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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2021 pureLiFi
4 */
5
6#include <linux/firmware.h>
7#include <linux/bitrev.h>
8
9#include "mac.h"
10#include "usb.h"
11
12static int send_vendor_request(struct usb_device *udev, int request,
13 unsigned char *buffer, int buffer_size)
14{
15 return usb_control_msg(udev,
16 usb_rcvctrlpipe(udev, 0),
17 request, 0xC0, 0, 0,
18 buffer, buffer_size, PLF_USB_TIMEOUT);
19}
20
21static int send_vendor_command(struct usb_device *udev, int request,
22 unsigned char *buffer, int buffer_size)
23{
24 return usb_control_msg(udev,
25 usb_sndctrlpipe(udev, 0),
26 request, USB_TYPE_VENDOR /*0x40*/, 0, 0,
27 buffer, buffer_size, PLF_USB_TIMEOUT);
28}
29
30int plfxlc_download_fpga(struct usb_interface *intf)
31{
32 struct usb_device *udev = interface_to_usbdev(intf);
33 unsigned char *fpga_dmabuff = NULL;
34 const struct firmware *fw = NULL;
35 int blk_tran_len = PLF_BULK_TLEN;
36 unsigned char *fw_data;
37 const char *fw_name;
38 int r, actual_length;
39 int fw_data_i = 0;
40
41 if ((le16_to_cpu(udev->descriptor.idVendor) ==
42 PURELIFI_X_VENDOR_ID_0) &&
43 (le16_to_cpu(udev->descriptor.idProduct) ==
44 PURELIFI_X_PRODUCT_ID_0)) {
45 fw_name = "plfxlc/lifi-x.bin";
46 dev_dbg(&intf->dev, "bin file for X selected\n");
47
48 } else if ((le16_to_cpu(udev->descriptor.idVendor)) ==
49 PURELIFI_XC_VENDOR_ID_0 &&
50 (le16_to_cpu(udev->descriptor.idProduct) ==
51 PURELIFI_XC_PRODUCT_ID_0)) {
52 fw_name = "plfxlc/lifi-xc.bin";
53 dev_dbg(&intf->dev, "bin file for XC selected\n");
54
55 } else {
56 r = -EINVAL;
57 goto error;
58 }
59
60 r = request_firmware(&fw, fw_name, &intf->dev);
61 if (r) {
62 dev_err(&intf->dev, "request_firmware failed (%d)\n", r);
63 goto error;
64 }
65 fpga_dmabuff = kmalloc(PLF_FPGA_STATUS_LEN, GFP_KERNEL);
66
67 if (!fpga_dmabuff) {
68 r = -ENOMEM;
69 goto error_free_fw;
70 }
71 send_vendor_request(udev, PLF_VNDR_FPGA_SET_REQ,
72 fpga_dmabuff, PLF_FPGA_STATUS_LEN);
73
74 send_vendor_command(udev, PLF_VNDR_FPGA_SET_CMD, NULL, 0);
75
76 if (fpga_dmabuff[0] != PLF_FPGA_MG) {
77 dev_err(&intf->dev, "fpga_dmabuff[0] is wrong\n");
78 r = -EINVAL;
79 goto error_free_fw;
80 }
81
82 for (fw_data_i = 0; fw_data_i < fw->size;) {
83 int tbuf_idx;
84
85 if ((fw->size - fw_data_i) < blk_tran_len)
86 blk_tran_len = fw->size - fw_data_i;
87
88 fw_data = kmemdup(&fw->data[fw_data_i], blk_tran_len,
89 GFP_KERNEL);
90 if (!fw_data) {
91 r = -ENOMEM;
92 goto error_free_fw;
93 }
94
95 for (tbuf_idx = 0; tbuf_idx < blk_tran_len; tbuf_idx++) {
96 /* u8 bit reverse */
97 fw_data[tbuf_idx] = bitrev8(fw_data[tbuf_idx]);
98 }
99 r = usb_bulk_msg(udev,
100 usb_sndbulkpipe(interface_to_usbdev(intf),
101 fpga_dmabuff[0] & 0xff),
102 fw_data,
103 blk_tran_len,
104 &actual_length,
105 2 * PLF_USB_TIMEOUT);
106
107 if (r)
108 dev_err(&intf->dev, "Bulk msg failed (%d)\n", r);
109
110 kfree(fw_data);
111 fw_data_i += blk_tran_len;
112 }
113
114 kfree(fpga_dmabuff);
115 fpga_dmabuff = kmalloc(PLF_FPGA_STATE_LEN, GFP_KERNEL);
116 if (!fpga_dmabuff) {
117 r = -ENOMEM;
118 goto error_free_fw;
119 }
120 memset(fpga_dmabuff, 0xff, PLF_FPGA_STATE_LEN);
121
122 send_vendor_request(udev, PLF_VNDR_FPGA_STATE_REQ, fpga_dmabuff,
123 PLF_FPGA_STATE_LEN);
124
125 dev_dbg(&intf->dev, "%*ph\n", 8, fpga_dmabuff);
126
127 if (fpga_dmabuff[0] != 0) {
128 r = -EINVAL;
129 goto error_free_fw;
130 }
131
132 send_vendor_command(udev, PLF_VNDR_FPGA_STATE_CMD, NULL, 0);
133
134 msleep(PLF_MSLEEP_TIME);
135
136error_free_fw:
137 kfree(fpga_dmabuff);
138 release_firmware(fw);
139error:
140 return r;
141}
142
143int plfxlc_download_xl_firmware(struct usb_interface *intf)
144{
145 struct usb_device *udev = interface_to_usbdev(intf);
146 const struct firmware *fwp = NULL;
147 struct plfxlc_firmware_file file = {0};
148 const char *fw_pack;
149 int s, r;
150 u8 *buf;
151 u32 i;
152
153 r = send_vendor_command(udev, PLF_VNDR_XL_FW_CMD, NULL, 0);
154 msleep(PLF_MSLEEP_TIME);
155
156 if (r) {
157 dev_err(&intf->dev, "vendor command failed (%d)\n", r);
158 return -EINVAL;
159 }
160 /* Code for single pack file download */
161
162 fw_pack = "plfxlc/lifi-xl.bin";
163
164 r = request_firmware(&fwp, fw_pack, &intf->dev);
165 if (r) {
166 dev_err(&intf->dev, "Request_firmware failed (%d)\n", r);
167 return -EINVAL;
168 }
169 file.total_files = get_unaligned_le32(&fwp->data[0]);
170 file.total_size = get_unaligned_le32(&fwp->size);
171
172 dev_dbg(&intf->dev, "XL Firmware (%d, %d)\n",
173 file.total_files, file.total_size);
174
175 buf = kzalloc(PLF_XL_BUF_LEN, GFP_KERNEL);
176 if (!buf) {
177 release_firmware(fwp);
178 return -ENOMEM;
179 }
180
181 if (file.total_files > 10) {
182 dev_err(&intf->dev, "Too many files (%d)\n", file.total_files);
183 release_firmware(fwp);
184 kfree(buf);
185 return -EINVAL;
186 }
187
188 /* Download firmware files in multiple steps */
189 for (s = 0; s < file.total_files; s++) {
190 buf[0] = s;
191 r = send_vendor_command(udev, PLF_VNDR_XL_FILE_CMD, buf,
192 PLF_XL_BUF_LEN);
193
194 if (s < file.total_files - 1)
195 file.size = get_unaligned_le32(&fwp->data[4 + ((s + 1) * 4)])
196 - get_unaligned_le32(&fwp->data[4 + (s) * 4]);
197 else
198 file.size = file.total_size -
199 get_unaligned_le32(&fwp->data[4 + (s) * 4]);
200
201 if (file.size > file.total_size || file.size > 60000) {
202 dev_err(&intf->dev, "File size is too large (%d)\n", file.size);
203 break;
204 }
205
206 file.start_addr = get_unaligned_le32(&fwp->data[4 + (s * 4)]);
207
208 if (file.size % PLF_XL_BUF_LEN && s < 2)
209 file.size += PLF_XL_BUF_LEN - file.size % PLF_XL_BUF_LEN;
210
211 file.control_packets = file.size / PLF_XL_BUF_LEN;
212
213 for (i = 0; i < file.control_packets; i++) {
214 memcpy(buf,
215 &fwp->data[file.start_addr + (i * PLF_XL_BUF_LEN)],
216 PLF_XL_BUF_LEN);
217 r = send_vendor_command(udev, PLF_VNDR_XL_DATA_CMD, buf,
218 PLF_XL_BUF_LEN);
219 }
220 dev_dbg(&intf->dev, "fw-dw step=%d,r=%d size=%d\n", s, r,
221 file.size);
222 }
223 release_firmware(fwp);
224 kfree(buf);
225
226 /* Code for single pack file download ends fw download finish */
227
228 r = send_vendor_command(udev, PLF_VNDR_XL_EX_CMD, NULL, 0);
229 dev_dbg(&intf->dev, "Download fpga (4) (%d)\n", r);
230
231 return 0;
232}
233
234int plfxlc_upload_mac_and_serial(struct usb_interface *intf,
235 unsigned char *hw_address,
236 unsigned char *serial_number)
237{
238 struct usb_device *udev = interface_to_usbdev(intf);
239 unsigned long long firmware_version;
240 unsigned char *dma_buffer = NULL;
241
242 dma_buffer = kmalloc(PLF_SERIAL_LEN, GFP_KERNEL);
243 if (!dma_buffer)
244 return -ENOMEM;
245
246 BUILD_BUG_ON(ETH_ALEN > PLF_SERIAL_LEN);
247 BUILD_BUG_ON(PLF_FW_VER_LEN > PLF_SERIAL_LEN);
248
249 send_vendor_request(udev, PLF_MAC_VENDOR_REQUEST, dma_buffer,
250 ETH_ALEN);
251
252 memcpy(hw_address, dma_buffer, ETH_ALEN);
253
254 send_vendor_request(udev, PLF_SERIAL_NUMBER_VENDOR_REQUEST,
255 dma_buffer, PLF_SERIAL_LEN);
256
257 send_vendor_request(udev, PLF_SERIAL_NUMBER_VENDOR_REQUEST,
258 dma_buffer, PLF_SERIAL_LEN);
259
260 memcpy(serial_number, dma_buffer, PLF_SERIAL_LEN);
261
262 memset(dma_buffer, 0x00, PLF_SERIAL_LEN);
263
264 send_vendor_request(udev, PLF_FIRMWARE_VERSION_VENDOR_REQUEST,
265 (unsigned char *)dma_buffer, PLF_FW_VER_LEN);
266
267 memcpy(&firmware_version, dma_buffer, PLF_FW_VER_LEN);
268
269 dev_info(&intf->dev, "Firmware Version: %llu\n", firmware_version);
270 kfree(dma_buffer);
271
272 dev_dbg(&intf->dev, "Mac: %pM\n", hw_address);
273
274 return 0;
275}
276