1 /**************************************************************************
3 Copyright (c) 2007, Chelsio Inc.
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
12 2. Neither the name of the Chelsio Corporation nor the names of its
13 contributors may be used to endorse or promote products derived from
14 this software without specific prior written permission.
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 POSSIBILITY OF SUCH DAMAGE.
28 ***************************************************************************/
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 #include <cxgb_include.h>
36 #include <dev/cxgb/cxgb_include.h>
40 #define msleep t3_os_sleep
42 /* VSC8211 PHY specific registers. */
44 VSC8211_SIGDET_CTRL = 19,
45 VSC8211_EXT_CTRL = 23,
46 VSC8211_INTR_ENABLE = 25,
47 VSC8211_INTR_STATUS = 26,
48 VSC8211_LED_CTRL = 27,
49 VSC8211_AUX_CTRL_STAT = 28,
50 VSC8211_EXT_PAGE_AXS = 31,
54 VSC_INTR_RX_ERR = 1 << 0,
55 VSC_INTR_MS_ERR = 1 << 1, /* master/slave resolution error */
56 VSC_INTR_CABLE = 1 << 2, /* cable impairment */
57 VSC_INTR_FALSE_CARR = 1 << 3, /* false carrier */
58 VSC_INTR_MEDIA_CHG = 1 << 4, /* AMS media change */
59 VSC_INTR_RX_FIFO = 1 << 5, /* Rx FIFO over/underflow */
60 VSC_INTR_TX_FIFO = 1 << 6, /* Tx FIFO over/underflow */
61 VSC_INTR_DESCRAMBL = 1 << 7, /* descrambler lock-lost */
62 VSC_INTR_SYMBOL_ERR = 1 << 8, /* symbol error */
63 VSC_INTR_NEG_DONE = 1 << 10, /* autoneg done */
64 VSC_INTR_NEG_ERR = 1 << 11, /* autoneg error */
65 VSC_INTR_DPLX_CHG = 1 << 12, /* duplex change */
66 VSC_INTR_LINK_CHG = 1 << 13, /* link change */
67 VSC_INTR_SPD_CHG = 1 << 14, /* speed change */
68 VSC_INTR_ENABLE = 1 << 15, /* interrupt enable */
72 VSC_CTRL_CLAUSE37_VIEW = 1 << 4, /* Switch to Clause 37 view */
73 VSC_CTRL_MEDIA_MODE_HI = 0xf000 /* High part of media mode select */
76 #define CFG_CHG_INTR_MASK (VSC_INTR_LINK_CHG | VSC_INTR_NEG_ERR | \
77 VSC_INTR_DPLX_CHG | VSC_INTR_SPD_CHG | \
79 #define INTR_MASK (CFG_CHG_INTR_MASK | VSC_INTR_TX_FIFO | VSC_INTR_RX_FIFO | \
82 /* PHY specific auxiliary control & status register fields */
83 #define S_ACSR_ACTIPHY_TMR 0
84 #define M_ACSR_ACTIPHY_TMR 0x3
85 #define V_ACSR_ACTIPHY_TMR(x) ((x) << S_ACSR_ACTIPHY_TMR)
87 #define S_ACSR_SPEED 3
88 #define M_ACSR_SPEED 0x3
89 #define G_ACSR_SPEED(x) (((x) >> S_ACSR_SPEED) & M_ACSR_SPEED)
91 #define S_ACSR_DUPLEX 5
92 #define F_ACSR_DUPLEX (1 << S_ACSR_DUPLEX)
94 #define S_ACSR_ACTIPHY 6
95 #define F_ACSR_ACTIPHY (1 << S_ACSR_ACTIPHY)
98 * Reset the PHY. This PHY completes reset immediately so we never wait.
100 static int vsc8211_reset(struct cphy *cphy, int wait)
102 return t3_phy_reset(cphy, 0, 0);
105 static int vsc8211_intr_enable(struct cphy *cphy)
107 return mdio_write(cphy, 0, VSC8211_INTR_ENABLE, INTR_MASK);
110 static int vsc8211_intr_disable(struct cphy *cphy)
112 return mdio_write(cphy, 0, VSC8211_INTR_ENABLE, 0);
115 static int vsc8211_intr_clear(struct cphy *cphy)
119 /* Clear PHY interrupts by reading the register. */
120 return mdio_read(cphy, 0, VSC8211_INTR_STATUS, &val);
123 static int vsc8211_autoneg_enable(struct cphy *cphy)
125 return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE,
126 BMCR_ANENABLE | BMCR_ANRESTART);
129 static int vsc8211_autoneg_restart(struct cphy *cphy)
131 return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE,
135 static int vsc8211_get_link_status(struct cphy *cphy, int *link_ok,
136 int *speed, int *duplex, int *fc)
138 unsigned int bmcr, status, lpa, adv;
139 int err, sp = -1, dplx = -1, pause = 0;
141 err = mdio_read(cphy, 0, MII_BMCR, &bmcr);
143 err = mdio_read(cphy, 0, MII_BMSR, &status);
149 * BMSR_LSTATUS is latch-low, so if it is 0 we need to read it
150 * once more to get the current link state.
152 if (!(status & BMSR_LSTATUS))
153 err = mdio_read(cphy, 0, MII_BMSR, &status);
156 *link_ok = (status & BMSR_LSTATUS) != 0;
158 if (!(bmcr & BMCR_ANENABLE)) {
159 dplx = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
160 if (bmcr & BMCR_SPEED1000)
162 else if (bmcr & BMCR_SPEED100)
166 } else if (status & BMSR_ANEGCOMPLETE) {
167 err = mdio_read(cphy, 0, VSC8211_AUX_CTRL_STAT, &status);
171 dplx = (status & F_ACSR_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
172 sp = G_ACSR_SPEED(status);
180 if (fc && dplx == DUPLEX_FULL) {
181 err = mdio_read(cphy, 0, MII_LPA, &lpa);
183 err = mdio_read(cphy, 0, MII_ADVERTISE, &adv);
187 if (lpa & adv & ADVERTISE_PAUSE_CAP)
188 pause = PAUSE_RX | PAUSE_TX;
189 else if ((lpa & ADVERTISE_PAUSE_CAP) &&
190 (lpa & ADVERTISE_PAUSE_ASYM) &&
191 (adv & ADVERTISE_PAUSE_ASYM))
193 else if ((lpa & ADVERTISE_PAUSE_ASYM) &&
194 (adv & ADVERTISE_PAUSE_CAP))
207 static int vsc8211_get_link_status_fiber(struct cphy *cphy, int *link_ok,
208 int *speed, int *duplex, int *fc)
210 unsigned int bmcr, status, lpa, adv;
211 int err, sp = -1, dplx = -1, pause = 0;
213 err = mdio_read(cphy, 0, MII_BMCR, &bmcr);
215 err = mdio_read(cphy, 0, MII_BMSR, &status);
221 * BMSR_LSTATUS is latch-low, so if it is 0 we need to read it
222 * once more to get the current link state.
224 if (!(status & BMSR_LSTATUS))
225 err = mdio_read(cphy, 0, MII_BMSR, &status);
228 *link_ok = (status & BMSR_LSTATUS) != 0;
230 if (!(bmcr & BMCR_ANENABLE)) {
231 dplx = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
232 if (bmcr & BMCR_SPEED1000)
234 else if (bmcr & BMCR_SPEED100)
238 } else if (status & BMSR_ANEGCOMPLETE) {
239 err = mdio_read(cphy, 0, MII_LPA, &lpa);
241 err = mdio_read(cphy, 0, MII_ADVERTISE, &adv);
245 if (adv & lpa & ADVERTISE_1000XFULL) {
248 } else if (adv & lpa & ADVERTISE_1000XHALF) {
253 if (fc && dplx == DUPLEX_FULL) {
254 if (lpa & adv & ADVERTISE_1000XPAUSE)
255 pause = PAUSE_RX | PAUSE_TX;
256 else if ((lpa & ADVERTISE_1000XPAUSE) &&
257 (adv & lpa & ADVERTISE_1000XPSE_ASYM))
259 else if ((lpa & ADVERTISE_1000XPSE_ASYM) &&
260 (adv & ADVERTISE_1000XPAUSE))
274 * Enable/disable auto MDI/MDI-X in forced link speed mode.
276 static int vsc8211_set_automdi(struct cphy *phy, int enable)
280 if ((err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 0x52b5)) != 0 ||
281 (err = mdio_write(phy, 0, 18, 0x12)) != 0 ||
282 (err = mdio_write(phy, 0, 17, enable ? 0x2803 : 0x3003)) != 0 ||
283 (err = mdio_write(phy, 0, 16, 0x87fa)) != 0 ||
284 (err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 0)) != 0)
289 static int vsc8211_set_speed_duplex(struct cphy *phy, int speed, int duplex)
293 err = t3_set_phy_speed_duplex(phy, speed, duplex);
295 err = vsc8211_set_automdi(phy, 1);
299 static int vsc8211_power_down(struct cphy *cphy, int enable)
301 return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN,
302 enable ? BMCR_PDOWN : 0);
305 static int vsc8211_intr_handler(struct cphy *cphy)
308 int err, cphy_cause = 0;
310 err = mdio_read(cphy, 0, VSC8211_INTR_STATUS, &cause);
315 if (cause & CFG_CHG_INTR_MASK)
316 cphy_cause |= cphy_cause_link_change;
317 if (cause & (VSC_INTR_RX_FIFO | VSC_INTR_TX_FIFO))
318 cphy_cause |= cphy_cause_fifo_error;
322 #ifdef C99_NOT_SUPPORTED
323 static struct cphy_ops vsc8211_ops = {
326 vsc8211_intr_disable,
328 vsc8211_intr_handler,
329 vsc8211_autoneg_enable,
330 vsc8211_autoneg_restart,
333 vsc8211_set_speed_duplex,
334 vsc8211_get_link_status,
338 static struct cphy_ops vsc8211_fiber_ops = {
341 vsc8211_intr_disable,
343 vsc8211_intr_handler,
344 vsc8211_autoneg_enable,
345 vsc8211_autoneg_restart,
346 t3_phy_advertise_fiber,
348 t3_set_phy_speed_duplex,
349 vsc8211_get_link_status_fiber,
353 static struct cphy_ops vsc8211_ops = {
354 .reset = vsc8211_reset,
355 .intr_enable = vsc8211_intr_enable,
356 .intr_disable = vsc8211_intr_disable,
357 .intr_clear = vsc8211_intr_clear,
358 .intr_handler = vsc8211_intr_handler,
359 .autoneg_enable = vsc8211_autoneg_enable,
360 .autoneg_restart = vsc8211_autoneg_restart,
361 .advertise = t3_phy_advertise,
362 .set_speed_duplex = vsc8211_set_speed_duplex,
363 .get_link_status = vsc8211_get_link_status,
364 .power_down = vsc8211_power_down,
367 static struct cphy_ops vsc8211_fiber_ops = {
368 .reset = vsc8211_reset,
369 .intr_enable = vsc8211_intr_enable,
370 .intr_disable = vsc8211_intr_disable,
371 .intr_clear = vsc8211_intr_clear,
372 .intr_handler = vsc8211_intr_handler,
373 .autoneg_enable = vsc8211_autoneg_enable,
374 .autoneg_restart = vsc8211_autoneg_restart,
375 .advertise = t3_phy_advertise_fiber,
376 .set_speed_duplex = t3_set_phy_speed_duplex,
377 .get_link_status = vsc8211_get_link_status_fiber,
378 .power_down = vsc8211_power_down,
382 int t3_vsc8211_phy_prep(struct cphy *phy, adapter_t *adapter, int phy_addr,
383 const struct mdio_ops *mdio_ops)
388 cphy_init(phy, adapter, phy_addr, &vsc8211_ops, mdio_ops,
389 SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full |
390 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_MII |
391 SUPPORTED_TP | SUPPORTED_IRQ, "10/100/1000BASE-T");
392 msleep(20); /* PHY needs ~10ms to start responding to MDIO */
394 err = mdio_read(phy, 0, VSC8211_EXT_CTRL, &val);
397 if (val & VSC_CTRL_MEDIA_MODE_HI) {
398 /* copper interface, just need to configure the LEDs */
399 return mdio_write(phy, 0, VSC8211_LED_CTRL, 0x100);
402 phy->caps = SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
403 SUPPORTED_MII | SUPPORTED_FIBRE | SUPPORTED_IRQ;
404 phy->desc = "1000BASE-X";
405 phy->ops = &vsc8211_fiber_ops;
407 if ((err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 1)) != 0 ||
408 (err = mdio_write(phy, 0, VSC8211_SIGDET_CTRL, 1)) != 0 ||
409 (err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 0)) != 0 ||
410 (err = mdio_write(phy, 0, VSC8211_EXT_CTRL,
411 val | VSC_CTRL_CLAUSE37_VIEW)) != 0 ||
412 (err = vsc8211_reset(phy, 0)) != 0)
415 udelay(5); /* delay after reset before next SMI */