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1 | /** |
2 | * Copyright (c) 2014 Redpine Signals Inc. | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/firmware.h> | |
19 | #include "rsi_usb.h" | |
20 | ||
21 | /** | |
22 | * rsi_copy_to_card() - This function includes the actual funtionality of | |
23 | * copying the TA firmware to the card.Basically this | |
24 | * function includes opening the TA file,reading the TA | |
25 | * file and writing their values in blocks of data. | |
26 | * @common: Pointer to the driver private structure. | |
27 | * @fw: Pointer to the firmware value to be written. | |
28 | * @len: length of firmware file. | |
29 | * @num_blocks: Number of blocks to be written to the card. | |
30 | * | |
31 | * Return: 0 on success and -1 on failure. | |
32 | */ | |
33 | static int rsi_copy_to_card(struct rsi_common *common, | |
34 | const u8 *fw, | |
35 | u32 len, | |
36 | u32 num_blocks) | |
37 | { | |
38 | struct rsi_hw *adapter = common->priv; | |
39 | struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; | |
40 | u32 indx, ii; | |
41 | u32 block_size = dev->tx_blk_size; | |
42 | u32 lsb_address; | |
43 | u32 base_address; | |
44 | ||
45 | base_address = TA_LOAD_ADDRESS; | |
46 | ||
47 | for (indx = 0, ii = 0; ii < num_blocks; ii++, indx += block_size) { | |
48 | lsb_address = base_address; | |
49 | if (rsi_usb_write_register_multiple(adapter, | |
50 | lsb_address, | |
51 | (u8 *)(fw + indx), | |
52 | block_size)) { | |
53 | rsi_dbg(ERR_ZONE, | |
54 | "%s: Unable to load %s blk\n", __func__, | |
55 | FIRMWARE_RSI9113); | |
56 | return -EIO; | |
57 | } | |
58 | rsi_dbg(INIT_ZONE, "%s: loading block: %d\n", __func__, ii); | |
59 | base_address += block_size; | |
60 | } | |
61 | ||
62 | if (len % block_size) { | |
63 | lsb_address = base_address; | |
64 | if (rsi_usb_write_register_multiple(adapter, | |
65 | lsb_address, | |
66 | (u8 *)(fw + indx), | |
67 | len % block_size)) { | |
68 | rsi_dbg(ERR_ZONE, | |
69 | "%s: Unable to load %s blk\n", __func__, | |
70 | FIRMWARE_RSI9113); | |
71 | return -EIO; | |
72 | } | |
73 | } | |
74 | rsi_dbg(INIT_ZONE, | |
75 | "%s: Succesfully loaded %s instructions\n", __func__, | |
76 | FIRMWARE_RSI9113); | |
77 | ||
78 | rsi_dbg(INIT_ZONE, "%s: loaded firmware\n", __func__); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | /** | |
83 | * rsi_usb_rx_thread() - This is a kernel thread to receive the packets from | |
84 | * the USB device. | |
85 | * @common: Pointer to the driver private structure. | |
86 | * | |
87 | * Return: None. | |
88 | */ | |
89 | void rsi_usb_rx_thread(struct rsi_common *common) | |
90 | { | |
91 | struct rsi_hw *adapter = common->priv; | |
92 | struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; | |
93 | int status; | |
94 | ||
95 | do { | |
96 | rsi_wait_event(&dev->rx_thread.event, EVENT_WAIT_FOREVER); | |
97 | ||
98 | if (atomic_read(&dev->rx_thread.thread_done)) | |
99 | goto out; | |
100 | ||
101 | mutex_lock(&common->tx_rxlock); | |
102 | status = rsi_read_pkt(common, 0); | |
103 | if (status) { | |
104 | rsi_dbg(ERR_ZONE, "%s: Failed To read data", __func__); | |
105 | mutex_unlock(&common->tx_rxlock); | |
106 | return; | |
107 | } | |
108 | mutex_unlock(&common->tx_rxlock); | |
109 | rsi_reset_event(&dev->rx_thread.event); | |
110 | if (adapter->rx_urb_submit(adapter)) { | |
111 | rsi_dbg(ERR_ZONE, | |
112 | "%s: Failed in urb submission", __func__); | |
113 | return; | |
114 | } | |
115 | } while (1); | |
116 | ||
117 | out: | |
118 | rsi_dbg(INFO_ZONE, "%s: Terminated thread\n", __func__); | |
119 | complete_and_exit(&dev->rx_thread.completion, 0); | |
120 | } | |
121 | ||
122 | ||
123 | /** | |
124 | * rsi_load_ta_instructions() - This function includes the actual funtionality | |
125 | * of loading the TA firmware.This function also | |
126 | * includes opening the TA file,reading the TA | |
127 | * file and writing their value in blocks of data. | |
128 | * @common: Pointer to the driver private structure. | |
129 | * | |
130 | * Return: status: 0 on success, -1 on failure. | |
131 | */ | |
132 | static int rsi_load_ta_instructions(struct rsi_common *common) | |
133 | { | |
134 | struct rsi_hw *adapter = common->priv; | |
135 | struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; | |
136 | const struct firmware *fw_entry = NULL; | |
137 | u32 block_size = dev->tx_blk_size; | |
138 | const u8 *fw; | |
139 | u32 num_blocks, len; | |
140 | int status = 0; | |
141 | ||
142 | status = request_firmware(&fw_entry, FIRMWARE_RSI9113, adapter->device); | |
143 | if (status < 0) { | |
144 | rsi_dbg(ERR_ZONE, "%s Firmware file %s not found\n", | |
145 | __func__, FIRMWARE_RSI9113); | |
146 | return status; | |
147 | } | |
148 | ||
5d5cd85f | 149 | /* Copy firmware into DMA-accessible memory */ |
dad0d04f | 150 | fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL); |
5d5cd85f ML |
151 | if (!fw) |
152 | return -ENOMEM; | |
dad0d04f FF |
153 | len = fw_entry->size; |
154 | ||
155 | if (len % 4) | |
156 | len += (4 - (len % 4)); | |
157 | ||
158 | num_blocks = (len / block_size); | |
159 | ||
160 | rsi_dbg(INIT_ZONE, "%s: Instruction size:%d\n", __func__, len); | |
161 | rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks); | |
162 | ||
163 | status = rsi_copy_to_card(common, fw, len, num_blocks); | |
5d5cd85f | 164 | kfree(fw); |
dad0d04f FF |
165 | release_firmware(fw_entry); |
166 | return status; | |
167 | } | |
168 | ||
169 | /** | |
170 | * rsi_device_init() - This Function Initializes The HAL. | |
171 | * @common: Pointer to the driver private structure. | |
172 | * | |
173 | * Return: 0 on success, -1 on failure. | |
174 | */ | |
175 | int rsi_usb_device_init(struct rsi_common *common) | |
176 | { | |
177 | if (rsi_load_ta_instructions(common)) | |
178 | return -EIO; | |
179 | ||
180 | return 0; | |
181 | } |