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1/*
2 * Bluetooth supports for Qualcomm Atheros chips
3 *
4 * Copyright (c) 2015 The Linux Foundation. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20#include <linux/module.h>
21#include <linux/firmware.h>
22
23#include <net/bluetooth/bluetooth.h>
24#include <net/bluetooth/hci_core.h>
25
26#include "btqca.h"
27
28#define VERSION "0.1"
29
30static int rome_patch_ver_req(struct hci_dev *hdev, u32 *rome_version)
31{
32 struct sk_buff *skb;
33 struct edl_event_hdr *edl;
34 struct rome_version *ver;
35 char cmd;
36 int err = 0;
37
38 BT_DBG("%s: ROME Patch Version Request", hdev->name);
39
40 cmd = EDL_PATCH_VER_REQ_CMD;
41 skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
42 &cmd, HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
43 if (IS_ERR(skb)) {
44 err = PTR_ERR(skb);
45 BT_ERR("%s: Failed to read version of ROME (%d)", hdev->name,
46 err);
47 return err;
48 }
49
50 if (skb->len != sizeof(*edl) + sizeof(*ver)) {
51 BT_ERR("%s: Version size mismatch len %d", hdev->name,
52 skb->len);
53 err = -EILSEQ;
54 goto out;
55 }
56
57 edl = (struct edl_event_hdr *)(skb->data);
58 if (!edl) {
59 BT_ERR("%s: TLV with no header", hdev->name);
60 err = -EILSEQ;
61 goto out;
62 }
63
64 if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
65 edl->rtype != EDL_APP_VER_RES_EVT) {
66 BT_ERR("%s: Wrong packet received %d %d", hdev->name,
67 edl->cresp, edl->rtype);
68 err = -EIO;
69 goto out;
70 }
71
72 ver = (struct rome_version *)(edl->data);
73
74 BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
75 BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
76 BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
77 BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
78
79 /* ROME chipset version can be decided by patch and SoC
80 * version, combination with upper 2 bytes from SoC
81 * and lower 2 bytes from patch will be used.
82 */
83 *rome_version = (le32_to_cpu(ver->soc_id) << 16) |
84 (le16_to_cpu(ver->rome_ver) & 0x0000ffff);
85
86out:
87 kfree_skb(skb);
88
89 return err;
90}
91
92static int rome_reset(struct hci_dev *hdev)
93{
94 struct sk_buff *skb;
95 int err;
96
97 BT_DBG("%s: ROME HCI_RESET", hdev->name);
98
99 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
100 if (IS_ERR(skb)) {
101 err = PTR_ERR(skb);
102 BT_ERR("%s: Reset failed (%d)", hdev->name, err);
103 return err;
104 }
105
106 kfree_skb(skb);
107
108 return 0;
109}
110
111static void rome_tlv_check_data(struct rome_config *config,
112 const struct firmware *fw)
113{
114 const u8 *data;
115 u32 type_len;
116 u16 tag_id, tag_len;
117 int idx, length;
118 struct tlv_type_hdr *tlv;
119 struct tlv_type_patch *tlv_patch;
120 struct tlv_type_nvm *tlv_nvm;
121
122 tlv = (struct tlv_type_hdr *)fw->data;
123
124 type_len = le32_to_cpu(tlv->type_len);
125 length = (type_len >> 8) & 0x00ffffff;
126
127 BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
128 BT_DBG("Length\t\t : %d bytes", length);
129
130 switch (config->type) {
131 case TLV_TYPE_PATCH:
132 tlv_patch = (struct tlv_type_patch *)tlv->data;
133 BT_DBG("Total Length\t\t : %d bytes",
134 le32_to_cpu(tlv_patch->total_size));
135 BT_DBG("Patch Data Length\t : %d bytes",
136 le32_to_cpu(tlv_patch->data_length));
137 BT_DBG("Signing Format Version : 0x%x",
138 tlv_patch->format_version);
139 BT_DBG("Signature Algorithm\t : 0x%x",
140 tlv_patch->signature);
141 BT_DBG("Reserved\t\t : 0x%x",
142 le16_to_cpu(tlv_patch->reserved1));
143 BT_DBG("Product ID\t\t : 0x%04x",
144 le16_to_cpu(tlv_patch->product_id));
145 BT_DBG("Rom Build Version\t : 0x%04x",
146 le16_to_cpu(tlv_patch->rom_build));
147 BT_DBG("Patch Version\t\t : 0x%04x",
148 le16_to_cpu(tlv_patch->patch_version));
149 BT_DBG("Reserved\t\t : 0x%x",
150 le16_to_cpu(tlv_patch->reserved2));
151 BT_DBG("Patch Entry Address\t : 0x%x",
152 le32_to_cpu(tlv_patch->entry));
153 break;
154
155 case TLV_TYPE_NVM:
156 idx = 0;
157 data = tlv->data;
158 while (idx < length) {
159 tlv_nvm = (struct tlv_type_nvm *)(data + idx);
160
161 tag_id = le16_to_cpu(tlv_nvm->tag_id);
162 tag_len = le16_to_cpu(tlv_nvm->tag_len);
163
164 /* Update NVM tags as needed */
165 switch (tag_id) {
166 case EDL_TAG_ID_HCI:
167 /* HCI transport layer parameters
168 * enabling software inband sleep
169 * onto controller side.
170 */
171 tlv_nvm->data[0] |= 0x80;
172
173 /* UART Baud Rate */
174 tlv_nvm->data[2] = config->user_baud_rate;
175
176 break;
177
178 case EDL_TAG_ID_DEEP_SLEEP:
179 /* Sleep enable mask
180 * enabling deep sleep feature on controller.
181 */
182 tlv_nvm->data[0] |= 0x01;
183
184 break;
185 }
186
187 idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
188 }
189 break;
190
191 default:
192 BT_ERR("Unknown TLV type %d", config->type);
193 break;
194 }
195}
196
197static int rome_tlv_send_segment(struct hci_dev *hdev, int idx, int seg_size,
198 const u8 *data)
199{
200 struct sk_buff *skb;
201 struct edl_event_hdr *edl;
202 struct tlv_seg_resp *tlv_resp;
203 u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
204 int err = 0;
205
206 BT_DBG("%s: Download segment #%d size %d", hdev->name, idx, seg_size);
207
208 cmd[0] = EDL_PATCH_TLV_REQ_CMD;
209 cmd[1] = seg_size;
210 memcpy(cmd + 2, data, seg_size);
211
212 skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
213 HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
214 if (IS_ERR(skb)) {
215 err = PTR_ERR(skb);
216 BT_ERR("%s: Failed to send TLV segment (%d)", hdev->name, err);
217 return err;
218 }
219
220 if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
221 BT_ERR("%s: TLV response size mismatch", hdev->name);
222 err = -EILSEQ;
223 goto out;
224 }
225
226 edl = (struct edl_event_hdr *)(skb->data);
227 if (!edl) {
228 BT_ERR("%s: TLV with no header", hdev->name);
229 err = -EILSEQ;
230 goto out;
231 }
232
233 tlv_resp = (struct tlv_seg_resp *)(edl->data);
234
235 if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
236 edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
237 BT_ERR("%s: TLV with error stat 0x%x rtype 0x%x (0x%x)",
238 hdev->name, edl->cresp, edl->rtype, tlv_resp->result);
239 err = -EIO;
240 }
241
242out:
243 kfree_skb(skb);
244
245 return err;
246}
247
248static int rome_tlv_download_request(struct hci_dev *hdev,
249 const struct firmware *fw)
250{
251 const u8 *buffer, *data;
252 int total_segment, remain_size;
253 int ret, i;
254
255 if (!fw || !fw->data)
256 return -EINVAL;
257
258 total_segment = fw->size / MAX_SIZE_PER_TLV_SEGMENT;
259 remain_size = fw->size % MAX_SIZE_PER_TLV_SEGMENT;
260
261 BT_DBG("%s: Total segment num %d remain size %d total size %zu",
262 hdev->name, total_segment, remain_size, fw->size);
263
264 data = fw->data;
265 for (i = 0; i < total_segment; i++) {
266 buffer = data + i * MAX_SIZE_PER_TLV_SEGMENT;
267 ret = rome_tlv_send_segment(hdev, i, MAX_SIZE_PER_TLV_SEGMENT,
268 buffer);
269 if (ret < 0)
270 return -EIO;
271 }
272
273 if (remain_size) {
274 buffer = data + total_segment * MAX_SIZE_PER_TLV_SEGMENT;
275 ret = rome_tlv_send_segment(hdev, total_segment, remain_size,
276 buffer);
277 if (ret < 0)
278 return -EIO;
279 }
280
281 return 0;
282}
283
284static int rome_download_firmware(struct hci_dev *hdev,
285 struct rome_config *config)
286{
287 const struct firmware *fw;
288 int ret;
289
290 bt_dev_info(hdev, "ROME Downloading %s", config->fwname);
291
292 ret = request_firmware(&fw, config->fwname, &hdev->dev);
293 if (ret) {
294 BT_ERR("%s: Failed to request file: %s (%d)", hdev->name,
295 config->fwname, ret);
296 return ret;
297 }
298
299 rome_tlv_check_data(config, fw);
300
301 ret = rome_tlv_download_request(hdev, fw);
302 if (ret) {
303 BT_ERR("%s: Failed to download file: %s (%d)", hdev->name,
304 config->fwname, ret);
305 }
306
307 release_firmware(fw);
308
309 return ret;
310}
311
312int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
313{
314 struct sk_buff *skb;
315 u8 cmd[9];
316 int err;
317
318 cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
319 cmd[1] = 0x02; /* TAG ID */
320 cmd[2] = sizeof(bdaddr_t); /* size */
321 memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
322 skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
323 HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
324 if (IS_ERR(skb)) {
325 err = PTR_ERR(skb);
326 BT_ERR("%s: Change address command failed (%d)",
327 hdev->name, err);
328 return err;
329 }
330
331 kfree_skb(skb);
332
333 return 0;
334}
335EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
336
337int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
338{
339 u32 rome_ver = 0;
340 struct rome_config config;
341 int err;
342
343 BT_DBG("%s: ROME setup on UART", hdev->name);
344
345 config.user_baud_rate = baudrate;
346
347 /* Get ROME version information */
348 err = rome_patch_ver_req(hdev, &rome_ver);
349 if (err < 0 || rome_ver == 0) {
350 BT_ERR("%s: Failed to get version 0x%x", hdev->name, err);
351 return err;
352 }
353
354 bt_dev_info(hdev, "ROME controller version 0x%08x", rome_ver);
355
356 /* Download rampatch file */
357 config.type = TLV_TYPE_PATCH;
358 snprintf(config.fwname, sizeof(config.fwname), "qca/rampatch_%08x.bin",
359 rome_ver);
360 err = rome_download_firmware(hdev, &config);
361 if (err < 0) {
362 BT_ERR("%s: Failed to download patch (%d)", hdev->name, err);
363 return err;
364 }
365
366 /* Download NVM configuration */
367 config.type = TLV_TYPE_NVM;
368 snprintf(config.fwname, sizeof(config.fwname), "qca/nvm_%08x.bin",
369 rome_ver);
370 err = rome_download_firmware(hdev, &config);
371 if (err < 0) {
372 BT_ERR("%s: Failed to download NVM (%d)", hdev->name, err);
373 return err;
374 }
375
376 /* Perform HCI reset */
377 err = rome_reset(hdev);
378 if (err < 0) {
379 BT_ERR("%s: Failed to run HCI_RESET (%d)", hdev->name, err);
380 return err;
381 }
382
383 bt_dev_info(hdev, "ROME setup on UART is completed");
384
385 return 0;
386}
387EXPORT_SYMBOL_GPL(qca_uart_setup_rome);
388
389MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
390MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
391MODULE_VERSION(VERSION);
392MODULE_LICENSE("GPL");