1 /*-----------------------------------------------------------------------------+
3 | This source code has been made available to you by IBM on an AS-IS
4 | basis. Anyone receiving this source is licensed under IBM
5 | copyrights to use it in any way he or she deems fit, including
6 | copying it, modifying it, compiling it, and redistributing it either
7 | with or without modifications. No license under IBM patents or
8 | patent applications is to be implied by the copyright license.
10 | Any user of this software should understand that IBM cannot provide
11 | technical support for this software and will not be responsible for
12 | any consequences resulting from the use of this software.
14 | Any person who transfers this source code or any derivative work
15 | must include the IBM copyright notice, this paragraph, and the
16 | preceding two paragraphs in the transferred software.
18 | COPYRIGHT I B M CORPORATION 1995
19 | LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
20 +-----------------------------------------------------------------------------*/
21 /*-----------------------------------------------------------------------------+
25 | Function: This module has utilities for accessing the MII PHY through
32 | Date Description of Change BY
33 | --------- --------------------- ---
34 | 05-May-99 Created MKW
35 | 01-Jul-99 Changed clock setting of sta_reg from 66Mhz to 50Mhz to
36 | better match OPB speed. Also modified delay times. JWB
37 | 29-Jul-99 Added Full duplex support MKW
38 | 24-Aug-99 Removed printf from dp83843_duplex() JWB
39 | 19-Jul-00 Ported to esd cpci405 sr
40 | 23-Dec-03 Ported from miiphy.c to 440GX Travis Sawyer TBS
41 | <travis.sawyer@sandburst.com>
43 +-----------------------------------------------------------------------------*/
46 #include <asm/processor.h>
47 #include <ppc_asm.tmpl>
49 #include <ppc4xx_enet.h>
54 /***********************************************************/
55 /* Dump out to the screen PHY regs */
56 /***********************************************************/
58 void miiphy_dump (char *devname, unsigned char addr)
64 for (i = 0; i < 0x1A; i++) {
65 if (miiphy_read (devname, addr, i, &data)) {
66 printf ("read error for reg %lx\n", i);
69 printf ("Phy reg %lx ==> %4x\n", i, data);
71 /* jump to the next set of regs */
79 /***********************************************************/
80 /* (Re)start autonegotiation */
81 /***********************************************************/
82 int phy_setup_aneg (char *devname, unsigned char addr)
84 unsigned short ctl, adv;
86 /* Setup standard advertise */
87 miiphy_read (devname, addr, PHY_ANAR, &adv);
88 adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_RF | PHY_ANLPAR_T4 |
89 PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD |
91 miiphy_write (devname, addr, PHY_ANAR, adv);
93 miiphy_read (devname, addr, PHY_1000BTCR, &adv);
95 miiphy_write (devname, addr, PHY_1000BTCR, adv);
97 /* Start/Restart aneg */
98 miiphy_read (devname, addr, PHY_BMCR, &ctl);
99 ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
100 miiphy_write (devname, addr, PHY_BMCR, ctl);
106 /***********************************************************/
107 /* read a phy reg and return the value with a rc */
108 /***********************************************************/
109 unsigned int miiphy_getemac_offset (void)
111 #if (defined(CONFIG_440) && !defined(CONFIG_440SP) && !defined(CONFIG_440SPE)) && defined(CONFIG_NET_MULTI)
113 unsigned long eoffset;
115 /* Need to find out which mdi port we're using */
116 zmii = in32 (ZMII_FER);
118 if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0))) {
121 } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (1))) {
124 } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (2))) {
127 } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3))) {
131 /* None of the mdi ports are enabled! */
133 zmii |= ZMII_FER_MDI << ZMII_FER_V (0);
134 out32 (ZMII_FER, zmii);
136 /* need to soft reset port 0 */
137 zmii = in32 (EMAC_M0);
138 zmii |= EMAC_M0_SRST;
139 out32 (EMAC_M0, zmii);
149 int emac4xx_miiphy_read (char *devname, unsigned char addr,
150 unsigned char reg, unsigned short *value)
152 unsigned long sta_reg; /* STA scratch area */
154 unsigned long emac_reg;
157 emac_reg = miiphy_getemac_offset ();
158 /* see if it is ready for 1000 nsec */
161 /* see if it is ready for sec */
162 while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
166 sta_reg = in32 (EMAC_STACR + emac_reg);
167 printf ("read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
168 printf ("read err 1\n");
174 sta_reg = reg; /* reg address */
175 /* set clock (50Mhz) and read flags */
176 #if defined(CONFIG_440GX) || defined(CONFIG_440SPE)
177 #if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
178 sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | EMAC_STACR_READ;
180 sta_reg |= EMAC_STACR_READ;
183 sta_reg = (sta_reg | EMAC_STACR_READ) & ~EMAC_STACR_CLK_100MHZ;
186 #if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440GX) && !defined(CONFIG__440SP) && !defined(CONFIG__440SPE)
187 sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ;
189 sta_reg = sta_reg | (addr << 5); /* Phy address */
190 sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
191 out32 (EMAC_STACR + emac_reg, sta_reg);
193 printf ("a2: write: EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
196 sta_reg = in32 (EMAC_STACR + emac_reg);
198 printf ("a21: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
201 while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
207 sta_reg = in32 (EMAC_STACR + emac_reg);
209 printf ("a22: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
212 if ((sta_reg & EMAC_STACR_PHYE) != 0) {
216 *value = *(short *) (&sta_reg);
223 /***********************************************************/
224 /* write a phy reg and return the value with a rc */
225 /***********************************************************/
227 int emac4xx_miiphy_write (char *devname, unsigned char addr,
228 unsigned char reg, unsigned short value)
230 unsigned long sta_reg; /* STA scratch area */
232 unsigned long emac_reg;
234 emac_reg = miiphy_getemac_offset ();
235 /* see if it is ready for 1000 nsec */
238 while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
245 sta_reg = reg; /* reg address */
246 /* set clock (50Mhz) and read flags */
247 #if defined(CONFIG_440GX) || defined(CONFIG_440SPE)
248 #if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
249 sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | EMAC_STACR_WRITE;
251 sta_reg |= EMAC_STACR_WRITE;
254 sta_reg = (sta_reg | EMAC_STACR_WRITE) & ~EMAC_STACR_CLK_100MHZ;
257 #if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440GX) && !defined(CONFIG__440SP) && !defined(CONFIG__440SPE)
258 sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; /* Set clock frequency (PLB freq. dependend) */
260 sta_reg = sta_reg | ((unsigned long) addr << 5);/* Phy address */
261 sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
262 memcpy (&sta_reg, &value, 2); /* put in data */
264 out32 (EMAC_STACR + emac_reg, sta_reg);
266 /* wait for completion */
268 sta_reg = in32 (EMAC_STACR + emac_reg);
270 printf ("a31: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
272 while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
277 sta_reg = in32 (EMAC_STACR + emac_reg);
279 printf ("a32: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
283 if ((sta_reg & EMAC_STACR_PHYE) != 0)