ethernet/sfc/bitfield.h

45 /* Low bit number of the specified field */
108  * Extract bit field portion [low,high) from the native-endian element
120  * [0,high-low), with garbage in bits [high-low+1,...).
122 #define EFX_EXTRACT_NATIVE(native_element, min, max, low, high)		\  argument
123 	(((low > max) || (high < min)) ? 0 :				\
124 	 ((low > min) ?							\
125 	  ((native_element) >> (low - min)) :				\
126 	  ((native_element) << (min - low))))
129  * Extract bit field portion [low,high) from the 64-bit little-endian
132 #define EFX_EXTRACT64(element, min, max, low, high)			\  argument
133 	EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
136  * Extract bit field portion [low,high) from the 32-bit little-endian
139 #define EFX_EXTRACT32(element, min, max, low, high)			\  argument
140 	EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
142 #define EFX_EXTRACT_OWORD64(oword, low, high)				\  argument
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))
147 #define EFX_EXTRACT_QWORD64(qword, low, high)				\  argument
148 	(EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) &		\
149 	 EFX_MASK64(high + 1 - low))
151 #define EFX_EXTRACT_OWORD32(oword, low, high)				\  argument
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))
158 #define EFX_EXTRACT_QWORD32(qword, low, high)				\  argument
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))
163 #define EFX_EXTRACT_DWORD(dword, low, high)			\  argument
164 	(EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) &	\
165 	 EFX_MASK32(high + 1 - low))
238  * Creates the portion of the bit field [low,high) that lies within
241 #define EFX_INSERT_NATIVE64(min, max, low, high, value)		\  argument
242 	(((low > max) || (high < min)) ? 0 :			\
243 	 ((low > min) ?						\
244 	  (((u64) (value)) << (low - min)) :		\
245 	  (((u64) (value)) >> (min - low))))
247 #define EFX_INSERT_NATIVE32(min, max, low, high, value)		\  argument
248 	(((low > max) || (high < min)) ? 0 :			\
249 	 ((low > min) ?						\
250 	  (((u32) (value)) << (low - min)) :		\
251 	  (((u32) (value)) >> (min - low))))
253 #define EFX_INSERT_NATIVE(min, max, low, high, value)		\  argument
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))
438 #define EFX_INSERT64(min, max, low, high, value)			\  argument
439 	cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value))
441 #define EFX_INSERT32(min, max, low, high, value)			\  argument
442 	cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value))
444 #define EFX_INPLACE_MASK64(min, max, low, high)				\  argument
445 	EFX_INSERT64(min, max, low, high, EFX_MASK64(high + 1 - low))
447 #define EFX_INPLACE_MASK32(min, max, low, high)				\  argument
448 	EFX_INSERT32(min, max, low, high, EFX_MASK32(high + 1 - low))
450 #define EFX_SET_OWORD64(oword, low, high, value) do {			\  argument
452 			   & ~EFX_INPLACE_MASK64(0,  63, low, high))	\
453 			  | EFX_INSERT64(0,  63, low, high, value));	\
455 			   & ~EFX_INPLACE_MASK64(64, 127, low, high))	\
456 			  | EFX_INSERT64(64, 127, low, high, value));	\
459 #define EFX_SET_QWORD64(qword, low, high, value) do {			\  argument
461 			   & ~EFX_INPLACE_MASK64(0, 63, low, high))	\
462 			  | EFX_INSERT64(0, 63, low, high, value));	\
465 #define EFX_SET_OWORD32(oword, low, high, value) do {			\  argument
467 			   & ~EFX_INPLACE_MASK32(0, 31, low, high))	\
468 			  | EFX_INSERT32(0, 31, low, high, value));	\
470 			   & ~EFX_INPLACE_MASK32(32, 63, low, high))	\
471 			  | EFX_INSERT32(32, 63, low, high, value));	\
473 			   & ~EFX_INPLACE_MASK32(64, 95, low, high))	\
474 			  | EFX_INSERT32(64, 95, low, high, value));	\
476 			   & ~EFX_INPLACE_MASK32(96, 127, low, high))	\
477 			  | EFX_INSERT32(96, 127, low, high, value));	\
480 #define EFX_SET_QWORD32(qword, low, high, value) do {			\  argument
482 			   & ~EFX_INPLACE_MASK32(0, 31, low, high))	\
483 			  | EFX_INSERT32(0, 31, low, high, value));	\
485 			   & ~EFX_INPLACE_MASK32(32, 63, low, high))	\
486 			  | EFX_INSERT32(32, 63, low, high, value));	\
489 #define EFX_SET_DWORD32(dword, low, high, value) do {			\  argument
491 			   & ~EFX_INPLACE_MASK32(0, 31, low, high))	\
492 			  | EFX_INSERT32(0, 31, low, high, value));	\