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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/**
* Copyright (c) 2014 Redpine Signals Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include <linux/firmware.h>
#include "rsi_usb.h"
/**
* rsi_copy_to_card() - This function includes the actual funtionality of
* copying the TA firmware to the card.Basically this
* function includes opening the TA file,reading the TA
* file and writing their values in blocks of data.
* @common: Pointer to the driver private structure.
* @fw: Pointer to the firmware value to be written.
* @len: length of firmware file.
* @num_blocks: Number of blocks to be written to the card.
*
* Return: 0 on success and -1 on failure.
*/
static int rsi_copy_to_card(struct rsi_common *common,
const u8 *fw,
u32 len,
u32 num_blocks)
{
struct rsi_hw *adapter = common->priv;
struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
u32 indx, ii;
u32 block_size = dev->tx_blk_size;
u32 lsb_address;
u32 base_address;
base_address = TA_LOAD_ADDRESS;
for (indx = 0, ii = 0; ii < num_blocks; ii++, indx += block_size) {
lsb_address = base_address;
if (rsi_usb_write_register_multiple(adapter,
lsb_address,
(u8 *)(fw + indx),
block_size)) {
rsi_dbg(ERR_ZONE,
"%s: Unable to load %s blk\n", __func__,
FIRMWARE_RSI9113);
return -EIO;
}
rsi_dbg(INIT_ZONE, "%s: loading block: %d\n", __func__, ii);
base_address += block_size;
}
if (len % block_size) {
lsb_address = base_address;
if (rsi_usb_write_register_multiple(adapter,
lsb_address,
(u8 *)(fw + indx),
len % block_size)) {
rsi_dbg(ERR_ZONE,
"%s: Unable to load %s blk\n", __func__,
FIRMWARE_RSI9113);
return -EIO;
}
}
rsi_dbg(INIT_ZONE,
"%s: Succesfully loaded %s instructions\n", __func__,
FIRMWARE_RSI9113);
rsi_dbg(INIT_ZONE, "%s: loaded firmware\n", __func__);
return 0;
}
/**
* rsi_usb_rx_thread() - This is a kernel thread to receive the packets from
* the USB device.
* @common: Pointer to the driver private structure.
*
* Return: None.
*/
void rsi_usb_rx_thread(struct rsi_common *common)
{
struct rsi_hw *adapter = common->priv;
struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
int status;
do {
rsi_wait_event(&dev->rx_thread.event, EVENT_WAIT_FOREVER);
if (atomic_read(&dev->rx_thread.thread_done))
goto out;
mutex_lock(&common->tx_rxlock);
status = rsi_read_pkt(common, 0);
if (status) {
rsi_dbg(ERR_ZONE, "%s: Failed To read data", __func__);
mutex_unlock(&common->tx_rxlock);
return;
}
mutex_unlock(&common->tx_rxlock);
rsi_reset_event(&dev->rx_thread.event);
if (adapter->rx_urb_submit(adapter)) {
rsi_dbg(ERR_ZONE,
"%s: Failed in urb submission", __func__);
return;
}
} while (1);
out:
rsi_dbg(INFO_ZONE, "%s: Terminated thread\n", __func__);
complete_and_exit(&dev->rx_thread.completion, 0);
}
/**
* rsi_load_ta_instructions() - This function includes the actual funtionality
* of loading the TA firmware.This function also
* includes opening the TA file,reading the TA
* file and writing their value in blocks of data.
* @common: Pointer to the driver private structure.
*
* Return: status: 0 on success, -1 on failure.
*/
static int rsi_load_ta_instructions(struct rsi_common *common)
{
struct rsi_hw *adapter = common->priv;
struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
const struct firmware *fw_entry = NULL;
u32 block_size = dev->tx_blk_size;
const u8 *fw;
u32 num_blocks, len;
int status = 0;
status = request_firmware(&fw_entry, FIRMWARE_RSI9113, adapter->device);
if (status < 0) {
rsi_dbg(ERR_ZONE, "%s Firmware file %s not found\n",
__func__, FIRMWARE_RSI9113);
return status;
}
/* Copy firmware into DMA-accessible memory */
fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
if (!fw) {
status = -ENOMEM;
goto out;
}
len = fw_entry->size;
if (len % 4)
len += (4 - (len % 4));
num_blocks = (len / block_size);
rsi_dbg(INIT_ZONE, "%s: Instruction size:%d\n", __func__, len);
rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks);
status = rsi_copy_to_card(common, fw, len, num_blocks);
kfree(fw);
out:
release_firmware(fw_entry);
return status;
}
/**
* rsi_device_init() - This Function Initializes The HAL.
* @common: Pointer to the driver private structure.
*
* Return: 0 on success, -1 on failure.
*/
int rsi_usb_device_init(struct rsi_common *common)
{
if (rsi_load_ta_instructions(common))
return -EIO;
return 0;
}
|
