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linux-sg2042/drivers/bluetooth/btqca.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Bluetooth supports for Qualcomm Atheros chips
*
* Copyright (c) 2015 The Linux Foundation. All rights reserved.
*/
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/vmalloc.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btqca.h"
#define VERSION "0.1"
int qca_read_soc_version(struct hci_dev *hdev, struct qca_btsoc_version *ver,
enum qca_btsoc_type soc_type)
{
struct sk_buff *skb;
struct edl_event_hdr *edl;
char cmd;
int err = 0;
u8 event_type = HCI_EV_VENDOR;
u8 rlen = sizeof(*edl) + sizeof(*ver);
u8 rtype = EDL_APP_VER_RES_EVT;
bt_dev_dbg(hdev, "QCA Version Request");
/* Unlike other SoC's sending version command response as payload to
* VSE event. WCN3991 sends version command response as a payload to
* command complete event.
*/
if (soc_type >= QCA_WCN3991) {
event_type = 0;
rlen += 1;
rtype = EDL_PATCH_VER_REQ_CMD;
}
cmd = EDL_PATCH_VER_REQ_CMD;
skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
&cmd, event_type, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "Reading QCA version information failed (%d)",
err);
return err;
}
if (skb->len != rlen) {
bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
err = -EILSEQ;
goto out;
}
edl = (struct edl_event_hdr *)(skb->data);
if (!edl) {
bt_dev_err(hdev, "QCA TLV with no header");
err = -EILSEQ;
goto out;
}
if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
edl->rtype != rtype) {
bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
edl->rtype);
err = -EIO;
goto out;
}
if (soc_type >= QCA_WCN3991)
memcpy(ver, edl->data + 1, sizeof(*ver));
else
memcpy(ver, &edl->data, sizeof(*ver));
bt_dev_info(hdev, "QCA Product ID :0x%08x",
le32_to_cpu(ver->product_id));
bt_dev_info(hdev, "QCA SOC Version :0x%08x",
le32_to_cpu(ver->soc_id));
bt_dev_info(hdev, "QCA ROM Version :0x%08x",
le16_to_cpu(ver->rom_ver));
bt_dev_info(hdev, "QCA Patch Version:0x%08x",
le16_to_cpu(ver->patch_ver));
if (ver->soc_id == 0 || ver->rom_ver == 0)
err = -EILSEQ;
out:
kfree_skb(skb);
if (err)
bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
return err;
}
EXPORT_SYMBOL_GPL(qca_read_soc_version);
static int qca_read_fw_build_info(struct hci_dev *hdev)
{
struct sk_buff *skb;
struct edl_event_hdr *edl;
char cmd, build_label[QCA_FW_BUILD_VER_LEN];
int build_lbl_len, err = 0;
bt_dev_dbg(hdev, "QCA read fw build info");
cmd = EDL_GET_BUILD_INFO_CMD;
skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
&cmd, 0, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "Reading QCA fw build info failed (%d)",
err);
return err;
}
edl = (struct edl_event_hdr *)(skb->data);
if (!edl) {
bt_dev_err(hdev, "QCA read fw build info with no header");
err = -EILSEQ;
goto out;
}
if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
edl->rtype != EDL_GET_BUILD_INFO_CMD) {
bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
edl->rtype);
err = -EIO;
goto out;
}
build_lbl_len = edl->data[0];
if (build_lbl_len <= QCA_FW_BUILD_VER_LEN - 1) {
memcpy(build_label, edl->data + 1, build_lbl_len);
*(build_label + build_lbl_len) = '\0';
}
hci_set_fw_info(hdev, "%s", build_label);
out:
kfree_skb(skb);
return err;
}
static int qca_send_patch_config_cmd(struct hci_dev *hdev)
{
const u8 cmd[] = { EDL_PATCH_CONFIG_CMD, 0x01, 0, 0, 0 };
struct sk_buff *skb;
struct edl_event_hdr *edl;
int err;
bt_dev_dbg(hdev, "QCA Patch config");
skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, sizeof(cmd),
cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "Sending QCA Patch config failed (%d)", err);
return err;
}
if (skb->len != 2) {
bt_dev_err(hdev, "QCA Patch config cmd size mismatch len %d", skb->len);
err = -EILSEQ;
goto out;
}
edl = (struct edl_event_hdr *)(skb->data);
if (!edl) {
bt_dev_err(hdev, "QCA Patch config with no header");
err = -EILSEQ;
goto out;
}
if (edl->cresp != EDL_PATCH_CONFIG_RES_EVT || edl->rtype != EDL_PATCH_CONFIG_CMD) {
bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
edl->rtype);
err = -EIO;
goto out;
}
err = 0;
out:
kfree_skb(skb);
return err;
}
static int qca_send_reset(struct hci_dev *hdev)
{
struct sk_buff *skb;
int err;
bt_dev_dbg(hdev, "QCA HCI_RESET");
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "QCA Reset failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
{
struct sk_buff *skb;
int err;
bt_dev_dbg(hdev, "QCA pre shutdown cmd");
skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
static void qca_tlv_check_data(struct hci_dev *hdev,
struct qca_fw_config *config,
u8 *fw_data, enum qca_btsoc_type soc_type)
{
const u8 *data;
u32 type_len;
u16 tag_id, tag_len;
int idx, length;
struct tlv_type_hdr *tlv;
struct tlv_type_patch *tlv_patch;
struct tlv_type_nvm *tlv_nvm;
uint8_t nvm_baud_rate = config->user_baud_rate;
config->dnld_mode = QCA_SKIP_EVT_NONE;
config->dnld_type = QCA_SKIP_EVT_NONE;
switch (config->type) {
case ELF_TYPE_PATCH:
config->dnld_mode = QCA_SKIP_EVT_VSE_CC;
config->dnld_type = QCA_SKIP_EVT_VSE_CC;
bt_dev_dbg(hdev, "File Class : 0x%x", fw_data[4]);
bt_dev_dbg(hdev, "Data Encoding : 0x%x", fw_data[5]);
bt_dev_dbg(hdev, "File version : 0x%x", fw_data[6]);
break;
case TLV_TYPE_PATCH:
tlv = (struct tlv_type_hdr *)fw_data;
type_len = le32_to_cpu(tlv->type_len);
tlv_patch = (struct tlv_type_patch *)tlv->data;
/* For Rome version 1.1 to 3.1, all segment commands
* are acked by a vendor specific event (VSE).
* For Rome >= 3.2, the download mode field indicates
* if VSE is skipped by the controller.
* In case VSE is skipped, only the last segment is acked.
*/
config->dnld_mode = tlv_patch->download_mode;
config->dnld_type = config->dnld_mode;
BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
BT_DBG("Total Length : %d bytes",
le32_to_cpu(tlv_patch->total_size));
BT_DBG("Patch Data Length : %d bytes",
le32_to_cpu(tlv_patch->data_length));
BT_DBG("Signing Format Version : 0x%x",
tlv_patch->format_version);
BT_DBG("Signature Algorithm : 0x%x",
tlv_patch->signature);
BT_DBG("Download mode : 0x%x",
tlv_patch->download_mode);
BT_DBG("Reserved : 0x%x",
tlv_patch->reserved1);
BT_DBG("Product ID : 0x%04x",
le16_to_cpu(tlv_patch->product_id));
BT_DBG("Rom Build Version : 0x%04x",
le16_to_cpu(tlv_patch->rom_build));
BT_DBG("Patch Version : 0x%04x",
le16_to_cpu(tlv_patch->patch_version));
BT_DBG("Reserved : 0x%x",
le16_to_cpu(tlv_patch->reserved2));
BT_DBG("Patch Entry Address : 0x%x",
le32_to_cpu(tlv_patch->entry));
break;
case TLV_TYPE_NVM:
tlv = (struct tlv_type_hdr *)fw_data;
type_len = le32_to_cpu(tlv->type_len);
length = (type_len >> 8) & 0x00ffffff;
BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
BT_DBG("Length\t\t : %d bytes", length);
idx = 0;
data = tlv->data;
while (idx < length) {
tlv_nvm = (struct tlv_type_nvm *)(data + idx);
tag_id = le16_to_cpu(tlv_nvm->tag_id);
tag_len = le16_to_cpu(tlv_nvm->tag_len);
/* Update NVM tags as needed */
switch (tag_id) {
case EDL_TAG_ID_HCI:
/* HCI transport layer parameters
* enabling software inband sleep
* onto controller side.
*/
tlv_nvm->data[0] |= 0x80;
/* UART Baud Rate */
if (soc_type >= QCA_WCN3991)
tlv_nvm->data[1] = nvm_baud_rate;
else
tlv_nvm->data[2] = nvm_baud_rate;
break;
case EDL_TAG_ID_DEEP_SLEEP:
/* Sleep enable mask
* enabling deep sleep feature on controller.
*/
tlv_nvm->data[0] |= 0x01;
break;
}
idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
}
break;
default:
BT_ERR("Unknown TLV type %d", config->type);
break;
}
}
static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
const u8 *data, enum qca_tlv_dnld_mode mode,
enum qca_btsoc_type soc_type)
{
struct sk_buff *skb;
struct edl_event_hdr *edl;
struct tlv_seg_resp *tlv_resp;
u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
int err = 0;
u8 event_type = HCI_EV_VENDOR;
u8 rlen = (sizeof(*edl) + sizeof(*tlv_resp));
u8 rtype = EDL_TVL_DNLD_RES_EVT;
cmd[0] = EDL_PATCH_TLV_REQ_CMD;
cmd[1] = seg_size;
memcpy(cmd + 2, data, seg_size);
if (mode == QCA_SKIP_EVT_VSE_CC || mode == QCA_SKIP_EVT_VSE)
return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
cmd);
/* Unlike other SoC's sending version command response as payload to
* VSE event. WCN3991 sends version command response as a payload to
* command complete event.
*/
if (soc_type >= QCA_WCN3991) {
event_type = 0;
rlen = sizeof(*edl);
rtype = EDL_PATCH_TLV_REQ_CMD;
}
skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
event_type, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
return err;
}
if (skb->len != rlen) {
bt_dev_err(hdev, "QCA TLV response size mismatch");
err = -EILSEQ;
goto out;
}
edl = (struct edl_event_hdr *)(skb->data);
if (!edl) {
bt_dev_err(hdev, "TLV with no header");
err = -EILSEQ;
goto out;
}
if (edl->cresp != EDL_CMD_REQ_RES_EVT || edl->rtype != rtype) {
bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
edl->cresp, edl->rtype);
err = -EIO;
}
if (soc_type >= QCA_WCN3991)
goto out;
tlv_resp = (struct tlv_seg_resp *)(edl->data);
if (tlv_resp->result) {
bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
edl->cresp, edl->rtype, tlv_resp->result);
}
out:
kfree_skb(skb);
return err;
}
static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
{
struct hci_event_hdr *hdr;
struct hci_ev_cmd_complete *evt;
struct sk_buff *skb;
skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
if (!skb)
return -ENOMEM;
hdr = skb_put(skb, sizeof(*hdr));
hdr->evt = HCI_EV_CMD_COMPLETE;
hdr->plen = sizeof(*evt) + 1;
evt = skb_put(skb, sizeof(*evt));
evt->ncmd = 1;
evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);
skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
return hci_recv_frame(hdev, skb);
}
static int qca_download_firmware(struct hci_dev *hdev,
struct qca_fw_config *config,
enum qca_btsoc_type soc_type,
u8 rom_ver)
{
const struct firmware *fw;
u8 *data;
const u8 *segment;
int ret, size, remain, i = 0;
bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
ret = request_firmware(&fw, config->fwname, &hdev->dev);
if (ret) {
/* For WCN6750, if mbn file is not present then check for
* tlv file.
*/
if (soc_type == QCA_WCN6750 && config->type == ELF_TYPE_PATCH) {
bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
config->fwname, ret);
config->type = TLV_TYPE_PATCH;
snprintf(config->fwname, sizeof(config->fwname),
"qca/msbtfw%02x.tlv", rom_ver);
bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
ret = request_firmware(&fw, config->fwname, &hdev->dev);
if (ret) {
bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
config->fwname, ret);
return ret;
}
} else {
bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
config->fwname, ret);
return ret;
}
}
size = fw->size;
data = vmalloc(fw->size);
if (!data) {
bt_dev_err(hdev, "QCA Failed to allocate memory for file: %s",
config->fwname);
release_firmware(fw);
return -ENOMEM;
}
memcpy(data, fw->data, size);
release_firmware(fw);
qca_tlv_check_data(hdev, config, data, soc_type);
segment = data;
remain = size;
while (remain > 0) {
int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
remain -= segsize;
/* The last segment is always acked regardless download mode */
if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
config->dnld_mode = QCA_SKIP_EVT_NONE;
ret = qca_tlv_send_segment(hdev, segsize, segment,
config->dnld_mode, soc_type);
if (ret)
goto out;
segment += segsize;
}
/* Latest qualcomm chipsets are not sending a command complete event
* for every fw packet sent. They only respond with a vendor specific
* event for the last packet. This optimization in the chip will
* decrease the BT in initialization time. Here we will inject a command
* complete event to avoid a command timeout error message.
*/
if (config->dnld_type == QCA_SKIP_EVT_VSE_CC ||
config->dnld_type == QCA_SKIP_EVT_VSE)
ret = qca_inject_cmd_complete_event(hdev);
out:
vfree(data);
return ret;
}
static int qca_disable_soc_logging(struct hci_dev *hdev)
{
struct sk_buff *skb;
u8 cmd[2];
int err;
cmd[0] = QCA_DISABLE_LOGGING_SUB_OP;
cmd[1] = 0x00;
skb = __hci_cmd_sync_ev(hdev, QCA_DISABLE_LOGGING, sizeof(cmd), cmd,
HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "QCA Failed to disable soc logging(%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
u8 cmd[9];
int err;
cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
cmd[1] = 0x02; /* TAG ID */
cmd[2] = sizeof(bdaddr_t); /* size */
memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
const char *firmware_name)
{
struct qca_fw_config config;
int err;
u8 rom_ver = 0;
u32 soc_ver;
bt_dev_dbg(hdev, "QCA setup on UART");
soc_ver = get_soc_ver(ver.soc_id, ver.rom_ver);
bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);
config.user_baud_rate = baudrate;
/* Firmware files to download are based on ROM version.
* ROM version is derived from last two bytes of soc_ver.
*/
rom_ver = ((soc_ver & 0x00000f00) >> 0x04) | (soc_ver & 0x0000000f);
if (soc_type == QCA_WCN6750)
qca_send_patch_config_cmd(hdev);
/* Download rampatch file */
config.type = TLV_TYPE_PATCH;
if (qca_is_wcn399x(soc_type)) {
snprintf(config.fwname, sizeof(config.fwname),
"qca/crbtfw%02x.tlv", rom_ver);
} else if (soc_type == QCA_QCA6390) {
snprintf(config.fwname, sizeof(config.fwname),
"qca/htbtfw%02x.tlv", rom_ver);
} else if (soc_type == QCA_WCN6750) {
/* Choose mbn file by default.If mbn file is not found
* then choose tlv file
*/
config.type = ELF_TYPE_PATCH;
snprintf(config.fwname, sizeof(config.fwname),
"qca/msbtfw%02x.mbn", rom_ver);
} else {
snprintf(config.fwname, sizeof(config.fwname),
"qca/rampatch_%08x.bin", soc_ver);
}
err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
if (err < 0) {
bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
return err;
}
/* Give the controller some time to get ready to receive the NVM */
msleep(10);
/* Download NVM configuration */
config.type = TLV_TYPE_NVM;
if (firmware_name)
snprintf(config.fwname, sizeof(config.fwname),
"qca/%s", firmware_name);
else if (qca_is_wcn399x(soc_type)) {
if (ver.soc_id == QCA_WCN3991_SOC_ID) {
snprintf(config.fwname, sizeof(config.fwname),
"qca/crnv%02xu.bin", rom_ver);
} else {
snprintf(config.fwname, sizeof(config.fwname),
"qca/crnv%02x.bin", rom_ver);
}
}
else if (soc_type == QCA_QCA6390)
snprintf(config.fwname, sizeof(config.fwname),
"qca/htnv%02x.bin", rom_ver);
else if (soc_type == QCA_WCN6750)
snprintf(config.fwname, sizeof(config.fwname),
"qca/msnv%02x.bin", rom_ver);
else
snprintf(config.fwname, sizeof(config.fwname),
"qca/nvm_%08x.bin", soc_ver);
err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
if (err < 0) {
bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
return err;
}
if (soc_type >= QCA_WCN3991) {
err = qca_disable_soc_logging(hdev);
if (err < 0)
return err;
}
/* WCN399x and WCN6750 supports the Microsoft vendor extension with 0xFD70 as the
* VsMsftOpCode.
*/
switch (soc_type) {
case QCA_WCN3990:
case QCA_WCN3991:
case QCA_WCN3998:
case QCA_WCN6750:
hci_set_msft_opcode(hdev, 0xFD70);
break;
default:
break;
}
/* Perform HCI reset */
err = qca_send_reset(hdev);
if (err < 0) {
bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
return err;
}
if (soc_type == QCA_WCN3991 || soc_type == QCA_WCN6750) {
/* get fw build info */
err = qca_read_fw_build_info(hdev);
if (err < 0)
return err;
}
bt_dev_info(hdev, "QCA setup on UART is completed");
return 0;
}
EXPORT_SYMBOL_GPL(qca_uart_setup);
int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
int err;
skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(qca_set_bdaddr);
MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
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