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_BYTE_0_LBN 0
30#define EFX_BYTE_0_WIDTH 8
31#define EFX_WORD_0_LBN 0
32#define EFX_WORD_0_WIDTH 16
33#define EFX_WORD_1_LBN 16
34#define EFX_WORD_1_WIDTH 16
35#define EFX_DWORD_0_LBN 0
36#define EFX_DWORD_0_WIDTH 32
37#define EFX_DWORD_1_LBN 32
38#define EFX_DWORD_1_WIDTH 32
39#define EFX_DWORD_2_LBN 64
40#define EFX_DWORD_2_WIDTH 32
41#define EFX_DWORD_3_LBN 96
42#define EFX_DWORD_3_WIDTH 32
43#define EFX_QWORD_0_LBN 0
44#define EFX_QWORD_0_WIDTH 64
45
46/* Specified attribute (e.g. LBN) of the specified field */
47#define EFX_VAL(field, attribute) field ## _ ## attribute
48/* Low bit number of the specified field */
49#define EFX_LOW_BIT(field) EFX_VAL(field, LBN)
50/* Bit width of the specified field */
51#define EFX_WIDTH(field) EFX_VAL(field, WIDTH)
52/* High bit number of the specified field */
53#define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1)
54/* Mask equal in width to the specified field.
55 *
56 * For example, a field with width 5 would have a mask of 0x1f.
57 *
58 * The maximum width mask that can be generated is 64 bits.
59 */
60#define EFX_MASK64(width) \
61 ((width) == 64 ? ~((u64) 0) : \
62 (((((u64) 1) << (width))) - 1))
63
64/* Mask equal in width to the specified field.
65 *
66 * For example, a field with width 5 would have a mask of 0x1f.
67 *
68 * The maximum width mask that can be generated is 32 bits. Use
69 * EFX_MASK64 for higher width fields.
70 */
71#define EFX_MASK32(width) \
72 ((width) == 32 ? ~((u32) 0) : \
73 (((((u32) 1) << (width))) - 1))
74
75/* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
76typedef union efx_dword {
77 __le32 u32[1];
78} efx_dword_t;
79
80/* A quadword (i.e. 8 byte) datatype - little-endian in HW */
81typedef union efx_qword {
82 __le64 u64[1];
83 __le32 u32[2];
84 efx_dword_t dword[2];
85} efx_qword_t;
86
87/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
88typedef union efx_oword {
89 __le64 u64[2];
90 efx_qword_t qword[2];
91 __le32 u32[4];
92 efx_dword_t dword[4];
93} efx_oword_t;
94
95/* Format string and value expanders for printk */
96#define EFX_DWORD_FMT "%08x"
97#define EFX_QWORD_FMT "%08x:%08x"
98#define EFX_OWORD_FMT "%08x:%08x:%08x:%08x"
99#define EFX_DWORD_VAL(dword) \
100 ((unsigned int) le32_to_cpu((dword).u32[0]))
101#define EFX_QWORD_VAL(qword) \
102 ((unsigned int) le32_to_cpu((qword).u32[1])), \
103 ((unsigned int) le32_to_cpu((qword).u32[0]))
104#define EFX_OWORD_VAL(oword) \
105 ((unsigned int) le32_to_cpu((oword).u32[3])), \
106 ((unsigned int) le32_to_cpu((oword).u32[2])), \
107 ((unsigned int) le32_to_cpu((oword).u32[1])), \
108 ((unsigned int) le32_to_cpu((oword).u32[0]))
109
110/*
111 * Extract bit field portion [low,high) from the native-endian element
112 * which contains bits [min,max).
113 *
114 * For example, suppose "element" represents the high 32 bits of a
115 * 64-bit value, and we wish to extract the bits belonging to the bit
116 * field occupying bits 28-45 of this 64-bit value.
117 *
118 * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give
119 *
120 * ( element ) << 4
121 *
122 * The result will contain the relevant bits filled in in the range
123 * [0,high-low), with garbage in bits [high-low+1,...).
124 */
125#define EFX_EXTRACT_NATIVE(native_element, min, max, low, high) \
126 ((low) > (max) || (high) < (min) ? 0 : \
127 (low) > (min) ? \
128 (native_element) >> ((low) - (min)) : \
129 (native_element) << ((min) - (low)))
130
131/*
132 * Extract bit field portion [low,high) from the 64-bit little-endian
133 * element which contains bits [min,max)
134 */
135#define EFX_EXTRACT64(element, min, max, low, high) \
136 EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
137
138/*
139 * Extract bit field portion [low,high) from the 32-bit little-endian
140 * element which contains bits [min,max)
141 */
142#define EFX_EXTRACT32(element, min, max, low, high) \
143 EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
144
145#define EFX_EXTRACT_OWORD64(oword, low, high) \
146 ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \
147 EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \
148 EFX_MASK64((high) + 1 - (low)))
149
150#define EFX_EXTRACT_QWORD64(qword, low, high) \
151 (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \
152 EFX_MASK64((high) + 1 - (low)))
153
154#define EFX_EXTRACT_OWORD32(oword, low, high) \
155 ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \
156 EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \
157 EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \
158 EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \
159 EFX_MASK32((high) + 1 - (low)))
160
161#define EFX_EXTRACT_QWORD32(qword, low, high) \
162 ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \
163 EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \
164 EFX_MASK32((high) + 1 - (low)))
165
166#define EFX_EXTRACT_DWORD(dword, low, high) \
167 (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \
168 EFX_MASK32((high) + 1 - (low)))
169
170#define EFX_OWORD_FIELD64(oword, field) \
171 EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \
172 EFX_HIGH_BIT(field))
173
174#define EFX_QWORD_FIELD64(qword, field) \
175 EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \
176 EFX_HIGH_BIT(field))
177
178#define EFX_OWORD_FIELD32(oword, field) \
179 EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \
180 EFX_HIGH_BIT(field))
181
182#define EFX_QWORD_FIELD32(qword, field) \
183 EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \
184 EFX_HIGH_BIT(field))
185
186#define EFX_DWORD_FIELD(dword, field) \
187 EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \
188 EFX_HIGH_BIT(field))
189
190#define EFX_OWORD_IS_ZERO64(oword) \
191 (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
192
193#define EFX_QWORD_IS_ZERO64(qword) \
194 (((qword).u64[0]) == (__force __le64) 0)
195
196#define EFX_OWORD_IS_ZERO32(oword) \
197 (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
198 == (__force __le32) 0)
199
200#define EFX_QWORD_IS_ZERO32(qword) \
201 (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
202
203#define EFX_DWORD_IS_ZERO(dword) \
204 (((dword).u32[0]) == (__force __le32) 0)
205
206#define EFX_OWORD_IS_ALL_ONES64(oword) \
207 (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
208
209#define EFX_QWORD_IS_ALL_ONES64(qword) \
210 ((qword).u64[0] == ~((__force __le64) 0))
211
212#define EFX_OWORD_IS_ALL_ONES32(oword) \
213 (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
214 == ~((__force __le32) 0))
215
216#define EFX_QWORD_IS_ALL_ONES32(qword) \
217 (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
218
219#define EFX_DWORD_IS_ALL_ONES(dword) \
220 ((dword).u32[0] == ~((__force __le32) 0))
221
222#if BITS_PER_LONG == 64
223#define EFX_OWORD_FIELD EFX_OWORD_FIELD64
224#define EFX_QWORD_FIELD EFX_QWORD_FIELD64
225#define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64
226#define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64
227#define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64
228#define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64
229#else
230#define EFX_OWORD_FIELD EFX_OWORD_FIELD32
231#define EFX_QWORD_FIELD EFX_QWORD_FIELD32
232#define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32
233#define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32
234#define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32
235#define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES32
236#endif
237
238/*
239 * Construct bit field portion
240 *
241 * Creates the portion of the bit field [low,high) that lies within
242 * the range [min,max).
243 */
244#define EFX_INSERT_NATIVE64(min, max, low, high, value) \
245 (((low > max) || (high < min)) ? 0 : \
246 ((low > min) ? \
247 (((u64) (value)) << (low - min)) : \
248 (((u64) (value)) >> (min - low))))
249
250#define EFX_INSERT_NATIVE32(min, max, low, high, value) \
251 (((low > max) || (high < min)) ? 0 : \
252 ((low > min) ? \
253 (((u32) (value)) << (low - min)) : \
254 (((u32) (value)) >> (min - low))))
255
256#define EFX_INSERT_NATIVE(min, max, low, high, value) \
257 ((((max - min) >= 32) || ((high - low) >= 32)) ? \
258 EFX_INSERT_NATIVE64(min, max, low, high, value) : \
259 EFX_INSERT_NATIVE32(min, max, low, high, value))
260
261/*
262 * Construct bit field portion
263 *
264 * Creates the portion of the named bit field that lies within the
265 * range [min,max).
266 */
267#define EFX_INSERT_FIELD_NATIVE(min, max, field, value) \
268 EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \
269 EFX_HIGH_BIT(field), value)
270
271/*
272 * Construct bit field
273 *
274 * Creates the portion of the named bit fields that lie within the
275 * range [min,max).
276 */
277#define EFX_INSERT_FIELDS_NATIVE(min, max, \
278 field1, value1, \
279 field2, value2, \
280 field3, value3, \
281 field4, value4, \
282 field5, value5, \
283 field6, value6, \
284 field7, value7, \
285 field8, value8, \
286 field9, value9, \
287 field10, value10, \
288 field11, value11, \
289 field12, value12, \
290 field13, value13, \
291 field14, value14, \
292 field15, value15, \
293 field16, value16, \
294 field17, value17, \
295 field18, value18, \
296 field19, value19) \
297 (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \
298 EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \
299 EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \
300 EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \
301 EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \
302 EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \
303 EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \
304 EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \
305 EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \
306 EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)) | \
307 EFX_INSERT_FIELD_NATIVE((min), (max), field11, (value11)) | \
308 EFX_INSERT_FIELD_NATIVE((min), (max), field12, (value12)) | \
309 EFX_INSERT_FIELD_NATIVE((min), (max), field13, (value13)) | \
310 EFX_INSERT_FIELD_NATIVE((min), (max), field14, (value14)) | \
311 EFX_INSERT_FIELD_NATIVE((min), (max), field15, (value15)) | \
312 EFX_INSERT_FIELD_NATIVE((min), (max), field16, (value16)) | \
313 EFX_INSERT_FIELD_NATIVE((min), (max), field17, (value17)) | \
314 EFX_INSERT_FIELD_NATIVE((min), (max), field18, (value18)) | \
315 EFX_INSERT_FIELD_NATIVE((min), (max), field19, (value19)))
316
317#define EFX_INSERT_FIELDS64(...) \
318 cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
319
320#define EFX_INSERT_FIELDS32(...) \
321 cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
322
323#define EFX_POPULATE_OWORD64(oword, ...) do { \
324 (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
325 (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \
326 } while (0)
327
328#define EFX_POPULATE_QWORD64(qword, ...) do { \
329 (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
330 } while (0)
331
332#define EFX_POPULATE_OWORD32(oword, ...) do { \
333 (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
334 (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
335 (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \
336 (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \
337 } while (0)
338
339#define EFX_POPULATE_QWORD32(qword, ...) do { \
340 (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
341 (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
342 } while (0)
343
344#define EFX_POPULATE_DWORD(dword, ...) do { \
345 (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
346 } while (0)
347
348#if BITS_PER_LONG == 64
349#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64
350#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64
351#else
352#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32
353#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32
354#endif
355
356/* Populate an octword field with various numbers of arguments */
357#define EFX_POPULATE_OWORD_19 EFX_POPULATE_OWORD
358#define EFX_POPULATE_OWORD_18(oword, ...) \
359 EFX_POPULATE_OWORD_19(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
360#define EFX_POPULATE_OWORD_17(oword, ...) \
361 EFX_POPULATE_OWORD_18(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
362#define EFX_POPULATE_OWORD_16(oword, ...) \
363 EFX_POPULATE_OWORD_17(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
364#define EFX_POPULATE_OWORD_15(oword, ...) \
365 EFX_POPULATE_OWORD_16(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
366#define EFX_POPULATE_OWORD_14(oword, ...) \
367 EFX_POPULATE_OWORD_15(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
368#define EFX_POPULATE_OWORD_13(oword, ...) \
369 EFX_POPULATE_OWORD_14(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
370#define EFX_POPULATE_OWORD_12(oword, ...) \
371 EFX_POPULATE_OWORD_13(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
372#define EFX_POPULATE_OWORD_11(oword, ...) \
373 EFX_POPULATE_OWORD_12(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
374#define EFX_POPULATE_OWORD_10(oword, ...) \
375 EFX_POPULATE_OWORD_11(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
376#define EFX_POPULATE_OWORD_9(oword, ...) \
377 EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
378#define EFX_POPULATE_OWORD_8(oword, ...) \
379 EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
380#define EFX_POPULATE_OWORD_7(oword, ...) \
381 EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
382#define EFX_POPULATE_OWORD_6(oword, ...) \
383 EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
384#define EFX_POPULATE_OWORD_5(oword, ...) \
385 EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
386#define EFX_POPULATE_OWORD_4(oword, ...) \
387 EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
388#define EFX_POPULATE_OWORD_3(oword, ...) \
389 EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
390#define EFX_POPULATE_OWORD_2(oword, ...) \
391 EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
392#define EFX_POPULATE_OWORD_1(oword, ...) \
393 EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
394#define EFX_ZERO_OWORD(oword) \
395 EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0)
396#define EFX_SET_OWORD(oword) \
397 EFX_POPULATE_OWORD_4(oword, \
398 EFX_DWORD_0, 0xffffffff, \
399 EFX_DWORD_1, 0xffffffff, \
400 EFX_DWORD_2, 0xffffffff, \
401 EFX_DWORD_3, 0xffffffff)
402
403/* Populate a quadword field with various numbers of arguments */
404#define EFX_POPULATE_QWORD_19 EFX_POPULATE_QWORD
405#define EFX_POPULATE_QWORD_18(qword, ...) \
406 EFX_POPULATE_QWORD_19(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
407#define EFX_POPULATE_QWORD_17(qword, ...) \
408 EFX_POPULATE_QWORD_18(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
409#define EFX_POPULATE_QWORD_16(qword, ...) \
410 EFX_POPULATE_QWORD_17(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
411#define EFX_POPULATE_QWORD_15(qword, ...) \
412 EFX_POPULATE_QWORD_16(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
413#define EFX_POPULATE_QWORD_14(qword, ...) \
414 EFX_POPULATE_QWORD_15(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
415#define EFX_POPULATE_QWORD_13(qword, ...) \
416 EFX_POPULATE_QWORD_14(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
417#define EFX_POPULATE_QWORD_12(qword, ...) \
418 EFX_POPULATE_QWORD_13(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
419#define EFX_POPULATE_QWORD_11(qword, ...) \
420 EFX_POPULATE_QWORD_12(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
421#define EFX_POPULATE_QWORD_10(qword, ...) \
422 EFX_POPULATE_QWORD_11(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
423#define EFX_POPULATE_QWORD_9(qword, ...) \
424 EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
425#define EFX_POPULATE_QWORD_8(qword, ...) \
426 EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
427#define EFX_POPULATE_QWORD_7(qword, ...) \
428 EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
429#define EFX_POPULATE_QWORD_6(qword, ...) \
430 EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
431#define EFX_POPULATE_QWORD_5(qword, ...) \
432 EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
433#define EFX_POPULATE_QWORD_4(qword, ...) \
434 EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
435#define EFX_POPULATE_QWORD_3(qword, ...) \
436 EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
437#define EFX_POPULATE_QWORD_2(qword, ...) \
438 EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
439#define EFX_POPULATE_QWORD_1(qword, ...) \
440 EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
441#define EFX_ZERO_QWORD(qword) \
442 EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0)
443#define EFX_SET_QWORD(qword) \
444 EFX_POPULATE_QWORD_2(qword, \
445 EFX_DWORD_0, 0xffffffff, \
446 EFX_DWORD_1, 0xffffffff)
447
448/* Populate a dword field with various numbers of arguments */
449#define EFX_POPULATE_DWORD_19 EFX_POPULATE_DWORD
450#define EFX_POPULATE_DWORD_18(dword, ...) \
451 EFX_POPULATE_DWORD_19(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
452#define EFX_POPULATE_DWORD_17(dword, ...) \
453 EFX_POPULATE_DWORD_18(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
454#define EFX_POPULATE_DWORD_16(dword, ...) \
455 EFX_POPULATE_DWORD_17(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
456#define EFX_POPULATE_DWORD_15(dword, ...) \
457 EFX_POPULATE_DWORD_16(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
458#define EFX_POPULATE_DWORD_14(dword, ...) \
459 EFX_POPULATE_DWORD_15(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
460#define EFX_POPULATE_DWORD_13(dword, ...) \
461 EFX_POPULATE_DWORD_14(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
462#define EFX_POPULATE_DWORD_12(dword, ...) \
463 EFX_POPULATE_DWORD_13(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
464#define EFX_POPULATE_DWORD_11(dword, ...) \
465 EFX_POPULATE_DWORD_12(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
466#define EFX_POPULATE_DWORD_10(dword, ...) \
467 EFX_POPULATE_DWORD_11(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
468#define EFX_POPULATE_DWORD_9(dword, ...) \
469 EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
470#define EFX_POPULATE_DWORD_8(dword, ...) \
471 EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
472#define EFX_POPULATE_DWORD_7(dword, ...) \
473 EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
474#define EFX_POPULATE_DWORD_6(dword, ...) \
475 EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
476#define EFX_POPULATE_DWORD_5(dword, ...) \
477 EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
478#define EFX_POPULATE_DWORD_4(dword, ...) \
479 EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
480#define EFX_POPULATE_DWORD_3(dword, ...) \
481 EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
482#define EFX_POPULATE_DWORD_2(dword, ...) \
483 EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
484#define EFX_POPULATE_DWORD_1(dword, ...) \
485 EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
486#define EFX_ZERO_DWORD(dword) \
487 EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0)
488#define EFX_SET_DWORD(dword) \
489 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff)
490
491/*
492 * Modify a named field within an already-populated structure. Used
493 * for read-modify-write operations.
494 *
495 */
496#define EFX_INVERT_OWORD(oword) do { \
497 (oword).u64[0] = ~((oword).u64[0]); \
498 (oword).u64[1] = ~((oword).u64[1]); \
499 } while (0)
500
501#define EFX_AND_OWORD(oword, from, mask) \
502 do { \
503 (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \
504 (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \
505 } while (0)
506
507#define EFX_AND_QWORD(qword, from, mask) \
508 (qword).u64[0] = (from).u64[0] & (mask).u64[0]
509
510#define EFX_OR_OWORD(oword, from, mask) \
511 do { \
512 (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \
513 (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \
514 } while (0)
515
516#define EFX_INSERT64(min, max, low, high, value) \
517 cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value))
518
519#define EFX_INSERT32(min, max, low, high, value) \
520 cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value))
521
522#define EFX_INPLACE_MASK64(min, max, low, high) \
523 EFX_INSERT64(min, max, low, high, EFX_MASK64((high) + 1 - (low)))
524
525#define EFX_INPLACE_MASK32(min, max, low, high) \
526 EFX_INSERT32(min, max, low, high, EFX_MASK32((high) + 1 - (low)))
527
528#define EFX_SET_OWORD64(oword, low, high, value) do { \
529 (oword).u64[0] = (((oword).u64[0] \
530 & ~EFX_INPLACE_MASK64(0, 63, low, high)) \
531 | EFX_INSERT64(0, 63, low, high, value)); \
532 (oword).u64[1] = (((oword).u64[1] \
533 & ~EFX_INPLACE_MASK64(64, 127, low, high)) \
534 | EFX_INSERT64(64, 127, low, high, value)); \
535 } while (0)
536
537#define EFX_SET_QWORD64(qword, low, high, value) do { \
538 (qword).u64[0] = (((qword).u64[0] \
539 & ~EFX_INPLACE_MASK64(0, 63, low, high)) \
540 | EFX_INSERT64(0, 63, low, high, value)); \
541 } while (0)
542
543#define EFX_SET_OWORD32(oword, low, high, value) do { \
544 (oword).u32[0] = (((oword).u32[0] \
545 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
546 | EFX_INSERT32(0, 31, low, high, value)); \
547 (oword).u32[1] = (((oword).u32[1] \
548 & ~EFX_INPLACE_MASK32(32, 63, low, high)) \
549 | EFX_INSERT32(32, 63, low, high, value)); \
550 (oword).u32[2] = (((oword).u32[2] \
551 & ~EFX_INPLACE_MASK32(64, 95, low, high)) \
552 | EFX_INSERT32(64, 95, low, high, value)); \
553 (oword).u32[3] = (((oword).u32[3] \
554 & ~EFX_INPLACE_MASK32(96, 127, low, high)) \
555 | EFX_INSERT32(96, 127, low, high, value)); \
556 } while (0)
557
558#define EFX_SET_QWORD32(qword, low, high, value) do { \
559 (qword).u32[0] = (((qword).u32[0] \
560 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
561 | EFX_INSERT32(0, 31, low, high, value)); \
562 (qword).u32[1] = (((qword).u32[1] \
563 & ~EFX_INPLACE_MASK32(32, 63, low, high)) \
564 | EFX_INSERT32(32, 63, low, high, value)); \
565 } while (0)
566
567#define EFX_SET_DWORD32(dword, low, high, value) do { \
568 (dword).u32[0] = (((dword).u32[0] \
569 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
570 | EFX_INSERT32(0, 31, low, high, value)); \
571 } while (0)
572
573#define EFX_SET_OWORD_FIELD64(oword, field, value) \
574 EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \
575 EFX_HIGH_BIT(field), value)
576
577#define EFX_SET_QWORD_FIELD64(qword, field, value) \
578 EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \
579 EFX_HIGH_BIT(field), value)
580
581#define EFX_SET_OWORD_FIELD32(oword, field, value) \
582 EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \
583 EFX_HIGH_BIT(field), value)
584
585#define EFX_SET_QWORD_FIELD32(qword, field, value) \
586 EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \
587 EFX_HIGH_BIT(field), value)
588
589#define EFX_SET_DWORD_FIELD(dword, field, value) \
590 EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \
591 EFX_HIGH_BIT(field), value)
592
593
594
595#if BITS_PER_LONG == 64
596#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64
597#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64
598#else
599#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32
600#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32
601#endif
602
603/* Used to avoid compiler warnings about shift range exceeding width
604 * of the data types when dma_addr_t is only 32 bits wide.
605 */
606#define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t))
607#define EFX_DMA_TYPE_WIDTH(width) \
608 (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
609
610
611/* Static initialiser */
612#define EFX_OWORD32(a, b, c, d) \
613 { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \
614 cpu_to_le32(c), cpu_to_le32(d) } }
615
616#endif /* EFX_BITFIELD_H */
617

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