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-rw-r--r--drivers/bluetooth/btmtk.c424
1 files changed, 424 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
new file mode 100644
index 0000000000..aaabb73208
--- /dev/null
+++ b/drivers/bluetooth/btmtk.c
@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2021 MediaTek Inc.
+ *
+ */
+#include <linux/module.h>
+#include <linux/firmware.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btmtk.h"
+
+#define VERSION "0.1"
+
+/* It is for mt79xx download rom patch*/
+#define MTK_FW_ROM_PATCH_HEADER_SIZE 32
+#define MTK_FW_ROM_PATCH_GD_SIZE 64
+#define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64
+#define MTK_SEC_MAP_COMMON_SIZE 12
+#define MTK_SEC_MAP_NEED_SEND_SIZE 52
+
+struct btmtk_patch_header {
+ u8 datetime[16];
+ u8 platform[4];
+ __le16 hwver;
+ __le16 swver;
+ __le32 magicnum;
+} __packed;
+
+struct btmtk_global_desc {
+ __le32 patch_ver;
+ __le32 sub_sys;
+ __le32 feature_opt;
+ __le32 section_num;
+} __packed;
+
+struct btmtk_section_map {
+ __le32 sectype;
+ __le32 secoffset;
+ __le32 secsize;
+ union {
+ __le32 u4SecSpec[13];
+ struct {
+ __le32 dlAddr;
+ __le32 dlsize;
+ __le32 seckeyidx;
+ __le32 alignlen;
+ __le32 sectype;
+ __le32 dlmodecrctype;
+ __le32 crc;
+ __le32 reserved[6];
+ } bin_info_spec;
+ };
+} __packed;
+
+static void btmtk_coredump(struct hci_dev *hdev)
+{
+ int err;
+
+ err = __hci_cmd_send(hdev, 0xfd5b, 0, NULL);
+ if (err < 0)
+ bt_dev_err(hdev, "Coredump failed (%d)", err);
+}
+
+static void btmtk_coredump_hdr(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+ char buf[80];
+
+ snprintf(buf, sizeof(buf), "Controller Name: 0x%X\n",
+ data->dev_id);
+ skb_put_data(skb, buf, strlen(buf));
+
+ snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n",
+ data->cd_info.fw_version);
+ skb_put_data(skb, buf, strlen(buf));
+
+ snprintf(buf, sizeof(buf), "Driver: %s\n",
+ data->cd_info.driver_name);
+ skb_put_data(skb, buf, strlen(buf));
+
+ snprintf(buf, sizeof(buf), "Vendor: MediaTek\n");
+ skb_put_data(skb, buf, strlen(buf));
+}
+
+static void btmtk_coredump_notify(struct hci_dev *hdev, int state)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+
+ switch (state) {
+ case HCI_DEVCOREDUMP_IDLE:
+ data->cd_info.state = HCI_DEVCOREDUMP_IDLE;
+ break;
+ case HCI_DEVCOREDUMP_ACTIVE:
+ data->cd_info.state = HCI_DEVCOREDUMP_ACTIVE;
+ break;
+ case HCI_DEVCOREDUMP_TIMEOUT:
+ case HCI_DEVCOREDUMP_ABORT:
+ case HCI_DEVCOREDUMP_DONE:
+ data->cd_info.state = HCI_DEVCOREDUMP_IDLE;
+ btmtk_reset_sync(hdev);
+ break;
+ }
+}
+
+int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
+ wmt_cmd_sync_func_t wmt_cmd_sync)
+{
+ struct btmtk_hci_wmt_params wmt_params;
+ struct btmtk_patch_header *hdr;
+ struct btmtk_global_desc *globaldesc = NULL;
+ struct btmtk_section_map *sectionmap;
+ const struct firmware *fw;
+ const u8 *fw_ptr;
+ const u8 *fw_bin_ptr;
+ int err, dlen, i, status;
+ u8 flag, first_block, retry;
+ u32 section_num, dl_size, section_offset;
+ u8 cmd[64];
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
+ return err;
+ }
+
+ fw_ptr = fw->data;
+ fw_bin_ptr = fw_ptr;
+ hdr = (struct btmtk_patch_header *)fw_ptr;
+ globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE);
+ section_num = le32_to_cpu(globaldesc->section_num);
+
+ bt_dev_info(hdev, "HW/SW Version: 0x%04x%04x, Build Time: %s",
+ le16_to_cpu(hdr->hwver), le16_to_cpu(hdr->swver), hdr->datetime);
+
+ for (i = 0; i < section_num; i++) {
+ first_block = 1;
+ fw_ptr = fw_bin_ptr;
+ sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
+ MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i);
+
+ section_offset = le32_to_cpu(sectionmap->secoffset);
+ dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize);
+
+ if (dl_size > 0) {
+ retry = 20;
+ while (retry > 0) {
+ cmd[0] = 0; /* 0 means legacy dl mode. */
+ memcpy(cmd + 1,
+ fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
+ MTK_FW_ROM_PATCH_GD_SIZE +
+ MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i +
+ MTK_SEC_MAP_COMMON_SIZE,
+ MTK_SEC_MAP_NEED_SEND_SIZE + 1);
+
+ wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
+ wmt_params.status = &status;
+ wmt_params.flag = 0;
+ wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1;
+ wmt_params.data = &cmd;
+
+ err = wmt_cmd_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
+ err);
+ goto err_release_fw;
+ }
+
+ if (status == BTMTK_WMT_PATCH_UNDONE) {
+ break;
+ } else if (status == BTMTK_WMT_PATCH_PROGRESS) {
+ msleep(100);
+ retry--;
+ } else if (status == BTMTK_WMT_PATCH_DONE) {
+ goto next_section;
+ } else {
+ bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)",
+ status);
+ err = -EIO;
+ goto err_release_fw;
+ }
+ }
+
+ fw_ptr += section_offset;
+ wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
+ wmt_params.status = NULL;
+
+ while (dl_size > 0) {
+ dlen = min_t(int, 250, dl_size);
+ if (first_block == 1) {
+ flag = 1;
+ first_block = 0;
+ } else if (dl_size - dlen <= 0) {
+ flag = 3;
+ } else {
+ flag = 2;
+ }
+
+ wmt_params.flag = flag;
+ wmt_params.dlen = dlen;
+ wmt_params.data = fw_ptr;
+
+ err = wmt_cmd_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
+ err);
+ goto err_release_fw;
+ }
+
+ dl_size -= dlen;
+ fw_ptr += dlen;
+ }
+ }
+next_section:
+ continue;
+ }
+ /* Wait a few moments for firmware activation done */
+ usleep_range(100000, 120000);
+
+err_release_fw:
+ release_firmware(fw);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btmtk_setup_firmware_79xx);
+
+int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname,
+ wmt_cmd_sync_func_t wmt_cmd_sync)
+{
+ struct btmtk_hci_wmt_params wmt_params;
+ const struct firmware *fw;
+ const u8 *fw_ptr;
+ size_t fw_size;
+ int err, dlen;
+ u8 flag, param;
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
+ return err;
+ }
+
+ /* Power on data RAM the firmware relies on. */
+ param = 1;
+ wmt_params.op = BTMTK_WMT_FUNC_CTRL;
+ wmt_params.flag = 3;
+ wmt_params.dlen = sizeof(param);
+ wmt_params.data = &param;
+ wmt_params.status = NULL;
+
+ err = wmt_cmd_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
+ goto err_release_fw;
+ }
+
+ fw_ptr = fw->data;
+ fw_size = fw->size;
+
+ /* The size of patch header is 30 bytes, should be skip */
+ if (fw_size < 30) {
+ err = -EINVAL;
+ goto err_release_fw;
+ }
+
+ fw_size -= 30;
+ fw_ptr += 30;
+ flag = 1;
+
+ wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
+ wmt_params.status = NULL;
+
+ while (fw_size > 0) {
+ dlen = min_t(int, 250, fw_size);
+
+ /* Tell device the position in sequence */
+ if (fw_size - dlen <= 0)
+ flag = 3;
+ else if (fw_size < fw->size - 30)
+ flag = 2;
+
+ wmt_params.flag = flag;
+ wmt_params.dlen = dlen;
+ wmt_params.data = fw_ptr;
+
+ err = wmt_cmd_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
+ err);
+ goto err_release_fw;
+ }
+
+ fw_size -= dlen;
+ fw_ptr += dlen;
+ }
+
+ wmt_params.op = BTMTK_WMT_RST;
+ wmt_params.flag = 4;
+ wmt_params.dlen = 0;
+ wmt_params.data = NULL;
+ wmt_params.status = NULL;
+
+ /* Activate funciton the firmware providing to */
+ err = wmt_cmd_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
+ goto err_release_fw;
+ }
+
+ /* Wait a few moments for firmware activation done */
+ usleep_range(10000, 12000);
+
+err_release_fw:
+ release_firmware(fw);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btmtk_setup_firmware);
+
+int btmtk_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ long ret;
+
+ skb = __hci_cmd_sync(hdev, 0xfc1a, 6, bdaddr, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ ret = PTR_ERR(skb);
+ bt_dev_err(hdev, "changing Mediatek device address failed (%ld)",
+ ret);
+ return ret;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btmtk_set_bdaddr);
+
+void btmtk_reset_sync(struct hci_dev *hdev)
+{
+ struct btmediatek_data *reset_work = hci_get_priv(hdev);
+ int err;
+
+ hci_dev_lock(hdev);
+
+ err = hci_cmd_sync_queue(hdev, reset_work->reset_sync, NULL, NULL);
+ if (err)
+ bt_dev_err(hdev, "failed to reset (%d)", err);
+
+ hci_dev_unlock(hdev);
+}
+EXPORT_SYMBOL_GPL(btmtk_reset_sync);
+
+int btmtk_register_coredump(struct hci_dev *hdev, const char *name,
+ u32 fw_version)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+
+ if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
+ return -EOPNOTSUPP;
+
+ data->cd_info.fw_version = fw_version;
+ data->cd_info.state = HCI_DEVCOREDUMP_IDLE;
+ data->cd_info.driver_name = name;
+
+ return hci_devcd_register(hdev, btmtk_coredump, btmtk_coredump_hdr,
+ btmtk_coredump_notify);
+}
+EXPORT_SYMBOL_GPL(btmtk_register_coredump);
+
+int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+ int err;
+
+ if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
+ return 0;
+
+ switch (data->cd_info.state) {
+ case HCI_DEVCOREDUMP_IDLE:
+ err = hci_devcd_init(hdev, MTK_COREDUMP_SIZE);
+ if (err < 0)
+ break;
+ data->cd_info.cnt = 0;
+
+ /* It is supposed coredump can be done within 5 seconds */
+ schedule_delayed_work(&hdev->dump.dump_timeout,
+ msecs_to_jiffies(5000));
+ fallthrough;
+ case HCI_DEVCOREDUMP_ACTIVE:
+ default:
+ err = hci_devcd_append(hdev, skb);
+ if (err < 0)
+ break;
+ data->cd_info.cnt++;
+
+ /* Mediatek coredump data would be more than MTK_COREDUMP_NUM */
+ if (data->cd_info.cnt > MTK_COREDUMP_NUM &&
+ skb->len > MTK_COREDUMP_END_LEN)
+ if (!memcmp((char *)&skb->data[skb->len - MTK_COREDUMP_END_LEN],
+ MTK_COREDUMP_END, MTK_COREDUMP_END_LEN - 1)) {
+ bt_dev_info(hdev, "Mediatek coredump end");
+ hci_devcd_complete(hdev);
+ }
+
+ break;
+ }
+
+ if (err < 0)
+ kfree_skb(skb);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btmtk_process_coredump);
+
+MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
+MODULE_AUTHOR("Mark Chen <mark-yw.chen@mediatek.com>");
+MODULE_DESCRIPTION("Bluetooth support for MediaTek devices ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(FIRMWARE_MT7622);
+MODULE_FIRMWARE(FIRMWARE_MT7663);
+MODULE_FIRMWARE(FIRMWARE_MT7668);
+MODULE_FIRMWARE(FIRMWARE_MT7961);
+MODULE_FIRMWARE(FIRMWARE_MT7925);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 11:47:50 +0000