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54bdcc9f TL |
1 | /* |
2 | * Copyright (C) 2004-2008 Freescale Semiconductor, Inc. | |
3 | * TsiChung Liew ([email protected]) | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <config.h> | |
26 | #include <net.h> | |
27 | #include <netdev.h> | |
28 | ||
29 | #ifdef CONFIG_MCF547x_8x | |
30 | #include <asm/fsl_mcdmafec.h> | |
31 | #else | |
32 | #include <asm/fec.h> | |
33 | #endif | |
34 | #include <asm/immap.h> | |
35 | ||
36 | DECLARE_GLOBAL_DATA_PTR; | |
37 | ||
e2a53458 | 38 | #if defined(CONFIG_CMD_NET) |
54bdcc9f TL |
39 | #undef MII_DEBUG |
40 | #undef ET_DEBUG | |
41 | ||
42 | /*extern int fecpin_setclear(struct eth_device *dev, int setclear);*/ | |
43 | ||
44 | #if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_CMD_MII) | |
45 | #include <miiphy.h> | |
46 | ||
47 | /* Make MII read/write commands for the FEC. */ | |
48 | #define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \ | |
49 | (REG & 0x1f) << 18)) | |
50 | #define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \ | |
51 | (REG & 0x1f) << 18) | (VAL & 0xffff)) | |
52 | ||
53 | #ifndef CONFIG_SYS_UNSPEC_PHYID | |
54 | # define CONFIG_SYS_UNSPEC_PHYID 0 | |
55 | #endif | |
56 | #ifndef CONFIG_SYS_UNSPEC_STRID | |
57 | # define CONFIG_SYS_UNSPEC_STRID 0 | |
58 | #endif | |
59 | ||
60 | #ifdef CONFIG_MCF547x_8x | |
61 | typedef struct fec_info_dma FEC_INFO_T; | |
62 | #define FEC_T fecdma_t | |
63 | #else | |
64 | typedef struct fec_info_s FEC_INFO_T; | |
65 | #define FEC_T fec_t | |
66 | #endif | |
67 | ||
68 | typedef struct phy_info_struct { | |
69 | u32 phyid; | |
70 | char *strid; | |
71 | } phy_info_t; | |
72 | ||
73 | phy_info_t phyinfo[] = { | |
74 | {0x0022561B, "AMD79C784VC"}, /* AMD 79C784VC */ | |
75 | {0x00406322, "BCM5222"}, /* Broadcom 5222 */ | |
76 | {0x02a80150, "Intel82555"}, /* Intel 82555 */ | |
77 | {0x0016f870, "LSI80225"}, /* LSI 80225 */ | |
78 | {0x0016f880, "LSI80225/B"}, /* LSI 80225/B */ | |
79 | {0x78100000, "LXT970"}, /* LXT970 */ | |
80 | {0x001378e0, "LXT971"}, /* LXT971 and 972 */ | |
81 | {0x00221619, "KS8721BL"}, /* Micrel KS8721BL/SL */ | |
82 | {0x00221512, "KSZ8041NL"}, /* Micrel KSZ8041NL */ | |
83 | {0x20005CE1, "N83640"}, /* National 83640 */ | |
84 | {0x20005C90, "N83848"}, /* National 83848 */ | |
85 | {0x20005CA2, "N83849"}, /* National 83849 */ | |
86 | {0x01814400, "QS6612"}, /* QS6612 */ | |
87 | #if defined(CONFIG_SYS_UNSPEC_PHYID) && defined(CONFIG_SYS_UNSPEC_STRID) | |
88 | {CONFIG_SYS_UNSPEC_PHYID, CONFIG_SYS_UNSPEC_STRID}, | |
89 | #endif | |
90 | {0, 0} | |
91 | }; | |
92 | ||
93 | /* | |
94 | * mii_init -- Initialize the MII for MII command without ethernet | |
95 | * This function is a subset of eth_init | |
96 | */ | |
97 | void mii_reset(FEC_INFO_T *info) | |
98 | { | |
99 | volatile FEC_T *fecp = (FEC_T *) (info->miibase); | |
100 | int i; | |
101 | ||
102 | fecp->ecr = FEC_ECR_RESET; | |
103 | ||
104 | for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) { | |
105 | udelay(1); | |
106 | } | |
107 | if (i == FEC_RESET_DELAY) | |
108 | printf("FEC_RESET_DELAY timeout\n"); | |
109 | } | |
110 | ||
111 | /* send command to phy using mii, wait for result */ | |
112 | uint mii_send(uint mii_cmd) | |
113 | { | |
114 | FEC_INFO_T *info; | |
115 | volatile FEC_T *ep; | |
116 | struct eth_device *dev; | |
117 | uint mii_reply; | |
118 | int j = 0; | |
119 | ||
120 | /* retrieve from register structure */ | |
121 | dev = eth_get_dev(); | |
122 | info = dev->priv; | |
123 | ||
124 | ep = (FEC_T *) info->miibase; | |
125 | ||
126 | ep->mmfr = mii_cmd; /* command to phy */ | |
127 | ||
128 | /* wait for mii complete */ | |
129 | while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) { | |
130 | udelay(1); | |
131 | j++; | |
132 | } | |
133 | if (j >= MCFFEC_TOUT_LOOP) { | |
134 | printf("MII not complete\n"); | |
135 | return -1; | |
136 | } | |
137 | ||
138 | mii_reply = ep->mmfr; /* result from phy */ | |
139 | ep->eir = FEC_EIR_MII; /* clear MII complete */ | |
140 | #ifdef ET_DEBUG | |
141 | printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n", | |
142 | __FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply); | |
143 | #endif | |
144 | ||
145 | return (mii_reply & 0xffff); /* data read from phy */ | |
146 | } | |
147 | #endif /* CONFIG_SYS_DISCOVER_PHY || (CONFIG_MII) */ | |
148 | ||
149 | #if defined(CONFIG_SYS_DISCOVER_PHY) | |
150 | int mii_discover_phy(struct eth_device *dev) | |
151 | { | |
152 | #define MAX_PHY_PASSES 11 | |
153 | FEC_INFO_T *info = dev->priv; | |
154 | int phyaddr, pass; | |
155 | uint phyno, phytype; | |
156 | int i, found = 0; | |
157 | ||
158 | if (info->phyname_init) | |
159 | return info->phy_addr; | |
160 | ||
161 | phyaddr = -1; /* didn't find a PHY yet */ | |
162 | for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) { | |
163 | if (pass > 1) { | |
164 | /* PHY may need more time to recover from reset. | |
165 | * The LXT970 needs 50ms typical, no maximum is | |
166 | * specified, so wait 10ms before try again. | |
167 | * With 11 passes this gives it 100ms to wake up. | |
168 | */ | |
169 | udelay(10000); /* wait 10ms */ | |
170 | } | |
171 | ||
172 | for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) { | |
173 | ||
8ef583a0 | 174 | phytype = mii_send(mk_mii_read(phyno, MII_PHYSID1)); |
54bdcc9f TL |
175 | #ifdef ET_DEBUG |
176 | printf("PHY type 0x%x pass %d type\n", phytype, pass); | |
177 | #endif | |
33f684d6 WW |
178 | if (phytype == 0xffff) |
179 | continue; | |
180 | phyaddr = phyno; | |
181 | phytype <<= 16; | |
182 | phytype |= | |
8ef583a0 | 183 | mii_send(mk_mii_read(phyno, MII_PHYSID2)); |
54bdcc9f TL |
184 | |
185 | #ifdef ET_DEBUG | |
33f684d6 | 186 | printf("PHY @ 0x%x pass %d\n", phyno, pass); |
54bdcc9f TL |
187 | #endif |
188 | ||
33f684d6 WW |
189 | for (i = 0; (i < (sizeof(phyinfo) / sizeof(phy_info_t))) |
190 | && (phyinfo[i].phyid != 0); i++) { | |
191 | if (phyinfo[i].phyid == phytype) { | |
54bdcc9f | 192 | #ifdef ET_DEBUG |
33f684d6 WW |
193 | printf("phyid %x - %s\n", |
194 | phyinfo[i].phyid, | |
195 | phyinfo[i].strid); | |
54bdcc9f | 196 | #endif |
33f684d6 WW |
197 | strcpy(info->phy_name, phyinfo[i].strid); |
198 | info->phyname_init = 1; | |
199 | found = 1; | |
200 | break; | |
54bdcc9f | 201 | } |
33f684d6 | 202 | } |
54bdcc9f | 203 | |
33f684d6 | 204 | if (!found) { |
54bdcc9f | 205 | #ifdef ET_DEBUG |
33f684d6 | 206 | printf("0x%08x\n", phytype); |
54bdcc9f | 207 | #endif |
33f684d6 WW |
208 | strcpy(info->phy_name, "unknown"); |
209 | info->phyname_init = 1; | |
210 | break; | |
54bdcc9f TL |
211 | } |
212 | } | |
213 | } | |
214 | ||
215 | if (phyaddr < 0) | |
216 | printf("No PHY device found.\n"); | |
217 | ||
218 | return phyaddr; | |
219 | } | |
220 | #endif /* CONFIG_SYS_DISCOVER_PHY */ | |
221 | ||
222 | void mii_init(void) __attribute__((weak,alias("__mii_init"))); | |
223 | ||
224 | void __mii_init(void) | |
225 | { | |
226 | FEC_INFO_T *info; | |
227 | volatile FEC_T *fecp; | |
228 | struct eth_device *dev; | |
229 | int miispd = 0, i = 0; | |
c4ff77f5 RR |
230 | u16 status = 0; |
231 | u16 linkgood = 0; | |
54bdcc9f TL |
232 | |
233 | /* retrieve from register structure */ | |
234 | dev = eth_get_dev(); | |
235 | info = dev->priv; | |
236 | ||
237 | fecp = (FEC_T *) info->miibase; | |
238 | ||
239 | fecpin_setclear(dev, 1); | |
240 | ||
241 | mii_reset(info); | |
242 | ||
243 | /* We use strictly polling mode only */ | |
244 | fecp->eimr = 0; | |
245 | ||
246 | /* Clear any pending interrupt */ | |
247 | fecp->eir = 0xffffffff; | |
248 | ||
249 | /* Set MII speed */ | |
250 | miispd = (gd->bus_clk / 1000000) / 5; | |
251 | fecp->mscr = miispd << 1; | |
252 | ||
253 | info->phy_addr = mii_discover_phy(dev); | |
254 | ||
54bdcc9f | 255 | while (i < MCFFEC_TOUT_LOOP) { |
c4ff77f5 | 256 | status = 0; |
54bdcc9f | 257 | i++; |
c4ff77f5 | 258 | /* Read PHY control register */ |
8ef583a0 | 259 | miiphy_read(dev->name, info->phy_addr, MII_BMCR, &status); |
c4ff77f5 RR |
260 | |
261 | /* If phy set to autonegotiate, wait for autonegotiation done, | |
262 | * if phy is not autonegotiating, just wait for link up. | |
263 | */ | |
8ef583a0 MF |
264 | if ((status & BMCR_ANENABLE) == BMCR_ANENABLE) { |
265 | linkgood = (BMSR_ANEGCOMPLETE | BMSR_LSTATUS); | |
c4ff77f5 | 266 | } else { |
8ef583a0 | 267 | linkgood = BMSR_LSTATUS; |
c4ff77f5 RR |
268 | } |
269 | /* Read PHY status register */ | |
8ef583a0 | 270 | miiphy_read(dev->name, info->phy_addr, MII_BMSR, &status); |
c4ff77f5 | 271 | if ((status & linkgood) == linkgood) |
54bdcc9f TL |
272 | break; |
273 | ||
44578bea | 274 | udelay(1); |
54bdcc9f TL |
275 | } |
276 | if (i >= MCFFEC_TOUT_LOOP) { | |
c4ff77f5 | 277 | printf("Link UP timeout\n"); |
54bdcc9f TL |
278 | } |
279 | ||
c4ff77f5 | 280 | /* adapt to the duplex and speed settings of the phy */ |
54bdcc9f TL |
281 | info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16; |
282 | info->dup_spd |= miiphy_speed(dev->name, info->phy_addr); | |
283 | } | |
284 | ||
285 | /* | |
286 | * Read and write a MII PHY register, routines used by MII Utilities | |
287 | * | |
288 | * FIXME: These routines are expected to return 0 on success, but mii_send | |
289 | * does _not_ return an error code. Maybe 0xFFFF means error, i.e. | |
290 | * no PHY connected... | |
291 | * For now always return 0. | |
292 | * FIXME: These routines only work after calling eth_init() at least once! | |
293 | * Otherwise they hang in mii_send() !!! Sorry! | |
294 | */ | |
295 | ||
5700bb63 | 296 | int mcffec_miiphy_read(const char *devname, unsigned char addr, unsigned char reg, |
54bdcc9f TL |
297 | unsigned short *value) |
298 | { | |
299 | short rdreg; /* register working value */ | |
300 | ||
301 | #ifdef MII_DEBUG | |
302 | printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr); | |
303 | #endif | |
304 | rdreg = mii_send(mk_mii_read(addr, reg)); | |
305 | ||
306 | *value = rdreg; | |
307 | ||
308 | #ifdef MII_DEBUG | |
309 | printf("0x%04x\n", *value); | |
310 | #endif | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
5700bb63 | 315 | int mcffec_miiphy_write(const char *devname, unsigned char addr, unsigned char reg, |
54bdcc9f TL |
316 | unsigned short value) |
317 | { | |
318 | short rdreg; /* register working value */ | |
319 | ||
320 | #ifdef MII_DEBUG | |
321 | printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr); | |
322 | #endif | |
323 | ||
324 | rdreg = mii_send(mk_mii_write(addr, reg, value)); | |
325 | ||
326 | #ifdef MII_DEBUG | |
327 | printf("0x%04x\n", value); | |
328 | #endif | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
e2a53458 | 333 | #endif /* CONFIG_CMD_NET */ |