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1 | /****************************************************************************** |
2 | ||
3 | AudioScience HPI driver | |
40818b62 | 4 | Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com> |
719f82d3 EB |
5 | |
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of version 2 of the GNU General Public License as | |
8 | published by the Free Software Foundation; | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | ||
19 | Hardware Programming Interface (HPI) Utility functions. | |
20 | ||
21 | (C) Copyright AudioScience Inc. 2007 | |
22 | *******************************************************************************/ | |
23 | ||
24 | #include "hpi_internal.h" | |
25 | #include "hpimsginit.h" | |
26 | ||
27 | /* The actual message size for each object type */ | |
28 | static u16 msg_size[HPI_OBJ_MAXINDEX + 1] = HPI_MESSAGE_SIZE_BY_OBJECT; | |
29 | /* The actual response size for each object type */ | |
30 | static u16 res_size[HPI_OBJ_MAXINDEX + 1] = HPI_RESPONSE_SIZE_BY_OBJECT; | |
31 | /* Flag to enable alternate message type for SSX2 bypass. */ | |
32 | static u16 gwSSX2_bypass; | |
33 | ||
719f82d3 EB |
34 | /** \internal |
35 | * initialize the HPI message structure | |
36 | */ | |
37 | static void hpi_init_message(struct hpi_message *phm, u16 object, | |
38 | u16 function) | |
39 | { | |
40 | memset(phm, 0, sizeof(*phm)); | |
41 | if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) | |
42 | phm->size = msg_size[object]; | |
43 | else | |
44 | phm->size = sizeof(*phm); | |
45 | ||
46 | if (gwSSX2_bypass) | |
47 | phm->type = HPI_TYPE_SSX2BYPASS_MESSAGE; | |
48 | else | |
82b5774f | 49 | phm->type = HPI_TYPE_REQUEST; |
719f82d3 EB |
50 | phm->object = object; |
51 | phm->function = function; | |
52 | phm->version = 0; | |
3285ea10 | 53 | phm->adapter_index = HPI_ADAPTER_INDEX_INVALID; |
0a1602c0 | 54 | /* Expect actual adapter index to be set by caller */ |
719f82d3 EB |
55 | } |
56 | ||
57 | /** \internal | |
58 | * initialize the HPI response structure | |
59 | */ | |
60 | void hpi_init_response(struct hpi_response *phr, u16 object, u16 function, | |
61 | u16 error) | |
62 | { | |
63 | memset(phr, 0, sizeof(*phr)); | |
64 | phr->type = HPI_TYPE_RESPONSE; | |
65 | if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) | |
66 | phr->size = res_size[object]; | |
67 | else | |
68 | phr->size = sizeof(*phr); | |
69 | phr->object = object; | |
70 | phr->function = function; | |
71 | phr->error = error; | |
72 | phr->specific_error = 0; | |
73 | phr->version = 0; | |
74 | } | |
75 | ||
76 | void hpi_init_message_response(struct hpi_message *phm, | |
77 | struct hpi_response *phr, u16 object, u16 function) | |
78 | { | |
79 | hpi_init_message(phm, object, function); | |
80 | /* default error return if the response is | |
81 | not filled in by the callee */ | |
82 | hpi_init_response(phr, object, function, | |
83 | HPI_ERROR_PROCESSING_MESSAGE); | |
84 | } | |
85 | ||
86 | static void hpi_init_messageV1(struct hpi_message_header *phm, u16 size, | |
87 | u16 object, u16 function) | |
88 | { | |
89 | memset(phm, 0, sizeof(*phm)); | |
90 | if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) { | |
91 | phm->size = size; | |
82b5774f | 92 | phm->type = HPI_TYPE_REQUEST; |
719f82d3 EB |
93 | phm->object = object; |
94 | phm->function = function; | |
95 | phm->version = 1; | |
96 | /* Expect adapter index to be set by caller */ | |
97 | } | |
98 | } | |
99 | ||
100 | void hpi_init_responseV1(struct hpi_response_header *phr, u16 size, | |
101 | u16 object, u16 function) | |
102 | { | |
103 | memset(phr, 0, sizeof(*phr)); | |
104 | phr->size = size; | |
105 | phr->version = 1; | |
106 | phr->type = HPI_TYPE_RESPONSE; | |
107 | phr->error = HPI_ERROR_PROCESSING_MESSAGE; | |
108 | } | |
109 | ||
110 | void hpi_init_message_responseV1(struct hpi_message_header *phm, u16 msg_size, | |
111 | struct hpi_response_header *phr, u16 res_size, u16 object, | |
112 | u16 function) | |
113 | { | |
114 | hpi_init_messageV1(phm, msg_size, object, function); | |
115 | hpi_init_responseV1(phr, res_size, object, function); | |
116 | } |