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
30int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_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_dev_dbg(hdev, "QCA Version Request");
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_EV_VENDOR, HCI_INIT_TIMEOUT);
43 if (IS_ERR(skb)) {
44 err = PTR_ERR(skb);
45 bt_dev_err(hdev, "Reading QCA version information failed (%d)",
46 err);
47 return err;
48 }
49
50 if (skb->len != sizeof(*edl) + sizeof(*ver)) {
51 bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
52 err = -EILSEQ;
53 goto out;
54 }
55
56 edl = (struct edl_event_hdr *)(skb->data);
57 if (!edl) {
58 bt_dev_err(hdev, "QCA TLV with no header");
59 err = -EILSEQ;
60 goto out;
61 }
62
63 if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
64 edl->rtype != EDL_APP_VER_RES_EVT) {
65 bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
66 edl->rtype);
67 err = -EIO;
68 goto out;
69 }
70
71 ver = (struct rome_version *)(edl->data);
72
73 BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
74 BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
75 BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
76 BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
77
78 /* QCA chipset version can be decided by patch and SoC
79 * version, combination with upper 2 bytes from SoC
80 * and lower 2 bytes from patch will be used.
81 */
82 *soc_version = (le32_to_cpu(ver->soc_id) << 16) |
83 (le16_to_cpu(ver->rome_ver) & 0x0000ffff);
84 if (*soc_version == 0)
85 err = -EILSEQ;
86
87out:
88 kfree_skb(skb);
89 if (err)
90 bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
91
92 return err;
93}
94EXPORT_SYMBOL_GPL(qca_read_soc_version);
95
96static int qca_send_reset(struct hci_dev *hdev)
97{
98 struct sk_buff *skb;
99 int err;
100
101 bt_dev_dbg(hdev, "QCA HCI_RESET");
102
103 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
104 if (IS_ERR(skb)) {
105 err = PTR_ERR(skb);
106 bt_dev_err(hdev, "QCA Reset failed (%d)", err);
107 return err;
108 }
109
110 kfree_skb(skb);
111
112 return 0;
113}
114
115static void qca_tlv_check_data(struct rome_config *config,
116 const struct firmware *fw)
117{
118 const u8 *data;
119 u32 type_len;
120 u16 tag_id, tag_len;
121 int idx, length;
122 struct tlv_type_hdr *tlv;
123 struct tlv_type_patch *tlv_patch;
124 struct tlv_type_nvm *tlv_nvm;
125
126 tlv = (struct tlv_type_hdr *)fw->data;
127
128 type_len = le32_to_cpu(tlv->type_len);
129 length = (type_len >> 8) & 0x00ffffff;
130
131 BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
132 BT_DBG("Length\t\t : %d bytes", length);
133
134 config->dnld_mode = ROME_SKIP_EVT_NONE;
135
136 switch (config->type) {
137 case TLV_TYPE_PATCH:
138 tlv_patch = (struct tlv_type_patch *)tlv->data;
139
140 /* For Rome version 1.1 to 3.1, all segment commands
141 * are acked by a vendor specific event (VSE).
142 * For Rome >= 3.2, the download mode field indicates
143 * if VSE is skipped by the controller.
144 * In case VSE is skipped, only the last segment is acked.
145 */
146 config->dnld_mode = tlv_patch->download_mode;
147
148 BT_DBG("Total Length : %d bytes",
149 le32_to_cpu(tlv_patch->total_size));
150 BT_DBG("Patch Data Length : %d bytes",
151 le32_to_cpu(tlv_patch->data_length));
152 BT_DBG("Signing Format Version : 0x%x",
153 tlv_patch->format_version);
154 BT_DBG("Signature Algorithm : 0x%x",
155 tlv_patch->signature);
156 BT_DBG("Download mode : 0x%x",
157 tlv_patch->download_mode);
158 BT_DBG("Reserved : 0x%x",
159 tlv_patch->reserved1);
160 BT_DBG("Product ID : 0x%04x",
161 le16_to_cpu(tlv_patch->product_id));
162 BT_DBG("Rom Build Version : 0x%04x",
163 le16_to_cpu(tlv_patch->rom_build));
164 BT_DBG("Patch Version : 0x%04x",
165 le16_to_cpu(tlv_patch->patch_version));
166 BT_DBG("Reserved : 0x%x",
167 le16_to_cpu(tlv_patch->reserved2));
168 BT_DBG("Patch Entry Address : 0x%x",
169 le32_to_cpu(tlv_patch->entry));
170 break;
171
172 case TLV_TYPE_NVM:
173 idx = 0;
174 data = tlv->data;
175 while (idx < length) {
176 tlv_nvm = (struct tlv_type_nvm *)(data + idx);
177
178 tag_id = le16_to_cpu(tlv_nvm->tag_id);
179 tag_len = le16_to_cpu(tlv_nvm->tag_len);
180
181 /* Update NVM tags as needed */
182 switch (tag_id) {
183 case EDL_TAG_ID_HCI:
184 /* HCI transport layer parameters
185 * enabling software inband sleep
186 * onto controller side.
187 */
188 tlv_nvm->data[0] |= 0x80;
189
190 /* UART Baud Rate */
191 tlv_nvm->data[2] = config->user_baud_rate;
192
193 break;
194
195 case EDL_TAG_ID_DEEP_SLEEP:
196 /* Sleep enable mask
197 * enabling deep sleep feature on controller.
198 */
199 tlv_nvm->data[0] |= 0x01;
200
201 break;
202 }
203
204 idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
205 }
206 break;
207
208 default:
209 BT_ERR("Unknown TLV type %d", config->type);
210 break;
211 }
212}
213
214static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
215 const u8 *data, enum rome_tlv_dnld_mode mode)
216{
217 struct sk_buff *skb;
218 struct edl_event_hdr *edl;
219 struct tlv_seg_resp *tlv_resp;
220 u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
221 int err = 0;
222
223 cmd[0] = EDL_PATCH_TLV_REQ_CMD;
224 cmd[1] = seg_size;
225 memcpy(cmd + 2, data, seg_size);
226
227 if (mode == ROME_SKIP_EVT_VSE_CC || mode == ROME_SKIP_EVT_VSE)
228 return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
229 cmd);
230
231 skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
232 HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
233 if (IS_ERR(skb)) {
234 err = PTR_ERR(skb);
235 bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
236 return err;
237 }
238
239 if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
240 bt_dev_err(hdev, "QCA TLV response size mismatch");
241 err = -EILSEQ;
242 goto out;
243 }
244
245 edl = (struct edl_event_hdr *)(skb->data);
246 if (!edl) {
247 bt_dev_err(hdev, "TLV with no header");
248 err = -EILSEQ;
249 goto out;
250 }
251
252 tlv_resp = (struct tlv_seg_resp *)(edl->data);
253
254 if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
255 edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
256 bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
257 edl->cresp, edl->rtype, tlv_resp->result);
258 err = -EIO;
259 }
260
261out:
262 kfree_skb(skb);
263
264 return err;
265}
266
267static int qca_download_firmware(struct hci_dev *hdev,
268 struct rome_config *config)
269{
270 const struct firmware *fw;
271 const u8 *segment;
272 int ret, remain, i = 0;
273
274 bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
275
276 ret = request_firmware(&fw, config->fwname, &hdev->dev);
277 if (ret) {
278 bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
279 config->fwname, ret);
280 return ret;
281 }
282
283 qca_tlv_check_data(config, fw);
284
285 segment = fw->data;
286 remain = fw->size;
287 while (remain > 0) {
288 int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
289
290 bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
291
292 remain -= segsize;
293 /* The last segment is always acked regardless download mode */
294 if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
295 config->dnld_mode = ROME_SKIP_EVT_NONE;
296
297 ret = qca_tlv_send_segment(hdev, segsize, segment,
298 config->dnld_mode);
299 if (ret)
300 break;
301
302 segment += segsize;
303 }
304
305 release_firmware(fw);
306
307 return ret;
308}
309
310int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
311{
312 struct sk_buff *skb;
313 u8 cmd[9];
314 int err;
315
316 cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
317 cmd[1] = 0x02; /* TAG ID */
318 cmd[2] = sizeof(bdaddr_t); /* size */
319 memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
320 skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
321 HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
322 if (IS_ERR(skb)) {
323 err = PTR_ERR(skb);
324 bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
325 return err;
326 }
327
328 kfree_skb(skb);
329
330 return 0;
331}
332EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
333
334int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
335 enum qca_btsoc_type soc_type, u32 soc_ver)
336{
337 struct rome_config config;
338 int err;
339 u8 rom_ver;
340
341 bt_dev_dbg(hdev, "QCA setup on UART");
342
343 config.user_baud_rate = baudrate;
344
345 /* Download rampatch file */
346 config.type = TLV_TYPE_PATCH;
347 if (soc_type == QCA_WCN3990) {
348 /* Firmware files to download are based on ROM version.
349 * ROM version is derived from last two bytes of soc_ver.
350 */
351 rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
352 (soc_ver & 0x0000000f);
353 snprintf(config.fwname, sizeof(config.fwname),
354 "qca/crbtfw%02x.tlv", rom_ver);
355 } else {
356 snprintf(config.fwname, sizeof(config.fwname),
357 "qca/rampatch_%08x.bin", soc_ver);
358 }
359
360 err = qca_download_firmware(hdev, &config);
361 if (err < 0) {
362 bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
363 return err;
364 }
365
366 /* Download NVM configuration */
367 config.type = TLV_TYPE_NVM;
368 if (soc_type == QCA_WCN3990)
369 snprintf(config.fwname, sizeof(config.fwname),
370 "qca/crnv%02x.bin", rom_ver);
371 else
372 snprintf(config.fwname, sizeof(config.fwname),
373 "qca/nvm_%08x.bin", soc_ver);
374
375 err = qca_download_firmware(hdev, &config);
376 if (err < 0) {
377 bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
378 return err;
379 }
380
381 /* Perform HCI reset */
382 err = qca_send_reset(hdev);
383 if (err < 0) {
384 bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
385 return err;
386 }
387
388 bt_dev_info(hdev, "QCA setup on UART is completed");
389
390 return 0;
391}
392EXPORT_SYMBOL_GPL(qca_uart_setup);
393
394int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
395{
396 struct sk_buff *skb;
397 int err;
398
399 skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
400 HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
401 if (IS_ERR(skb)) {
402 err = PTR_ERR(skb);
403 bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
404 return err;
405 }
406
407 kfree_skb(skb);
408
409 return 0;
410}
411EXPORT_SYMBOL_GPL(qca_set_bdaddr);
412
413MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
414MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
415MODULE_VERSION(VERSION);
416MODULE_LICENSE("GPL");
417