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57 #include <dev/isci/scil/sci_types.h>
60 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
64 #define MIN(x,y) ((x) < (y) ? (x) : (y))
68 #define MAX(x,y) ((x) > (y) ? (x) : (y))
72 * Normal byte swap macro
74 #define SCIC_SWAP_DWORD(x) \
76 (((x) >> 24) & 0x000000FF) \
77 | (((x) >> 8) & 0x0000FF00) \
78 | (((x) << 8) & 0x00FF0000) \
79 | (((x) << 24) & 0xFF000000) \
82 #define SCIC_BUILD_DWORD(char_buffer) \
84 ((char_buffer)[0] << 24) \
85 | ((char_buffer)[1] << 16) \
86 | ((char_buffer)[2] << 8) \
87 | ((char_buffer)[3]) \
90 #define SCI_FIELD_OFFSET(type, field) ((POINTER_UINT)&(((type *)0)->field))
92 //This macro counts how many bits being set in a mask.
93 #define SCI_GET_BITS_SET_COUNT(mask, set_bit_count) \
97 for (index = 0; index < sizeof(mask)*8; index++) \
99 if( mask & (1<<index) ) \
105 * This macro simply performs addition on an SCI_PHYSICAL_ADDRESS
106 * type. The lower U32 value is "clipped" or "wrapped" back through
107 * 0. When this occurs the upper 32-bits are incremented by 1.
109 #define sci_physical_address_add(physical_address, value) \
111 U32 lower = sci_cb_physical_address_lower((physical_address)); \
112 U32 upper = sci_cb_physical_address_upper((physical_address)); \
114 if (lower + (value) < lower) \
118 sci_cb_make_physical_address(physical_address, upper, lower); \
122 * This macro simply performs subtraction on an SCI_PHYSICAL_ADDRESS
123 * type. The lower U32 value is "clipped" or "wrapped" back through
124 * 0. When this occurs the upper 32-bits are decremented by 1.
126 #define sci_physical_address_subtract(physical_address, value) \
128 U32 lower = sci_cb_physical_address_lower((physical_address)); \
129 U32 upper = sci_cb_physical_address_upper((physical_address)); \
131 if (lower - (value) > lower) \
135 sci_cb_make_physical_address(physical_address, upper, lower); \
139 * @brief Copy the data from source to destination and swap the
140 * bytes during the copy.
142 * @param[in] destination This parameter specifies the destination address
143 * to which the data is to be copied.
144 * @param[in] source This parameter specifies the source address from
145 * which data is to be copied.
146 * @param[in] word_count This parameter specifies the number of 32-bit words
147 * to copy and byte swap.
151 void scic_word_copy_with_swap(
158 #define sci_ssp_get_sense_data_length(sense_data_length_buffer) \
159 SCIC_BUILD_DWORD(sense_data_length_buffer)
161 #define sci_ssp_get_response_data_length(response_data_length_buffer) \
162 SCIC_BUILD_DWORD(response_data_length_buffer)
164 #endif // _SCI_UTIL_H_