2 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
3 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <asm/immap.h>
30 #include <asm/fsl_mcdmafec.h>
32 DECLARE_GLOBAL_DATA_PTR;
34 #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
38 int fecpin_setclear(struct eth_device *dev, int setclear)
40 volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
41 struct fec_info_dma *info = (struct fec_info_dma *)dev->priv;
44 if (info->iobase == CFG_FEC0_IOBASE)
45 gpio->par_feci2cirq |= 0xF000;
47 gpio->par_feci2cirq |= 0x0FC0;
49 if (info->iobase == CFG_FEC0_IOBASE)
50 gpio->par_feci2cirq &= 0x0FFF;
52 gpio->par_feci2cirq &= 0xF03F;
57 #if defined(CFG_DISCOVER_PHY) || defined(CONFIG_CMD_MII)
60 /* Make MII read/write commands for the FEC. */
61 #define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | (REG & 0x1f) << 18))
63 #define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | (REG & 0x1f) << 18) | (VAL & 0xffff))
65 /* PHY identification */
66 #define PHY_ID_LXT970 0x78100000 /* LXT970 */
67 #define PHY_ID_LXT971 0x001378e0 /* LXT971 and 972 */
68 #define PHY_ID_82555 0x02a80150 /* Intel 82555 */
69 #define PHY_ID_QS6612 0x01814400 /* QS6612 */
70 #define PHY_ID_AMD79C784 0x00225610 /* AMD 79C784 */
71 #define PHY_ID_LSI80225 0x0016f870 /* LSI 80225 */
72 #define PHY_ID_LSI80225B 0x0016f880 /* LSI 80225/B */
73 #define PHY_ID_DP83848VV 0x20005C90 /* National 83848 */
74 #define PHY_ID_DP83849 0x20005CA2 /* National 82849 */
75 #define PHY_ID_BCM5222 0x00406322 /* Broadcom 5222 */
77 #define STR_ID_LXT970 "LXT970"
78 #define STR_ID_LXT971 "LXT971"
79 #define STR_ID_82555 "Intel82555"
80 #define STR_ID_QS6612 "QS6612"
81 #define STR_ID_AMD79C784 "AMD79C784"
82 #define STR_ID_LSI80225 "LSI80225"
83 #define STR_ID_LSI80225B "LSI80225/B"
84 #define STR_ID_DP83848VV "N83848"
85 #define STR_ID_DP83849 "N83849"
86 #define STR_ID_BCM5222 "BCM5222"
88 /****************************************************************************
89 * mii_init -- Initialize the MII for MII command without ethernet
90 * This function is a subset of eth_init
91 ****************************************************************************
93 void mii_reset(struct fec_info_dma *info)
95 volatile fecdma_t *fecp = (fecdma_t *) (info->miibase);
98 fecp->ecr = FEC_ECR_RESET;
99 for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) {
102 if (i == FEC_RESET_DELAY) {
103 printf("FEC_RESET_DELAY timeout\n");
107 /* send command to phy using mii, wait for result */
108 uint mii_send(uint mii_cmd)
110 struct fec_info_dma *info;
111 struct eth_device *dev;
112 volatile fecdma_t *ep;
116 /* retrieve from register structure */
120 ep = (fecdma_t *) info->miibase;
122 ep->mmfr = mii_cmd; /* command to phy */
124 /* wait for mii complete */
125 while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) {
129 if (j >= MCFFEC_TOUT_LOOP) {
130 printf("MII not complete\n");
134 mii_reply = ep->mmfr; /* result from phy */
135 ep->eir = FEC_EIR_MII; /* clear MII complete */
137 printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
138 __FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply);
141 return (mii_reply & 0xffff); /* data read from phy */
143 #endif /* CFG_DISCOVER_PHY || CONFIG_CMD_MII */
145 #if defined(CFG_DISCOVER_PHY)
146 int mii_discover_phy(struct eth_device *dev)
148 #define MAX_PHY_PASSES 11
149 struct fec_info_dma *info = dev->priv;
150 int phyaddr, pass, temp;
153 if (info->phyname_init) {
154 return info->phy_addr;
157 phyaddr = -1; /* didn't find a PHY yet */
158 for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
160 /* PHY may need more time to recover from reset.
161 * The LXT970 needs 50ms typical, no maximum is
162 * specified, so wait 10ms before try again.
163 * With 11 passes this gives it 100ms to wake up.
165 udelay(10000); /* wait 10ms */
169 if (info->index > 0) {
170 /* Some phy have multiple address, to solve the issue
171 where phyno keeps starting from 0, check the
172 previous phy address if both miibase are the same. */
173 if (info->miibase == (info->next)->miibase) {
174 temp = (info->next)->phy_addr + 1;
178 for (phyno = temp; phyno < 32 && phyaddr < 0; ++phyno) {
180 phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR1));
182 printf("PHY type 0x%x pass %d type\n", phytype, pass);
184 if (phytype != 0xffff) {
188 mii_send(mk_mii_read(phyno, PHY_PHYIDR2));
190 switch (phytype & 0xffffffff) {
192 strcpy(info->phy_name, STR_ID_BCM5222);
193 info->phyname_init = 1;
196 strcpy(info->phy_name, "unknown");
197 info->phyname_init = 1;
202 printf("PHY @ 0x%x pass %d type ", phyno, pass);
203 switch (phytype & 0xffffffff) {
205 printf(STR_ID_BCM5222);
208 printf("0x%08x\n", phytype);
216 printf("No PHY device found.\n");
220 #endif /* CFG_DISCOVER_PHY */
222 void mii_init(void) __attribute__ ((weak, alias("__mii_init")));
224 void __mii_init(void)
226 volatile fecdma_t *fecp;
227 struct fec_info_dma *info;
228 struct eth_device *dev;
229 int miispd = 0, i = 0;
232 /* retrieve from register structure */
236 fecp = (fecdma_t *) info->miibase;
238 fecpin_setclear(dev, 1);
242 /* We use strictly polling mode only */
245 /* Clear any pending interrupt */
246 fecp->eir = 0xffffffff;
249 miispd = (gd->bus_clk / 1000000) / 5;
250 fecp->mscr = miispd << 1;
252 info->phy_addr = mii_discover_phy(dev);
254 #define AUTONEGLINK (PHY_BMSR_AUTN_COMP | PHY_BMSR_LS)
255 while (i < MCFFEC_TOUT_LOOP) {
257 miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &autoneg);
260 if ((autoneg & AUTONEGLINK) == AUTONEGLINK)
265 if (i >= MCFFEC_TOUT_LOOP) {
266 printf("Auto Negotiation not complete\n");
269 /* adapt to the half/full speed settings */
270 info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16;
271 info->dup_spd |= miiphy_speed(dev->name, info->phy_addr);
274 /*****************************************************************************
275 * Read and write a MII PHY register, routines used by MII Utilities
277 * FIXME: These routines are expected to return 0 on success, but mii_send
278 * does _not_ return an error code. Maybe 0xFFFF means error, i.e.
279 * no PHY connected...
280 * For now always return 0.
281 * FIXME: These routines only work after calling eth_init() at least once!
282 * Otherwise they hang in mii_send() !!! Sorry!
283 *****************************************************************************/
285 int mcffec_miiphy_read(char *devname, unsigned char addr, unsigned char reg,
286 unsigned short *value)
288 short rdreg; /* register working value */
291 printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
293 rdreg = mii_send(mk_mii_read(addr, reg));
298 printf("0x%04x\n", *value);
304 int mcffec_miiphy_write(char *devname, unsigned char addr, unsigned char reg,
305 unsigned short value)
307 short rdreg; /* register working value */
310 printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
313 rdreg = mii_send(mk_mii_write(addr, reg, value));
316 printf("0x%04x\n", value);
322 #endif /* CONFIG_CMD_NET, FEC_ENET & NET_MULTI */