1 // SPDX-License-Identifier: GPL-2.0-only
3 * Bluetooth supports for Qualcomm Atheros chips
5 * Copyright (c) 2015 The Linux Foundation. All rights reserved.
7 #include <linux/module.h>
8 #include <linux/firmware.h>
10 #include <net/bluetooth/bluetooth.h>
11 #include <net/bluetooth/hci_core.h>
17 int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
20 struct edl_event_hdr *edl;
21 struct rome_version *ver;
25 bt_dev_dbg(hdev, "QCA Version Request");
27 cmd = EDL_PATCH_VER_REQ_CMD;
28 skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
29 &cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
32 bt_dev_err(hdev, "Reading QCA version information failed (%d)",
37 if (skb->len != sizeof(*edl) + sizeof(*ver)) {
38 bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
43 edl = (struct edl_event_hdr *)(skb->data);
45 bt_dev_err(hdev, "QCA TLV with no header");
50 if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
51 edl->rtype != EDL_APP_VER_RES_EVT) {
52 bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
58 ver = (struct rome_version *)(edl->data);
60 BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
61 BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
62 BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
63 BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
65 /* QCA chipset version can be decided by patch and SoC
66 * version, combination with upper 2 bytes from SoC
67 * and lower 2 bytes from patch will be used.
69 *soc_version = (le32_to_cpu(ver->soc_id) << 16) |
70 (le16_to_cpu(ver->rome_ver) & 0x0000ffff);
71 if (*soc_version == 0)
77 bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
81 EXPORT_SYMBOL_GPL(qca_read_soc_version);
83 static int qca_send_reset(struct hci_dev *hdev)
88 bt_dev_dbg(hdev, "QCA HCI_RESET");
90 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
93 bt_dev_err(hdev, "QCA Reset failed (%d)", err);
102 int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
107 bt_dev_dbg(hdev, "QCA pre shutdown cmd");
109 skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
110 NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
114 bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
122 EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
124 static void qca_tlv_check_data(struct rome_config *config,
125 const struct firmware *fw)
131 struct tlv_type_hdr *tlv;
132 struct tlv_type_patch *tlv_patch;
133 struct tlv_type_nvm *tlv_nvm;
135 tlv = (struct tlv_type_hdr *)fw->data;
137 type_len = le32_to_cpu(tlv->type_len);
138 length = (type_len >> 8) & 0x00ffffff;
140 BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
141 BT_DBG("Length\t\t : %d bytes", length);
143 config->dnld_mode = ROME_SKIP_EVT_NONE;
144 config->dnld_type = ROME_SKIP_EVT_NONE;
146 switch (config->type) {
148 tlv_patch = (struct tlv_type_patch *)tlv->data;
150 /* For Rome version 1.1 to 3.1, all segment commands
151 * are acked by a vendor specific event (VSE).
152 * For Rome >= 3.2, the download mode field indicates
153 * if VSE is skipped by the controller.
154 * In case VSE is skipped, only the last segment is acked.
156 config->dnld_mode = tlv_patch->download_mode;
157 config->dnld_type = config->dnld_mode;
159 BT_DBG("Total Length : %d bytes",
160 le32_to_cpu(tlv_patch->total_size));
161 BT_DBG("Patch Data Length : %d bytes",
162 le32_to_cpu(tlv_patch->data_length));
163 BT_DBG("Signing Format Version : 0x%x",
164 tlv_patch->format_version);
165 BT_DBG("Signature Algorithm : 0x%x",
166 tlv_patch->signature);
167 BT_DBG("Download mode : 0x%x",
168 tlv_patch->download_mode);
169 BT_DBG("Reserved : 0x%x",
170 tlv_patch->reserved1);
171 BT_DBG("Product ID : 0x%04x",
172 le16_to_cpu(tlv_patch->product_id));
173 BT_DBG("Rom Build Version : 0x%04x",
174 le16_to_cpu(tlv_patch->rom_build));
175 BT_DBG("Patch Version : 0x%04x",
176 le16_to_cpu(tlv_patch->patch_version));
177 BT_DBG("Reserved : 0x%x",
178 le16_to_cpu(tlv_patch->reserved2));
179 BT_DBG("Patch Entry Address : 0x%x",
180 le32_to_cpu(tlv_patch->entry));
186 while (idx < length) {
187 tlv_nvm = (struct tlv_type_nvm *)(data + idx);
189 tag_id = le16_to_cpu(tlv_nvm->tag_id);
190 tag_len = le16_to_cpu(tlv_nvm->tag_len);
192 /* Update NVM tags as needed */
195 /* HCI transport layer parameters
196 * enabling software inband sleep
197 * onto controller side.
199 tlv_nvm->data[0] |= 0x80;
202 tlv_nvm->data[2] = config->user_baud_rate;
206 case EDL_TAG_ID_DEEP_SLEEP:
208 * enabling deep sleep feature on controller.
210 tlv_nvm->data[0] |= 0x01;
215 idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
220 BT_ERR("Unknown TLV type %d", config->type);
225 static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
226 const u8 *data, enum rome_tlv_dnld_mode mode)
229 struct edl_event_hdr *edl;
230 struct tlv_seg_resp *tlv_resp;
231 u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
234 cmd[0] = EDL_PATCH_TLV_REQ_CMD;
236 memcpy(cmd + 2, data, seg_size);
238 if (mode == ROME_SKIP_EVT_VSE_CC || mode == ROME_SKIP_EVT_VSE)
239 return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
242 skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
243 HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
246 bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
250 if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
251 bt_dev_err(hdev, "QCA TLV response size mismatch");
256 edl = (struct edl_event_hdr *)(skb->data);
258 bt_dev_err(hdev, "TLV with no header");
263 tlv_resp = (struct tlv_seg_resp *)(edl->data);
265 if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
266 edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
267 bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
268 edl->cresp, edl->rtype, tlv_resp->result);
278 static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
280 struct hci_event_hdr *hdr;
281 struct hci_ev_cmd_complete *evt;
284 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
288 hdr = skb_put(skb, sizeof(*hdr));
289 hdr->evt = HCI_EV_CMD_COMPLETE;
290 hdr->plen = sizeof(*evt) + 1;
292 evt = skb_put(skb, sizeof(*evt));
294 evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);
296 skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
298 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
300 return hci_recv_frame(hdev, skb);
303 static int qca_download_firmware(struct hci_dev *hdev,
304 struct rome_config *config)
306 const struct firmware *fw;
308 int ret, remain, i = 0;
310 bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
312 ret = reject_firmware(&fw, config->fwname, &hdev->dev);
314 bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
315 config->fwname, ret);
319 qca_tlv_check_data(config, fw);
324 int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
326 bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
329 /* The last segment is always acked regardless download mode */
330 if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
331 config->dnld_mode = ROME_SKIP_EVT_NONE;
333 ret = qca_tlv_send_segment(hdev, segsize, segment,
341 /* Latest qualcomm chipsets are not sending a command complete event
342 * for every fw packet sent. They only respond with a vendor specific
343 * event for the last packet. This optimization in the chip will
344 * decrease the BT in initialization time. Here we will inject a command
345 * complete event to avoid a command timeout error message.
347 if (config->dnld_type == ROME_SKIP_EVT_VSE_CC ||
348 config->dnld_type == ROME_SKIP_EVT_VSE)
349 ret = qca_inject_cmd_complete_event(hdev);
352 release_firmware(fw);
357 int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
363 cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
364 cmd[1] = 0x02; /* TAG ID */
365 cmd[2] = sizeof(bdaddr_t); /* size */
366 memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
367 skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
368 HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
371 bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
379 EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
381 int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
382 enum qca_btsoc_type soc_type, u32 soc_ver,
383 const char *firmware_name)
385 struct rome_config config;
389 bt_dev_dbg(hdev, "QCA setup on UART");
391 config.user_baud_rate = baudrate;
393 /* Download rampatch file */
394 config.type = TLV_TYPE_PATCH;
395 if (qca_is_wcn399x(soc_type)) {
396 /* Firmware files to download are based on ROM version.
397 * ROM version is derived from last two bytes of soc_ver.
399 rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
400 (soc_ver & 0x0000000f);
401 snprintf(config.fwname, sizeof(config.fwname),
402 "/*(DEBLOBBED)*/", rom_ver);
404 snprintf(config.fwname, sizeof(config.fwname),
405 "/*(DEBLOBBED)*/", soc_ver);
408 err = qca_download_firmware(hdev, &config);
410 bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
414 /* Give the controller some time to get ready to receive the NVM */
417 /* Download NVM configuration */
418 config.type = TLV_TYPE_NVM;
420 snprintf(config.fwname, sizeof(config.fwname),
421 "/*(DEBLOBBED)*/", firmware_name);
422 else if (qca_is_wcn399x(soc_type))
423 snprintf(config.fwname, sizeof(config.fwname),
424 "/*(DEBLOBBED)*/", rom_ver);
426 snprintf(config.fwname, sizeof(config.fwname),
427 "/*(DEBLOBBED)*/", soc_ver);
429 err = qca_download_firmware(hdev, &config);
431 bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
435 /* Perform HCI reset */
436 err = qca_send_reset(hdev);
438 bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
442 bt_dev_info(hdev, "QCA setup on UART is completed");
446 EXPORT_SYMBOL_GPL(qca_uart_setup);
448 int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
453 skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
454 HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
457 bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
465 EXPORT_SYMBOL_GPL(qca_set_bdaddr);
468 MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
469 MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
470 MODULE_VERSION(VERSION);
471 MODULE_LICENSE("GPL");