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8ceee660 | 1 | /**************************************************************************** |
f7a6d2c4 | 2 | * Driver for Solarflare network controllers and boards |
8ceee660 | 3 | * Copyright 2005-2006 Fen Systems Ltd. |
f7a6d2c4 | 4 | * Copyright 2006-2013 Solarflare Communications Inc. |
8ceee660 BH |
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 | |
8127d661 BH |
32 | #define EFX_WORD_0_LBN 0 |
33 | #define EFX_WORD_0_WIDTH 16 | |
34 | #define EFX_WORD_1_LBN 16 | |
35 | #define EFX_WORD_1_WIDTH 16 | |
8ceee660 BH |
36 | #define EFX_DWORD_0_LBN 0 |
37 | #define EFX_DWORD_0_WIDTH 32 | |
38 | #define EFX_DWORD_1_LBN 32 | |
39 | #define EFX_DWORD_1_WIDTH 32 | |
40 | #define EFX_DWORD_2_LBN 64 | |
41 | #define EFX_DWORD_2_WIDTH 32 | |
42 | #define EFX_DWORD_3_LBN 96 | |
43 | #define EFX_DWORD_3_WIDTH 32 | |
8880f4ec BH |
44 | #define EFX_QWORD_0_LBN 0 |
45 | #define EFX_QWORD_0_WIDTH 64 | |
8ceee660 BH |
46 | |
47 | /* Specified attribute (e.g. LBN) of the specified field */ | |
48 | #define EFX_VAL(field, attribute) field ## _ ## attribute | |
49 | /* Low bit number of the specified field */ | |
50 | #define EFX_LOW_BIT(field) EFX_VAL(field, LBN) | |
51 | /* Bit width of the specified field */ | |
52 | #define EFX_WIDTH(field) EFX_VAL(field, WIDTH) | |
53 | /* High bit number of the specified field */ | |
54 | #define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1) | |
55 | /* Mask equal in width to the specified field. | |
56 | * | |
57 | * For example, a field with width 5 would have a mask of 0x1f. | |
58 | * | |
59 | * The maximum width mask that can be generated is 64 bits. | |
60 | */ | |
a515089c BH |
61 | #define EFX_MASK64(width) \ |
62 | ((width) == 64 ? ~((u64) 0) : \ | |
63 | (((((u64) 1) << (width))) - 1)) | |
8ceee660 BH |
64 | |
65 | /* Mask equal in width to the specified field. | |
66 | * | |
67 | * For example, a field with width 5 would have a mask of 0x1f. | |
68 | * | |
69 | * The maximum width mask that can be generated is 32 bits. Use | |
70 | * EFX_MASK64 for higher width fields. | |
71 | */ | |
a515089c BH |
72 | #define EFX_MASK32(width) \ |
73 | ((width) == 32 ? ~((u32) 0) : \ | |
74 | (((((u32) 1) << (width))) - 1)) | |
8ceee660 BH |
75 | |
76 | /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */ | |
77 | typedef union efx_dword { | |
78 | __le32 u32[1]; | |
79 | } efx_dword_t; | |
80 | ||
81 | /* A quadword (i.e. 8 byte) datatype - little-endian in HW */ | |
82 | typedef union efx_qword { | |
83 | __le64 u64[1]; | |
84 | __le32 u32[2]; | |
85 | efx_dword_t dword[2]; | |
86 | } efx_qword_t; | |
87 | ||
88 | /* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */ | |
89 | typedef union efx_oword { | |
90 | __le64 u64[2]; | |
91 | efx_qword_t qword[2]; | |
92 | __le32 u32[4]; | |
93 | efx_dword_t dword[4]; | |
94 | } efx_oword_t; | |
95 | ||
96 | /* Format string and value expanders for printk */ | |
97 | #define EFX_DWORD_FMT "%08x" | |
98 | #define EFX_QWORD_FMT "%08x:%08x" | |
99 | #define EFX_OWORD_FMT "%08x:%08x:%08x:%08x" | |
100 | #define EFX_DWORD_VAL(dword) \ | |
101 | ((unsigned int) le32_to_cpu((dword).u32[0])) | |
102 | #define EFX_QWORD_VAL(qword) \ | |
103 | ((unsigned int) le32_to_cpu((qword).u32[1])), \ | |
104 | ((unsigned int) le32_to_cpu((qword).u32[0])) | |
105 | #define EFX_OWORD_VAL(oword) \ | |
106 | ((unsigned int) le32_to_cpu((oword).u32[3])), \ | |
107 | ((unsigned int) le32_to_cpu((oword).u32[2])), \ | |
108 | ((unsigned int) le32_to_cpu((oword).u32[1])), \ | |
109 | ((unsigned int) le32_to_cpu((oword).u32[0])) | |
110 | ||
111 | /* | |
112 | * Extract bit field portion [low,high) from the native-endian element | |
113 | * which contains bits [min,max). | |
114 | * | |
115 | * For example, suppose "element" represents the high 32 bits of a | |
116 | * 64-bit value, and we wish to extract the bits belonging to the bit | |
117 | * field occupying bits 28-45 of this 64-bit value. | |
118 | * | |
119 | * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give | |
120 | * | |
121 | * ( element ) << 4 | |
122 | * | |
123 | * The result will contain the relevant bits filled in in the range | |
124 | * [0,high-low), with garbage in bits [high-low+1,...). | |
125 | */ | |
126 | #define EFX_EXTRACT_NATIVE(native_element, min, max, low, high) \ | |
9724a850 BH |
127 | ((low) > (max) || (high) < (min) ? 0 : \ |
128 | (low) > (min) ? \ | |
129 | (native_element) >> ((low) - (min)) : \ | |
130 | (native_element) << ((min) - (low))) | |
8ceee660 BH |
131 | |
132 | /* | |
133 | * Extract bit field portion [low,high) from the 64-bit little-endian | |
134 | * element which contains bits [min,max) | |
135 | */ | |
136 | #define EFX_EXTRACT64(element, min, max, low, high) \ | |
137 | EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high) | |
138 | ||
139 | /* | |
140 | * Extract bit field portion [low,high) from the 32-bit little-endian | |
141 | * element which contains bits [min,max) | |
142 | */ | |
143 | #define EFX_EXTRACT32(element, min, max, low, high) \ | |
144 | EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high) | |
145 | ||
146 | #define EFX_EXTRACT_OWORD64(oword, low, high) \ | |
a515089c BH |
147 | ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \ |
148 | EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \ | |
9724a850 | 149 | EFX_MASK64((high) + 1 - (low))) |
8ceee660 BH |
150 | |
151 | #define EFX_EXTRACT_QWORD64(qword, low, high) \ | |
a515089c | 152 | (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \ |
9724a850 | 153 | EFX_MASK64((high) + 1 - (low))) |
8ceee660 BH |
154 | |
155 | #define EFX_EXTRACT_OWORD32(oword, low, high) \ | |
a515089c BH |
156 | ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \ |
157 | EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \ | |
158 | EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \ | |
159 | EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \ | |
9724a850 | 160 | EFX_MASK32((high) + 1 - (low))) |
8ceee660 BH |
161 | |
162 | #define EFX_EXTRACT_QWORD32(qword, low, high) \ | |
a515089c BH |
163 | ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \ |
164 | EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \ | |
9724a850 | 165 | EFX_MASK32((high) + 1 - (low))) |
8ceee660 | 166 | |
a515089c BH |
167 | #define EFX_EXTRACT_DWORD(dword, low, high) \ |
168 | (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \ | |
9724a850 | 169 | EFX_MASK32((high) + 1 - (low))) |
8ceee660 | 170 | |
a515089c BH |
171 | #define EFX_OWORD_FIELD64(oword, field) \ |
172 | EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \ | |
173 | EFX_HIGH_BIT(field)) | |
8ceee660 | 174 | |
a515089c BH |
175 | #define EFX_QWORD_FIELD64(qword, field) \ |
176 | EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \ | |
177 | EFX_HIGH_BIT(field)) | |
8ceee660 | 178 | |
a515089c BH |
179 | #define EFX_OWORD_FIELD32(oword, field) \ |
180 | EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \ | |
181 | EFX_HIGH_BIT(field)) | |
8ceee660 | 182 | |
a515089c BH |
183 | #define EFX_QWORD_FIELD32(qword, field) \ |
184 | EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \ | |
185 | EFX_HIGH_BIT(field)) | |
8ceee660 | 186 | |
a515089c BH |
187 | #define EFX_DWORD_FIELD(dword, field) \ |
188 | EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \ | |
189 | EFX_HIGH_BIT(field)) | |
8ceee660 BH |
190 | |
191 | #define EFX_OWORD_IS_ZERO64(oword) \ | |
192 | (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0) | |
193 | ||
194 | #define EFX_QWORD_IS_ZERO64(qword) \ | |
195 | (((qword).u64[0]) == (__force __le64) 0) | |
196 | ||
197 | #define EFX_OWORD_IS_ZERO32(oword) \ | |
198 | (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \ | |
199 | == (__force __le32) 0) | |
200 | ||
201 | #define EFX_QWORD_IS_ZERO32(qword) \ | |
202 | (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0) | |
203 | ||
204 | #define EFX_DWORD_IS_ZERO(dword) \ | |
205 | (((dword).u32[0]) == (__force __le32) 0) | |
206 | ||
207 | #define EFX_OWORD_IS_ALL_ONES64(oword) \ | |
208 | (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0)) | |
209 | ||
210 | #define EFX_QWORD_IS_ALL_ONES64(qword) \ | |
211 | ((qword).u64[0] == ~((__force __le64) 0)) | |
212 | ||
213 | #define EFX_OWORD_IS_ALL_ONES32(oword) \ | |
214 | (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \ | |
215 | == ~((__force __le32) 0)) | |
216 | ||
217 | #define EFX_QWORD_IS_ALL_ONES32(qword) \ | |
218 | (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0)) | |
219 | ||
220 | #define EFX_DWORD_IS_ALL_ONES(dword) \ | |
221 | ((dword).u32[0] == ~((__force __le32) 0)) | |
222 | ||
223 | #if BITS_PER_LONG == 64 | |
224 | #define EFX_OWORD_FIELD EFX_OWORD_FIELD64 | |
225 | #define EFX_QWORD_FIELD EFX_QWORD_FIELD64 | |
226 | #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64 | |
227 | #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64 | |
228 | #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64 | |
229 | #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64 | |
230 | #else | |
231 | #define EFX_OWORD_FIELD EFX_OWORD_FIELD32 | |
232 | #define EFX_QWORD_FIELD EFX_QWORD_FIELD32 | |
233 | #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32 | |
234 | #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32 | |
235 | #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32 | |
236 | #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES32 | |
237 | #endif | |
238 | ||
239 | /* | |
240 | * Construct bit field portion | |
241 | * | |
242 | * Creates the portion of the bit field [low,high) that lies within | |
243 | * the range [min,max). | |
244 | */ | |
245 | #define EFX_INSERT_NATIVE64(min, max, low, high, value) \ | |
246 | (((low > max) || (high < min)) ? 0 : \ | |
247 | ((low > min) ? \ | |
248 | (((u64) (value)) << (low - min)) : \ | |
249 | (((u64) (value)) >> (min - low)))) | |
250 | ||
251 | #define EFX_INSERT_NATIVE32(min, max, low, high, value) \ | |
252 | (((low > max) || (high < min)) ? 0 : \ | |
253 | ((low > min) ? \ | |
254 | (((u32) (value)) << (low - min)) : \ | |
255 | (((u32) (value)) >> (min - low)))) | |
256 | ||
257 | #define EFX_INSERT_NATIVE(min, max, low, high, value) \ | |
258 | ((((max - min) >= 32) || ((high - low) >= 32)) ? \ | |
259 | EFX_INSERT_NATIVE64(min, max, low, high, value) : \ | |
260 | EFX_INSERT_NATIVE32(min, max, low, high, value)) | |
261 | ||
262 | /* | |
263 | * Construct bit field portion | |
264 | * | |
265 | * Creates the portion of the named bit field that lies within the | |
266 | * range [min,max). | |
267 | */ | |
268 | #define EFX_INSERT_FIELD_NATIVE(min, max, field, value) \ | |
269 | EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \ | |
270 | EFX_HIGH_BIT(field), value) | |
271 | ||
272 | /* | |
273 | * Construct bit field | |
274 | * | |
275 | * Creates the portion of the named bit fields that lie within the | |
276 | * range [min,max). | |
277 | */ | |
278 | #define EFX_INSERT_FIELDS_NATIVE(min, max, \ | |
279 | field1, value1, \ | |
280 | field2, value2, \ | |
281 | field3, value3, \ | |
282 | field4, value4, \ | |
283 | field5, value5, \ | |
284 | field6, value6, \ | |
285 | field7, value7, \ | |
286 | field8, value8, \ | |
287 | field9, value9, \ | |
288 | field10, value10) \ | |
289 | (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \ | |
290 | EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \ | |
291 | EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \ | |
292 | EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \ | |
293 | EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \ | |
294 | EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \ | |
295 | EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \ | |
296 | EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \ | |
297 | EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \ | |
298 | EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10))) | |
299 | ||
300 | #define EFX_INSERT_FIELDS64(...) \ | |
301 | cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__)) | |
302 | ||
303 | #define EFX_INSERT_FIELDS32(...) \ | |
304 | cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__)) | |
305 | ||
306 | #define EFX_POPULATE_OWORD64(oword, ...) do { \ | |
307 | (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ | |
308 | (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \ | |
309 | } while (0) | |
310 | ||
311 | #define EFX_POPULATE_QWORD64(qword, ...) do { \ | |
312 | (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ | |
313 | } while (0) | |
314 | ||
315 | #define EFX_POPULATE_OWORD32(oword, ...) do { \ | |
316 | (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
317 | (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ | |
318 | (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \ | |
319 | (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \ | |
320 | } while (0) | |
321 | ||
322 | #define EFX_POPULATE_QWORD32(qword, ...) do { \ | |
323 | (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
324 | (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ | |
325 | } while (0) | |
326 | ||
327 | #define EFX_POPULATE_DWORD(dword, ...) do { \ | |
328 | (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ | |
329 | } while (0) | |
330 | ||
331 | #if BITS_PER_LONG == 64 | |
332 | #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64 | |
333 | #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64 | |
334 | #else | |
335 | #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32 | |
336 | #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32 | |
337 | #endif | |
338 | ||
339 | /* Populate an octword field with various numbers of arguments */ | |
340 | #define EFX_POPULATE_OWORD_10 EFX_POPULATE_OWORD | |
341 | #define EFX_POPULATE_OWORD_9(oword, ...) \ | |
342 | EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
343 | #define EFX_POPULATE_OWORD_8(oword, ...) \ | |
344 | EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
345 | #define EFX_POPULATE_OWORD_7(oword, ...) \ | |
346 | EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
347 | #define EFX_POPULATE_OWORD_6(oword, ...) \ | |
348 | EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
349 | #define EFX_POPULATE_OWORD_5(oword, ...) \ | |
350 | EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
351 | #define EFX_POPULATE_OWORD_4(oword, ...) \ | |
352 | EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
353 | #define EFX_POPULATE_OWORD_3(oword, ...) \ | |
354 | EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
355 | #define EFX_POPULATE_OWORD_2(oword, ...) \ | |
356 | EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
357 | #define EFX_POPULATE_OWORD_1(oword, ...) \ | |
358 | EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
359 | #define EFX_ZERO_OWORD(oword) \ | |
360 | EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0) | |
361 | #define EFX_SET_OWORD(oword) \ | |
362 | EFX_POPULATE_OWORD_4(oword, \ | |
363 | EFX_DWORD_0, 0xffffffff, \ | |
364 | EFX_DWORD_1, 0xffffffff, \ | |
365 | EFX_DWORD_2, 0xffffffff, \ | |
366 | EFX_DWORD_3, 0xffffffff) | |
367 | ||
368 | /* Populate a quadword field with various numbers of arguments */ | |
369 | #define EFX_POPULATE_QWORD_10 EFX_POPULATE_QWORD | |
370 | #define EFX_POPULATE_QWORD_9(qword, ...) \ | |
371 | EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
372 | #define EFX_POPULATE_QWORD_8(qword, ...) \ | |
373 | EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
374 | #define EFX_POPULATE_QWORD_7(qword, ...) \ | |
375 | EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
376 | #define EFX_POPULATE_QWORD_6(qword, ...) \ | |
377 | EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
378 | #define EFX_POPULATE_QWORD_5(qword, ...) \ | |
379 | EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
380 | #define EFX_POPULATE_QWORD_4(qword, ...) \ | |
381 | EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
382 | #define EFX_POPULATE_QWORD_3(qword, ...) \ | |
383 | EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
384 | #define EFX_POPULATE_QWORD_2(qword, ...) \ | |
385 | EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
386 | #define EFX_POPULATE_QWORD_1(qword, ...) \ | |
387 | EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
388 | #define EFX_ZERO_QWORD(qword) \ | |
389 | EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0) | |
390 | #define EFX_SET_QWORD(qword) \ | |
391 | EFX_POPULATE_QWORD_2(qword, \ | |
392 | EFX_DWORD_0, 0xffffffff, \ | |
393 | EFX_DWORD_1, 0xffffffff) | |
394 | ||
395 | /* Populate a dword field with various numbers of arguments */ | |
396 | #define EFX_POPULATE_DWORD_10 EFX_POPULATE_DWORD | |
397 | #define EFX_POPULATE_DWORD_9(dword, ...) \ | |
398 | EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
399 | #define EFX_POPULATE_DWORD_8(dword, ...) \ | |
400 | EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
401 | #define EFX_POPULATE_DWORD_7(dword, ...) \ | |
402 | EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
403 | #define EFX_POPULATE_DWORD_6(dword, ...) \ | |
404 | EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
405 | #define EFX_POPULATE_DWORD_5(dword, ...) \ | |
406 | EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
407 | #define EFX_POPULATE_DWORD_4(dword, ...) \ | |
408 | EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
409 | #define EFX_POPULATE_DWORD_3(dword, ...) \ | |
410 | EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
411 | #define EFX_POPULATE_DWORD_2(dword, ...) \ | |
412 | EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
413 | #define EFX_POPULATE_DWORD_1(dword, ...) \ | |
414 | EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) | |
415 | #define EFX_ZERO_DWORD(dword) \ | |
416 | EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0) | |
417 | #define EFX_SET_DWORD(dword) \ | |
418 | EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff) | |
419 | ||
420 | /* | |
421 | * Modify a named field within an already-populated structure. Used | |
422 | * for read-modify-write operations. | |
423 | * | |
424 | */ | |
8ceee660 BH |
425 | #define EFX_INVERT_OWORD(oword) do { \ |
426 | (oword).u64[0] = ~((oword).u64[0]); \ | |
427 | (oword).u64[1] = ~((oword).u64[1]); \ | |
428 | } while (0) | |
429 | ||
8c8661e4 BH |
430 | #define EFX_AND_OWORD(oword, from, mask) \ |
431 | do { \ | |
432 | (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \ | |
433 | (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \ | |
434 | } while (0) | |
435 | ||
436 | #define EFX_OR_OWORD(oword, from, mask) \ | |
437 | do { \ | |
438 | (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \ | |
439 | (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \ | |
440 | } while (0) | |
441 | ||
a515089c BH |
442 | #define EFX_INSERT64(min, max, low, high, value) \ |
443 | cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value)) | |
8ceee660 | 444 | |
a515089c BH |
445 | #define EFX_INSERT32(min, max, low, high, value) \ |
446 | cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value)) | |
8ceee660 | 447 | |
a515089c | 448 | #define EFX_INPLACE_MASK64(min, max, low, high) \ |
9724a850 | 449 | EFX_INSERT64(min, max, low, high, EFX_MASK64((high) + 1 - (low))) |
8ceee660 | 450 | |
a515089c | 451 | #define EFX_INPLACE_MASK32(min, max, low, high) \ |
9724a850 | 452 | EFX_INSERT32(min, max, low, high, EFX_MASK32((high) + 1 - (low))) |
8ceee660 | 453 | |
a515089c | 454 | #define EFX_SET_OWORD64(oword, low, high, value) do { \ |
9c636baf | 455 | (oword).u64[0] = (((oword).u64[0] \ |
a515089c BH |
456 | & ~EFX_INPLACE_MASK64(0, 63, low, high)) \ |
457 | | EFX_INSERT64(0, 63, low, high, value)); \ | |
9c636baf | 458 | (oword).u64[1] = (((oword).u64[1] \ |
a515089c BH |
459 | & ~EFX_INPLACE_MASK64(64, 127, low, high)) \ |
460 | | EFX_INSERT64(64, 127, low, high, value)); \ | |
8ceee660 BH |
461 | } while (0) |
462 | ||
a515089c | 463 | #define EFX_SET_QWORD64(qword, low, high, value) do { \ |
9c636baf | 464 | (qword).u64[0] = (((qword).u64[0] \ |
a515089c BH |
465 | & ~EFX_INPLACE_MASK64(0, 63, low, high)) \ |
466 | | EFX_INSERT64(0, 63, low, high, value)); \ | |
8ceee660 BH |
467 | } while (0) |
468 | ||
a515089c | 469 | #define EFX_SET_OWORD32(oword, low, high, value) do { \ |
9c636baf | 470 | (oword).u32[0] = (((oword).u32[0] \ |
a515089c BH |
471 | & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ |
472 | | EFX_INSERT32(0, 31, low, high, value)); \ | |
9c636baf | 473 | (oword).u32[1] = (((oword).u32[1] \ |
a515089c BH |
474 | & ~EFX_INPLACE_MASK32(32, 63, low, high)) \ |
475 | | EFX_INSERT32(32, 63, low, high, value)); \ | |
9c636baf | 476 | (oword).u32[2] = (((oword).u32[2] \ |
a515089c BH |
477 | & ~EFX_INPLACE_MASK32(64, 95, low, high)) \ |
478 | | EFX_INSERT32(64, 95, low, high, value)); \ | |
9c636baf | 479 | (oword).u32[3] = (((oword).u32[3] \ |
a515089c BH |
480 | & ~EFX_INPLACE_MASK32(96, 127, low, high)) \ |
481 | | EFX_INSERT32(96, 127, low, high, value)); \ | |
8ceee660 BH |
482 | } while (0) |
483 | ||
a515089c | 484 | #define EFX_SET_QWORD32(qword, low, high, value) do { \ |
9c636baf | 485 | (qword).u32[0] = (((qword).u32[0] \ |
a515089c BH |
486 | & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ |
487 | | EFX_INSERT32(0, 31, low, high, value)); \ | |
9c636baf | 488 | (qword).u32[1] = (((qword).u32[1] \ |
a515089c BH |
489 | & ~EFX_INPLACE_MASK32(32, 63, low, high)) \ |
490 | | EFX_INSERT32(32, 63, low, high, value)); \ | |
8ceee660 BH |
491 | } while (0) |
492 | ||
a515089c BH |
493 | #define EFX_SET_DWORD32(dword, low, high, value) do { \ |
494 | (dword).u32[0] = (((dword).u32[0] \ | |
495 | & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ | |
496 | | EFX_INSERT32(0, 31, low, high, value)); \ | |
8ceee660 BH |
497 | } while (0) |
498 | ||
a515089c BH |
499 | #define EFX_SET_OWORD_FIELD64(oword, field, value) \ |
500 | EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \ | |
501 | EFX_HIGH_BIT(field), value) | |
502 | ||
503 | #define EFX_SET_QWORD_FIELD64(qword, field, value) \ | |
504 | EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \ | |
505 | EFX_HIGH_BIT(field), value) | |
506 | ||
507 | #define EFX_SET_OWORD_FIELD32(oword, field, value) \ | |
508 | EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \ | |
509 | EFX_HIGH_BIT(field), value) | |
510 | ||
511 | #define EFX_SET_QWORD_FIELD32(qword, field, value) \ | |
512 | EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \ | |
513 | EFX_HIGH_BIT(field), value) | |
514 | ||
515 | #define EFX_SET_DWORD_FIELD(dword, field, value) \ | |
516 | EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \ | |
517 | EFX_HIGH_BIT(field), value) | |
518 | ||
519 | ||
520 | ||
8ceee660 BH |
521 | #if BITS_PER_LONG == 64 |
522 | #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64 | |
523 | #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64 | |
524 | #else | |
525 | #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32 | |
526 | #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32 | |
527 | #endif | |
528 | ||
8ceee660 BH |
529 | /* Used to avoid compiler warnings about shift range exceeding width |
530 | * of the data types when dma_addr_t is only 32 bits wide. | |
531 | */ | |
532 | #define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t)) | |
533 | #define EFX_DMA_TYPE_WIDTH(width) \ | |
534 | (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH) | |
8ceee660 | 535 | |
8c8661e4 BH |
536 | |
537 | /* Static initialiser */ | |
2d0cc56d BH |
538 | #define EFX_OWORD32(a, b, c, d) \ |
539 | { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \ | |
09640e63 | 540 | cpu_to_le32(c), cpu_to_le32(d) } } |
8c8661e4 | 541 | |
8ceee660 | 542 | #endif /* EFX_BITFIELD_H */ |