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55 #include <sys/cdefs.h>
56 __FBSDID("$FreeBSD$");
61 * @brief This file contains the base implementation for the memory
62 * descriptor list decorator. The decorator adds additional
63 * functionality that may be used by SCI users to help
64 * offload MDE processing.
67 #include <dev/isci/scil/sci_memory_descriptor_list_decorator.h>
69 U32 sci_mdl_decorator_get_memory_size(
70 SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl,
75 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde;
77 sci_mdl_first_entry(mdl);
78 mde = sci_mdl_get_current_entry(mdl);
81 if ( (mde->constant_memory_attributes == attributes)
82 || (attributes == 0) )
83 size += (mde->constant_memory_size + mde->constant_memory_alignment);
85 sci_mdl_next_entry(mdl);
86 mde = sci_mdl_get_current_entry(mdl);
92 // ---------------------------------------------------------------------------
94 void sci_mdl_decorator_assign_memory(
95 SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl,
97 POINTER_UINT virtual_address,
98 SCI_PHYSICAL_ADDRESS sci_physical_address
101 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde;
102 U64 physical_address;
105 = ((U64) sci_cb_physical_address_lower(sci_physical_address))
106 | (((U64) sci_cb_physical_address_upper(sci_physical_address)) << 32);
108 sci_mdl_first_entry(mdl);
109 mde = sci_mdl_get_current_entry(mdl);
112 // As long as the memory attribute for this MDE is equivalent to
113 // those supplied by the caller, then fill out the appropriate
115 if ( (mde->constant_memory_attributes == attributes)
116 || (attributes == 0) )
118 // Ensure the virtual address alignment rules are met.
119 if ((virtual_address % mde->constant_memory_alignment) != 0)
122 += (mde->constant_memory_alignment -
123 (virtual_address % mde->constant_memory_alignment));
126 // Ensure the physical address alignment rules are met.
127 if ((physical_address % mde->constant_memory_alignment) != 0)
130 += (mde->constant_memory_alignment -
131 (physical_address % mde->constant_memory_alignment));
134 // Update the MDE with properly aligned address values.
135 mde->virtual_address = (void *)virtual_address;
136 sci_cb_make_physical_address(
137 mde->physical_address,
138 (U32) (physical_address >> 32),
139 (U32) (physical_address & 0xFFFFFFFF)
142 virtual_address += mde->constant_memory_size;
143 physical_address += mde->constant_memory_size;
146 // Move on to the next MDE
147 sci_mdl_next_entry(mdl);
148 mde = sci_mdl_get_current_entry (mdl);