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si_vcm.c

Last change on this file was 2, checked in by jglee, 11 years ago
first commit
Property svn:executable set to ``*
File size: 7.0 KB

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1	/***************************************************************
2	**
3	** Broadcom Corp. Confidential
4	** Copyright 2003-2012 Broadcom Corp. All Rights Reserved.
5	**
6	** THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED
7	** SOFTWARE LICENSE AGREEMENT BETWEEN THE USER AND BROADCOM.
8	** YOU HAVE NO RIGHT TO USE OR EXPLOIT THIS MATERIAL EXCEPT
9	** SUBJECT TO THE TERMS OF SUCH AN AGREEMENT.
10	**
11	** File: si_vcm.c
12	** Description: function that parses the VCM table sections.
13	**
14	** Created: 03/08/2001
15	** 02/01/2012 modified for A56 support
16	**
17	** REVISION:
18	**
19	** $Log: $
20	**
21	**
22	****************************************************************/
23	#include "si.h"
24	#include "si_os.h"
25	#include "si_dbg.h"
26	#include "si_util.h"
27	#include "si_list.h"
28	#include "si_descriptors.h"
29	#include "si_transmission_medium.h"
30
31	#include "si_vcm.h"
32	#include "si_vcm_vct.h"
33
34	unsigned char VCM_VCT_version_number;
35	unsigned char VCM_VCT_last_section_number;
36	unsigned long VCM_VCT_section_mask[8];
37	unsigned short g_vct_id = 0;
38
39	static SI_VCM_VCT_Callback_t *s_vcm_vct_cb = NULL;
40
41	void SI_VCM_Init(
42	SI_VCM_VCT_Callback_t *cb,
43	unsigned char iVCM_VCT_version_number
44	)
45	{
46	unsigned long i;
47
48	s_vcm_vct_cb = cb;
49	SI_VCM_VCT_Init(s_vcm_vct_cb);
50	VCM_VCT_version_number = iVCM_VCT_version_number;
51	for (i=0; i<8; i++)
52	VCM_VCT_section_mask[i] = 0;
53	}
54
55	/*********************************************************************
56	Function : SI_VCM_Get
57	Description : Return the version numbers and masks.
58	Input : none.
59	Output : version number and pointers to section masks.
60	**********************************************************************/
61	bool SI_VCM_Complete(void)
62	{
63	return (SI_Chk_Section_complete(VCM_VCT_section_mask,VCM_VCT_last_section_number) == SI_SUCCESS);
64	}
65
66	/*********************************************************************
67	Function : SI_VCM_parse
68	Description : Function to parse the VCM table.
69	Input : unsigned char * table: point to the current VCM table section.
70	Output : SI_RET_CODE.
71	**********************************************************************/
72	SI_RET_CODE SI_VCM_parse (unsigned char * table)
73	{
74	unsigned long temp;
75	unsigned long section_length;
76	unsigned char table_subtype;
77	unsigned long desc_tag, len;
78	unsigned char version_number, section_number, last_section_number;
79	unsigned char current, crc_start;
80	int found_rdd;
81
82	found_rdd = 0;
83
84	SI_DBG_PRINT(E_SI_DBG_MSG,("VCM Table received.\n"));
85
86	if (*table != SI_VCM_TABLE_ID)
87	{
88	SI_DBG_PRINT(E_SI_ERR_MSG,("VCM Table ID error!!! %x\n", *table));
89	return SI_TABLE_ID_ERROR;
90	}
91
92	/* calculate and check section length. */
93	section_length = SI_Construct_Data(table,
94	VCM_SECTION_LENGTH_BYTE_INDX,
95	VCM_SECTION_LENGTH_BYTE_NUM,
96	VCM_SECTION_LENGTH_SHIFT,
97	VCM_SECTION_LENGTH_MASK);
98	section_length += VCM_SECTION_LENGTH_BYTE_INDX+VCM_SECTION_LENGTH_BYTE_NUM;
99	if (section_length > SI_NORMAL_SECTION_LENGTH)
100	{
101	SI_DBG_PRINT(E_SI_ERR_MSG,("VCM Table section length error!!! %x\n", section_length));
102	return SI_SECTION_LENGTH_ERROR;
103	}
104
105	/* We do the CRC check here to verify the contents of this section. */
106	if (SI_CRC32_Check(table, section_length) != SI_SUCCESS)
107	{
108	SI_DBG_PRINT(E_SI_ERR_MSG,("VCM Table section CRC error!!!\n"));
109	return SI_CRC_ERROR;
110	}
111
112	/* check protocol version. It should be zero for now. */
113	temp = SI_Construct_Data(table,
114	VCM_PROTOCOL_VERSION_BYTE_INDX,
115	VCM_PROTOCOL_VERSION_BYTE_NUM,
116	VCM_PROTOCOL_VERSION_SHIFT,
117	VCM_PROTOCOL_VERSION_MASK);
118	if (temp != SI_CURRENT_PROTOCOL_VERSION)
119	{
120	SI_DBG_PRINT(E_SI_ERR_MSG,("VCM Table PROTOCOL version error!!! %x\n", temp));
121	return SI_PROTOCOL_VER_ERROR;
122	}
123
124	temp = SI_Construct_Data(table,
125	VCM_TRANS_MEDIUM_BYTE_INDX,
126	VCM_TRANS_MEDIUM_BYTE_NUM,
127	VCM_TRANS_MEDIUM_SHIFT,
128	VCM_TRANS_MEDIUM_MASK);
129	if (TRANSMISSION_MEDIUM_CABLE != temp) {
130	SI_DBG_PRINT(E_SI_ERR_MSG,("Not supported transmission medium type!!!"));
131	return SI_NOT_SUPPORTED_ERROR;
132	}
133
134	/* we just need to handle VCT. Ignore the ICT or DCM for now. */
135	table_subtype = SI_Construct_Data(table,
136	VCM_TABLE_SUBTYPE_BYTE_INDX,
137	VCM_TABLE_SUBTYPE_BYTE_NUM,
138	VCM_TABLE_SUBTYPE_SHIFT,
139	VCM_TABLE_SUBTYPE_MASK);
140	if (table_subtype != VCT)
141	{
142	SI_DBG_PRINT(E_SI_DBG_MSG,("We are only interested in VCT of VCM right now.\n"));
143	return SI_SUCCESS;
144	}
145
146	g_vct_id = SI_Construct_Data(table,
147	VCM_VCT_ID_BYTE_INDX,
148	VCM_VCT_ID_BYTE_NUM,
149	VCM_VCT_ID_SHIFT,
150	VCM_VCT_ID_MASK);
151
152	/* we get a VCM record. see if we have any table level
153	descriptors for revision dectection. */
154	current = table + VCM_VCT_ID_BYTE_INDX + VCM_VCT_ID_BYTE_NUM;
155
156	/* point to the start of table level descriptor. */
157	current = SI_VCM_VCT_Pointer(current);
158	crc_start = table + section_length - SI_CRC_LENGTH;
159
160	/* go through all descriptors. */
161	while ((unsigned long)current < (unsigned long)crc_start)
162	{
163	desc_tag = *(current++);
164	len = *(current++);
165	switch(desc_tag)
166	{
167	case SI_DESC_REVISION_DETECTION:
168	found_rdd = 1;
169	/* we got a revision dectection descriptor. */
170	SI_DBG_PRINT(E_SI_DBG_MSG,("VCM VCM revision detection descriptors found.\n"));
171	version_number = SI_Construct_Data( current,
172	DESC_REV_DECTECT_VER_NUM_BYTE_INDEX,
173	DESC_REV_DECTECT_VER_NUM_BYTE_NUM,
174	DESC_REV_DECTECT_VER_NUM_SHIFT,
175	DESC_REV_DECTECT_VER_NUM_MASK);
176	section_number = SI_Construct_Data( current,
177	DESC_REV_DECTECT_SEC_NUM_BYTE_INDEX,
178	DESC_REV_DECTECT_SEC_NUM_BYTE_NUM,
179	DESC_REV_DECTECT_SEC_NUM_SHIFT,
180	DESC_REV_DECTECT_SEC_NUM_MASK);
181	last_section_number = SI_Construct_Data( current,
182	DESC_REV_DECTECT_LAST_SEC_NUM_BYTE_INDEX,
183	DESC_REV_DECTECT_LAST_SEC_NUM_BYTE_NUM,
184	DESC_REV_DECTECT_LAST_SEC_NUM_SHIFT,
185	DESC_REV_DECTECT_LAST_SEC_NUM_MASK);
186	VCM_VCT_last_section_number = last_section_number;
187	if (version_number == VCM_VCT_version_number)
188	{
189	/* same version number, check section mask. */
190	if (SI_Chk_Section_mask(VCM_VCT_section_mask, section_number))
191	return SI_SUCCESS; /* no need to update. */
192	}
193	else
194	{
195	/* different CDS version, init the CDS table and section mask .*/
196	SI_VCM_VCT_Free_List();
197	VCM_VCT_version_number = version_number;
198	SI_Init_Section_Mask(VCM_VCT_section_mask, last_section_number);
199	}
200	/* update the mask */
201	SI_Set_Section_mask(VCM_VCT_section_mask, section_number);
202	break;
203
204	default:
205	SI_DBG_PRINT(E_SI_WRN_MSG,("VCM VCM table descriptor %x received! Ignoring!\n", desc_tag));
206	break;
207	}
208
209	/* update pointer. */
210	current += len;
211	}
212
213	/* check for desc length. */
214	if ((unsigned long)current != (unsigned long)crc_start)
215	{
216	SI_DBG_PRINT(E_SI_ERR_MSG,("VCM Table length error!!!\n"));
217	return SI_SECTION_LENGTH_ERROR;
218	}
219
220	if (found_rdd == 0)
221	{
222	#ifdef CONFIG_RDD_REQUIRED
223	SI_DBG_PRINT(E_SI_ERR_MSG,("Revistion Detection Descriptor is required!!!\n"));
224	return SI_DESCRIPTOR_ERROR;
225	#else
226	/* set completion flag if there is no version descriptor */
227	VCM_VCT_last_section_number = 0;
228	SI_Set_Section_mask(VCM_VCT_section_mask, 0);
229	#endif
230	}
231
232	/* we either need to update the channel table or we don't have a revision detection. */
233	current = table + VCM_VCT_ID_BYTE_INDX + VCM_VCT_ID_BYTE_NUM;
234	return SI_VCM_VCT_Parse(current);
235	}

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source: svn/trunk/newcon3bcm2_21bu/BSEAV/lib/si/a56/vcm/si_vcm.c

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