PI_SPD_SEL_INDEX 12
136 #define SIR1_SPEED_PI_SPD_SEL_WIDTH 4
137 #define SIR1_SPEED_PLLSEL_INDEX 3
138 #define SIR1_SPEED_PLLSEL_WIDTH 1
139 #define SIR1_SPEED_RATECHANGE_INDEX 6
140 #define SIR1_SPEED_RATECHANGE_WIDTH 1
141 #define SIR1_SPEED_TXAMP_INDEX 8
142 #define SIR1_SPEED_TXAMP_WIDTH 4
143 #define SIR1_SPEED_WORDMODE_INDEX 0
144 #define SIR1_SPEED_WORDMODE_WIDTH 3
146 #define SPEED_10000_CDR 0x7
147 #define SPEED_10000_PLL 0x1
148 #define SPEED_10000_RATE 0x0
149 #define SPEED_10000_TXAMP 0xa
150 #define SPEED_10000_WORD 0x7
152 #define SPEED_2500_CDR 0x2
153 #define SPEED_2500_PLL 0x0
154 #define SPEED_2500_RATE 0x1
155 #define SPEED_2500_TXAMP 0xf
156 #define SPEED_2500_WORD 0x1
158 #define SPEED_1000_CDR 0x2
159 #define SPEED_1000_PLL 0x0
160 #define SPEED_1000_RATE 0x3
161 #define SPEED_1000_TXAMP 0xf
162 #define SPEED_1000_WORD 0x1
165 /* SerDes RxTx register offsets */
166 #define RXTX_REG20 0x0050
167 #define RXTX_REG114 0x01c8
169 /* SerDes RxTx register entry bit positions and sizes */
170 #define RXTX_REG20_BLWC_ENA_INDEX 2
171 #define RXTX_REG20_BLWC_ENA_WIDTH 1
172 #define RXTX_REG114_PQ_REG_INDEX 9
173 #define RXTX_REG114_PQ_REG_WIDTH 7
175 #define RXTX_10000_BLWC 0
176 #define RXTX_10000_PQ 0x1e
178 #define RXTX_2500_BLWC 1
179 #define RXTX_2500_PQ 0xa
181 #define RXTX_1000_BLWC 1
182 #define RXTX_1000_PQ 0xa
184 /* Bit setting and getting macros
185 * The get macro will extract the current bit field value from within
188 * The set macro will clear the current bit field value within the
189 * variable and then set the bit field of the variable to the
192 #define GET_BITS(_var, _index, _width) \
193 (((_var) >> (_index)) & ((0x1 << (_width)) - 1))
195 #define SET_BITS(_var, _index, _width, _val) \
197 (_var) &= ~(((0x1 << (_width)) - 1) << (_index)); \
198 (_var) |= (((_val) & ((0x1 << (_width)) - 1)) << (_index)); \
201 #define XSIR_GET_BITS(_var, _prefix, _field) \
203 _prefix##_##_field##_INDEX, \
204 _prefix##_##_field##_WIDTH)
206 #define XSIR_SET_BITS(_var, _prefix, _field, _val) \
208 _prefix##_##_field##_INDEX, \
209 _prefix##_##_field##_WIDTH, (_val))
211 /* Macros for reading or writing SerDes integration registers
212 * The ioread macros will get bit fields or full values using the
213 * register definitions formed using the input names
215 * The iowrite macros will set bit fields or full values using the
216 * register definitions formed using the input names
218 #define XSIR0_IOREAD(_priv, _reg) \
219 ioread16((_priv)->sir0_regs + _reg)
221 #define XSIR0_IOREAD_BITS(_priv, _reg, _field) \
222 GET_BITS(XSIR0_IOREAD((_priv), _reg), \
223 _reg##_##_field##_INDEX, \
224 _reg##_##_field##_WIDTH)
226 #define XSIR0_IOWRITE(_priv, _reg, _val) \
227 iowrite16((_val), (_priv)->sir0_regs + _reg)
229 #define XSIR0_IOWRITE_BITS(_priv, _reg, _field, _val) \
231 u16 reg_val = XSIR0_IOREAD((_priv), _reg); \
233 _reg##_##_field##_INDEX, \
234 _reg##_##_field##_WIDTH, (_val)); \
235 XSIR0_IOWRITE((_priv), _reg, reg_val); \
238 #define XSIR1_IOREAD(_priv, _reg) \
239 ioread16((_priv)->sir1_regs + _reg)
241 #define XSIR1_IOREAD_BITS(_priv, _reg, _field) \
242 GET_BITS(XSIR1_IOREAD((_priv), _reg), \
243 _reg##_##_field##_INDEX, \
244 _reg##_##_field##_WIDTH)
246 #define XSIR1_IOWRITE(_priv, _reg, _val) \
247 iowrite16((_val), (_priv)->sir1_regs + _reg)
249 #define XSIR1_IOWRITE_BITS(_priv, _reg, _field, _val) \
251 u16 reg_val = XSIR1_IOREAD((_priv), _reg); \
253 _reg##_##_field##_INDEX, \
254 _reg##_##_field##_WIDTH, (_val)); \
255 XSIR1_IOWRITE((_priv), _reg, reg_val); \
259 /* Macros for reading or writing SerDes RxTx registers
260 * The ioread macros will get bit fields or full values using the
261 * register definitions formed using the input names
263 * The iowrite macros will set bit fields or full values using the
264 * register definitions formed using the input names
266 #define XRXTX_IOREAD(_priv, _reg) \
267 ioread16((_priv)->rxtx_regs + _reg)
269 #define XRXTX_IOREAD_BITS(_priv, _reg, _field) \
270 GET_BITS(XRXTX_IOREAD((_priv), _reg), \
271 _reg##_##_field##_INDEX, \
272 _reg##_##_field##_WIDTH)
274 #define XRXTX_IOWRITE(_priv, _reg, _val) \
275 iowrite16((_val), (_priv)->rxtx_regs + _reg)
277 #define XRXTX_IOWRITE_BITS(_priv, _reg, _field, _val) \
279 u16 reg_val = XRXTX_IOREAD((_priv), _reg); \
281 _reg##_##_field##_INDEX, \
282 _reg##_##_field##_WIDTH, (_val)); \
283 XRXTX_IOWRITE((_priv), _reg, reg_val); \
287 enum amd_xgbe_phy_an {
288 AMD_XGBE_AN_READY = 0,
291 AMD_XGBE_AN_PAGE_RECEIVED,
292 AMD_XGBE_AN_INCOMPAT_LINK,
293 AMD_XGBE_AN_COMPLETE,
299 enum amd_xgbe_phy_rx {
300 AMD_XGBE_RX_READY = 0,
303 AMD_XGBE_RX_COMPLETE,
306 enum amd_xgbe_phy_mode {
311 enum amd_xgbe_phy_speedset {
312 AMD_XGBE_PHY_SPEEDSET_1000_10000,
313 AMD_XGBE_PHY_SPEEDSET_2500_10000,
316 struct amd_xgbe_phy_priv {
317 struct platform_device *pdev;
320 struct phy_device *phydev;
322 /* SerDes related mmio resources */
323 struct resource *rxtx_res;
324 struct resource *sir0_res;
325 struct resource *sir1_res;
327 /* SerDes related mmio registers */
328 void __iomem *rxtx_regs; /* SerDes Rx/Tx CSRs */
329 void __iomem *sir0_regs; /* SerDes integration registers (1/2) */
330 void __iomem *sir1_regs; /* SerDes integration registers (2/2) */
332 /* Maintain link status for re-starting auto-negotiation */
334 enum amd_xgbe_phy_mode mode;
335 unsigned int speed_set;
337 /* Auto-negotiation state machine support */
338 struct mutex an_mutex;
339 enum amd_xgbe_phy_an an_result;
340 enum amd_xgbe_phy_an an_state;
341 enum amd_xgbe_phy_rx kr_state;
342 enum amd_xgbe_phy_rx kx_state;
343 struct work_struct an_work;
344 struct workqueue_struct *an_workqueue;
347 static int amd_xgbe_an_enable_kr_training(struct phy_device *phydev)
351 ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
356 phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, ret);
361 static int amd_xgbe_an_disable_kr_training(struct phy_device *phydev)
365 ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
370 phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, ret);
375 static int amd_xgbe_phy_pcs_power_cycle(struct phy_device *phydev)
379 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
383 ret |= MDIO_CTRL1_LPOWER;
384 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
386 usleep_range(75, 100);
388 ret &= ~MDIO_CTRL1_LPOWER;
389 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
394 static void amd_xgbe_phy_serdes_start_ratechange(struct phy_device *phydev)
396 struct amd_xgbe_phy_priv *priv = phydev->priv;
398 /* Assert Rx and Tx ratechange */
399 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, RATECHANGE, 1);
402 static void amd_xgbe_phy_serdes_complete_ratechange(struct phy_device *phydev)
404 struct amd_xgbe_phy_priv *priv = phydev->priv;
408 /* Release Rx and Tx ratechange */
409 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, RATECHANGE, 0);
411 /* Wait for Rx and Tx ready */
412 wait = XGBE_PHY_RATECHANGE_COUNT;
414 usleep_range(50, 75);
416 status = XSIR0_IOREAD(priv, SIR0_STATUS);
417 if (XSIR_GET_BITS(status, SIR0_STATUS, RX_READY) &&
418 XSIR_GET_BITS(status, SIR0_STATUS, TX_READY))
422 netdev_dbg(phydev->attached_dev, "SerDes rx/tx not ready (%#hx)\n",
426 static int amd_xgbe_phy_xgmii_mode(struct phy_device *phydev)
428 struct amd_xgbe_phy_priv *priv = phydev->priv;
431 /* Enable KR training */
432 ret = amd_xgbe_an_enable_kr_training(phydev);
436 /* Set PCS to KR/10G speed */
437 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
441 ret &= ~MDIO_PCS_CTRL2_TYPE;
442 ret |= MDIO_PCS_CTRL2_10GBR;
443 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2, ret);
445 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
449 ret &= ~MDIO_CTRL1_SPEEDSEL;
450 ret |= MDIO_CTRL1_SPEED10G;
451 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
453 ret = amd_xgbe_phy_pcs_power_cycle(phydev);
457 /* Set SerDes to 10G speed */
458 amd_xgbe_phy_serdes_start_ratechange(phydev);
460 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, DATARATE, SPEED_10000_RATE);
461 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, WORDMODE, SPEED_10000_WORD);
462 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, TXAMP, SPEED_10000_TXAMP);
463 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PLLSEL, SPEED_10000_PLL);
464 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PI_SPD_SEL, SPEED_10000_CDR);
466 XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, RXTX_10000_BLWC);
467 XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_10000_PQ);
469 amd_xgbe_phy_serdes_complete_ratechange(phydev);
471 priv->mode = AMD_XGBE_MODE_KR;
476 static int amd_xgbe_phy_gmii_2500_mode(struct phy_device *phydev)
478 struct amd_xgbe_phy_priv *priv = phydev->priv;
481 /* Disable KR training */
482 ret = amd_xgbe_an_disable_kr_training(phydev);
486 /* Set PCS to KX/1G speed */
487 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
491 ret &= ~MDIO_PCS_CTRL2_TYPE;
492 ret |= MDIO_PCS_CTRL2_10GBX;
493 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2, ret);
495 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
499 ret &= ~MDIO_CTRL1_SPEEDSEL;
500 ret |= MDIO_CTRL1_SPEED1G;
501 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
503 ret = amd_xgbe_phy_pcs_power_cycle(phydev);
507 /* Set SerDes to 2.5G speed */
508 amd_xgbe_phy_serdes_start_ratechange(phydev);
510 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, DATARATE, SPEED_2500_RATE);
511 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, WORDMODE, SPEED_2500_WORD);
512 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, TXAMP, SPEED_2500_TXAMP);
513 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PLLSEL, SPEED_2500_PLL);
514 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PI_SPD_SEL, SPEED_2500_CDR);
516 XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, RXTX_2500_BLWC);
517 XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_2500_PQ);
519 amd_xgbe_phy_serdes_complete_ratechange(phydev);
521 priv->mode = AMD_XGBE_MODE_KX;
526 static int amd_xgbe_phy_gmii_mode(struct phy_device *phydev)
528 struct amd_xgbe_phy_priv *priv = phydev->priv;
531 /* Disable KR training */
532 ret = amd_xgbe_an_disable_kr_training(phydev);
536 /* Set PCS to KX/1G speed */
537 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
541 ret &= ~MDIO_PCS_CTRL2_TYPE;
542 ret |= MDIO_PCS_CTRL2_10GBX;
543 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2, ret);
545 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
549 ret &= ~MDIO_CTRL1_SPEEDSEL;
550 ret |= MDIO_CTRL1_SPEED1G;
551 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
553 ret = amd_xgbe_phy_pcs_power_cycle(phydev);
557 /* Set SerDes to 1G speed */
558 amd_xgbe_phy_serdes_start_ratechange(phydev);
560 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, DATARATE, SPEED_1000_RATE);
561 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, WORDMODE, SPEED_1000_WORD);
562 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, TXAMP, SPEED_1000_TXAMP);
563 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PLLSEL, SPEED_1000_PLL);
564 XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PI_SPD_SEL, SPEED_1000_CDR);
566 XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, RXTX_1000_BLWC);
567 XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_1000_PQ);
569 amd_xgbe_phy_serdes_complete_ratechange(phydev);
571 priv->mode = AMD_XGBE_MODE_KX;
576 static int amd_xgbe_phy_switch_mode(struct phy_device *phydev)
578 struct amd_xgbe_phy_priv *priv = phydev->priv;
581 /* If we are in KR switch to KX, and vice-versa */
582 if (priv->mode == AMD_XGBE_MODE_KR) {
583 if (priv->speed_set == AMD_XGBE_PHY_SPEEDSET_1000_10000)
584 ret = amd_xgbe_phy_gmii_mode(phydev);
586 ret = amd_xgbe_phy_gmii_2500_mode(phydev);
588 ret = amd_xgbe_phy_xgmii_mode(phydev);
594 static enum amd_xgbe_phy_an amd_xgbe_an_switch_mode(struct phy_device *phydev)
598 ret = amd_xgbe_phy_switch_mode(phydev);
600 return AMD_XGBE_AN_ERROR;
602 return AMD_XGBE_AN_START;
605 static enum amd_xgbe_phy_an amd_xgbe_an_tx_training(struct phy_device *phydev,
606 enum amd_xgbe_phy_rx *state)
608 struct amd_xgbe_phy_priv *priv = phydev->priv;
609 int ad_reg, lp_reg, ret;
611 *state = AMD_XGBE_RX_COMPLETE;
613 /* If we're in KX mode then we're done */
614 if (priv->mode == AMD_XGBE_MODE_KX)
615 return AMD_XGBE_AN_EVENT;
617 /* Enable/Disable FEC */
618 ad_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
620 return AMD_XGBE_AN_ERROR;
622 lp_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_LPA + 2);
624 return AMD_XGBE_AN_ERROR;
626 ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FEC_CTRL);
628 return AMD_XGBE_AN_ERROR;
630 if ((ad_reg & 0xc000) && (lp_reg & 0xc000))
635 phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FEC_CTRL, ret);
637 /* Start KR training */
638 ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
640 return AMD_XGBE_AN_ERROR;
642 XSIR0_IOWRITE_BITS(priv, SIR0_KR_RT_1, RESET, 1);
645 phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, ret);
647 XSIR0_IOWRITE_BITS(priv, SIR0_KR_RT_1, RESET, 0);
649 return AMD_XGBE_AN_EVENT;
652 static enum amd_xgbe_phy_an amd_xgbe_an_tx_xnp(struct phy_device *phydev,
653 enum amd_xgbe_phy_rx *state)
657 *state = AMD_XGBE_RX_XNP;
659 msg = XNP_MCF_NULL_MESSAGE;
660 msg |= XNP_MP_FORMATTED;
662 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_XNP + 2, 0);
663 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_XNP + 1, 0);
664 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_XNP, msg);
666 return AMD_XGBE_AN_EVENT;
669 static enum amd_xgbe_phy_an amd_xgbe_an_rx_bpa(struct phy_device *phydev,
670 enum amd_xgbe_phy_rx *state)
672 struct amd_xgbe_phy_priv *priv = phydev->priv;
673 unsigned int link_support;
674 int ret, ad_reg, lp_reg;
676 /* Read Base Ability register 2 first */
677 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_LPA + 1);
679 return AMD_XGBE_AN_ERROR;
681 /* Check for a supported mode, otherwise restart in a different one */
682 link_support = (priv->mode == AMD_XGBE_MODE_KR) ? 0x80 : 0x20;
683 if (!(ret & link_support))
684 return amd_xgbe_an_switch_mode(phydev);
686 /* Check Extended Next Page support */
687 ad_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
689 return AMD_XGBE_AN_ERROR;
691 lp_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_LPA);
693 return AMD_XGBE_AN_ERROR;
695 return ((ad_reg & XNP_NP_EXCHANGE) || (lp_reg & XNP_NP_EXCHANGE)) ?
696 amd_xgbe_an_tx_xnp(phydev, state) :
697 amd_xgbe_an_tx_training(phydev, state);
700 static enum amd_xgbe_phy_an amd_xgbe_an_rx_xnp(struct phy_device *phydev,
701 enum amd_xgbe_phy_rx *state)
705 /* Check Extended Next Page support */
706 ad_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
708 return AMD_XGBE_AN_ERROR;
710 lp_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_LPA);
712 return AMD_XGBE_AN_ERROR;
714 return ((ad_reg & XNP_NP_EXCHANGE) || (lp_reg & XNP_NP_EXCHANGE)) ?
715 amd_xgbe_an_tx_xnp(phydev, state) :
716 amd_xgbe_an_tx_training(phydev, state);
719 static enum amd_xgbe_phy_an amd_xgbe_an_start(struct phy_device *phydev)
721 struct amd_xgbe_phy_priv *priv = phydev->priv;
724 /* Be sure we aren't looping trying to negotiate */
725 if (priv->mode == AMD_XGBE_MODE_KR) {
726 if (priv->kr_state != AMD_XGBE_RX_READY)
727 return AMD_XGBE_AN_NO_LINK;
728 priv->kr_state = AMD_XGBE_RX_BPA;
730 if (priv->kx_state != AMD_XGBE_RX_READY)
731 return AMD_XGBE_AN_NO_LINK;
732 priv->kx_state = AMD_XGBE_RX_BPA;
735 /* Set up Advertisement register 3 first */
736 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
738 return AMD_XGBE_AN_ERROR;
740 if (phydev->supported & SUPPORTED_10000baseR_FEC)
745 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2, ret);
747 /* Set up Advertisement register 2 next */
748 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1);
750 return AMD_XGBE_AN_ERROR;
752 if (phydev->supported & SUPPORTED_10000baseKR_Full)
757 if ((phydev->supported & SUPPORTED_1000baseKX_Full) ||
758 (phydev->supported & SUPPORTED_2500baseX_Full))
763 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1, ret);
765 /* Set up Advertisement register 1 last */
766 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
768 return AMD_XGBE_AN_ERROR;
770 if (phydev->supported & SUPPORTED_Pause)
775 if (phydev->supported & SUPPORTED_Asym_Pause)
780 /* We don't intend to perform XNP */
781 ret &= ~XNP_NP_EXCHANGE;
783 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE, ret);
785 /* Enable and start auto-negotiation */
786 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_INT, 0);
788 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1);
790 return AMD_XGBE_AN_ERROR;
792 ret |= MDIO_AN_CTRL1_ENABLE;
793 ret |= MDIO_AN_CTRL1_RESTART;
794 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1, ret);
796 return AMD_XGBE_AN_EVENT;
799 static enum amd_xgbe_phy_an amd_xgbe_an_event(struct phy_device *phydev)
801 enum amd_xgbe_phy_an new_state;
804 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_INT);
806 return AMD_XGBE_AN_ERROR;
808 new_state = AMD_XGBE_AN_EVENT;
809 if (ret & XGBE_AN_PG_RCV)
810 new_state = AMD_XGBE_AN_PAGE_RECEIVED;
811 else if (ret & XGBE_AN_INC_LINK)
812 new_state = AMD_XGBE_AN_INCOMPAT_LINK;
813 else if (ret & XGBE_AN_INT_CMPLT)
814 new_state = AMD_XGBE_AN_COMPLETE;
816 if (new_state != AMD_XGBE_AN_EVENT)
817 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_INT, 0);
822 static enum amd_xgbe_phy_an amd_xgbe_an_page_received(struct phy_device *phydev)
824 struct amd_xgbe_phy_priv *priv = phydev->priv;
825 enum amd_xgbe_phy_rx *state;
828 state = (priv->mode == AMD_XGBE_MODE_KR) ? &priv->kr_state
832 case AMD_XGBE_RX_BPA:
833 ret = amd_xgbe_an_rx_bpa(phydev, state);
836 case AMD_XGBE_RX_XNP:
837 ret = amd_xgbe_an_rx_xnp(phydev, state);
841 ret = AMD_XGBE_AN_ERROR;
847 static enum amd_xgbe_phy_an amd_xgbe_an_incompat_link(struct phy_device *phydev)
849 return amd_xgbe_an_switch_mode(phydev);
852 static void amd_xgbe_an_state_machine(struct work_struct *work)
854 struct amd_xgbe_phy_priv *priv = container_of(work,
855 struct amd_xgbe_phy_priv,
857 struct phy_device *phydev = priv->phydev;
858 enum amd_xgbe_phy_an cur_state;
860 unsigned int an_supported = 0;
863 mutex_lock(&priv->an_mutex);
865 cur_state = priv->an_state;
867 switch (priv->an_state) {
868 case AMD_XGBE_AN_START:
869 priv->an_state = amd_xgbe_an_start(phydev);
873 case AMD_XGBE_AN_EVENT:
874 priv->an_state = amd_xgbe_an_event(phydev);
877 case AMD_XGBE_AN_PAGE_RECEIVED:
878 priv->an_state = amd_xgbe_an_page_received(phydev);
882 case AMD_XGBE_AN_INCOMPAT_LINK:
883 priv->an_state = amd_xgbe_an_incompat_link(phydev);
886 case AMD_XGBE_AN_COMPLETE:
887 netdev_info(phydev->attached_dev, "%s successful\n",
888 an_supported ? "Auto negotiation"
889 : "Parallel detection");
892 case AMD_XGBE_AN_NO_LINK:
893 case AMD_XGBE_AN_EXIT:
897 priv->an_state = AMD_XGBE_AN_ERROR;
900 if (priv->an_state == AMD_XGBE_AN_ERROR) {
901 netdev_err(phydev->attached_dev,
902 "error during auto-negotiation, state=%u\n",
907 sleep = (priv->an_state == AMD_XGBE_AN_EVENT) ? 1 : 0;
909 mutex_unlock(&priv->an_mutex);
912 usleep_range(20, 50);
916 priv->an_result = priv->an_state;
917 priv->an_state = AMD_XGBE_AN_READY;
919 mutex_unlock(&priv->an_mutex);
922 static int amd_xgbe_phy_soft_reset(struct phy_device *phydev)
926 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
930 ret |= MDIO_CTRL1_RESET;
931 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
936 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
939 } while ((ret & MDIO_CTRL1_RESET) && --count);
941 if (ret & MDIO_CTRL1_RESET)
947 static int amd_xgbe_phy_config_init(struct phy_device *phydev)
949 struct amd_xgbe_phy_priv *priv = phydev->priv;
951 /* Initialize supported features */
952 phydev->supported = SUPPORTED_Autoneg;
953 phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
954 phydev->supported |= SUPPORTED_Backplane;
955 phydev->supported |= SUPPORTED_10000baseKR_Full |
956 SUPPORTED_10000baseR_FEC;
957 switch (priv->speed_set) {
958 case AMD_XGBE_PHY_SPEEDSET_1000_10000:
959 phydev->supported |= SUPPORTED_1000baseKX_Full;
961 case AMD_XGBE_PHY_SPEEDSET_2500_10000:
962 phydev->supported |= SUPPORTED_2500baseX_Full;
965 phydev->advertising = phydev->supported;
967 /* Turn off and clear interrupts */
968 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_INTMASK, 0);
969 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_INT, 0);
974 static int amd_xgbe_phy_setup_forced(struct phy_device *phydev)
978 /* Disable auto-negotiation */
979 ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1);
983 ret &= ~MDIO_AN_CTRL1_ENABLE;
984 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1, ret);
986 /* Validate/Set specified speed */
987 switch (phydev->speed) {
989 ret = amd_xgbe_phy_xgmii_mode(phydev);
993 ret = amd_xgbe_phy_gmii_2500_mode(phydev);
997 ret = amd_xgbe_phy_gmii_mode(phydev);
1007 /* Validate duplex mode */
1008 if (phydev->duplex != DUPLEX_FULL)
1012 phydev->asym_pause = 0;
1017 static int amd_xgbe_phy_config_aneg(struct phy_device *phydev)
1019 struct amd_xgbe_phy_priv *priv = phydev->priv;
1020 u32 mmd_mask = phydev->c45_ids.devices_in_package;
1023 if (phydev->autoneg != AUTONEG_ENABLE)
1024 return amd_xgbe_phy_setup_forced(phydev);
1026 /* Make sure we have the AN MMD present */
1027 if (!(mmd_mask & MDIO_DEVS_AN))
1030 /* Get the current speed mode */
1031 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
1035 /* Start/Restart the auto-negotiation state machine */
1036 mutex_lock(&priv->an_mutex);
1037 priv->an_result = AMD_XGBE_AN_READY;
1038 priv->an_state = AMD_XGBE_AN_START;
1039 priv->kr_state = AMD_XGBE_RX_READY;
1040 priv->kx_state = AMD_XGBE_RX_READY;
1041 mutex_unlock(&priv->an_mutex);
1043 queue_work(priv->an_workqueue, &priv->an_work);
1048 static int amd_xgbe_phy_aneg_done(struct phy_device *phydev)
1050 struct amd_xgbe_phy_priv *priv = phydev->priv;
1051 enum amd_xgbe_phy_an state;
1053 mutex_lock(&priv->an_mutex);
1054 state = priv->an_result;
1055 mutex_unlock(&priv->an_mutex);
1057 return (state == AMD_XGBE_AN_COMPLETE);
1060 static int amd_xgbe_phy_update_link(struct phy_device *phydev)
1062 struct amd_xgbe_phy_priv *priv = phydev->priv;
1063 enum amd_xgbe_phy_an state;
1064 unsigned int check_again, autoneg;
1067 /* If we're doing auto-negotiation don't report link down */
1068 mutex_lock(&priv->an_mutex);
1069 state = priv->an_state;
1070 mutex_unlock(&priv->an_mutex);
1072 if (state != AMD_XGBE_AN_READY) {
1077 /* Since the device can be in the wrong mode when a link is
1078 * (re-)established (cable connected after the interface is
1079 * up, etc.), the link status may report no link. If there
1080 * is no link, try switching modes and checking the status
1081 * again if auto negotiation is enabled.
1083 check_again = (phydev->autoneg == AUTONEG_ENABLE) ? 1 : 0;
1085 /* Link status is latched low, so read once to clear
1086 * and then read again to get current state
1088 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_STAT1);
1092 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_STAT1);
1096 phydev->link = (ret & MDIO_STAT1_LSTATUS) ? 1 : 0;
1098 if (!phydev->link) {
1100 ret = amd_xgbe_phy_switch_mode(phydev);
1108 autoneg = (phydev->link && !priv->link) ? 1 : 0;
1109 priv->link = phydev->link;
1111 /* Link is (back) up, re-start auto-negotiation */
1112 ret = amd_xgbe_phy_config_aneg(phydev);
1120 static int amd_xgbe_phy_read_status(struct phy_device *phydev)
1122 struct amd_xgbe_phy_priv *priv = phydev->priv;
1123 u32 mmd_mask = phydev->c45_ids.devices_in_package;
1124 int ret, mode, ad_ret, lp_ret;
1126 ret = amd_xgbe_phy_update_link(phydev);
1130 mode = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
1133 mode &= MDIO_PCS_CTRL2_TYPE;
1135 if (phydev->autoneg == AUTONEG_ENABLE) {
1136 if (!(mmd_mask & MDIO_DEVS_AN))
1139 if (!amd_xgbe_phy_aneg_done(phydev))
1142 /* Compare Advertisement and Link Partner register 1 */
1143 ad_ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
1146 lp_ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_LPA);
1151 phydev->pause = (ad_ret & 0x400) ? 1 : 0;
1152 phydev->asym_pause = (ad_ret & 0x800) ? 1 : 0;
1154 /* Compare Advertisement and Link Partner register 2 */
1155 ad_ret = phy_read_mmd(phydev, MDIO_MMD_AN,
1156 MDIO_AN_ADVERTISE + 1);
1159 lp_ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_LPA + 1);
1164 if (ad_ret & 0x80) {
1165 phydev->speed = SPEED_10000;
1166 if (mode != MDIO_PCS_CTRL2_10GBR) {
1167 ret = amd_xgbe_phy_xgmii_mode(phydev);
1172 int (*mode_fcn)(struct phy_device *);
1174 if (priv->speed_set ==
1175 AMD_XGBE_PHY_SPEEDSET_1000_10000) {
1176 phydev->speed = SPEED_1000;
1177 mode_fcn = amd_xgbe_phy_gmii_mode;
1179 phydev->speed = SPEED_2500;
1180 mode_fcn = amd_xgbe_phy_gmii_2500_mode;
1183 if (mode == MDIO_PCS_CTRL2_10GBR) {
1184 ret = mode_fcn(phydev);
1190 phydev->duplex = DUPLEX_FULL;
1192 if (mode == MDIO_PCS_CTRL2_10GBR) {
1193 phydev->speed = SPEED_10000;
1195 if (priv->speed_set ==
1196 AMD_XGBE_PHY_SPEEDSET_1000_10000)
1197 phydev->speed = SPEED_1000;
1199 phydev->speed = SPEED_2500;
1201 phydev->duplex = DUPLEX_FULL;
1203 phydev->asym_pause = 0;
1209 static int amd_xgbe_phy_suspend(struct phy_device *phydev)
1213 mutex_lock(&phydev->lock);
1215 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
1219 ret |= MDIO_CTRL1_LPOWER;
1220 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
1225 mutex_unlock(&phydev->lock);
1230 static int amd_xgbe_phy_resume(struct phy_device *phydev)
1234 mutex_lock(&phydev->lock);
1236 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1);
1240 ret &= ~MDIO_CTRL1_LPOWER;
1241 phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, ret);
1246 mutex_unlock(&phydev->lock);
1251 static int amd_xgbe_phy_probe(struct phy_device *phydev)
1253 struct amd_xgbe_phy_priv *priv;
1254 struct platform_device *pdev;
1257 const __be32 *property;
1258 unsigned int speed_set;
1261 if (!phydev->dev.of_node)
1264 pdev = of_find_device_by_node(phydev->dev.of_node);
1269 wq_name = kasprintf(GFP_KERNEL, "%s-amd-xgbe-phy", phydev->bus->name);
1275 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1283 priv->phydev = phydev;
1285 /* Get the device mmio areas */
1286 priv->rxtx_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1287 priv->rxtx_regs = devm_ioremap_resource(dev, priv->rxtx_res);
1288 if (IS_ERR(priv->rxtx_regs)) {
1289 dev_err(dev, "rxtx ioremap failed\n");
1290 ret = PTR_ERR(priv->rxtx_regs);
1294 priv->sir0_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1295 priv->sir0_regs = devm_ioremap_resource(dev, priv->sir0_res);
1296 if (IS_ERR(priv->sir0_regs)) {
1297 dev_err(dev, "sir0 ioremap failed\n");
1298 ret = PTR_ERR(priv->sir0_regs);
1302 priv->sir1_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
1303 priv->sir1_regs = devm_ioremap_resource(dev, priv->sir1_res);
1304 if (IS_ERR(priv->sir1_regs)) {
1305 dev_err(dev, "sir1 ioremap failed\n");
1306 ret = PTR_ERR(priv->sir1_regs);
1310 /* Get the device speed set property */
1312 property = of_get_property(dev->of_node, XGBE_PHY_SPEEDSET_PROPERTY,
1315 speed_set = be32_to_cpu(*property);
1317 switch (speed_set) {
1319 priv->speed_set = AMD_XGBE_PHY_SPEEDSET_1000_10000;
1322 priv->speed_set = AMD_XGBE_PHY_SPEEDSET_2500_10000;
1325 dev_err(dev, "invalid amd,speed-set property\n");
1332 ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
1335 if ((ret & MDIO_PCS_CTRL2_TYPE) == MDIO_PCS_CTRL2_10GBR)
1336 priv->mode = AMD_XGBE_MODE_KR;
1338 priv->mode = AMD_XGBE_MODE_KX;
1340 mutex_init(&priv->an_mutex);
1341 INIT_WORK(&priv->an_work, amd_xgbe_an_state_machine);
1342 priv->an_workqueue = create_singlethread_workqueue(wq_name);
1343 if (!priv->an_workqueue) {
1348 phydev->priv = priv;
1356 devm_iounmap(dev, priv->sir1_regs);
1357 devm_release_mem_region(dev, priv->sir1_res->start,
1358 resource_size(priv->sir1_res));
1361 devm_iounmap(dev, priv->sir0_regs);
1362 devm_release_mem_region(dev, priv->sir0_res->start,
1363 resource_size(priv->sir0_res));
1366 devm_iounmap(dev, priv->rxtx_regs);
1367 devm_release_mem_region(dev, priv->rxtx_res->start,
1368 resource_size(priv->rxtx_res));
1371 devm_kfree(dev, priv);
1382 static void amd_xgbe_phy_remove(struct phy_device *phydev)
1384 struct amd_xgbe_phy_priv *priv = phydev->priv;
1385 struct device *dev = priv->dev;
1387 /* Stop any in process auto-negotiation */
1388 mutex_lock(&priv->an_mutex);
1389 priv->an_state = AMD_XGBE_AN_EXIT;
1390 mutex_unlock(&priv->an_mutex);
1392 flush_workqueue(priv->an_workqueue);
1393 destroy_workqueue(priv->an_workqueue);
1395 /* Release resources */
1396 devm_iounmap(dev, priv->sir1_regs);
1397 devm_release_mem_region(dev, priv->sir1_res->start,
1398 resource_size(priv->sir1_res));
1400 devm_iounmap(dev, priv->sir0_regs);
1401 devm_release_mem_region(dev, priv->sir0_res->start,
1402 resource_size(priv->sir0_res));
1404 devm_iounmap(dev, priv->rxtx_regs);
1405 devm_release_mem_region(dev, priv->rxtx_res->start,
1406 resource_size(priv->rxtx_res));
1408 devm_kfree(dev, priv);
1411 static int amd_xgbe_match_phy_device(struct phy_device *phydev)
1413 return phydev->c45_ids.device_ids[MDIO_MMD_PCS] == XGBE_PHY_ID;
1416 static struct phy_driver amd_xgbe_phy_driver[] = {
1418 .phy_id = XGBE_PHY_ID,
1419 .phy_id_mask = XGBE_PHY_MASK,
1420 .name = "AMD XGBE PHY",
1422 .probe = amd_xgbe_phy_probe,
1423 .remove = amd_xgbe_phy_remove,
1424 .soft_reset = amd_xgbe_phy_soft_reset,
1425 .config_init = amd_xgbe_phy_config_init,
1426 .suspend = amd_xgbe_phy_suspend,
1427 .resume = amd_xgbe_phy_resume,
1428 .config_aneg = amd_xgbe_phy_config_aneg,
1429 .aneg_done = amd_xgbe_phy_aneg_done,
1430 .read_status = amd_xgbe_phy_read_status,
1431 .match_phy_device = amd_xgbe_match_phy_device,
1433 .owner = THIS_MODULE,
1438 static int __init amd_xgbe_phy_init(void)
1440 return phy_drivers_register(amd_xgbe_phy_driver,
1441 ARRAY_SIZE(amd_xgbe_phy_driver));
1444 static void __exit amd_xgbe_phy_exit(void)
1446 phy_drivers_unregister(amd_xgbe_phy_driver,
1447 ARRAY_SIZE(amd_xgbe_phy_driver));
1450 module_init(amd_xgbe_phy_init);
1451 module_exit(amd_xgbe_phy_exit);
1453 static struct mdio_device_id __maybe_unused amd_xgbe_phy_ids[] = {
1454 { XGBE_PHY_ID, XGBE_PHY_MASK },
1457 MODULE_DEVICE_TABLE(mdio, amd_xgbe_phy_ids);