1/* SPDX-License-Identifier: GPL-2.0-only */
2/****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2005-2006 Fen Systems Ltd.
5 * Copyright 2006-2013 Solarflare Communications Inc.
6 */
7
8#ifndef EFX_BITFIELD_H
9#define EFX_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 (efx_oword_t, efx_qword_t and
23 * efx_dword_t) to be little-endian.
24 */
25
26/* Lowest bit numbers and widths */
27#define EFX_DUMMY_FIELD_LBN 0
28#define EFX_DUMMY_FIELD_WIDTH 0
29#define EFX_WORD_0_LBN 0
30#define EFX_WORD_0_WIDTH 16
31#define EFX_WORD_1_LBN 16
32#define EFX_WORD_1_WIDTH 16
33#define EFX_DWORD_0_LBN 0
34#define EFX_DWORD_0_WIDTH 32
35#define EFX_DWORD_1_LBN 32
36#define EFX_DWORD_1_WIDTH 32
37#define EFX_DWORD_2_LBN 64
38#define EFX_DWORD_2_WIDTH 32
39#define EFX_DWORD_3_LBN 96
40#define EFX_DWORD_3_WIDTH 32
41#define EFX_QWORD_0_LBN 0
42#define EFX_QWORD_0_WIDTH 64
43
44/* Specified attribute (e.g. LBN) of the specified field */
45#define EFX_VAL(field, attribute) field ## _ ## attribute
46/* Low bit number of the specified field */
47#define EFX_LOW_BIT(field) EFX_VAL(field, LBN)
48/* Bit width of the specified field */
49#define EFX_WIDTH(field) EFX_VAL(field, WIDTH)
50/* High bit number of the specified field */
51#define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_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 EFX_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 * EFX_MASK64 for higher width fields.
68 */
69#define EFX_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 */
74typedef union efx_dword {
75 __le32 u32[1];
76} efx_dword_t;
77
78/* A quadword (i.e. 8 byte) datatype - little-endian in HW */
79typedef union efx_qword {
80 __le64 u64[1];
81 __le32 u32[2];
82 efx_dword_t dword[2];
83} efx_qword_t;
84
85/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
86typedef union efx_oword {
87 __le64 u64[2];
88 efx_qword_t qword[2];
89 __le32 u32[4];
90 efx_dword_t dword[4];
91} efx_oword_t;
92
93/* Format string and value expanders for printk */
94#define EFX_DWORD_FMT "%08x"
95#define EFX_QWORD_FMT "%08x:%08x"
96#define EFX_OWORD_FMT "%08x:%08x:%08x:%08x"
97#define EFX_DWORD_VAL(dword) \
98 ((unsigned int) le32_to_cpu((dword).u32[0]))
99#define EFX_QWORD_VAL(qword) \
100 ((unsigned int) le32_to_cpu((qword).u32[1])), \
101 ((unsigned int) le32_to_cpu((qword).u32[0]))
102#define EFX_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 EFX_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 EFX_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 EFX_EXTRACT64(element, min, max, low, high) \
134 EFX_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 EFX_EXTRACT32(element, min, max, low, high) \
141 EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
142
143#define EFX_EXTRACT_OWORD64(oword, low, high) \
144 ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \
145 EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \
146 EFX_MASK64((high) + 1 - (low)))
147
148#define EFX_EXTRACT_QWORD64(qword, low, high) \
149 (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \
150 EFX_MASK64((high) + 1 - (low)))
151
152#define EFX_EXTRACT_OWORD32(oword, low, high) \
153 ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \
154 EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \
155 EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \
156 EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \
157 EFX_MASK32((high) + 1 - (low)))
158
159#define EFX_EXTRACT_QWORD32(qword, low, high) \
160 ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \
161 EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \
162 EFX_MASK32((high) + 1 - (low)))
163
164#define EFX_EXTRACT_DWORD(dword, low, high) \
165 (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \
166 EFX_MASK32((high) + 1 - (low)))
167
168#define EFX_OWORD_FIELD64(oword, field) \
169 EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \
170 EFX_HIGH_BIT(field))
171
172#define EFX_QWORD_FIELD64(qword, field) \
173 EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \
174 EFX_HIGH_BIT(field))
175
176#define EFX_OWORD_FIELD32(oword, field) \
177 EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \
178 EFX_HIGH_BIT(field))
179
180#define EFX_QWORD_FIELD32(qword, field) \
181 EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \
182 EFX_HIGH_BIT(field))
183
184#define EFX_DWORD_FIELD(dword, field) \
185 EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \
186 EFX_HIGH_BIT(field))
187
188#define EFX_OWORD_IS_ZERO64(oword) \
189 (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
190
191#define EFX_QWORD_IS_ZERO64(qword) \
192 (((qword).u64[0]) == (__force __le64) 0)
193
194#define EFX_OWORD_IS_ZERO32(oword) \
195 (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
196 == (__force __le32) 0)
197
198#define EFX_QWORD_IS_ZERO32(qword) \
199 (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
200
201#define EFX_DWORD_IS_ZERO(dword) \
202 (((dword).u32[0]) == (__force __le32) 0)
203
204#define EFX_OWORD_IS_ALL_ONES64(oword) \
205 (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
206
207#define EFX_QWORD_IS_ALL_ONES64(qword) \
208 ((qword).u64[0] == ~((__force __le64) 0))
209
210#define EFX_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 EFX_QWORD_IS_ALL_ONES32(qword) \
215 (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
216
217#define EFX_DWORD_IS_ALL_ONES(dword) \
218 ((dword).u32[0] == ~((__force __le32) 0))
219
220#if BITS_PER_LONG == 64
221#define EFX_OWORD_FIELD EFX_OWORD_FIELD64
222#define EFX_QWORD_FIELD EFX_QWORD_FIELD64
223#define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64
224#define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64
225#define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64
226#define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64
227#else
228#define EFX_OWORD_FIELD EFX_OWORD_FIELD32
229#define EFX_QWORD_FIELD EFX_QWORD_FIELD32
230#define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32
231#define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32
232#define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32
233#define EFX_QWORD_IS_ALL_ONES EFX_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 EFX_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 EFX_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 EFX_INSERT_NATIVE(min, max, low, high, value) \
255 ((((max - min) >= 32) || ((high - low) >= 32)) ? \
256 EFX_INSERT_NATIVE64(min, max, low, high, value) : \
257 EFX_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 EFX_INSERT_FIELD_NATIVE(min, max, field, value) \
266 EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \
267 EFX_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 EFX_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 field11, value11, \
287 field12, value12, \
288 field13, value13, \
289 field14, value14, \
290 field15, value15, \
291 field16, value16, \
292 field17, value17, \
293 field18, value18, \
294 field19, value19) \
295 (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \
296 EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \
297 EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \
298 EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \
299 EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \
300 EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \
301 EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \
302 EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \
303 EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \
304 EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)) | \
305 EFX_INSERT_FIELD_NATIVE((min), (max), field11, (value11)) | \
306 EFX_INSERT_FIELD_NATIVE((min), (max), field12, (value12)) | \
307 EFX_INSERT_FIELD_NATIVE((min), (max), field13, (value13)) | \
308 EFX_INSERT_FIELD_NATIVE((min), (max), field14, (value14)) | \
309 EFX_INSERT_FIELD_NATIVE((min), (max), field15, (value15)) | \
310 EFX_INSERT_FIELD_NATIVE((min), (max), field16, (value16)) | \
311 EFX_INSERT_FIELD_NATIVE((min), (max), field17, (value17)) | \
312 EFX_INSERT_FIELD_NATIVE((min), (max), field18, (value18)) | \
313 EFX_INSERT_FIELD_NATIVE((min), (max), field19, (value19)))
314
315#define EFX_INSERT_FIELDS64(...) \
316 cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
317
318#define EFX_INSERT_FIELDS32(...) \
319 cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
320
321#define EFX_POPULATE_OWORD64(oword, ...) do { \
322 (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
323 (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \
324 } while (0)
325
326#define EFX_POPULATE_QWORD64(qword, ...) do { \
327 (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
328 } while (0)
329
330#define EFX_POPULATE_OWORD32(oword, ...) do { \
331 (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
332 (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
333 (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \
334 (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \
335 } while (0)
336
337#define EFX_POPULATE_QWORD32(qword, ...) do { \
338 (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
339 (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
340 } while (0)
341
342#define EFX_POPULATE_DWORD(dword, ...) do { \
343 (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
344 } while (0)
345
346#if BITS_PER_LONG == 64
347#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64
348#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64
349#else
350#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32
351#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32
352#endif
353
354/* Populate an octword field with various numbers of arguments */
355#define EFX_POPULATE_OWORD_19 EFX_POPULATE_OWORD
356#define EFX_POPULATE_OWORD_18(oword, ...) \
357 EFX_POPULATE_OWORD_19(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
358#define EFX_POPULATE_OWORD_17(oword, ...) \
359 EFX_POPULATE_OWORD_18(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
360#define EFX_POPULATE_OWORD_16(oword, ...) \
361 EFX_POPULATE_OWORD_17(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
362#define EFX_POPULATE_OWORD_15(oword, ...) \
363 EFX_POPULATE_OWORD_16(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
364#define EFX_POPULATE_OWORD_14(oword, ...) \
365 EFX_POPULATE_OWORD_15(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
366#define EFX_POPULATE_OWORD_13(oword, ...) \
367 EFX_POPULATE_OWORD_14(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
368#define EFX_POPULATE_OWORD_12(oword, ...) \
369 EFX_POPULATE_OWORD_13(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
370#define EFX_POPULATE_OWORD_11(oword, ...) \
371 EFX_POPULATE_OWORD_12(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
372#define EFX_POPULATE_OWORD_10(oword, ...) \
373 EFX_POPULATE_OWORD_11(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
374#define EFX_POPULATE_OWORD_9(oword, ...) \
375 EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
376#define EFX_POPULATE_OWORD_8(oword, ...) \
377 EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
378#define EFX_POPULATE_OWORD_7(oword, ...) \
379 EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
380#define EFX_POPULATE_OWORD_6(oword, ...) \
381 EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
382#define EFX_POPULATE_OWORD_5(oword, ...) \
383 EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
384#define EFX_POPULATE_OWORD_4(oword, ...) \
385 EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
386#define EFX_POPULATE_OWORD_3(oword, ...) \
387 EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
388#define EFX_POPULATE_OWORD_2(oword, ...) \
389 EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
390#define EFX_POPULATE_OWORD_1(oword, ...) \
391 EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
392#define EFX_ZERO_OWORD(oword) \
393 EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0)
394#define EFX_SET_OWORD(oword) \
395 EFX_POPULATE_OWORD_4(oword, \
396 EFX_DWORD_0, 0xffffffff, \
397 EFX_DWORD_1, 0xffffffff, \
398 EFX_DWORD_2, 0xffffffff, \
399 EFX_DWORD_3, 0xffffffff)
400
401/* Populate a quadword field with various numbers of arguments */
402#define EFX_POPULATE_QWORD_19 EFX_POPULATE_QWORD
403#define EFX_POPULATE_QWORD_18(qword, ...) \
404 EFX_POPULATE_QWORD_19(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
405#define EFX_POPULATE_QWORD_17(qword, ...) \
406 EFX_POPULATE_QWORD_18(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
407#define EFX_POPULATE_QWORD_16(qword, ...) \
408 EFX_POPULATE_QWORD_17(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
409#define EFX_POPULATE_QWORD_15(qword, ...) \
410 EFX_POPULATE_QWORD_16(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
411#define EFX_POPULATE_QWORD_14(qword, ...) \
412 EFX_POPULATE_QWORD_15(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
413#define EFX_POPULATE_QWORD_13(qword, ...) \
414 EFX_POPULATE_QWORD_14(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
415#define EFX_POPULATE_QWORD_12(qword, ...) \
416 EFX_POPULATE_QWORD_13(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
417#define EFX_POPULATE_QWORD_11(qword, ...) \
418 EFX_POPULATE_QWORD_12(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
419#define EFX_POPULATE_QWORD_10(qword, ...) \
420 EFX_POPULATE_QWORD_11(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
421#define EFX_POPULATE_QWORD_9(qword, ...) \
422 EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
423#define EFX_POPULATE_QWORD_8(qword, ...) \
424 EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
425#define EFX_POPULATE_QWORD_7(qword, ...) \
426 EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
427#define EFX_POPULATE_QWORD_6(qword, ...) \
428 EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
429#define EFX_POPULATE_QWORD_5(qword, ...) \
430 EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
431#define EFX_POPULATE_QWORD_4(qword, ...) \
432 EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
433#define EFX_POPULATE_QWORD_3(qword, ...) \
434 EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
435#define EFX_POPULATE_QWORD_2(qword, ...) \
436 EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
437#define EFX_POPULATE_QWORD_1(qword, ...) \
438 EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
439#define EFX_ZERO_QWORD(qword) \
440 EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0)
441#define EFX_SET_QWORD(qword) \
442 EFX_POPULATE_QWORD_2(qword, \
443 EFX_DWORD_0, 0xffffffff, \
444 EFX_DWORD_1, 0xffffffff)
445
446/* Populate a dword field with various numbers of arguments */
447#define EFX_POPULATE_DWORD_19 EFX_POPULATE_DWORD
448#define EFX_POPULATE_DWORD_18(dword, ...) \
449 EFX_POPULATE_DWORD_19(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
450#define EFX_POPULATE_DWORD_17(dword, ...) \
451 EFX_POPULATE_DWORD_18(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
452#define EFX_POPULATE_DWORD_16(dword, ...) \
453 EFX_POPULATE_DWORD_17(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
454#define EFX_POPULATE_DWORD_15(dword, ...) \
455 EFX_POPULATE_DWORD_16(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
456#define EFX_POPULATE_DWORD_14(dword, ...) \
457 EFX_POPULATE_DWORD_15(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
458#define EFX_POPULATE_DWORD_13(dword, ...) \
459 EFX_POPULATE_DWORD_14(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
460#define EFX_POPULATE_DWORD_12(dword, ...) \
461 EFX_POPULATE_DWORD_13(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
462#define EFX_POPULATE_DWORD_11(dword, ...) \
463 EFX_POPULATE_DWORD_12(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
464#define EFX_POPULATE_DWORD_10(dword, ...) \
465 EFX_POPULATE_DWORD_11(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
466#define EFX_POPULATE_DWORD_9(dword, ...) \
467 EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
468#define EFX_POPULATE_DWORD_8(dword, ...) \
469 EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
470#define EFX_POPULATE_DWORD_7(dword, ...) \
471 EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
472#define EFX_POPULATE_DWORD_6(dword, ...) \
473 EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
474#define EFX_POPULATE_DWORD_5(dword, ...) \
475 EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
476#define EFX_POPULATE_DWORD_4(dword, ...) \
477 EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
478#define EFX_POPULATE_DWORD_3(dword, ...) \
479 EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
480#define EFX_POPULATE_DWORD_2(dword, ...) \
481 EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
482#define EFX_POPULATE_DWORD_1(dword, ...) \
483 EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
484#define EFX_ZERO_DWORD(dword) \
485 EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0)
486#define EFX_SET_DWORD(dword) \
487 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff)
488
489/*
490 * Modify a named field within an already-populated structure. Used
491 * for read-modify-write operations.
492 *
493 */
494#define EFX_INVERT_OWORD(oword) do { \
495 (oword).u64[0] = ~((oword).u64[0]); \
496 (oword).u64[1] = ~((oword).u64[1]); \
497 } while (0)
498
499#define EFX_AND_OWORD(oword, from, mask) \
500 do { \
501 (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \
502 (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \
503 } while (0)
504
505#define EFX_AND_QWORD(qword, from, mask) \
506 (qword).u64[0] = (from).u64[0] & (mask).u64[0]
507
508#define EFX_OR_OWORD(oword, from, mask) \
509 do { \
510 (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \
511 (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \
512 } while (0)
513
514#define EFX_INSERT64(min, max, low, high, value) \
515 cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value))
516
517#define EFX_INSERT32(min, max, low, high, value) \
518 cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value))
519
520#define EFX_INPLACE_MASK64(min, max, low, high) \
521 EFX_INSERT64(min, max, low, high, EFX_MASK64((high) + 1 - (low)))
522
523#define EFX_INPLACE_MASK32(min, max, low, high) \
524 EFX_INSERT32(min, max, low, high, EFX_MASK32((high) + 1 - (low)))
525
526#define EFX_SET_OWORD64(oword, low, high, value) do { \
527 (oword).u64[0] = (((oword).u64[0] \
528 & ~EFX_INPLACE_MASK64(0, 63, low, high)) \
529 | EFX_INSERT64(0, 63, low, high, value)); \
530 (oword).u64[1] = (((oword).u64[1] \
531 & ~EFX_INPLACE_MASK64(64, 127, low, high)) \
532 | EFX_INSERT64(64, 127, low, high, value)); \
533 } while (0)
534
535#define EFX_SET_QWORD64(qword, low, high, value) do { \
536 (qword).u64[0] = (((qword).u64[0] \
537 & ~EFX_INPLACE_MASK64(0, 63, low, high)) \
538 | EFX_INSERT64(0, 63, low, high, value)); \
539 } while (0)
540
541#define EFX_SET_OWORD32(oword, low, high, value) do { \
542 (oword).u32[0] = (((oword).u32[0] \
543 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
544 | EFX_INSERT32(0, 31, low, high, value)); \
545 (oword).u32[1] = (((oword).u32[1] \
546 & ~EFX_INPLACE_MASK32(32, 63, low, high)) \
547 | EFX_INSERT32(32, 63, low, high, value)); \
548 (oword).u32[2] = (((oword).u32[2] \
549 & ~EFX_INPLACE_MASK32(64, 95, low, high)) \
550 | EFX_INSERT32(64, 95, low, high, value)); \
551 (oword).u32[3] = (((oword).u32[3] \
552 & ~EFX_INPLACE_MASK32(96, 127, low, high)) \
553 | EFX_INSERT32(96, 127, low, high, value)); \
554 } while (0)
555
556#define EFX_SET_QWORD32(qword, low, high, value) do { \
557 (qword).u32[0] = (((qword).u32[0] \
558 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
559 | EFX_INSERT32(0, 31, low, high, value)); \
560 (qword).u32[1] = (((qword).u32[1] \
561 & ~EFX_INPLACE_MASK32(32, 63, low, high)) \
562 | EFX_INSERT32(32, 63, low, high, value)); \
563 } while (0)
564
565#define EFX_SET_DWORD32(dword, low, high, value) do { \
566 (dword).u32[0] = (((dword).u32[0] \
567 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
568 | EFX_INSERT32(0, 31, low, high, value)); \
569 } while (0)
570
571#define EFX_SET_OWORD_FIELD64(oword, field, value) \
572 EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \
573 EFX_HIGH_BIT(field), value)
574
575#define EFX_SET_QWORD_FIELD64(qword, field, value) \
576 EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \
577 EFX_HIGH_BIT(field), value)
578
579#define EFX_SET_OWORD_FIELD32(oword, field, value) \
580 EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \
581 EFX_HIGH_BIT(field), value)
582
583#define EFX_SET_QWORD_FIELD32(qword, field, value) \
584 EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \
585 EFX_HIGH_BIT(field), value)
586
587#define EFX_SET_DWORD_FIELD(dword, field, value) \
588 EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \
589 EFX_HIGH_BIT(field), value)
590
591
592
593#if BITS_PER_LONG == 64
594#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64
595#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64
596#else
597#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32
598#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32
599#endif
600
601/* Used to avoid compiler warnings about shift range exceeding width
602 * of the data types when dma_addr_t is only 32 bits wide.
603 */
604#define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t))
605#define EFX_DMA_TYPE_WIDTH(width) \
606 (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
607
608
609/* Static initialiser */
610#define EFX_OWORD32(a, b, c, d) \
611 { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \
612 cpu_to_le32(c), cpu_to_le32(d) } }
613
614#endif /* EFX_BITFIELD_H */
615

source code of linux/drivers/net/ethernet/sfc/siena/bitfield.h