2 * This file is provided under a dual BSD/GPLv2 license. When using or
3 * redistributing this file, you may do so under either license.
7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27 * All rights reserved.
29 * Redistribution and use in source and binary forms, with or without
30 * modification, are permitted provided that the following conditions
33 * * Redistributions of source code must retain the above copyright
34 * notice, this list of conditions and the following disclaimer.
35 * * Redistributions in binary form must reproduce the above copyright
36 * notice, this list of conditions and the following disclaimer in
37 * the documentation and/or other materials provided with the
40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
41 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
42 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
43 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
44 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
46 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD$");
59 * @brief This file contains the base implementation for the memory
60 * descriptor list decorator. The decorator adds additional
61 * functionality that may be used by SCI users to help
62 * offload MDE processing.
65 #include <dev/isci/scil/sci_memory_descriptor_list_decorator.h>
67 U32 sci_mdl_decorator_get_memory_size(
68 SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl,
73 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde;
75 sci_mdl_first_entry(mdl);
76 mde = sci_mdl_get_current_entry(mdl);
79 if ( (mde->constant_memory_attributes == attributes)
80 || (attributes == 0) )
81 size += (mde->constant_memory_size + mde->constant_memory_alignment);
83 sci_mdl_next_entry(mdl);
84 mde = sci_mdl_get_current_entry(mdl);
90 // ---------------------------------------------------------------------------
92 void sci_mdl_decorator_assign_memory(
93 SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl,
95 POINTER_UINT virtual_address,
96 SCI_PHYSICAL_ADDRESS sci_physical_address
99 SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde;
100 U64 physical_address;
103 = ((U64) sci_cb_physical_address_lower(sci_physical_address))
104 | (((U64) sci_cb_physical_address_upper(sci_physical_address)) << 32);
106 sci_mdl_first_entry(mdl);
107 mde = sci_mdl_get_current_entry(mdl);
110 // As long as the memory attribute for this MDE is equivalent to
111 // those supplied by the caller, then fill out the appropriate
113 if ( (mde->constant_memory_attributes == attributes)
114 || (attributes == 0) )
116 // Ensure the virtual address alignment rules are met.
117 if ((virtual_address % mde->constant_memory_alignment) != 0)
120 += (mde->constant_memory_alignment -
121 (virtual_address % mde->constant_memory_alignment));
124 // Ensure the physical address alignment rules are met.
125 if ((physical_address % mde->constant_memory_alignment) != 0)
128 += (mde->constant_memory_alignment -
129 (physical_address % mde->constant_memory_alignment));
132 // Update the MDE with properly aligned address values.
133 mde->virtual_address = (void *)virtual_address;
134 sci_cb_make_physical_address(
135 mde->physical_address,
136 (U32) (physical_address >> 32),
137 (U32) (physical_address & 0xFFFFFFFF)
140 virtual_address += mde->constant_memory_size;
141 physical_address += mde->constant_memory_size;
144 // Move on to the next MDE
145 sci_mdl_next_entry(mdl);
146 mde = sci_mdl_get_current_entry (mdl);