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1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2005-2006 Fen Systems Ltd. | |
4 | * Copyright 2006-2008 Solarflare Communications Inc. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License version 2 as published | |
8 | * by the Free Software Foundation, incorporated herein by reference. | |
9 | */ | |
10 | ||
11 | #ifndef EFX_BITFIELD_H | |
12 | #define EFX_BITFIELD_H | |
13 | ||
14 | /* | |
15 | * Efx bitfield access | |
16 | * | |
17 | * Efx NICs make extensive use of bitfields up to 128 bits | |
18 | * wide. Since there is no native 128-bit datatype on most systems, | |
19 | * and since 64-bit datatypes are inefficient on 32-bit systems and | |
20 | * vice versa, we wrap accesses in a way that uses the most efficient | |
21 | * datatype. | |
22 | * | |
23 | * The NICs are PCI devices and therefore little-endian. Since most | |
24 | * of the quantities that we deal with are DMAed to/from host memory, | |
25 | * we define our datatypes (efx_oword_t, efx_qword_t and | |
26 | * efx_dword_t) to be little-endian. | |
27 | */ | |
28 | ||
29 | /* Lowest bit numbers and widths */ | |
30 | #define EFX_DUMMY_FIELD_LBN 0 | |
31 | #define EFX_DUMMY_FIELD_WIDTH 0 | |
32 | #define EFX_DWORD_0_LBN 0 | |
33 | #define EFX_DWORD_0_WIDTH 32 | |
34 | #define EFX_DWORD_1_LBN 32 | |
35 | #define EFX_DWORD_1_WIDTH 32 | |
36 | #define EFX_DWORD_2_LBN 64 | |
37 | #define EFX_DWORD_2_WIDTH 32 | |
38 | #define EFX_DWORD_3_LBN 96 | |
39 | #define EFX_DWORD_3_WIDTH 32 | |
40 | ||
41 | /* Specified attribute (e.g. LBN) of the specified field */ | |
42 | #define EFX_VAL(field, attribute) field ## _ ## attribute | |
43 | /* Low bit number of the specified field */ | |
44 | #define EFX_LOW_BIT(field) EFX_VAL(field, LBN) | |
45 | /* Bit width of the specified field */ | |
46 | #define EFX_WIDTH(field) EFX_VAL(field, WIDTH) | |
47 | /* High bit number of the specified field */ | |
48 | #define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1) | |
49 | /* Mask equal in width to the specified field. | |
50 | * | |
51 | * For example, a field with width 5 would have a mask of 0x1f. | |
52 | * | |
53 | * The maximum width mask that can be generated is 64 bits. | |
54 | */ | |
a515089c BH |
55 | #define EFX_MASK64(width) \ |
56 | ((width) == 64 ? ~((u64) 0) : \ | |
57 | (((((u64) 1) << (width))) - 1)) | |
8ceee660 BH |
58 | |
59 | /* Mask equal in width to the specified field. | |
60 | * | |
61 | * For example, a field with width 5 would have a mask of 0x1f. | |
62 | * | |
63 | * The maximum width mask that can be generated is 32 bits. Use | |
64 | * EFX_MASK64 for higher width fields. | |
65 | */ | |
a515089c BH |
66 | #define EFX_MASK32(width) \ |
67 | ((width) == 32 ? ~((u32) 0) : \ | |
68 | (((((u32) 1) << (width))) - 1)) | |
8ceee660 BH |
69 | |
70 | /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */ | |
71 | typedef union efx_dword { | |
72 | __le32 u32[1]; | |
73 | } efx_dword_t; | |
74 | ||
75 | /* A quadword (i.e. 8 byte) datatype - little-endian in HW */ | |
76 | typedef union efx_qword { | |
77 | __le64 u64[1]; | |
78 | __le32 u32[2]; | |
79 | efx_dword_t dword[2]; | |
80 | } efx_qword_t; | |
81 | ||
82 | /* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */ | |
83 | typedef union efx_oword { | |
84 | __le64 u64[2]; | |
85 | efx_qword_t qword[2]; | |
86 | __le32 u32[4]; | |
87 | efx_dword_t dword[4]; | |
88 | } efx_oword_t; | |
89 | ||
90 | /* Format string and value expanders for printk */ | |
91 | #define EFX_DWORD_FMT "%08x" | |
92 | #define EFX_QWORD_FMT "%08x:%08x" | |
93 | #define EFX_OWORD_FMT "%08x:%08x:%08x:%08x" | |
94 | #define EFX_DWORD_VAL(dword) \ | |
95 | ((unsigned int) le32_to_cpu((dword).u32[0])) | |
96 | #define EFX_QWORD_VAL(qword) \ | |
97 | ((unsigned int) le32_to_cpu((qword).u32[1])), \ | |
98 | ((unsigned int) le32_to_cpu((qword).u32[0])) | |
99 | #define EFX_OWORD_VAL(oword) \ | |
100 | ((unsigned int) le32_to_cpu((oword).u32[3])), \ | |
101 | ((unsigned int) le32_to_cpu((oword).u32[2])), \ | |
102 | ((unsigned int) le32_to_cpu((oword).u32[1])), \ | |
103 | ((unsigned int) le32_to_cpu((oword).u32[0])) | |
104 | ||
105 | /* | |
106 | * Extract bit field portion [low,high) from the native-endian element | |
107 | * which contains bits [min,max). | |
108 | * | |
109 | * For example, suppose "element" represents the high 32 bits of a | |
110 | * 64-bit value, and we wish to extract the bits belonging to the bit | |
111 | * field occupying bits 28-45 of this 64-bit value. | |
112 | * | |
113 | * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give | |
114 | * | |
115 | * ( element ) << 4 | |
116 | * | |
117 | * The result will contain the relevant bits filled in in the range | |
118 | * [0,high-low), with garbage in bits [high-low+1,...). | |
119 | */ | |
120 | #define EFX_EXTRACT_NATIVE(native_element, min, max, low, high) \ | |
121 | (((low > max) || (high < min)) ? 0 : \ | |
122 | ((low > min) ? \ | |
123 | ((native_element) >> (low - min)) : \ | |
124 | ((native_element) << (min - low)))) | |
125 | ||
126 | /* | |
127 | * Extract bit field portion [low,high) from the 64-bit little-endian | |
128 | * element which contains bits [min,max) | |
129 | */ | |
130 | #define EFX_EXTRACT64(element, min, max, low, high) \ | |
131 | EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high) | |
132 | ||
133 | /* | |
134 | * Extract bit field portion [low,high) from the 32-bit little-endian | |
135 | * element which contains bits [min,max) | |
136 | */ | |
137 | #define EFX_EXTRACT32(element, min, max, low, high) \ | |
138 | EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high) | |
139 | ||
140 | #define EFX_EXTRACT_OWORD64(oword, low, high) \ | |
a515089c BH |
141 | ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \ |
142 | EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \ | |
143 | EFX_MASK64(high + 1 - low)) | |
8ceee660 BH |
144 | |
145 | #define EFX_EXTRACT_QWORD64(qword, low, high) \ | |
a515089c BH |
146 | (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \ |
147 | EFX_MASK64(high + 1 - low)) | |
8ceee660 BH |
148 | |
149 | #define EFX_EXTRACT_OWORD32(oword, low, high) \ | |
a515089c BH |
150 | ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \ |
151 | EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \ | |
152 | EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \ | |
153 | EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \ | |
154 | EFX_MASK32(high + 1 - low)) | |
8ceee660 BH |
155 | |
156 | #define EFX_EXTRACT_QWORD32(qword, low, high) \ | |
a515089c BH |
157 | ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \ |
158 | EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \ | |
159 | EFX_MASK32(high + 1 - low)) | |
8ceee660 | 160 | |
a515089c BH |
161 | #define EFX_EXTRACT_DWORD(dword, low, high) \ |
162 | (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \ | |
163 | EFX_MASK32(high + 1 - low)) | |
8ceee660 | 164 | |
a515089c BH |
165 | #define EFX_OWORD_FIELD64(oword, field) \ |
166 | EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \ | |
167 | EFX_HIGH_BIT(field)) | |
8ceee660 | 168 | |
a515089c BH |
169 | #define EFX_QWORD_FIELD64(qword, field) \ |
170 | EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \ | |
171 | EFX_HIGH_BIT(field)) | |
8ceee660 | 172 | |
a515089c BH |
173 | #define EFX_OWORD_FIELD32(oword, field) \ |
174 | EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \ | |
175 | EFX_HIGH_BIT(field)) | |
8ceee660 | 176 | |
a515089c BH |
177 | #define EFX_QWORD_FIELD32(qword, field) \ |
178 | EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \ | |
179 | EFX_HIGH_BIT(field)) | |
8ceee660 | 180 | |
a515089c BH |
181 | #define EFX_DWORD_FIELD(dword, field) \ |
182 | EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \ | |
183 | EFX_HIGH_BIT(field)) | |
8ceee660 BH |
184 | |
185 | #define EFX_OWORD_IS_ZERO64(oword) \ | |
186 | (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0) | |
187 | ||
188 | #define EFX_QWORD_IS_ZERO64(qword) \ | |
189 | (((qword).u64[0]) == (__force __le64) 0) | |
190 | ||
191 | #define EFX_OWORD_IS_ZERO32(oword) \ | |
192 | (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \ | |
193 | == (__force __le32) 0) | |
194 | ||
195 | #define EFX_QWORD_IS_ZERO32(qword) \ | |
196 | (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0) | |
197 | ||
198 | #define EFX_DWORD_IS_ZERO(dword) \ | |
199 | (((dword).u32[0]) == (__force __le32) 0) | |
200 | ||
201 | #define EFX_OWORD_IS_ALL_ONES64(oword) \ | |
202 | (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0)) | |
203 | ||
204 | #define EFX_QWORD_IS_ALL_ONES64(qword) \ | |
205 | ((qword).u64[0] == ~((__force __le64) 0)) | |
206 | ||
207 | #define EFX_OWORD_IS_ALL_ONES32(oword) \ | |
208 | (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \ | |
209 | == ~((__force __le32) 0)) | |
210 | ||
211 | #define EFX_QWORD_IS_ALL_ONES32(qword) \ | |
212 | (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0)) | |
213 | ||
214 | #define EFX_DWORD_IS_ALL_ONES(dword) \ | |
215 | ((dword).u32[0] == ~((__force __le32) 0)) | |
216 | ||
217 | #if BITS_PER_LONG == 64 | |
218 | #define EFX_OWORD_FIELD EFX_OWORD_FIELD64 | |
219 | #define EFX_QWORD_FIELD EFX_QWORD_FIELD64 | |
220 | #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64 | |
221 | #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64 | |
222 | #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64 | |
223 | #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64 | |
224 | #else | |
225 | #define EFX_OWORD_FIELD EFX_OWORD_FIELD32 | |
226 | #define EFX_QWORD_FIELD EFX_QWORD_FIELD32 | |
227 | #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32 | |
228 | #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32 | |
229 | #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32 | |
230 | #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES32 | |
231 | #endif | |
232 | ||
233 | /* | |
234 | * Construct bit field portion | |
235 | * | |
236 | * Creates the portion of the bit field [low,high) that lies within | |
237 | * the range [min,max). | |
238 | */ | |
239 | #define EFX_INSERT_NATIVE64(min, max, low, high, value) \ | |
240 | (((low > max) || (high < min)) ? 0 : \ | |
241 | ((low > min) ? \ | |
242 | (((u64) (value)) << (low - min)) : \ | |
243 | (((u64) (value)) >> (min - low)))) | |
244 | ||
245 | #define EFX_INSERT_NATIVE32(min, max, low, high, value) \ | |
246 | (((low > max) || (high < min)) ? 0 : \ | |
247 | ((low > min) ? \ | |
248 | (((u32) (value)) << (low - min)) : \ | |
249 | (((u32) (value)) >> (min - low)))) | |
250 | ||
251 | #define EFX_INSERT_NATIVE(min, max, low, high, value) \ | |
252 | ((((max - min) >= 32) || ((high - low) >= 32)) ? \ | |
253 | EFX_INSERT_NATIVE64(min, max, low, high, value) : \ | |
254 | EFX_INSERT_NATIVE32(min, max, low, high, value)) | |
255 | ||
256 | /* | |
257 | * Construct bit field portion | |
258 | * | |
259 | * Creates the portion of the named bit field that lies within the | |
260 | * range [min,max). | |
261 | */ | |
262 | #define EFX_INSERT_FIELD_NATIVE(min, max, field, value) \ | |
263 | EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \ | |
264 | EFX_HIGH_BIT(field), value) | |
265 | ||
266 | /* | |
267 | * Construct bit field | |
268 | * | |
269 | * Creates the portion of the named bit fields that lie within the | |
270 | * range [min,max). | |
271 | */ | |
272 | #define EFX_INSERT_FIELDS_NATIVE(min, max, \ | |
273 | field1, value1, \ | |
274 | field2, value2, \ | |
275 | field3, value3, \ | |
276 | field4, value4, \ | |
277 | field5, value5, \ | |
278 | field6, value6, \ | |
279 | field7, value7, \ | |
280 | field8, value8, \ | |
281 | field9, value9, \ | |
282 | field10, value10) \ | |
283 | (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \ | |
284 | EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \ | |
285 | EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \ | |
286 | EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \ | |
287 | EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \ | |
288 | EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \ | |
289 | EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \ | |
290 | EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \ | |
291 | EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \ | |
292 | EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10))) | |
293 | ||
294 | #define EFX_INSERT_FIELDS64(...) \ | |
295 | cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__)) | |
296 | ||
297 | #define EFX_INSERT_FIELDS32(...) \ | |
298 | cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__)) | |
299 | ||
300 | #define EFX_POPULATE_OWORD64(oword, ...) do { \ | |
301 | (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ | |
302 | (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \ | |
303 | } while (0) | |
304 | ||
305 | #define EFX_POPULATE_QWORD64(qword, ...) do { \ | |
306 | (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ | |
307 | } while (0) | |
308 | ||
309 | #define EFX_POPULATE_OWORD32(oword, ...) do { \ | |
310 | (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
311 | (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ | |
312 | (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \ | |
313 | (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \ | |
314 | } while (0) | |
315 | ||
316 | #define EFX_POPULATE_QWORD32(qword, ...) do { \ | |
317 | (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
318 | (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ | |
319 | } while (0) | |
320 | ||
321 | #define EFX_POPULATE_DWORD(dword, ...) do { \ | |
322 | (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
323 | } while (0) | |
324 | ||
325 | #if BITS_PER_LONG == 64 | |
326 | #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64 | |
327 | #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64 | |
328 | #else | |
329 | #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32 | |
330 | #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32 | |
331 | #endif | |
332 | ||
333 | /* Populate an octword field with various numbers of arguments */ | |
334 | #define EFX_POPULATE_OWORD_10 EFX_POPULATE_OWORD | |
335 | #define EFX_POPULATE_OWORD_9(oword, ...) \ | |
336 | EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
337 | #define EFX_POPULATE_OWORD_8(oword, ...) \ | |
338 | EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
339 | #define EFX_POPULATE_OWORD_7(oword, ...) \ | |
340 | EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
341 | #define EFX_POPULATE_OWORD_6(oword, ...) \ | |
342 | EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
343 | #define EFX_POPULATE_OWORD_5(oword, ...) \ | |
344 | EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
345 | #define EFX_POPULATE_OWORD_4(oword, ...) \ | |
346 | EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
347 | #define EFX_POPULATE_OWORD_3(oword, ...) \ | |
348 | EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
349 | #define EFX_POPULATE_OWORD_2(oword, ...) \ | |
350 | EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
351 | #define EFX_POPULATE_OWORD_1(oword, ...) \ | |
352 | EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
353 | #define EFX_ZERO_OWORD(oword) \ | |
354 | EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0) | |
355 | #define EFX_SET_OWORD(oword) \ | |
356 | EFX_POPULATE_OWORD_4(oword, \ | |
357 | EFX_DWORD_0, 0xffffffff, \ | |
358 | EFX_DWORD_1, 0xffffffff, \ | |
359 | EFX_DWORD_2, 0xffffffff, \ | |
360 | EFX_DWORD_3, 0xffffffff) | |
361 | ||
362 | /* Populate a quadword field with various numbers of arguments */ | |
363 | #define EFX_POPULATE_QWORD_10 EFX_POPULATE_QWORD | |
364 | #define EFX_POPULATE_QWORD_9(qword, ...) \ | |
365 | EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
366 | #define EFX_POPULATE_QWORD_8(qword, ...) \ | |
367 | EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
368 | #define EFX_POPULATE_QWORD_7(qword, ...) \ | |
369 | EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
370 | #define EFX_POPULATE_QWORD_6(qword, ...) \ | |
371 | EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
372 | #define EFX_POPULATE_QWORD_5(qword, ...) \ | |
373 | EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
374 | #define EFX_POPULATE_QWORD_4(qword, ...) \ | |
375 | EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
376 | #define EFX_POPULATE_QWORD_3(qword, ...) \ | |
377 | EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
378 | #define EFX_POPULATE_QWORD_2(qword, ...) \ | |
379 | EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
380 | #define EFX_POPULATE_QWORD_1(qword, ...) \ | |
381 | EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
382 | #define EFX_ZERO_QWORD(qword) \ | |
383 | EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0) | |
384 | #define EFX_SET_QWORD(qword) \ | |
385 | EFX_POPULATE_QWORD_2(qword, \ | |
386 | EFX_DWORD_0, 0xffffffff, \ | |
387 | EFX_DWORD_1, 0xffffffff) | |
388 | ||
389 | /* Populate a dword field with various numbers of arguments */ | |
390 | #define EFX_POPULATE_DWORD_10 EFX_POPULATE_DWORD | |
391 | #define EFX_POPULATE_DWORD_9(dword, ...) \ | |
392 | EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
393 | #define EFX_POPULATE_DWORD_8(dword, ...) \ | |
394 | EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
395 | #define EFX_POPULATE_DWORD_7(dword, ...) \ | |
396 | EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
397 | #define EFX_POPULATE_DWORD_6(dword, ...) \ | |
398 | EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
399 | #define EFX_POPULATE_DWORD_5(dword, ...) \ | |
400 | EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
401 | #define EFX_POPULATE_DWORD_4(dword, ...) \ | |
402 | EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
403 | #define EFX_POPULATE_DWORD_3(dword, ...) \ | |
404 | EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
405 | #define EFX_POPULATE_DWORD_2(dword, ...) \ | |
406 | EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
407 | #define EFX_POPULATE_DWORD_1(dword, ...) \ | |
408 | EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
409 | #define EFX_ZERO_DWORD(dword) \ | |
410 | EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0) | |
411 | #define EFX_SET_DWORD(dword) \ | |
412 | EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff) | |
413 | ||
414 | /* | |
415 | * Modify a named field within an already-populated structure. Used | |
416 | * for read-modify-write operations. | |
417 | * | |
418 | */ | |
8ceee660 BH |
419 | #define EFX_INVERT_OWORD(oword) do { \ |
420 | (oword).u64[0] = ~((oword).u64[0]); \ | |
421 | (oword).u64[1] = ~((oword).u64[1]); \ | |
422 | } while (0) | |
423 | ||
8c8661e4 BH |
424 | #define EFX_AND_OWORD(oword, from, mask) \ |
425 | do { \ | |
426 | (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \ | |
427 | (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \ | |
428 | } while (0) | |
429 | ||
430 | #define EFX_OR_OWORD(oword, from, mask) \ | |
431 | do { \ | |
432 | (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \ | |
433 | (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \ | |
434 | } while (0) | |
435 | ||
a515089c BH |
436 | #define EFX_INSERT64(min, max, low, high, value) \ |
437 | cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value)) | |
8ceee660 | 438 | |
a515089c BH |
439 | #define EFX_INSERT32(min, max, low, high, value) \ |
440 | cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value)) | |
8ceee660 | 441 | |
a515089c BH |
442 | #define EFX_INPLACE_MASK64(min, max, low, high) \ |
443 | EFX_INSERT64(min, max, low, high, EFX_MASK64(high + 1 - low)) | |
8ceee660 | 444 | |
a515089c BH |
445 | #define EFX_INPLACE_MASK32(min, max, low, high) \ |
446 | EFX_INSERT32(min, max, low, high, EFX_MASK32(high + 1 - low)) | |
8ceee660 | 447 | |
a515089c | 448 | #define EFX_SET_OWORD64(oword, low, high, value) do { \ |
8ceee660 | 449 | (oword).u64[0] = (((oword).u64[0] \ |
a515089c BH |
450 | & ~EFX_INPLACE_MASK64(0, 63, low, high)) \ |
451 | | EFX_INSERT64(0, 63, low, high, value)); \ | |
8ceee660 | 452 | (oword).u64[1] = (((oword).u64[1] \ |
a515089c BH |
453 | & ~EFX_INPLACE_MASK64(64, 127, low, high)) \ |
454 | | EFX_INSERT64(64, 127, low, high, value)); \ | |
8ceee660 BH |
455 | } while (0) |
456 | ||
a515089c | 457 | #define EFX_SET_QWORD64(qword, low, high, value) do { \ |
8ceee660 | 458 | (qword).u64[0] = (((qword).u64[0] \ |
a515089c BH |
459 | & ~EFX_INPLACE_MASK64(0, 63, low, high)) \ |
460 | | EFX_INSERT64(0, 63, low, high, value)); \ | |
8ceee660 BH |
461 | } while (0) |
462 | ||
a515089c | 463 | #define EFX_SET_OWORD32(oword, low, high, value) do { \ |
8ceee660 | 464 | (oword).u32[0] = (((oword).u32[0] \ |
a515089c BH |
465 | & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ |
466 | | EFX_INSERT32(0, 31, low, high, value)); \ | |
8ceee660 | 467 | (oword).u32[1] = (((oword).u32[1] \ |
a515089c BH |
468 | & ~EFX_INPLACE_MASK32(32, 63, low, high)) \ |
469 | | EFX_INSERT32(32, 63, low, high, value)); \ | |
8ceee660 | 470 | (oword).u32[2] = (((oword).u32[2] \ |
a515089c BH |
471 | & ~EFX_INPLACE_MASK32(64, 95, low, high)) \ |
472 | | EFX_INSERT32(64, 95, low, high, value)); \ | |
8ceee660 | 473 | (oword).u32[3] = (((oword).u32[3] \ |
a515089c BH |
474 | & ~EFX_INPLACE_MASK32(96, 127, low, high)) \ |
475 | | EFX_INSERT32(96, 127, low, high, value)); \ | |
8ceee660 BH |
476 | } while (0) |
477 | ||
a515089c | 478 | #define EFX_SET_QWORD32(qword, low, high, value) do { \ |
8ceee660 | 479 | (qword).u32[0] = (((qword).u32[0] \ |
a515089c BH |
480 | & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ |
481 | | EFX_INSERT32(0, 31, low, high, value)); \ | |
8ceee660 | 482 | (qword).u32[1] = (((qword).u32[1] \ |
a515089c BH |
483 | & ~EFX_INPLACE_MASK32(32, 63, low, high)) \ |
484 | | EFX_INSERT32(32, 63, low, high, value)); \ | |
8ceee660 BH |
485 | } while (0) |
486 | ||
a515089c BH |
487 | #define EFX_SET_DWORD32(dword, low, high, value) do { \ |
488 | (dword).u32[0] = (((dword).u32[0] \ | |
489 | & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ | |
490 | | EFX_INSERT32(0, 31, low, high, value)); \ | |
8ceee660 BH |
491 | } while (0) |
492 | ||
a515089c BH |
493 | #define EFX_SET_OWORD_FIELD64(oword, field, value) \ |
494 | EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \ | |
495 | EFX_HIGH_BIT(field), value) | |
496 | ||
497 | #define EFX_SET_QWORD_FIELD64(qword, field, value) \ | |
498 | EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \ | |
499 | EFX_HIGH_BIT(field), value) | |
500 | ||
501 | #define EFX_SET_OWORD_FIELD32(oword, field, value) \ | |
502 | EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \ | |
503 | EFX_HIGH_BIT(field), value) | |
504 | ||
505 | #define EFX_SET_QWORD_FIELD32(qword, field, value) \ | |
506 | EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \ | |
507 | EFX_HIGH_BIT(field), value) | |
508 | ||
509 | #define EFX_SET_DWORD_FIELD(dword, field, value) \ | |
510 | EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \ | |
511 | EFX_HIGH_BIT(field), value) | |
512 | ||
513 | ||
514 | ||
8ceee660 BH |
515 | #if BITS_PER_LONG == 64 |
516 | #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64 | |
517 | #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64 | |
518 | #else | |
519 | #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32 | |
520 | #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32 | |
521 | #endif | |
522 | ||
523 | #define EFX_SET_OWORD_FIELD_VER(efx, oword, field, value) do { \ | |
55668611 | 524 | if (falcon_rev(efx) >= FALCON_REV_B0) { \ |
8ceee660 BH |
525 | EFX_SET_OWORD_FIELD((oword), field##_B0, (value)); \ |
526 | } else { \ | |
527 | EFX_SET_OWORD_FIELD((oword), field##_A1, (value)); \ | |
528 | } \ | |
529 | } while (0) | |
530 | ||
531 | #define EFX_QWORD_FIELD_VER(efx, qword, field) \ | |
55668611 | 532 | (falcon_rev(efx) >= FALCON_REV_B0 ? \ |
8ceee660 BH |
533 | EFX_QWORD_FIELD((qword), field##_B0) : \ |
534 | EFX_QWORD_FIELD((qword), field##_A1)) | |
535 | ||
536 | /* Used to avoid compiler warnings about shift range exceeding width | |
537 | * of the data types when dma_addr_t is only 32 bits wide. | |
538 | */ | |
539 | #define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t)) | |
540 | #define EFX_DMA_TYPE_WIDTH(width) \ | |
541 | (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH) | |
8ceee660 | 542 | |
8c8661e4 BH |
543 | |
544 | /* Static initialiser */ | |
545 | #define EFX_OWORD32(a, b, c, d) \ | |
546 | { .u32 = { __constant_cpu_to_le32(a), __constant_cpu_to_le32(b), \ | |
547 | __constant_cpu_to_le32(c), __constant_cpu_to_le32(d) } } | |
548 | ||
8ceee660 | 549 | #endif /* EFX_BITFIELD_H */ |