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bitfield.h
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1 /****************************************************************************
2  * Driver for Solarflare Solarstorm network controllers and boards
3  * Copyright 2005-2006 Fen Systems Ltd.
4  * Copyright 2006-2009 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 #define EFX_QWORD_0_LBN 0
41 #define EFX_QWORD_0_WIDTH 64
42 
43 /* Specified attribute (e.g. LBN) of the specified field */
44 #define EFX_VAL(field, attribute) field ## _ ## attribute
45 /* Low bit number of the specified field */
46 #define EFX_LOW_BIT(field) EFX_VAL(field, LBN)
47 /* Bit width of the specified field */
48 #define EFX_WIDTH(field) EFX_VAL(field, WIDTH)
49 /* High bit number of the specified field */
50 #define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1)
51 /* Mask equal in width to the specified field.
52  *
53  * For example, a field with width 5 would have a mask of 0x1f.
54  *
55  * The maximum width mask that can be generated is 64 bits.
56  */
57 #define EFX_MASK64(width) \
58  ((width) == 64 ? ~((u64) 0) : \
59  (((((u64) 1) << (width))) - 1))
60 
61 /* Mask equal in width to the specified field.
62  *
63  * For example, a field with width 5 would have a mask of 0x1f.
64  *
65  * The maximum width mask that can be generated is 32 bits. Use
66  * EFX_MASK64 for higher width fields.
67  */
68 #define EFX_MASK32(width) \
69  ((width) == 32 ? ~((u32) 0) : \
70  (((((u32) 1) << (width))) - 1))
71 
72 /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
73 typedef union efx_dword {
74  __le32 u32[1];
75 } efx_dword_t;
76 
77 /* A quadword (i.e. 8 byte) datatype - little-endian in HW */
78 typedef union efx_qword {
79  __le64 u64[1];
80  __le32 u32[2];
81  efx_dword_t dword[2];
82 } efx_qword_t;
83 
84 /* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
85 typedef union efx_oword {
86  __le64 u64[2];
87  efx_qword_t qword[2];
88  __le32 u32[4];
89  efx_dword_t dword[4];
90 } efx_oword_t;
91 
92 /* Format string and value expanders for printk */
93 #define EFX_DWORD_FMT "%08x"
94 #define EFX_QWORD_FMT "%08x:%08x"
95 #define EFX_OWORD_FMT "%08x:%08x:%08x:%08x"
96 #define EFX_DWORD_VAL(dword) \
97  ((unsigned int) le32_to_cpu((dword).u32[0]))
98 #define EFX_QWORD_VAL(qword) \
99  ((unsigned int) le32_to_cpu((qword).u32[1])), \
100  ((unsigned int) le32_to_cpu((qword).u32[0]))
101 #define EFX_OWORD_VAL(oword) \
102  ((unsigned int) le32_to_cpu((oword).u32[3])), \
103  ((unsigned int) le32_to_cpu((oword).u32[2])), \
104  ((unsigned int) le32_to_cpu((oword).u32[1])), \
105  ((unsigned int) le32_to_cpu((oword).u32[0]))
106 
107 /*
108  * Extract bit field portion [low,high) from the native-endian element
109  * which contains bits [min,max).
110  *
111  * For example, suppose "element" represents the high 32 bits of a
112  * 64-bit value, and we wish to extract the bits belonging to the bit
113  * field occupying bits 28-45 of this 64-bit value.
114  *
115  * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give
116  *
117  * ( element ) << 4
118  *
119  * The result will contain the relevant bits filled in in the range
120  * [0,high-low), with garbage in bits [high-low+1,...).
121  */
122 #define EFX_EXTRACT_NATIVE(native_element, min, max, low, high) \
123  ((low) > (max) || (high) < (min) ? 0 : \
124  (low) > (min) ? \
125  (native_element) >> ((low) - (min)) : \
126  (native_element) << ((min) - (low)))
127 
128 /*
129  * Extract bit field portion [low,high) from the 64-bit little-endian
130  * element which contains bits [min,max)
131  */
132 #define EFX_EXTRACT64(element, min, max, low, high) \
133  EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
134 
135 /*
136  * Extract bit field portion [low,high) from the 32-bit little-endian
137  * element which contains bits [min,max)
138  */
139 #define EFX_EXTRACT32(element, min, max, low, high) \
140  EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
141 
142 #define EFX_EXTRACT_OWORD64(oword, low, high) \
143  ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \
144  EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \
145  EFX_MASK64((high) + 1 - (low)))
146 
147 #define EFX_EXTRACT_QWORD64(qword, low, high) \
148  (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \
149  EFX_MASK64((high) + 1 - (low)))
150 
151 #define EFX_EXTRACT_OWORD32(oword, low, high) \
152  ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \
153  EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \
154  EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \
155  EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \
156  EFX_MASK32((high) + 1 - (low)))
157 
158 #define EFX_EXTRACT_QWORD32(qword, low, high) \
159  ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \
160  EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \
161  EFX_MASK32((high) + 1 - (low)))
162 
163 #define EFX_EXTRACT_DWORD(dword, low, high) \
164  (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \
165  EFX_MASK32((high) + 1 - (low)))
166 
167 #define EFX_OWORD_FIELD64(oword, field) \
168  EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \
169  EFX_HIGH_BIT(field))
170 
171 #define EFX_QWORD_FIELD64(qword, field) \
172  EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \
173  EFX_HIGH_BIT(field))
174 
175 #define EFX_OWORD_FIELD32(oword, field) \
176  EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \
177  EFX_HIGH_BIT(field))
178 
179 #define EFX_QWORD_FIELD32(qword, field) \
180  EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \
181  EFX_HIGH_BIT(field))
182 
183 #define EFX_DWORD_FIELD(dword, field) \
184  EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \
185  EFX_HIGH_BIT(field))
186 
187 #define EFX_OWORD_IS_ZERO64(oword) \
188  (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
189 
190 #define EFX_QWORD_IS_ZERO64(qword) \
191  (((qword).u64[0]) == (__force __le64) 0)
192 
193 #define EFX_OWORD_IS_ZERO32(oword) \
194  (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
195  == (__force __le32) 0)
196 
197 #define EFX_QWORD_IS_ZERO32(qword) \
198  (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
199 
200 #define EFX_DWORD_IS_ZERO(dword) \
201  (((dword).u32[0]) == (__force __le32) 0)
202 
203 #define EFX_OWORD_IS_ALL_ONES64(oword) \
204  (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
205 
206 #define EFX_QWORD_IS_ALL_ONES64(qword) \
207  ((qword).u64[0] == ~((__force __le64) 0))
208 
209 #define EFX_OWORD_IS_ALL_ONES32(oword) \
210  (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
211  == ~((__force __le32) 0))
212 
213 #define EFX_QWORD_IS_ALL_ONES32(qword) \
214  (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
215 
216 #define EFX_DWORD_IS_ALL_ONES(dword) \
217  ((dword).u32[0] == ~((__force __le32) 0))
218 
219 #if BITS_PER_LONG == 64
220 #define EFX_OWORD_FIELD EFX_OWORD_FIELD64
221 #define EFX_QWORD_FIELD EFX_QWORD_FIELD64
222 #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64
223 #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64
224 #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64
225 #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64
226 #else
227 #define EFX_OWORD_FIELD EFX_OWORD_FIELD32
228 #define EFX_QWORD_FIELD EFX_QWORD_FIELD32
229 #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32
230 #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32
231 #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32
232 #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES32
233 #endif
234 
235 /*
236  * Construct bit field portion
237  *
238  * Creates the portion of the bit field [low,high) that lies within
239  * the range [min,max).
240  */
241 #define EFX_INSERT_NATIVE64(min, max, low, high, value) \
242  (((low > max) || (high < min)) ? 0 : \
243  ((low > min) ? \
244  (((u64) (value)) << (low - min)) : \
245  (((u64) (value)) >> (min - low))))
246 
247 #define EFX_INSERT_NATIVE32(min, max, low, high, value) \
248  (((low > max) || (high < min)) ? 0 : \
249  ((low > min) ? \
250  (((u32) (value)) << (low - min)) : \
251  (((u32) (value)) >> (min - low))))
252 
253 #define EFX_INSERT_NATIVE(min, max, low, high, value) \
254  ((((max - min) >= 32) || ((high - low) >= 32)) ? \
255  EFX_INSERT_NATIVE64(min, max, low, high, value) : \
256  EFX_INSERT_NATIVE32(min, max, low, high, value))
257 
258 /*
259  * Construct bit field portion
260  *
261  * Creates the portion of the named bit field that lies within the
262  * range [min,max).
263  */
264 #define EFX_INSERT_FIELD_NATIVE(min, max, field, value) \
265  EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \
266  EFX_HIGH_BIT(field), value)
267 
268 /*
269  * Construct bit field
270  *
271  * Creates the portion of the named bit fields that lie within the
272  * range [min,max).
273  */
274 #define EFX_INSERT_FIELDS_NATIVE(min, max, \
275  field1, value1, \
276  field2, value2, \
277  field3, value3, \
278  field4, value4, \
279  field5, value5, \
280  field6, value6, \
281  field7, value7, \
282  field8, value8, \
283  field9, value9, \
284  field10, value10) \
285  (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \
286  EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \
287  EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \
288  EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \
289  EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \
290  EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \
291  EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \
292  EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \
293  EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \
294  EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)))
295 
296 #define EFX_INSERT_FIELDS64(...) \
297  cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
298 
299 #define EFX_INSERT_FIELDS32(...) \
300  cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
301 
302 #define EFX_POPULATE_OWORD64(oword, ...) do { \
303  (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
304  (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \
305  } while (0)
306 
307 #define EFX_POPULATE_QWORD64(qword, ...) do { \
308  (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
309  } while (0)
310 
311 #define EFX_POPULATE_OWORD32(oword, ...) do { \
312  (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
313  (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
314  (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \
315  (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \
316  } while (0)
317 
318 #define EFX_POPULATE_QWORD32(qword, ...) do { \
319  (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
320  (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
321  } while (0)
322 
323 #define EFX_POPULATE_DWORD(dword, ...) do { \
324  (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
325  } while (0)
326 
327 #if BITS_PER_LONG == 64
328 #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64
329 #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64
330 #else
331 #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32
332 #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32
333 #endif
334 
335 /* Populate an octword field with various numbers of arguments */
336 #define EFX_POPULATE_OWORD_10 EFX_POPULATE_OWORD
337 #define EFX_POPULATE_OWORD_9(oword, ...) \
338  EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
339 #define EFX_POPULATE_OWORD_8(oword, ...) \
340  EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
341 #define EFX_POPULATE_OWORD_7(oword, ...) \
342  EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
343 #define EFX_POPULATE_OWORD_6(oword, ...) \
344  EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
345 #define EFX_POPULATE_OWORD_5(oword, ...) \
346  EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
347 #define EFX_POPULATE_OWORD_4(oword, ...) \
348  EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
349 #define EFX_POPULATE_OWORD_3(oword, ...) \
350  EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
351 #define EFX_POPULATE_OWORD_2(oword, ...) \
352  EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
353 #define EFX_POPULATE_OWORD_1(oword, ...) \
354  EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
355 #define EFX_ZERO_OWORD(oword) \
356  EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0)
357 #define EFX_SET_OWORD(oword) \
358  EFX_POPULATE_OWORD_4(oword, \
359  EFX_DWORD_0, 0xffffffff, \
360  EFX_DWORD_1, 0xffffffff, \
361  EFX_DWORD_2, 0xffffffff, \
362  EFX_DWORD_3, 0xffffffff)
363 
364 /* Populate a quadword field with various numbers of arguments */
365 #define EFX_POPULATE_QWORD_10 EFX_POPULATE_QWORD
366 #define EFX_POPULATE_QWORD_9(qword, ...) \
367  EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
368 #define EFX_POPULATE_QWORD_8(qword, ...) \
369  EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
370 #define EFX_POPULATE_QWORD_7(qword, ...) \
371  EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
372 #define EFX_POPULATE_QWORD_6(qword, ...) \
373  EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
374 #define EFX_POPULATE_QWORD_5(qword, ...) \
375  EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
376 #define EFX_POPULATE_QWORD_4(qword, ...) \
377  EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
378 #define EFX_POPULATE_QWORD_3(qword, ...) \
379  EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
380 #define EFX_POPULATE_QWORD_2(qword, ...) \
381  EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
382 #define EFX_POPULATE_QWORD_1(qword, ...) \
383  EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
384 #define EFX_ZERO_QWORD(qword) \
385  EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0)
386 #define EFX_SET_QWORD(qword) \
387  EFX_POPULATE_QWORD_2(qword, \
388  EFX_DWORD_0, 0xffffffff, \
389  EFX_DWORD_1, 0xffffffff)
390 
391 /* Populate a dword field with various numbers of arguments */
392 #define EFX_POPULATE_DWORD_10 EFX_POPULATE_DWORD
393 #define EFX_POPULATE_DWORD_9(dword, ...) \
394  EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
395 #define EFX_POPULATE_DWORD_8(dword, ...) \
396  EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
397 #define EFX_POPULATE_DWORD_7(dword, ...) \
398  EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
399 #define EFX_POPULATE_DWORD_6(dword, ...) \
400  EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
401 #define EFX_POPULATE_DWORD_5(dword, ...) \
402  EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
403 #define EFX_POPULATE_DWORD_4(dword, ...) \
404  EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
405 #define EFX_POPULATE_DWORD_3(dword, ...) \
406  EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
407 #define EFX_POPULATE_DWORD_2(dword, ...) \
408  EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
409 #define EFX_POPULATE_DWORD_1(dword, ...) \
410  EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
411 #define EFX_ZERO_DWORD(dword) \
412  EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0)
413 #define EFX_SET_DWORD(dword) \
414  EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff)
415 
416 /*
417  * Modify a named field within an already-populated structure. Used
418  * for read-modify-write operations.
419  *
420  */
421 #define EFX_INVERT_OWORD(oword) do { \
422  (oword).u64[0] = ~((oword).u64[0]); \
423  (oword).u64[1] = ~((oword).u64[1]); \
424  } while (0)
425 
426 #define EFX_AND_OWORD(oword, from, mask) \
427  do { \
428  (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \
429  (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \
430  } while (0)
431 
432 #define EFX_OR_OWORD(oword, from, mask) \
433  do { \
434  (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \
435  (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \
436  } while (0)
437 
438 #define EFX_INSERT64(min, max, low, high, value) \
439  cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value))
440 
441 #define EFX_INSERT32(min, max, low, high, value) \
442  cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value))
443 
444 #define EFX_INPLACE_MASK64(min, max, low, high) \
445  EFX_INSERT64(min, max, low, high, EFX_MASK64((high) + 1 - (low)))
446 
447 #define EFX_INPLACE_MASK32(min, max, low, high) \
448  EFX_INSERT32(min, max, low, high, EFX_MASK32((high) + 1 - (low)))
449 
450 #define EFX_SET_OWORD64(oword, low, high, value) do { \
451  (oword).u64[0] = (((oword).u64[0] \
452  & ~EFX_INPLACE_MASK64(0, 63, low, high)) \
453  | EFX_INSERT64(0, 63, low, high, value)); \
454  (oword).u64[1] = (((oword).u64[1] \
455  & ~EFX_INPLACE_MASK64(64, 127, low, high)) \
456  | EFX_INSERT64(64, 127, low, high, value)); \
457  } while (0)
458 
459 #define EFX_SET_QWORD64(qword, low, high, value) do { \
460  (qword).u64[0] = (((qword).u64[0] \
461  & ~EFX_INPLACE_MASK64(0, 63, low, high)) \
462  | EFX_INSERT64(0, 63, low, high, value)); \
463  } while (0)
464 
465 #define EFX_SET_OWORD32(oword, low, high, value) do { \
466  (oword).u32[0] = (((oword).u32[0] \
467  & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
468  | EFX_INSERT32(0, 31, low, high, value)); \
469  (oword).u32[1] = (((oword).u32[1] \
470  & ~EFX_INPLACE_MASK32(32, 63, low, high)) \
471  | EFX_INSERT32(32, 63, low, high, value)); \
472  (oword).u32[2] = (((oword).u32[2] \
473  & ~EFX_INPLACE_MASK32(64, 95, low, high)) \
474  | EFX_INSERT32(64, 95, low, high, value)); \
475  (oword).u32[3] = (((oword).u32[3] \
476  & ~EFX_INPLACE_MASK32(96, 127, low, high)) \
477  | EFX_INSERT32(96, 127, low, high, value)); \
478  } while (0)
479 
480 #define EFX_SET_QWORD32(qword, low, high, value) do { \
481  (qword).u32[0] = (((qword).u32[0] \
482  & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
483  | EFX_INSERT32(0, 31, low, high, value)); \
484  (qword).u32[1] = (((qword).u32[1] \
485  & ~EFX_INPLACE_MASK32(32, 63, low, high)) \
486  | EFX_INSERT32(32, 63, low, high, value)); \
487  } while (0)
488 
489 #define EFX_SET_DWORD32(dword, low, high, value) do { \
490  (dword).u32[0] = (((dword).u32[0] \
491  & ~EFX_INPLACE_MASK32(0, 31, low, high)) \
492  | EFX_INSERT32(0, 31, low, high, value)); \
493  } while (0)
494 
495 #define EFX_SET_OWORD_FIELD64(oword, field, value) \
496  EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \
497  EFX_HIGH_BIT(field), value)
498 
499 #define EFX_SET_QWORD_FIELD64(qword, field, value) \
500  EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \
501  EFX_HIGH_BIT(field), value)
502 
503 #define EFX_SET_OWORD_FIELD32(oword, field, value) \
504  EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \
505  EFX_HIGH_BIT(field), value)
506 
507 #define EFX_SET_QWORD_FIELD32(qword, field, value) \
508  EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \
509  EFX_HIGH_BIT(field), value)
510 
511 #define EFX_SET_DWORD_FIELD(dword, field, value) \
512  EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \
513  EFX_HIGH_BIT(field), value)
514 
515 
516 
517 #if BITS_PER_LONG == 64
518 #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64
519 #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64
520 #else
521 #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32
522 #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32
523 #endif
524 
525 /* Used to avoid compiler warnings about shift range exceeding width
526  * of the data types when dma_addr_t is only 32 bits wide.
527  */
528 #define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t))
529 #define EFX_DMA_TYPE_WIDTH(width) \
530  (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
531 
532 
533 /* Static initialiser */
534 #define EFX_OWORD32(a, b, c, d) \
535  { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \
536  cpu_to_le32(c), cpu_to_le32(d) } }
537 
538 #endif /* EFX_BITFIELD_H */
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