projects / deliverable / linux.git / blame
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|---|---|---|
| 719f82d3 EB |
1 | /****************************************************************************** |
| 2 | ||
| 3 | AudioScience HPI driver | |
| 4 | Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com> | |
| 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 | |
| 49 | phm->type = HPI_TYPE_MESSAGE; | |
| 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; | |
| 92 | phm->type = HPI_TYPE_MESSAGE; | |
| 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 | } |