xref: /openbmc/linux/drivers/cpufreq/longhaul.h (revision 4f19048f)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  longhaul.h
4  *  (C) 2003 Dave Jones.
5  *
6  *  VIA-specific information
7  */
8 
9 union msr_bcr2 {
10 	struct {
11 		unsigned Reseved:19,	// 18:0
12 		ESOFTBF:1,		// 19
13 		Reserved2:3,		// 22:20
14 		CLOCKMUL:4,		// 26:23
15 		Reserved3:5;		// 31:27
16 	} bits;
17 	unsigned long val;
18 };
19 
20 union msr_longhaul {
21 	struct {
22 		unsigned RevisionID:4,	// 3:0
23 		RevisionKey:4,		// 7:4
24 		EnableSoftBusRatio:1,	// 8
25 		EnableSoftVID:1,	// 9
26 		EnableSoftBSEL:1,	// 10
27 		Reserved:3,		// 11:13
28 		SoftBusRatio4:1,	// 14
29 		VRMRev:1,		// 15
30 		SoftBusRatio:4,		// 19:16
31 		SoftVID:5,		// 24:20
32 		Reserved2:3,		// 27:25
33 		SoftBSEL:2,		// 29:28
34 		Reserved3:2,		// 31:30
35 		MaxMHzBR:4,		// 35:32
36 		MaximumVID:5,		// 40:36
37 		MaxMHzFSB:2,		// 42:41
38 		MaxMHzBR4:1,		// 43
39 		Reserved4:4,		// 47:44
40 		MinMHzBR:4,		// 51:48
41 		MinimumVID:5,		// 56:52
42 		MinMHzFSB:2,		// 58:57
43 		MinMHzBR4:1,		// 59
44 		Reserved5:4;		// 63:60
45 	} bits;
46 	unsigned long long val;
47 };
48 
49 /*
50  * Clock ratio tables. Div/Mod by 10 to get ratio.
51  * The eblcr values specify the ratio read from the CPU.
52  * The mults values specify what to write to the CPU.
53  */
54 
55 /*
56  * VIA C3 Samuel 1  & Samuel 2 (stepping 0)
57  */
58 static const int samuel1_mults[16] = {
59 	-1, /* 0000 -> RESERVED */
60 	30, /* 0001 ->  3.0x */
61 	40, /* 0010 ->  4.0x */
62 	-1, /* 0011 -> RESERVED */
63 	-1, /* 0100 -> RESERVED */
64 	35, /* 0101 ->  3.5x */
65 	45, /* 0110 ->  4.5x */
66 	55, /* 0111 ->  5.5x */
67 	60, /* 1000 ->  6.0x */
68 	70, /* 1001 ->  7.0x */
69 	80, /* 1010 ->  8.0x */
70 	50, /* 1011 ->  5.0x */
71 	65, /* 1100 ->  6.5x */
72 	75, /* 1101 ->  7.5x */
73 	-1, /* 1110 -> RESERVED */
74 	-1, /* 1111 -> RESERVED */
75 };
76 
77 static const int samuel1_eblcr[16] = {
78 	50, /* 0000 -> RESERVED */
79 	30, /* 0001 ->  3.0x */
80 	40, /* 0010 ->  4.0x */
81 	-1, /* 0011 -> RESERVED */
82 	55, /* 0100 ->  5.5x */
83 	35, /* 0101 ->  3.5x */
84 	45, /* 0110 ->  4.5x */
85 	-1, /* 0111 -> RESERVED */
86 	-1, /* 1000 -> RESERVED */
87 	70, /* 1001 ->  7.0x */
88 	80, /* 1010 ->  8.0x */
89 	60, /* 1011 ->  6.0x */
90 	-1, /* 1100 -> RESERVED */
91 	75, /* 1101 ->  7.5x */
92 	-1, /* 1110 -> RESERVED */
93 	65, /* 1111 ->  6.5x */
94 };
95 
96 /*
97  * VIA C3 Samuel2 Stepping 1->15
98  */
99 static const int samuel2_eblcr[16] = {
100 	50,  /* 0000 ->  5.0x */
101 	30,  /* 0001 ->  3.0x */
102 	40,  /* 0010 ->  4.0x */
103 	100, /* 0011 -> 10.0x */
104 	55,  /* 0100 ->  5.5x */
105 	35,  /* 0101 ->  3.5x */
106 	45,  /* 0110 ->  4.5x */
107 	110, /* 0111 -> 11.0x */
108 	90,  /* 1000 ->  9.0x */
109 	70,  /* 1001 ->  7.0x */
110 	80,  /* 1010 ->  8.0x */
111 	60,  /* 1011 ->  6.0x */
112 	120, /* 1100 -> 12.0x */
113 	75,  /* 1101 ->  7.5x */
114 	130, /* 1110 -> 13.0x */
115 	65,  /* 1111 ->  6.5x */
116 };
117 
118 /*
119  * VIA C3 Ezra
120  */
121 static const int ezra_mults[16] = {
122 	100, /* 0000 -> 10.0x */
123 	30,  /* 0001 ->  3.0x */
124 	40,  /* 0010 ->  4.0x */
125 	90,  /* 0011 ->  9.0x */
126 	95,  /* 0100 ->  9.5x */
127 	35,  /* 0101 ->  3.5x */
128 	45,  /* 0110 ->  4.5x */
129 	55,  /* 0111 ->  5.5x */
130 	60,  /* 1000 ->  6.0x */
131 	70,  /* 1001 ->  7.0x */
132 	80,  /* 1010 ->  8.0x */
133 	50,  /* 1011 ->  5.0x */
134 	65,  /* 1100 ->  6.5x */
135 	75,  /* 1101 ->  7.5x */
136 	85,  /* 1110 ->  8.5x */
137 	120, /* 1111 -> 12.0x */
138 };
139 
140 static const int ezra_eblcr[16] = {
141 	50,  /* 0000 ->  5.0x */
142 	30,  /* 0001 ->  3.0x */
143 	40,  /* 0010 ->  4.0x */
144 	100, /* 0011 -> 10.0x */
145 	55,  /* 0100 ->  5.5x */
146 	35,  /* 0101 ->  3.5x */
147 	45,  /* 0110 ->  4.5x */
148 	95,  /* 0111 ->  9.5x */
149 	90,  /* 1000 ->  9.0x */
150 	70,  /* 1001 ->  7.0x */
151 	80,  /* 1010 ->  8.0x */
152 	60,  /* 1011 ->  6.0x */
153 	120, /* 1100 -> 12.0x */
154 	75,  /* 1101 ->  7.5x */
155 	85,  /* 1110 ->  8.5x */
156 	65,  /* 1111 ->  6.5x */
157 };
158 
159 /*
160  * VIA C3 (Ezra-T) [C5M].
161  */
162 static const int ezrat_mults[32] = {
163 	100, /* 0000 -> 10.0x */
164 	30,  /* 0001 ->  3.0x */
165 	40,  /* 0010 ->  4.0x */
166 	90,  /* 0011 ->  9.0x */
167 	95,  /* 0100 ->  9.5x */
168 	35,  /* 0101 ->  3.5x */
169 	45,  /* 0110 ->  4.5x */
170 	55,  /* 0111 ->  5.5x */
171 	60,  /* 1000 ->  6.0x */
172 	70,  /* 1001 ->  7.0x */
173 	80,  /* 1010 ->  8.0x */
174 	50,  /* 1011 ->  5.0x */
175 	65,  /* 1100 ->  6.5x */
176 	75,  /* 1101 ->  7.5x */
177 	85,  /* 1110 ->  8.5x */
178 	120, /* 1111 ->  12.0x */
179 
180 	-1,  /* 0000 -> RESERVED (10.0x) */
181 	110, /* 0001 -> 11.0x */
182 	-1, /* 0010 -> 12.0x */
183 	-1,  /* 0011 -> RESERVED (9.0x)*/
184 	105, /* 0100 -> 10.5x */
185 	115, /* 0101 -> 11.5x */
186 	125, /* 0110 -> 12.5x */
187 	135, /* 0111 -> 13.5x */
188 	140, /* 1000 -> 14.0x */
189 	150, /* 1001 -> 15.0x */
190 	160, /* 1010 -> 16.0x */
191 	130, /* 1011 -> 13.0x */
192 	145, /* 1100 -> 14.5x */
193 	155, /* 1101 -> 15.5x */
194 	-1,  /* 1110 -> RESERVED (13.0x) */
195 	-1,  /* 1111 -> RESERVED (12.0x) */
196 };
197 
198 static const int ezrat_eblcr[32] = {
199 	50,  /* 0000 ->  5.0x */
200 	30,  /* 0001 ->  3.0x */
201 	40,  /* 0010 ->  4.0x */
202 	100, /* 0011 -> 10.0x */
203 	55,  /* 0100 ->  5.5x */
204 	35,  /* 0101 ->  3.5x */
205 	45,  /* 0110 ->  4.5x */
206 	95,  /* 0111 ->  9.5x */
207 	90,  /* 1000 ->  9.0x */
208 	70,  /* 1001 ->  7.0x */
209 	80,  /* 1010 ->  8.0x */
210 	60,  /* 1011 ->  6.0x */
211 	120, /* 1100 -> 12.0x */
212 	75,  /* 1101 ->  7.5x */
213 	85,  /* 1110 ->  8.5x */
214 	65,  /* 1111 ->  6.5x */
215 
216 	-1,  /* 0000 -> RESERVED (9.0x) */
217 	110, /* 0001 -> 11.0x */
218 	120, /* 0010 -> 12.0x */
219 	-1,  /* 0011 -> RESERVED (10.0x)*/
220 	135, /* 0100 -> 13.5x */
221 	115, /* 0101 -> 11.5x */
222 	125, /* 0110 -> 12.5x */
223 	105, /* 0111 -> 10.5x */
224 	130, /* 1000 -> 13.0x */
225 	150, /* 1001 -> 15.0x */
226 	160, /* 1010 -> 16.0x */
227 	140, /* 1011 -> 14.0x */
228 	-1,  /* 1100 -> RESERVED (12.0x) */
229 	155, /* 1101 -> 15.5x */
230 	-1,  /* 1110 -> RESERVED (13.0x) */
231 	145, /* 1111 -> 14.5x */
232 };
233 
234 /*
235  * VIA C3 Nehemiah */
236 
237 static const int nehemiah_mults[32] = {
238 	100, /* 0000 -> 10.0x */
239 	-1, /* 0001 -> 16.0x */
240 	40,  /* 0010 ->  4.0x */
241 	90,  /* 0011 ->  9.0x */
242 	95,  /* 0100 ->  9.5x */
243 	-1,  /* 0101 ->  RESERVED */
244 	45,  /* 0110 ->  4.5x */
245 	55,  /* 0111 ->  5.5x */
246 	60,  /* 1000 ->  6.0x */
247 	70,  /* 1001 ->  7.0x */
248 	80,  /* 1010 ->  8.0x */
249 	50,  /* 1011 ->  5.0x */
250 	65,  /* 1100 ->  6.5x */
251 	75,  /* 1101 ->  7.5x */
252 	85,  /* 1110 ->  8.5x */
253 	120, /* 1111 -> 12.0x */
254 	-1, /* 0000 -> 10.0x */
255 	110, /* 0001 -> 11.0x */
256 	-1, /* 0010 -> 12.0x */
257 	-1,  /* 0011 ->  9.0x */
258 	105, /* 0100 -> 10.5x */
259 	115, /* 0101 -> 11.5x */
260 	125, /* 0110 -> 12.5x */
261 	135, /* 0111 -> 13.5x */
262 	140, /* 1000 -> 14.0x */
263 	150, /* 1001 -> 15.0x */
264 	160, /* 1010 -> 16.0x */
265 	130, /* 1011 -> 13.0x */
266 	145, /* 1100 -> 14.5x */
267 	155, /* 1101 -> 15.5x */
268 	-1,  /* 1110 -> RESERVED (13.0x) */
269 	-1, /* 1111 -> 12.0x */
270 };
271 
272 static const int nehemiah_eblcr[32] = {
273 	50,  /* 0000 ->  5.0x */
274 	160, /* 0001 -> 16.0x */
275 	40,  /* 0010 ->  4.0x */
276 	100, /* 0011 -> 10.0x */
277 	55,  /* 0100 ->  5.5x */
278 	-1,  /* 0101 ->  RESERVED */
279 	45,  /* 0110 ->  4.5x */
280 	95,  /* 0111 ->  9.5x */
281 	90,  /* 1000 ->  9.0x */
282 	70,  /* 1001 ->  7.0x */
283 	80,  /* 1010 ->  8.0x */
284 	60,  /* 1011 ->  6.0x */
285 	120, /* 1100 -> 12.0x */
286 	75,  /* 1101 ->  7.5x */
287 	85,  /* 1110 ->  8.5x */
288 	65,  /* 1111 ->  6.5x */
289 	90,  /* 0000 ->  9.0x */
290 	110, /* 0001 -> 11.0x */
291 	120, /* 0010 -> 12.0x */
292 	100, /* 0011 -> 10.0x */
293 	135, /* 0100 -> 13.5x */
294 	115, /* 0101 -> 11.5x */
295 	125, /* 0110 -> 12.5x */
296 	105, /* 0111 -> 10.5x */
297 	130, /* 1000 -> 13.0x */
298 	150, /* 1001 -> 15.0x */
299 	160, /* 1010 -> 16.0x */
300 	140, /* 1011 -> 14.0x */
301 	120, /* 1100 -> 12.0x */
302 	155, /* 1101 -> 15.5x */
303 	-1,  /* 1110 -> RESERVED (13.0x) */
304 	145 /* 1111 -> 14.5x */
305 };
306 
307 /*
308  * Voltage scales. Div/Mod by 1000 to get actual voltage.
309  * Which scale to use depends on the VRM type in use.
310  */
311 
312 struct mV_pos {
313 	unsigned short mV;
314 	unsigned short pos;
315 };
316 
317 static const struct mV_pos vrm85_mV[32] = {
318 	{1250, 8},	{1200, 6},	{1150, 4},	{1100, 2},
319 	{1050, 0},	{1800, 30},	{1750, 28},	{1700, 26},
320 	{1650, 24},	{1600, 22},	{1550, 20},	{1500, 18},
321 	{1450, 16},	{1400, 14},	{1350, 12},	{1300, 10},
322 	{1275, 9},	{1225, 7},	{1175, 5},	{1125, 3},
323 	{1075, 1},	{1825, 31},	{1775, 29},	{1725, 27},
324 	{1675, 25},	{1625, 23},	{1575, 21},	{1525, 19},
325 	{1475, 17},	{1425, 15},	{1375, 13},	{1325, 11}
326 };
327 
328 static const unsigned char mV_vrm85[32] = {
329 	0x04,	0x14,	0x03,	0x13,	0x02,	0x12,	0x01,	0x11,
330 	0x00,	0x10,	0x0f,	0x1f,	0x0e,	0x1e,	0x0d,	0x1d,
331 	0x0c,	0x1c,	0x0b,	0x1b,	0x0a,	0x1a,	0x09,	0x19,
332 	0x08,	0x18,	0x07,	0x17,	0x06,	0x16,	0x05,	0x15
333 };
334 
335 static const struct mV_pos mobilevrm_mV[32] = {
336 	{1750, 31},	{1700, 30},	{1650, 29},	{1600, 28},
337 	{1550, 27},	{1500, 26},	{1450, 25},	{1400, 24},
338 	{1350, 23},	{1300, 22},	{1250, 21},	{1200, 20},
339 	{1150, 19},	{1100, 18},	{1050, 17},	{1000, 16},
340 	{975, 15},	{950, 14},	{925, 13},	{900, 12},
341 	{875, 11},	{850, 10},	{825, 9},	{800, 8},
342 	{775, 7},	{750, 6},	{725, 5},	{700, 4},
343 	{675, 3},	{650, 2},	{625, 1},	{600, 0}
344 };
345 
346 static const unsigned char mV_mobilevrm[32] = {
347 	0x1f,	0x1e,	0x1d,	0x1c,	0x1b,	0x1a,	0x19,	0x18,
348 	0x17,	0x16,	0x15,	0x14,	0x13,	0x12,	0x11,	0x10,
349 	0x0f,	0x0e,	0x0d,	0x0c,	0x0b,	0x0a,	0x09,	0x08,
350 	0x07,	0x06,	0x05,	0x04,	0x03,	0x02,	0x01,	0x00
351 };
352 
353