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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
5a6681e2 EC |
2 | /**************************************************************************** |
3 | * Driver for Solarflare network controllers and boards | |
4 | * Copyright 2005-2006 Fen Systems Ltd. | |
5 | * Copyright 2006-2013 Solarflare Communications Inc. | |
5a6681e2 EC |
6 | */ |
7 | ||
8 | #ifndef EF4_BITFIELD_H | |
9 | #define EF4_BITFIELD_H | |
10 | ||
11 | /* | |
12 | * Efx bitfield access | |
13 | * | |
14 | * Efx NICs make extensive use of bitfields up to 128 bits | |
15 | * wide. Since there is no native 128-bit datatype on most systems, | |
16 | * and since 64-bit datatypes are inefficient on 32-bit systems and | |
17 | * vice versa, we wrap accesses in a way that uses the most efficient | |
18 | * datatype. | |
19 | * | |
20 | * The NICs are PCI devices and therefore little-endian. Since most | |
21 | * of the quantities that we deal with are DMAed to/from host memory, | |
22 | * we define our datatypes (ef4_oword_t, ef4_qword_t and | |
23 | * ef4_dword_t) to be little-endian. | |
24 | */ | |
25 | ||
26 | /* Lowest bit numbers and widths */ | |
27 | #define EF4_DUMMY_FIELD_LBN 0 | |
28 | #define EF4_DUMMY_FIELD_WIDTH 0 | |
29 | #define EF4_WORD_0_LBN 0 | |
30 | #define EF4_WORD_0_WIDTH 16 | |
31 | #define EF4_WORD_1_LBN 16 | |
32 | #define EF4_WORD_1_WIDTH 16 | |
33 | #define EF4_DWORD_0_LBN 0 | |
34 | #define EF4_DWORD_0_WIDTH 32 | |
35 | #define EF4_DWORD_1_LBN 32 | |
36 | #define EF4_DWORD_1_WIDTH 32 | |
37 | #define EF4_DWORD_2_LBN 64 | |
38 | #define EF4_DWORD_2_WIDTH 32 | |
39 | #define EF4_DWORD_3_LBN 96 | |
40 | #define EF4_DWORD_3_WIDTH 32 | |
41 | #define EF4_QWORD_0_LBN 0 | |
42 | #define EF4_QWORD_0_WIDTH 64 | |
43 | ||
44 | /* Specified attribute (e.g. LBN) of the specified field */ | |
45 | #define EF4_VAL(field, attribute) field ## _ ## attribute | |
46 | /* Low bit number of the specified field */ | |
47 | #define EF4_LOW_BIT(field) EF4_VAL(field, LBN) | |
48 | /* Bit width of the specified field */ | |
49 | #define EF4_WIDTH(field) EF4_VAL(field, WIDTH) | |
50 | /* High bit number of the specified field */ | |
51 | #define EF4_HIGH_BIT(field) (EF4_LOW_BIT(field) + EF4_WIDTH(field) - 1) | |
52 | /* Mask equal in width to the specified field. | |
53 | * | |
54 | * For example, a field with width 5 would have a mask of 0x1f. | |
55 | * | |
56 | * The maximum width mask that can be generated is 64 bits. | |
57 | */ | |
58 | #define EF4_MASK64(width) \ | |
59 | ((width) == 64 ? ~((u64) 0) : \ | |
60 | (((((u64) 1) << (width))) - 1)) | |
61 | ||
62 | /* Mask equal in width to the specified field. | |
63 | * | |
64 | * For example, a field with width 5 would have a mask of 0x1f. | |
65 | * | |
66 | * The maximum width mask that can be generated is 32 bits. Use | |
67 | * EF4_MASK64 for higher width fields. | |
68 | */ | |
69 | #define EF4_MASK32(width) \ | |
70 | ((width) == 32 ? ~((u32) 0) : \ | |
71 | (((((u32) 1) << (width))) - 1)) | |
72 | ||
73 | /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */ | |
74 | typedef union ef4_dword { | |
75 | __le32 u32[1]; | |
76 | } ef4_dword_t; | |
77 | ||
78 | /* A quadword (i.e. 8 byte) datatype - little-endian in HW */ | |
79 | typedef union ef4_qword { | |
80 | __le64 u64[1]; | |
81 | __le32 u32[2]; | |
82 | ef4_dword_t dword[2]; | |
83 | } ef4_qword_t; | |
84 | ||
85 | /* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */ | |
86 | typedef union ef4_oword { | |
87 | __le64 u64[2]; | |
88 | ef4_qword_t qword[2]; | |
89 | __le32 u32[4]; | |
90 | ef4_dword_t dword[4]; | |
91 | } ef4_oword_t; | |
92 | ||
93 | /* Format string and value expanders for printk */ | |
94 | #define EF4_DWORD_FMT "%08x" | |
95 | #define EF4_QWORD_FMT "%08x:%08x" | |
96 | #define EF4_OWORD_FMT "%08x:%08x:%08x:%08x" | |
97 | #define EF4_DWORD_VAL(dword) \ | |
98 | ((unsigned int) le32_to_cpu((dword).u32[0])) | |
99 | #define EF4_QWORD_VAL(qword) \ | |
100 | ((unsigned int) le32_to_cpu((qword).u32[1])), \ | |
101 | ((unsigned int) le32_to_cpu((qword).u32[0])) | |
102 | #define EF4_OWORD_VAL(oword) \ | |
103 | ((unsigned int) le32_to_cpu((oword).u32[3])), \ | |
104 | ((unsigned int) le32_to_cpu((oword).u32[2])), \ | |
105 | ((unsigned int) le32_to_cpu((oword).u32[1])), \ | |
106 | ((unsigned int) le32_to_cpu((oword).u32[0])) | |
107 | ||
108 | /* | |
109 | * Extract bit field portion [low,high) from the native-endian element | |
110 | * which contains bits [min,max). | |
111 | * | |
112 | * For example, suppose "element" represents the high 32 bits of a | |
113 | * 64-bit value, and we wish to extract the bits belonging to the bit | |
114 | * field occupying bits 28-45 of this 64-bit value. | |
115 | * | |
116 | * Then EF4_EXTRACT ( element, 32, 63, 28, 45 ) would give | |
117 | * | |
118 | * ( element ) << 4 | |
119 | * | |
120 | * The result will contain the relevant bits filled in in the range | |
121 | * [0,high-low), with garbage in bits [high-low+1,...). | |
122 | */ | |
123 | #define EF4_EXTRACT_NATIVE(native_element, min, max, low, high) \ | |
124 | ((low) > (max) || (high) < (min) ? 0 : \ | |
125 | (low) > (min) ? \ | |
126 | (native_element) >> ((low) - (min)) : \ | |
127 | (native_element) << ((min) - (low))) | |
128 | ||
129 | /* | |
130 | * Extract bit field portion [low,high) from the 64-bit little-endian | |
131 | * element which contains bits [min,max) | |
132 | */ | |
133 | #define EF4_EXTRACT64(element, min, max, low, high) \ | |
134 | EF4_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high) | |
135 | ||
136 | /* | |
137 | * Extract bit field portion [low,high) from the 32-bit little-endian | |
138 | * element which contains bits [min,max) | |
139 | */ | |
140 | #define EF4_EXTRACT32(element, min, max, low, high) \ | |
141 | EF4_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high) | |
142 | ||
143 | #define EF4_EXTRACT_OWORD64(oword, low, high) \ | |
144 | ((EF4_EXTRACT64((oword).u64[0], 0, 63, low, high) | \ | |
145 | EF4_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \ | |
146 | EF4_MASK64((high) + 1 - (low))) | |
147 | ||
148 | #define EF4_EXTRACT_QWORD64(qword, low, high) \ | |
149 | (EF4_EXTRACT64((qword).u64[0], 0, 63, low, high) & \ | |
150 | EF4_MASK64((high) + 1 - (low))) | |
151 | ||
152 | #define EF4_EXTRACT_OWORD32(oword, low, high) \ | |
153 | ((EF4_EXTRACT32((oword).u32[0], 0, 31, low, high) | \ | |
154 | EF4_EXTRACT32((oword).u32[1], 32, 63, low, high) | \ | |
155 | EF4_EXTRACT32((oword).u32[2], 64, 95, low, high) | \ | |
156 | EF4_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \ | |
157 | EF4_MASK32((high) + 1 - (low))) | |
158 | ||
159 | #define EF4_EXTRACT_QWORD32(qword, low, high) \ | |
160 | ((EF4_EXTRACT32((qword).u32[0], 0, 31, low, high) | \ | |
161 | EF4_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \ | |
162 | EF4_MASK32((high) + 1 - (low))) | |
163 | ||
164 | #define EF4_EXTRACT_DWORD(dword, low, high) \ | |
165 | (EF4_EXTRACT32((dword).u32[0], 0, 31, low, high) & \ | |
166 | EF4_MASK32((high) + 1 - (low))) | |
167 | ||
168 | #define EF4_OWORD_FIELD64(oword, field) \ | |
169 | EF4_EXTRACT_OWORD64(oword, EF4_LOW_BIT(field), \ | |
170 | EF4_HIGH_BIT(field)) | |
171 | ||
172 | #define EF4_QWORD_FIELD64(qword, field) \ | |
173 | EF4_EXTRACT_QWORD64(qword, EF4_LOW_BIT(field), \ | |
174 | EF4_HIGH_BIT(field)) | |
175 | ||
176 | #define EF4_OWORD_FIELD32(oword, field) \ | |
177 | EF4_EXTRACT_OWORD32(oword, EF4_LOW_BIT(field), \ | |
178 | EF4_HIGH_BIT(field)) | |
179 | ||
180 | #define EF4_QWORD_FIELD32(qword, field) \ | |
181 | EF4_EXTRACT_QWORD32(qword, EF4_LOW_BIT(field), \ | |
182 | EF4_HIGH_BIT(field)) | |
183 | ||
184 | #define EF4_DWORD_FIELD(dword, field) \ | |
185 | EF4_EXTRACT_DWORD(dword, EF4_LOW_BIT(field), \ | |
186 | EF4_HIGH_BIT(field)) | |
187 | ||
188 | #define EF4_OWORD_IS_ZERO64(oword) \ | |
189 | (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0) | |
190 | ||
191 | #define EF4_QWORD_IS_ZERO64(qword) \ | |
192 | (((qword).u64[0]) == (__force __le64) 0) | |
193 | ||
194 | #define EF4_OWORD_IS_ZERO32(oword) \ | |
195 | (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \ | |
196 | == (__force __le32) 0) | |
197 | ||
198 | #define EF4_QWORD_IS_ZERO32(qword) \ | |
199 | (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0) | |
200 | ||
201 | #define EF4_DWORD_IS_ZERO(dword) \ | |
202 | (((dword).u32[0]) == (__force __le32) 0) | |
203 | ||
204 | #define EF4_OWORD_IS_ALL_ONES64(oword) \ | |
205 | (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0)) | |
206 | ||
207 | #define EF4_QWORD_IS_ALL_ONES64(qword) \ | |
208 | ((qword).u64[0] == ~((__force __le64) 0)) | |
209 | ||
210 | #define EF4_OWORD_IS_ALL_ONES32(oword) \ | |
211 | (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \ | |
212 | == ~((__force __le32) 0)) | |
213 | ||
214 | #define EF4_QWORD_IS_ALL_ONES32(qword) \ | |
215 | (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0)) | |
216 | ||
217 | #define EF4_DWORD_IS_ALL_ONES(dword) \ | |
218 | ((dword).u32[0] == ~((__force __le32) 0)) | |
219 | ||
220 | #if BITS_PER_LONG == 64 | |
221 | #define EF4_OWORD_FIELD EF4_OWORD_FIELD64 | |
222 | #define EF4_QWORD_FIELD EF4_QWORD_FIELD64 | |
223 | #define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO64 | |
224 | #define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO64 | |
225 | #define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES64 | |
226 | #define EF4_QWORD_IS_ALL_ONES EF4_QWORD_IS_ALL_ONES64 | |
227 | #else | |
228 | #define EF4_OWORD_FIELD EF4_OWORD_FIELD32 | |
229 | #define EF4_QWORD_FIELD EF4_QWORD_FIELD32 | |
230 | #define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO32 | |
231 | #define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO32 | |
232 | #define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES32 | |
233 | #define EF4_QWORD_IS_ALL_ONES EF4_QWORD_IS_ALL_ONES32 | |
234 | #endif | |
235 | ||
236 | /* | |
237 | * Construct bit field portion | |
238 | * | |
239 | * Creates the portion of the bit field [low,high) that lies within | |
240 | * the range [min,max). | |
241 | */ | |
242 | #define EF4_INSERT_NATIVE64(min, max, low, high, value) \ | |
243 | (((low > max) || (high < min)) ? 0 : \ | |
244 | ((low > min) ? \ | |
245 | (((u64) (value)) << (low - min)) : \ | |
246 | (((u64) (value)) >> (min - low)))) | |
247 | ||
248 | #define EF4_INSERT_NATIVE32(min, max, low, high, value) \ | |
249 | (((low > max) || (high < min)) ? 0 : \ | |
250 | ((low > min) ? \ | |
251 | (((u32) (value)) << (low - min)) : \ | |
252 | (((u32) (value)) >> (min - low)))) | |
253 | ||
254 | #define EF4_INSERT_NATIVE(min, max, low, high, value) \ | |
255 | ((((max - min) >= 32) || ((high - low) >= 32)) ? \ | |
256 | EF4_INSERT_NATIVE64(min, max, low, high, value) : \ | |
257 | EF4_INSERT_NATIVE32(min, max, low, high, value)) | |
258 | ||
259 | /* | |
260 | * Construct bit field portion | |
261 | * | |
262 | * Creates the portion of the named bit field that lies within the | |
263 | * range [min,max). | |
264 | */ | |
265 | #define EF4_INSERT_FIELD_NATIVE(min, max, field, value) \ | |
266 | EF4_INSERT_NATIVE(min, max, EF4_LOW_BIT(field), \ | |
267 | EF4_HIGH_BIT(field), value) | |
268 | ||
269 | /* | |
270 | * Construct bit field | |
271 | * | |
272 | * Creates the portion of the named bit fields that lie within the | |
273 | * range [min,max). | |
274 | */ | |
275 | #define EF4_INSERT_FIELDS_NATIVE(min, max, \ | |
276 | field1, value1, \ | |
277 | field2, value2, \ | |
278 | field3, value3, \ | |
279 | field4, value4, \ | |
280 | field5, value5, \ | |
281 | field6, value6, \ | |
282 | field7, value7, \ | |
283 | field8, value8, \ | |
284 | field9, value9, \ | |
285 | field10, value10) \ | |
286 | (EF4_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \ | |
287 | EF4_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \ | |
288 | EF4_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \ | |
289 | EF4_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \ | |
290 | EF4_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \ | |
291 | EF4_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \ | |
292 | EF4_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \ | |
293 | EF4_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \ | |
294 | EF4_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \ | |
295 | EF4_INSERT_FIELD_NATIVE((min), (max), field10, (value10))) | |
296 | ||
297 | #define EF4_INSERT_FIELDS64(...) \ | |
298 | cpu_to_le64(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__)) | |
299 | ||
300 | #define EF4_INSERT_FIELDS32(...) \ | |
301 | cpu_to_le32(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__)) | |
302 | ||
303 | #define EF4_POPULATE_OWORD64(oword, ...) do { \ | |
304 | (oword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ | |
305 | (oword).u64[1] = EF4_INSERT_FIELDS64(64, 127, __VA_ARGS__); \ | |
306 | } while (0) | |
307 | ||
308 | #define EF4_POPULATE_QWORD64(qword, ...) do { \ | |
309 | (qword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ | |
310 | } while (0) | |
311 | ||
312 | #define EF4_POPULATE_OWORD32(oword, ...) do { \ | |
313 | (oword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
314 | (oword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ | |
315 | (oword).u32[2] = EF4_INSERT_FIELDS32(64, 95, __VA_ARGS__); \ | |
316 | (oword).u32[3] = EF4_INSERT_FIELDS32(96, 127, __VA_ARGS__); \ | |
317 | } while (0) | |
318 | ||
319 | #define EF4_POPULATE_QWORD32(qword, ...) do { \ | |
320 | (qword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
321 | (qword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ | |
322 | } while (0) | |
323 | ||
324 | #define EF4_POPULATE_DWORD(dword, ...) do { \ | |
325 | (dword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
326 | } while (0) | |
327 | ||
328 | #if BITS_PER_LONG == 64 | |
329 | #define EF4_POPULATE_OWORD EF4_POPULATE_OWORD64 | |
330 | #define EF4_POPULATE_QWORD EF4_POPULATE_QWORD64 | |
331 | #else | |
332 | #define EF4_POPULATE_OWORD EF4_POPULATE_OWORD32 | |
333 | #define EF4_POPULATE_QWORD EF4_POPULATE_QWORD32 | |
334 | #endif | |
335 | ||
336 | /* Populate an octword field with various numbers of arguments */ | |
337 | #define EF4_POPULATE_OWORD_10 EF4_POPULATE_OWORD | |
338 | #define EF4_POPULATE_OWORD_9(oword, ...) \ | |
339 | EF4_POPULATE_OWORD_10(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
340 | #define EF4_POPULATE_OWORD_8(oword, ...) \ | |
341 | EF4_POPULATE_OWORD_9(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
342 | #define EF4_POPULATE_OWORD_7(oword, ...) \ | |
343 | EF4_POPULATE_OWORD_8(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
344 | #define EF4_POPULATE_OWORD_6(oword, ...) \ | |
345 | EF4_POPULATE_OWORD_7(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
346 | #define EF4_POPULATE_OWORD_5(oword, ...) \ | |
347 | EF4_POPULATE_OWORD_6(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
348 | #define EF4_POPULATE_OWORD_4(oword, ...) \ | |
349 | EF4_POPULATE_OWORD_5(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
350 | #define EF4_POPULATE_OWORD_3(oword, ...) \ | |
351 | EF4_POPULATE_OWORD_4(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
352 | #define EF4_POPULATE_OWORD_2(oword, ...) \ | |
353 | EF4_POPULATE_OWORD_3(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
354 | #define EF4_POPULATE_OWORD_1(oword, ...) \ | |
355 | EF4_POPULATE_OWORD_2(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
356 | #define EF4_ZERO_OWORD(oword) \ | |
357 | EF4_POPULATE_OWORD_1(oword, EF4_DUMMY_FIELD, 0) | |
358 | #define EF4_SET_OWORD(oword) \ | |
359 | EF4_POPULATE_OWORD_4(oword, \ | |
360 | EF4_DWORD_0, 0xffffffff, \ | |
361 | EF4_DWORD_1, 0xffffffff, \ | |
362 | EF4_DWORD_2, 0xffffffff, \ | |
363 | EF4_DWORD_3, 0xffffffff) | |
364 | ||
365 | /* Populate a quadword field with various numbers of arguments */ | |
366 | #define EF4_POPULATE_QWORD_10 EF4_POPULATE_QWORD | |
367 | #define EF4_POPULATE_QWORD_9(qword, ...) \ | |
368 | EF4_POPULATE_QWORD_10(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
369 | #define EF4_POPULATE_QWORD_8(qword, ...) \ | |
370 | EF4_POPULATE_QWORD_9(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
371 | #define EF4_POPULATE_QWORD_7(qword, ...) \ | |
372 | EF4_POPULATE_QWORD_8(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
373 | #define EF4_POPULATE_QWORD_6(qword, ...) \ | |
374 | EF4_POPULATE_QWORD_7(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
375 | #define EF4_POPULATE_QWORD_5(qword, ...) \ | |
376 | EF4_POPULATE_QWORD_6(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
377 | #define EF4_POPULATE_QWORD_4(qword, ...) \ | |
378 | EF4_POPULATE_QWORD_5(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
379 | #define EF4_POPULATE_QWORD_3(qword, ...) \ | |
380 | EF4_POPULATE_QWORD_4(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
381 | #define EF4_POPULATE_QWORD_2(qword, ...) \ | |
382 | EF4_POPULATE_QWORD_3(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
383 | #define EF4_POPULATE_QWORD_1(qword, ...) \ | |
384 | EF4_POPULATE_QWORD_2(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
385 | #define EF4_ZERO_QWORD(qword) \ | |
386 | EF4_POPULATE_QWORD_1(qword, EF4_DUMMY_FIELD, 0) | |
387 | #define EF4_SET_QWORD(qword) \ | |
388 | EF4_POPULATE_QWORD_2(qword, \ | |
389 | EF4_DWORD_0, 0xffffffff, \ | |
390 | EF4_DWORD_1, 0xffffffff) | |
391 | ||
392 | /* Populate a dword field with various numbers of arguments */ | |
393 | #define EF4_POPULATE_DWORD_10 EF4_POPULATE_DWORD | |
394 | #define EF4_POPULATE_DWORD_9(dword, ...) \ | |
395 | EF4_POPULATE_DWORD_10(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
396 | #define EF4_POPULATE_DWORD_8(dword, ...) \ | |
397 | EF4_POPULATE_DWORD_9(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
398 | #define EF4_POPULATE_DWORD_7(dword, ...) \ | |
399 | EF4_POPULATE_DWORD_8(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
400 | #define EF4_POPULATE_DWORD_6(dword, ...) \ | |
401 | EF4_POPULATE_DWORD_7(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
402 | #define EF4_POPULATE_DWORD_5(dword, ...) \ | |
403 | EF4_POPULATE_DWORD_6(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
404 | #define EF4_POPULATE_DWORD_4(dword, ...) \ | |
405 | EF4_POPULATE_DWORD_5(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
406 | #define EF4_POPULATE_DWORD_3(dword, ...) \ | |
407 | EF4_POPULATE_DWORD_4(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
408 | #define EF4_POPULATE_DWORD_2(dword, ...) \ | |
409 | EF4_POPULATE_DWORD_3(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
410 | #define EF4_POPULATE_DWORD_1(dword, ...) \ | |
411 | EF4_POPULATE_DWORD_2(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) | |
412 | #define EF4_ZERO_DWORD(dword) \ | |
413 | EF4_POPULATE_DWORD_1(dword, EF4_DUMMY_FIELD, 0) | |
414 | #define EF4_SET_DWORD(dword) \ | |
415 | EF4_POPULATE_DWORD_1(dword, EF4_DWORD_0, 0xffffffff) | |
416 | ||
417 | /* | |
418 | * Modify a named field within an already-populated structure. Used | |
419 | * for read-modify-write operations. | |
420 | * | |
421 | */ | |
422 | #define EF4_INVERT_OWORD(oword) do { \ | |
423 | (oword).u64[0] = ~((oword).u64[0]); \ | |
424 | (oword).u64[1] = ~((oword).u64[1]); \ | |
425 | } while (0) | |
426 | ||
427 | #define EF4_AND_OWORD(oword, from, mask) \ | |
428 | do { \ | |
429 | (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \ | |
430 | (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \ | |
431 | } while (0) | |
432 | ||
433 | #define EF4_OR_OWORD(oword, from, mask) \ | |
434 | do { \ | |
435 | (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \ | |
436 | (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \ | |
437 | } while (0) | |
438 | ||
439 | #define EF4_INSERT64(min, max, low, high, value) \ | |
440 | cpu_to_le64(EF4_INSERT_NATIVE(min, max, low, high, value)) | |
441 | ||
442 | #define EF4_INSERT32(min, max, low, high, value) \ | |
443 | cpu_to_le32(EF4_INSERT_NATIVE(min, max, low, high, value)) | |
444 | ||
445 | #define EF4_INPLACE_MASK64(min, max, low, high) \ | |
446 | EF4_INSERT64(min, max, low, high, EF4_MASK64((high) + 1 - (low))) | |
447 | ||
448 | #define EF4_INPLACE_MASK32(min, max, low, high) \ | |
449 | EF4_INSERT32(min, max, low, high, EF4_MASK32((high) + 1 - (low))) | |
450 | ||
451 | #define EF4_SET_OWORD64(oword, low, high, value) do { \ | |
452 | (oword).u64[0] = (((oword).u64[0] \ | |
453 | & ~EF4_INPLACE_MASK64(0, 63, low, high)) \ | |
454 | | EF4_INSERT64(0, 63, low, high, value)); \ | |
455 | (oword).u64[1] = (((oword).u64[1] \ | |
456 | & ~EF4_INPLACE_MASK64(64, 127, low, high)) \ | |
457 | | EF4_INSERT64(64, 127, low, high, value)); \ | |
458 | } while (0) | |
459 | ||
460 | #define EF4_SET_QWORD64(qword, low, high, value) do { \ | |
461 | (qword).u64[0] = (((qword).u64[0] \ | |
462 | & ~EF4_INPLACE_MASK64(0, 63, low, high)) \ | |
463 | | EF4_INSERT64(0, 63, low, high, value)); \ | |
464 | } while (0) | |
465 | ||
466 | #define EF4_SET_OWORD32(oword, low, high, value) do { \ | |
467 | (oword).u32[0] = (((oword).u32[0] \ | |
468 | & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ | |
469 | | EF4_INSERT32(0, 31, low, high, value)); \ | |
470 | (oword).u32[1] = (((oword).u32[1] \ | |
471 | & ~EF4_INPLACE_MASK32(32, 63, low, high)) \ | |
472 | | EF4_INSERT32(32, 63, low, high, value)); \ | |
473 | (oword).u32[2] = (((oword).u32[2] \ | |
474 | & ~EF4_INPLACE_MASK32(64, 95, low, high)) \ | |
475 | | EF4_INSERT32(64, 95, low, high, value)); \ | |
476 | (oword).u32[3] = (((oword).u32[3] \ | |
477 | & ~EF4_INPLACE_MASK32(96, 127, low, high)) \ | |
478 | | EF4_INSERT32(96, 127, low, high, value)); \ | |
479 | } while (0) | |
480 | ||
481 | #define EF4_SET_QWORD32(qword, low, high, value) do { \ | |
482 | (qword).u32[0] = (((qword).u32[0] \ | |
483 | & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ | |
484 | | EF4_INSERT32(0, 31, low, high, value)); \ | |
485 | (qword).u32[1] = (((qword).u32[1] \ | |
486 | & ~EF4_INPLACE_MASK32(32, 63, low, high)) \ | |
487 | | EF4_INSERT32(32, 63, low, high, value)); \ | |
488 | } while (0) | |
489 | ||
490 | #define EF4_SET_DWORD32(dword, low, high, value) do { \ | |
491 | (dword).u32[0] = (((dword).u32[0] \ | |
492 | & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ | |
493 | | EF4_INSERT32(0, 31, low, high, value)); \ | |
494 | } while (0) | |
495 | ||
496 | #define EF4_SET_OWORD_FIELD64(oword, field, value) \ | |
497 | EF4_SET_OWORD64(oword, EF4_LOW_BIT(field), \ | |
498 | EF4_HIGH_BIT(field), value) | |
499 | ||
500 | #define EF4_SET_QWORD_FIELD64(qword, field, value) \ | |
501 | EF4_SET_QWORD64(qword, EF4_LOW_BIT(field), \ | |
502 | EF4_HIGH_BIT(field), value) | |
503 | ||
504 | #define EF4_SET_OWORD_FIELD32(oword, field, value) \ | |
505 | EF4_SET_OWORD32(oword, EF4_LOW_BIT(field), \ | |
506 | EF4_HIGH_BIT(field), value) | |
507 | ||
508 | #define EF4_SET_QWORD_FIELD32(qword, field, value) \ | |
509 | EF4_SET_QWORD32(qword, EF4_LOW_BIT(field), \ | |
510 | EF4_HIGH_BIT(field), value) | |
511 | ||
512 | #define EF4_SET_DWORD_FIELD(dword, field, value) \ | |
513 | EF4_SET_DWORD32(dword, EF4_LOW_BIT(field), \ | |
514 | EF4_HIGH_BIT(field), value) | |
515 | ||
516 | ||
517 | ||
518 | #if BITS_PER_LONG == 64 | |
519 | #define EF4_SET_OWORD_FIELD EF4_SET_OWORD_FIELD64 | |
520 | #define EF4_SET_QWORD_FIELD EF4_SET_QWORD_FIELD64 | |
521 | #else | |
522 | #define EF4_SET_OWORD_FIELD EF4_SET_OWORD_FIELD32 | |
523 | #define EF4_SET_QWORD_FIELD EF4_SET_QWORD_FIELD32 | |
524 | #endif | |
525 | ||
526 | /* Used to avoid compiler warnings about shift range exceeding width | |
527 | * of the data types when dma_addr_t is only 32 bits wide. | |
528 | */ | |
529 | #define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t)) | |
530 | #define EF4_DMA_TYPE_WIDTH(width) \ | |
531 | (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH) | |
532 | ||
533 | ||
534 | /* Static initialiser */ | |
535 | #define EF4_OWORD32(a, b, c, d) \ | |
536 | { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \ | |
537 | cpu_to_le32(c), cpu_to_le32(d) } } | |
538 | ||
539 | #endif /* EF4_BITFIELD_H */ |