1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
#include "iwl-4965-hw.h"
#include "iwl-4965.h"
#include "iwl-4965-calib.h"
#define IL_AC_UNSET -1
/**
* il_verify_inst_sparse - verify runtime uCode image in card vs. host,
* using sample data 100 bytes apart. If these sample points are good,
* it's a pretty good bet that everything between them is good, too.
*/
static int
il4965_verify_inst_sparse(struct il_priv *il, __le32 *image, u32 len)
{
u32 val;
int ret = 0;
u32 errcnt = 0;
u32 i;
D_INFO("ucode inst image size is %u\n", len);
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
/* read data comes through single port, auto-incr addr */
/* NOTE: Use the debugless read so we don't flood kernel log
* if IL_DL_IO is set */
il_write_direct32(il, HBUS_TARG_MEM_RADDR,
i + IWL4965_RTC_INST_LOWER_BOUND);
val = _il_read_direct32(il, HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image)) {
ret = -EIO;
errcnt++;
if (errcnt >= 3)
break;
}
}
return ret;
}
/**
* il4965_verify_inst_full - verify runtime uCode image in card vs. host,
* looking at all data.
*/
static int il4965_verify_inst_full(struct il_priv *il, __le32 *image,
u32 len)
{
u32 val;
u32 save_len = len;
int ret = 0;
u32 errcnt;
D_INFO("ucode inst image size is %u\n", len);
il_write_direct32(il, HBUS_TARG_MEM_RADDR,
IWL4965_RTC_INST_LOWER_BOUND);
errcnt = 0;
for (; len > 0; len -= sizeof(u32), image++) {
/* read data comes through single port, auto-incr addr */
/* NOTE: Use the debugless read so we don't flood kernel log
* if IL_DL_IO is set */
val = _il_read_direct32(il, HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image)) {
IL_ERR(il, "uCode INST section is invalid at "
"offset 0x%x, is 0x%x, s/b 0x%x\n",
save_len - len, val, le32_to_cpu(*image));
ret = -EIO;
errcnt++;
if (errcnt >= 20)
break;
}
}
if (!errcnt)
D_INFO(
"ucode image in INSTRUCTION memory is good\n");
return ret;
}
/**
* il4965_verify_ucode - determine which instruction image is in SRAM,
* and verify its contents
*/
int il4965_verify_ucode(struct il_priv *il)
{
__le32 *image;
u32 len;
int ret;
/* Try bootstrap */
image = (__le32 *)il->ucode_boot.v_addr;
len = il->ucode_boot.len;
ret = il4965_verify_inst_sparse(il, image, len);
if (!ret) {
D_INFO("Bootstrap uCode is good in inst SRAM\n");
return 0;
}
/* Try initialize */
image = (__le32 *)il->ucode_init.v_addr;
len = il->ucode_init.len;
ret = il4965_verify_inst_sparse(il, image, len);
if (!ret) {
D_INFO("Initialize uCode is good in inst SRAM\n");
return 0;
}
/* Try runtime/protocol */
image = (__le32 *)il->ucode_code.v_addr;
len = il->ucode_code.len;
ret = il4965_verify_inst_sparse(il, image, len);
if (!ret) {
D_INFO("Runtime uCode is good in inst SRAM\n");
return 0;
}
IL_ERR(il, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
/* Since nothing seems to match, show first several data entries in
* instruction SRAM, so maybe visual inspection will give a clue.
* Selection of bootstrap image (vs. other images) is arbitrary. */
image = (__le32 *)il->ucode_boot.v_addr;
len = il->ucode_boot.len;
ret = il4965_verify_inst_full(il, image, len);
return ret;
}
|
