Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | drivers/net/tulip/eeprom.c | |
3 | ||
6b92801b | 4 | Maintained by Valerie Henson <val_henson@linux.intel.com> |
1da177e4 LT |
5 | Copyright 2000,2001 The Linux Kernel Team |
6 | Written/copyright 1994-2001 by Donald Becker. | |
7 | ||
8 | This software may be used and distributed according to the terms | |
9 | of the GNU General Public License, incorporated herein by reference. | |
10 | ||
11 | Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html} | |
12 | for more information on this driver, or visit the project | |
13 | Web page at http://sourceforge.net/projects/tulip/ | |
14 | ||
15 | */ | |
16 | ||
17 | #include <linux/pci.h> | |
18 | #include "tulip.h" | |
19 | #include <linux/init.h> | |
20 | #include <asm/unaligned.h> | |
21 | ||
22 | ||
23 | ||
24 | /* Serial EEPROM section. */ | |
25 | /* The main routine to parse the very complicated SROM structure. | |
26 | Search www.digital.com for "21X4 SROM" to get details. | |
27 | This code is very complex, and will require changes to support | |
28 | additional cards, so I'll be verbose about what is going on. | |
29 | */ | |
30 | ||
31 | /* Known cards that have old-style EEPROMs. */ | |
32 | static struct eeprom_fixup eeprom_fixups[] __devinitdata = { | |
33 | {"Asante", 0, 0, 0x94, {0x1e00, 0x0000, 0x0800, 0x0100, 0x018c, | |
34 | 0x0000, 0x0000, 0xe078, 0x0001, 0x0050, 0x0018 }}, | |
35 | {"SMC9332DST", 0, 0, 0xC0, { 0x1e00, 0x0000, 0x0800, 0x041f, | |
36 | 0x0000, 0x009E, /* 10baseT */ | |
37 | 0x0004, 0x009E, /* 10baseT-FD */ | |
38 | 0x0903, 0x006D, /* 100baseTx */ | |
39 | 0x0905, 0x006D, /* 100baseTx-FD */ }}, | |
40 | {"Cogent EM100", 0, 0, 0x92, { 0x1e00, 0x0000, 0x0800, 0x063f, | |
41 | 0x0107, 0x8021, /* 100baseFx */ | |
42 | 0x0108, 0x8021, /* 100baseFx-FD */ | |
43 | 0x0100, 0x009E, /* 10baseT */ | |
44 | 0x0104, 0x009E, /* 10baseT-FD */ | |
45 | 0x0103, 0x006D, /* 100baseTx */ | |
46 | 0x0105, 0x006D, /* 100baseTx-FD */ }}, | |
47 | {"Maxtech NX-110", 0, 0, 0xE8, { 0x1e00, 0x0000, 0x0800, 0x0513, | |
48 | 0x1001, 0x009E, /* 10base2, CSR12 0x10*/ | |
49 | 0x0000, 0x009E, /* 10baseT */ | |
50 | 0x0004, 0x009E, /* 10baseT-FD */ | |
51 | 0x0303, 0x006D, /* 100baseTx, CSR12 0x03 */ | |
52 | 0x0305, 0x006D, /* 100baseTx-FD CSR12 0x03 */}}, | |
53 | {"Accton EN1207", 0, 0, 0xE8, { 0x1e00, 0x0000, 0x0800, 0x051F, | |
54 | 0x1B01, 0x0000, /* 10base2, CSR12 0x1B */ | |
55 | 0x0B00, 0x009E, /* 10baseT, CSR12 0x0B */ | |
56 | 0x0B04, 0x009E, /* 10baseT-FD,CSR12 0x0B */ | |
57 | 0x1B03, 0x006D, /* 100baseTx, CSR12 0x1B */ | |
58 | 0x1B05, 0x006D, /* 100baseTx-FD CSR12 0x1B */ | |
59 | }}, | |
60 | {"NetWinder", 0x00, 0x10, 0x57, | |
61 | /* Default media = MII | |
62 | * MII block, reset sequence (3) = 0x0821 0x0000 0x0001, capabilities 0x01e1 | |
63 | */ | |
64 | { 0x1e00, 0x0000, 0x000b, 0x8f01, 0x0103, 0x0300, 0x0821, 0x000, 0x0001, 0x0000, 0x01e1 } | |
65 | }, | |
12755c16 RB |
66 | {"Cobalt Microserver", 0, 0x10, 0xE0, {0x1e00, /* 0 == controller #, 1e == offset */ |
67 | 0x0000, /* 0 == high offset, 0 == gap */ | |
68 | 0x0800, /* Default Autoselect */ | |
69 | 0x8001, /* 1 leaf, extended type, bogus len */ | |
70 | 0x0003, /* Type 3 (MII), PHY #0 */ | |
71 | 0x0400, /* 0 init instr, 4 reset instr */ | |
72 | 0x0801, /* Set control mode, GP0 output */ | |
73 | 0x0000, /* Drive GP0 Low (RST is active low) */ | |
74 | 0x0800, /* control mode, GP0 input (undriven) */ | |
75 | 0x0000, /* clear control mode */ | |
76 | 0x7800, /* 100TX FDX + HDX, 10bT FDX + HDX */ | |
77 | 0x01e0, /* Advertise all above */ | |
78 | 0x5000, /* FDX all above */ | |
79 | 0x1800, /* Set fast TTM in 100bt modes */ | |
80 | 0x0000, /* PHY cannot be unplugged */ | |
81 | }}, | |
1da177e4 LT |
82 | {NULL}}; |
83 | ||
84 | ||
85 | static const char *block_name[] __devinitdata = { | |
86 | "21140 non-MII", | |
87 | "21140 MII PHY", | |
88 | "21142 Serial PHY", | |
89 | "21142 MII PHY", | |
90 | "21143 SYM PHY", | |
91 | "21143 reset method" | |
92 | }; | |
93 | ||
94 | ||
95 | /** | |
96 | * tulip_build_fake_mediatable - Build a fake mediatable entry. | |
97 | * @tp: Ptr to the tulip private data. | |
98 | * | |
f3b197ac | 99 | * Some cards like the 3x5 HSC cards (J3514A) do not have a standard |
1da177e4 | 100 | * srom and can not be handled under the fixup routine. These cards |
f3b197ac | 101 | * still need a valid mediatable entry for correct csr12 setup and |
1da177e4 | 102 | * mii handling. |
f3b197ac | 103 | * |
1da177e4 LT |
104 | * Since this is currently a parisc-linux specific function, the |
105 | * #ifdef __hppa__ should completely optimize this function away for | |
106 | * non-parisc hardware. | |
107 | */ | |
108 | static void __devinit tulip_build_fake_mediatable(struct tulip_private *tp) | |
109 | { | |
110 | #ifdef CONFIG_GSC | |
111 | if (tp->flags & NEEDS_FAKE_MEDIA_TABLE) { | |
112 | static unsigned char leafdata[] = | |
113 | { 0x01, /* phy number */ | |
114 | 0x02, /* gpr setup sequence length */ | |
115 | 0x02, 0x00, /* gpr setup sequence */ | |
116 | 0x02, /* phy reset sequence length */ | |
117 | 0x01, 0x00, /* phy reset sequence */ | |
118 | 0x00, 0x78, /* media capabilities */ | |
119 | 0x00, 0xe0, /* nway advertisment */ | |
120 | 0x00, 0x05, /* fdx bit map */ | |
121 | 0x00, 0x06 /* ttm bit map */ | |
122 | }; | |
123 | ||
124 | tp->mtable = (struct mediatable *) | |
125 | kmalloc(sizeof(struct mediatable) + sizeof(struct medialeaf), GFP_KERNEL); | |
126 | ||
127 | if (tp->mtable == NULL) | |
128 | return; /* Horrible, impossible failure. */ | |
129 | ||
130 | tp->mtable->defaultmedia = 0x800; | |
131 | tp->mtable->leafcount = 1; | |
132 | tp->mtable->csr12dir = 0x3f; /* inputs on bit7 for hsc-pci, bit6 for pci-fx */ | |
133 | tp->mtable->has_nonmii = 0; | |
134 | tp->mtable->has_reset = 0; | |
135 | tp->mtable->has_mii = 1; | |
136 | tp->mtable->csr15dir = tp->mtable->csr15val = 0; | |
137 | tp->mtable->mleaf[0].type = 1; | |
138 | tp->mtable->mleaf[0].media = 11; | |
139 | tp->mtable->mleaf[0].leafdata = &leafdata[0]; | |
140 | tp->flags |= HAS_PHY_IRQ; | |
141 | tp->csr12_shadow = -1; | |
142 | } | |
f3b197ac | 143 | #endif |
1da177e4 LT |
144 | } |
145 | ||
146 | void __devinit tulip_parse_eeprom(struct net_device *dev) | |
147 | { | |
148 | /* The last media info list parsed, for multiport boards. */ | |
149 | static struct mediatable *last_mediatable; | |
150 | static unsigned char *last_ee_data; | |
151 | static int controller_index; | |
152 | struct tulip_private *tp = netdev_priv(dev); | |
153 | unsigned char *ee_data = tp->eeprom; | |
154 | int i; | |
155 | ||
156 | tp->mtable = NULL; | |
157 | /* Detect an old-style (SA only) EEPROM layout: | |
158 | memcmp(eedata, eedata+16, 8). */ | |
159 | for (i = 0; i < 8; i ++) | |
160 | if (ee_data[i] != ee_data[16+i]) | |
161 | break; | |
162 | if (i >= 8) { | |
163 | if (ee_data[0] == 0xff) { | |
164 | if (last_mediatable) { | |
165 | controller_index++; | |
166 | printk(KERN_INFO "%s: Controller %d of multiport board.\n", | |
167 | dev->name, controller_index); | |
168 | tp->mtable = last_mediatable; | |
169 | ee_data = last_ee_data; | |
170 | goto subsequent_board; | |
171 | } else | |
172 | printk(KERN_INFO "%s: Missing EEPROM, this interface may " | |
173 | "not work correctly!\n", | |
174 | dev->name); | |
175 | return; | |
176 | } | |
177 | /* Do a fix-up based on the vendor half of the station address prefix. */ | |
178 | for (i = 0; eeprom_fixups[i].name; i++) { | |
179 | if (dev->dev_addr[0] == eeprom_fixups[i].addr0 | |
180 | && dev->dev_addr[1] == eeprom_fixups[i].addr1 | |
181 | && dev->dev_addr[2] == eeprom_fixups[i].addr2) { | |
182 | if (dev->dev_addr[2] == 0xE8 && ee_data[0x1a] == 0x55) | |
183 | i++; /* An Accton EN1207, not an outlaw Maxtech. */ | |
184 | memcpy(ee_data + 26, eeprom_fixups[i].newtable, | |
185 | sizeof(eeprom_fixups[i].newtable)); | |
186 | printk(KERN_INFO "%s: Old format EEPROM on '%s' board. Using" | |
187 | " substitute media control info.\n", | |
188 | dev->name, eeprom_fixups[i].name); | |
189 | break; | |
190 | } | |
191 | } | |
192 | if (eeprom_fixups[i].name == NULL) { /* No fixup found. */ | |
193 | printk(KERN_INFO "%s: Old style EEPROM with no media selection " | |
194 | "information.\n", | |
195 | dev->name); | |
196 | return; | |
197 | } | |
198 | } | |
199 | ||
200 | controller_index = 0; | |
201 | if (ee_data[19] > 1) { /* Multiport board. */ | |
202 | last_ee_data = ee_data; | |
203 | } | |
204 | subsequent_board: | |
205 | ||
206 | if (ee_data[27] == 0) { /* No valid media table. */ | |
207 | tulip_build_fake_mediatable(tp); | |
208 | } else { | |
209 | unsigned char *p = (void *)ee_data + ee_data[27]; | |
210 | unsigned char csr12dir = 0; | |
211 | int count, new_advertise = 0; | |
212 | struct mediatable *mtable; | |
213 | u16 media = get_u16(p); | |
214 | ||
215 | p += 2; | |
216 | if (tp->flags & CSR12_IN_SROM) | |
217 | csr12dir = *p++; | |
218 | count = *p++; | |
219 | ||
220 | /* there is no phy information, don't even try to build mtable */ | |
221 | if (count == 0) { | |
222 | if (tulip_debug > 0) | |
223 | printk(KERN_WARNING "%s: no phy info, aborting mtable build\n", dev->name); | |
224 | return; | |
225 | } | |
226 | ||
227 | mtable = (struct mediatable *) | |
228 | kmalloc(sizeof(struct mediatable) + count*sizeof(struct medialeaf), | |
229 | GFP_KERNEL); | |
230 | if (mtable == NULL) | |
231 | return; /* Horrible, impossible failure. */ | |
232 | last_mediatable = tp->mtable = mtable; | |
233 | mtable->defaultmedia = media; | |
234 | mtable->leafcount = count; | |
235 | mtable->csr12dir = csr12dir; | |
236 | mtable->has_nonmii = mtable->has_mii = mtable->has_reset = 0; | |
237 | mtable->csr15dir = mtable->csr15val = 0; | |
238 | ||
239 | printk(KERN_INFO "%s: EEPROM default media type %s.\n", dev->name, | |
240 | media & 0x0800 ? "Autosense" : medianame[media & MEDIA_MASK]); | |
241 | for (i = 0; i < count; i++) { | |
242 | struct medialeaf *leaf = &mtable->mleaf[i]; | |
243 | ||
244 | if ((p[0] & 0x80) == 0) { /* 21140 Compact block. */ | |
245 | leaf->type = 0; | |
246 | leaf->media = p[0] & 0x3f; | |
247 | leaf->leafdata = p; | |
248 | if ((p[2] & 0x61) == 0x01) /* Bogus, but Znyx boards do it. */ | |
249 | mtable->has_mii = 1; | |
250 | p += 4; | |
251 | } else { | |
252 | leaf->type = p[1]; | |
253 | if (p[1] == 0x05) { | |
254 | mtable->has_reset = i; | |
255 | leaf->media = p[2] & 0x0f; | |
256 | } else if (tp->chip_id == DM910X && p[1] == 0x80) { | |
257 | /* Hack to ignore Davicom delay period block */ | |
258 | mtable->leafcount--; | |
259 | count--; | |
260 | i--; | |
261 | leaf->leafdata = p + 2; | |
262 | p += (p[0] & 0x3f) + 1; | |
263 | continue; | |
264 | } else if (p[1] & 1) { | |
265 | int gpr_len, reset_len; | |
266 | ||
267 | mtable->has_mii = 1; | |
268 | leaf->media = 11; | |
269 | gpr_len=p[3]*2; | |
270 | reset_len=p[4+gpr_len]*2; | |
271 | new_advertise |= get_u16(&p[7+gpr_len+reset_len]); | |
272 | } else { | |
273 | mtable->has_nonmii = 1; | |
274 | leaf->media = p[2] & MEDIA_MASK; | |
275 | /* Davicom's media number for 100BaseTX is strange */ | |
276 | if (tp->chip_id == DM910X && leaf->media == 1) | |
277 | leaf->media = 3; | |
278 | switch (leaf->media) { | |
279 | case 0: new_advertise |= 0x0020; break; | |
280 | case 4: new_advertise |= 0x0040; break; | |
281 | case 3: new_advertise |= 0x0080; break; | |
282 | case 5: new_advertise |= 0x0100; break; | |
283 | case 6: new_advertise |= 0x0200; break; | |
284 | } | |
285 | if (p[1] == 2 && leaf->media == 0) { | |
286 | if (p[2] & 0x40) { | |
287 | u32 base15 = get_unaligned((u16*)&p[7]); | |
288 | mtable->csr15dir = | |
289 | (get_unaligned((u16*)&p[9])<<16) + base15; | |
290 | mtable->csr15val = | |
291 | (get_unaligned((u16*)&p[11])<<16) + base15; | |
292 | } else { | |
293 | mtable->csr15dir = get_unaligned((u16*)&p[3])<<16; | |
294 | mtable->csr15val = get_unaligned((u16*)&p[5])<<16; | |
295 | } | |
296 | } | |
297 | } | |
298 | leaf->leafdata = p + 2; | |
299 | p += (p[0] & 0x3f) + 1; | |
300 | } | |
301 | if (tulip_debug > 1 && leaf->media == 11) { | |
302 | unsigned char *bp = leaf->leafdata; | |
303 | printk(KERN_INFO "%s: MII interface PHY %d, setup/reset " | |
304 | "sequences %d/%d long, capabilities %2.2x %2.2x.\n", | |
305 | dev->name, bp[0], bp[1], bp[2 + bp[1]*2], | |
306 | bp[5 + bp[2 + bp[1]*2]*2], bp[4 + bp[2 + bp[1]*2]*2]); | |
307 | } | |
308 | printk(KERN_INFO "%s: Index #%d - Media %s (#%d) described " | |
309 | "by a %s (%d) block.\n", | |
310 | dev->name, i, medianame[leaf->media & 15], leaf->media, | |
311 | leaf->type < ARRAY_SIZE(block_name) ? block_name[leaf->type] : "<unknown>", | |
312 | leaf->type); | |
313 | } | |
314 | if (new_advertise) | |
315 | tp->sym_advertise = new_advertise; | |
316 | } | |
317 | } | |
318 | /* Reading a serial EEPROM is a "bit" grungy, but we work our way through:->.*/ | |
319 | ||
320 | /* EEPROM_Ctrl bits. */ | |
321 | #define EE_SHIFT_CLK 0x02 /* EEPROM shift clock. */ | |
322 | #define EE_CS 0x01 /* EEPROM chip select. */ | |
323 | #define EE_DATA_WRITE 0x04 /* Data from the Tulip to EEPROM. */ | |
324 | #define EE_WRITE_0 0x01 | |
325 | #define EE_WRITE_1 0x05 | |
326 | #define EE_DATA_READ 0x08 /* Data from the EEPROM chip. */ | |
327 | #define EE_ENB (0x4800 | EE_CS) | |
328 | ||
329 | /* Delay between EEPROM clock transitions. | |
330 | Even at 33Mhz current PCI implementations don't overrun the EEPROM clock. | |
331 | We add a bus turn-around to insure that this remains true. */ | |
332 | #define eeprom_delay() ioread32(ee_addr) | |
333 | ||
334 | /* The EEPROM commands include the alway-set leading bit. */ | |
335 | #define EE_READ_CMD (6) | |
336 | ||
337 | /* Note: this routine returns extra data bits for size detection. */ | |
338 | int __devinit tulip_read_eeprom(struct net_device *dev, int location, int addr_len) | |
339 | { | |
340 | int i; | |
341 | unsigned retval = 0; | |
342 | struct tulip_private *tp = dev->priv; | |
343 | void __iomem *ee_addr = tp->base_addr + CSR9; | |
344 | int read_cmd = location | (EE_READ_CMD << addr_len); | |
345 | ||
346 | iowrite32(EE_ENB & ~EE_CS, ee_addr); | |
347 | iowrite32(EE_ENB, ee_addr); | |
348 | ||
349 | /* Shift the read command bits out. */ | |
350 | for (i = 4 + addr_len; i >= 0; i--) { | |
351 | short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; | |
352 | iowrite32(EE_ENB | dataval, ee_addr); | |
353 | eeprom_delay(); | |
354 | iowrite32(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); | |
355 | eeprom_delay(); | |
356 | retval = (retval << 1) | ((ioread32(ee_addr) & EE_DATA_READ) ? 1 : 0); | |
357 | } | |
358 | iowrite32(EE_ENB, ee_addr); | |
359 | eeprom_delay(); | |
360 | ||
361 | for (i = 16; i > 0; i--) { | |
362 | iowrite32(EE_ENB | EE_SHIFT_CLK, ee_addr); | |
363 | eeprom_delay(); | |
364 | retval = (retval << 1) | ((ioread32(ee_addr) & EE_DATA_READ) ? 1 : 0); | |
365 | iowrite32(EE_ENB, ee_addr); | |
366 | eeprom_delay(); | |
367 | } | |
368 | ||
369 | /* Terminate the EEPROM access. */ | |
370 | iowrite32(EE_ENB & ~EE_CS, ee_addr); | |
371 | return (tp->flags & HAS_SWAPPED_SEEPROM) ? swab16(retval) : retval; | |
372 | } | |
373 |