// 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"

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->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 *build_label;
        char cmd;
        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;
        }

        if (skb->len < sizeof(*edl)) {
                err = -EILSEQ;
                goto out;
        }

        edl = (struct edl_event_hdr *)(skb->data);

        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;
        }

        if (skb->len < sizeof(*edl) + 1) {
                err = -EILSEQ;
                goto out;
        }

        build_lbl_len = edl->data[0];

        if (skb->len < sizeof(*edl) + 1 + build_lbl_len) {
                err = -EILSEQ;
                goto out;
        }

        build_label = kstrndup(&edl->data[1], build_lbl_len, GFP_KERNEL);
        if (!build_label) {
                err = -ENOMEM;
                goto out;
        }

        hci_set_fw_info(hdev, "%s", build_label);

        kfree(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, 0, 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->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;
}

static int qca_read_fw_board_id(struct hci_dev *hdev, u16 *bid)
{
        u8 cmd;
        struct sk_buff *skb;
        struct edl_event_hdr *edl;
        int err = 0;

        cmd = EDL_GET_BID_REQ_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 board ID failed (%d)", err);
                return err;
        }

        edl = skb_pull_data(skb, sizeof(*edl));
        if (!edl) {
                bt_dev_err(hdev, "QCA read board ID with no header");
                err = -EILSEQ;
                goto out;
        }

        if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
            edl->rtype != EDL_GET_BID_REQ_CMD) {
                bt_dev_err(hdev, "QCA Wrong packet: %d %d", edl->cresp, edl->rtype);
                err = -EIO;
                goto out;
        }

        if (skb->len < 3) {
                err = -EILSEQ;
                goto out;
        }

        *bid = (edl->data[1] << 8) + edl->data[2];
        bt_dev_dbg(hdev, "%s: bid = %x", __func__, *bid);

out:
        kfree_skb(skb);
        return err;
}

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 bool qca_filename_has_extension(const char *filename)
{
        const char *suffix = strrchr(filename, '.');

        /* File extensions require a dot, but not as the first or last character */
        if (!suffix || suffix == filename || *(suffix + 1) == '\0')
                return 0;

        /* Avoid matching directories with names that look like files with extensions */
        return !strchr(suffix, '/');
}

static bool qca_get_alt_nvm_file(char *filename, size_t max_size)
{
        char fwname[64];
        const char *suffix;

        /* nvm file name has an extension, replace with .bin */
        if (qca_filename_has_extension(filename)) {
                suffix = strrchr(filename, '.');
                strscpy(fwname, filename, suffix - filename + 1);
                snprintf(fwname + (suffix - filename),
                       sizeof(fwname) - (suffix - filename), ".bin");
                /* If nvm file is already the default one, return false to skip the retry. */
                if (strcmp(fwname, filename) == 0)
                        return false;

                snprintf(filename, max_size, "%s", fwname);
                return true;
        }
        return false;
}

static int qca_tlv_check_data(struct hci_dev *hdev,
                               struct qca_fw_config *config,
                               u8 *fw_data, size_t fw_size,
                               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;
        u8 type;

        config->dnld_mode = QCA_SKIP_EVT_NONE;
        config->dnld_type = QCA_SKIP_EVT_NONE;

        switch (config->type) {
        case ELF_TYPE_PATCH:
                if (fw_size < 7)
                        return -EINVAL;

                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:
                if (fw_size < sizeof(struct tlv_type_hdr) + sizeof(struct tlv_type_patch))
                        return -EINVAL;

                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:
                if (fw_size < sizeof(struct tlv_type_hdr))
                        return -EINVAL;

                tlv = (struct tlv_type_hdr *)fw_data;

                type_len = le32_to_cpu(tlv->type_len);
                length = type_len >> 8;
                type = type_len & 0xff;

                /* Some NVM files have more than one set of tags, only parse
                 * the first set when it has type 2 for now. When there is
                 * more than one set there is an enclosing header of type 4.
                 */
                if (type == 4) {
                        if (fw_size < 2 * sizeof(struct tlv_type_hdr))
                                return -EINVAL;

                        tlv++;

                        type_len = le32_to_cpu(tlv->type_len);
                        length = type_len >> 8;
                        type = type_len & 0xff;
                }

                BT_DBG("TLV Type\t\t : 0x%x", type);
                BT_DBG("Length\t\t : %d bytes", length);

                if (type != 2)
                        break;

                if (fw_size < length + (tlv->data - fw_data))
                        return -EINVAL;

                idx = 0;
                data = tlv->data;
                while (idx < length - sizeof(struct tlv_type_nvm)) {
                        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);

                        if (length < idx + sizeof(struct tlv_type_nvm) + tag_len)
                                return -EINVAL;

                        /* Update NVM tags as needed */
                        switch (tag_id) {
                        case EDL_TAG_ID_BD_ADDR:
                                if (tag_len != sizeof(bdaddr_t))
                                        return -EINVAL;

                                memcpy(&config->bdaddr, tlv_nvm->data, sizeof(bdaddr_t));

                                break;

                        case EDL_TAG_ID_HCI:
                                if (tag_len < 3)
                                        return -EINVAL;

                                /* 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:
                                if (tag_len < 1)
                                        return -EINVAL;

                                /* Sleep enable mask
                                 * enabling deep sleep feature on controller.
                                 */
                                tlv_nvm->data[0] |= 0x01;

                                break;
                        }

                        idx += sizeof(struct tlv_type_nvm) + tag_len;
                }
                break;

        default:
                BT_ERR("Unknown TLV type %d", config->type);
                return -EINVAL;
        }

        return 0;
}

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->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) {
                /* If the board-specific file is missing, try loading the default
                 * one, unless that was attempted already.
                 */
                if (config->type == TLV_TYPE_NVM &&
                    qca_get_alt_nvm_file(config->fwname, sizeof(config->fwname))) {
                        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);

        ret = qca_tlv_check_data(hdev, config, data, size, soc_type);
        if (ret)
                goto out;

        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);

static int qca_check_bdaddr(struct hci_dev *hdev, const struct qca_fw_config *config)
{
        struct hci_rp_read_bd_addr *bda;
        struct sk_buff *skb;
        int err;

        if (bacmp(&hdev->public_addr, BDADDR_ANY))
                return 0;

        skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
                             HCI_INIT_TIMEOUT);
        if (IS_ERR(skb)) {
                err = PTR_ERR(skb);
                bt_dev_err(hdev, "Failed to read device address (%d)", err);
                return err;
        }

        if (skb->len != sizeof(*bda)) {
                bt_dev_err(hdev, "Device address length mismatch");
                kfree_skb(skb);
                return -EIO;
        }

        bda = (struct hci_rp_read_bd_addr *)skb->data;
        if (!bacmp(&bda->bdaddr, &config->bdaddr))
                hci_set_quirk(hdev, HCI_QUIRK_USE_BDADDR_PROPERTY);

        kfree_skb(skb);

        return 0;
}

static void qca_get_nvm_name_by_board(char *fwname, size_t max_size,
                const char *stem, enum qca_btsoc_type soc_type,
                struct qca_btsoc_version ver, u8 rom_ver, u16 bid)
{
        const char *variant;
        const char *prefix;

        /* Set the default value to variant and prefix */
        variant = "";
        prefix = "b";

        if (soc_type == QCA_QCA2066)
                prefix = "";

        if (soc_type == QCA_WCN6855 || soc_type == QCA_QCA2066) {
                /* If the chip is manufactured by GlobalFoundries */
                if ((le32_to_cpu(ver.soc_id) & QCA_HSP_GF_SOC_MASK) == QCA_HSP_GF_SOC_ID)
                        variant = "g";
        }

        if (rom_ver != 0) {
                if (bid == 0x0 || bid == 0xffff)
                        snprintf(fwname, max_size, "qca/%s%02x%s.bin", stem, rom_ver, variant);
                else
                        snprintf(fwname, max_size, "qca/%s%02x%s.%s%02x", stem, rom_ver,
                                                variant, prefix, bid);
        } else {
                if (bid == 0x0 || bid == 0xffff)
                        snprintf(fwname, max_size, "qca/%s%s.bin", stem, variant);
                else
                        snprintf(fwname, max_size, "qca/%s%s.%s%02x", stem, variant, prefix, bid);
        }
}

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, const char *rampatch_name)
{
        struct qca_fw_config config = {};
        const char *variant = "";
        int err;
        u8 rom_ver = 0;
        u32 soc_ver;
        u16 boardid = 0;

        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.
         */
        if (soc_type == QCA_WCN3988)
                rom_ver = ((soc_ver & 0x00000f00) >> 0x05) | (soc_ver & 0x0000000f);
        else if (soc_type == QCA_WCN3998)
                rom_ver = ((soc_ver & 0x0000f000) >> 0x07) | (soc_ver & 0x0000000f);
        else
                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 (rampatch_name) {
                snprintf(config.fwname, sizeof(config.fwname), "qca/%s", rampatch_name);
        } else {
                switch (soc_type) {
                case QCA_WCN3950:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/cmbtfw%02x.tlv", rom_ver);
                        break;
                case QCA_WCN3990:
                case QCA_WCN3991:
                case QCA_WCN3998:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/crbtfw%02x.tlv", rom_ver);
                        break;
                case QCA_WCN3988:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/apbtfw%02x.tlv", rom_ver);
                        break;
                case QCA_QCA2066:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/hpbtfw%02x.tlv", rom_ver);
                        break;
                case QCA_QCA6390:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/htbtfw%02x.tlv", rom_ver);
                        break;
                case 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);
                        break;
                case QCA_WCN6855:
                        /* Due to historical reasons, WCN685x chip has been using firmware
                         * without the "wcn" prefix. The mapping between the chip and its
                         * corresponding firmware has now been corrected.
                         */
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/wcnhpbtfw%02x.tlv", rom_ver);
                        break;
                case QCA_WCN7850:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/hmtbtfw%02x.tlv", rom_ver);
                        break;
                default:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/rampatch_%08x.bin", soc_ver);
                }
        }

        err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
        /* For WCN6750, if mbn file is not present then check for
         * tlv file.
         */
        if (err < 0 && soc_type == QCA_WCN6750) {
                bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
                           config.fwname, err);
                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);
                err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
        } else if (err < 0 && !rampatch_name && soc_type == QCA_WCN6855) {
                snprintf(config.fwname, sizeof(config.fwname),
                         "qca/hpbtfw%02x.tlv", rom_ver);
                err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
        }

        if (err < 0) {
                bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
                           config.fwname, err);
                return err;
        }

        /* Give the controller some time to get ready to receive the NVM */
        msleep(10);

        if (soc_type == QCA_QCA2066 || soc_type == QCA_WCN7850)
                qca_read_fw_board_id(hdev, &boardid);

        /* Download NVM configuration */
        config.type = TLV_TYPE_NVM;
        if (firmware_name) {
                /* The firmware name has an extension, use it directly */
                if (qca_filename_has_extension(firmware_name)) {
                        snprintf(config.fwname, sizeof(config.fwname), "qca/%s", firmware_name);
                } else {
                        qca_read_fw_board_id(hdev, &boardid);
                        qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
                                 firmware_name, soc_type, ver, 0, boardid);
                }
        } else {
                switch (soc_type) {
                case QCA_WCN3950:
                        if (le32_to_cpu(ver.soc_id) == QCA_WCN3950_SOC_ID_T)
                                variant = "t";
                        else if (le32_to_cpu(ver.soc_id) == QCA_WCN3950_SOC_ID_S)
                                variant = "s";

                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/cmnv%02x%s.bin", rom_ver, variant);
                        break;
                case QCA_WCN3990:
                case QCA_WCN3991:
                case QCA_WCN3998:
                        if (le32_to_cpu(ver.soc_id) == QCA_WCN3991_SOC_ID)
                                variant = "u";

                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/crnv%02x%s.bin", rom_ver, variant);
                        break;
                case QCA_WCN3988:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/apnv%02x.bin", rom_ver);
                        break;
                case QCA_QCA2066:
                        qca_get_nvm_name_by_board(config.fwname,
                                sizeof(config.fwname), "hpnv", soc_type, ver,
                                rom_ver, boardid);
                        break;
                case QCA_QCA6390:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/htnv%02x.bin", rom_ver);
                        break;
                case QCA_WCN6750:
                        snprintf(config.fwname, sizeof(config.fwname),
                                 "qca/msnv%02x.bin", rom_ver);
                        break;
                case QCA_WCN6855:
                        qca_read_fw_board_id(hdev, &boardid);
                        qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
                                                  "wcnhpnv", soc_type, ver, rom_ver, boardid);
                        break;
                case QCA_WCN7850:
                        qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
                                 "hmtnv", soc_type, ver, rom_ver, boardid);
                        break;
                default:
                        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 && !firmware_name && soc_type == QCA_WCN6855) {
                qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
                                          "hpnv", soc_type, ver, rom_ver, boardid);
                err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
        }

        if (err < 0) {
                bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
                           config.fwname, err);
                return err;
        }

        switch (soc_type) {
        case QCA_WCN3991:
        case QCA_QCA2066:
        case QCA_QCA6390:
        case QCA_WCN6750:
        case QCA_WCN6855:
        case QCA_WCN7850:
                err = qca_disable_soc_logging(hdev);
                if (err < 0)
                        return err;
                break;
        default:
                break;
        }

        /* WCN399x and WCN6750 supports the Microsoft vendor extension with 0xFD70 as the
         * VsMsftOpCode.
         */
        switch (soc_type) {
        case QCA_WCN3950:
        case QCA_WCN3988:
        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;
        }

        switch (soc_type) {
        case QCA_WCN3991:
        case QCA_WCN6750:
        case QCA_WCN6855:
        case QCA_WCN7850:
                /* get fw build info */
                err = qca_read_fw_build_info(hdev);
                if (err < 0)
                        return err;
                break;
        default:
                break;
        }

        err = qca_check_bdaddr(hdev, &config);
        if (err)
                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)
{
        bdaddr_t bdaddr_swapped;
        struct sk_buff *skb;
        int err;

        baswap(&bdaddr_swapped, bdaddr);

        skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6,
                                &bdaddr_swapped, 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");
MODULE_LICENSE("GPL");