1) add a helper function to download firmware for new generation
Intel controllers
2) add a function to construct firmware / ddc file name for new
generation Intel controllers
Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
Signed-off-by: Amit K Bag <amit.k.bag@xxxxxxxxx>
Signed-off-by: Raghuram Hegde <raghuram.hegde@xxxxxxxxx>
Reviewed-by: Sathish Narasimman <Sathish.Narasimman@xxxxxxxxx>
Reviewed-by: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>
Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@xxxxxxxxx>
---
Changes in v2:
- Fix typo in commit message
drivers/bluetooth/btintel.h | 6 ++
drivers/bluetooth/btusb.c | 183 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 189 insertions(+)
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index 09346ae..f5c26dc 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -132,6 +132,12 @@ struct intel_debug_features {
__u8 page1[16];
} __packed;
+#define INTEL_HW_PLATFORM(cnvx_bt) ((u8)(((cnvx_bt) & 0x0000ff00) >> 8))
+#define INTEL_HW_VARIANT(cnvx_bt) ((u8)(((cnvx_bt) & 0x003f0000) >> 16))
+#define INTEL_CNVX_TOP_TYPE(cnvx_top) ((cnvx_top) & 0x00000fff)
+#define INTEL_CNVX_TOP_STEP(cnvx_top) (((cnvx_top) & 0x0f000000) >> 24)
+#define INTEL_CNVX_TOP_PACK_SWAB(t, s) __swab16(((__u16)(((t) << 4) | (s))))
+
#if IS_ENABLED(CONFIG_BT_INTEL)
int btintel_check_bdaddr(struct hci_dev *hdev);
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 9f294b9..ab3d890 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2354,6 +2354,189 @@ static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
return true;
}
+static bool btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv,
+ char *fw_name, size_t len,
+ const char *suffix)
+{
+ /*
+ * The firmware file name for new generation controllers will be
+ * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step>
+ */
+ snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s",
+ INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top),
+ INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)),
+ INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top),
+ INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)),
+ suffix);
+ return true;
+}
+
+int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
+ struct intel_version_tlv *ver,
+ u32 *boot_param)
+{
+ const struct firmware *fw;
+ char fwname[64];
+ int err;
+ struct btusb_data *data = hci_get_drvdata(hdev);
+
+ if (!ver || !boot_param)
+ return -EINVAL;
+
+ /* The hardware platform number has a fixed value of 0x37 and
+ * for now only accept this single value.
+ */
+ if (INTEL_HW_PLATFORM(ver->cnvi_bt) != 0x37) {
+ bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)",
+ INTEL_HW_PLATFORM(ver->cnvi_bt));
+ return -EINVAL;
+ }
+
+ /* The firmware variant determines if the device is in bootloader
+ * mode or is running operational firmware. The value 0x03 identifies
+ * the bootloader and the value 0x23 identifies the operational
+ * firmware.
+ *
+ * When the operational firmware is already present, then only
+ * the check for valid Bluetooth device address is needed. This
+ * determines if the device will be added as configured or
+ * unconfigured controller.
+ *
+ * It is not possible to use the Secure Boot Parameters in this
+ * case since that command is only available in bootloader mode.
+ */
+ if (ver->img_type == 0x03) {
+ clear_bit(BTUSB_BOOTLOADER, &data->flags);
+ btintel_check_bdaddr(hdev);
+ return 0;
+ }
+
+ /* Check for supported iBT hardware variants of this firmware
+ * loading method.
+ *
+ * This check has been put in place to ensure correct forward
+ * compatibility options when newer hardware variants come along.
+ */
+ switch (INTEL_HW_VARIANT(ver->cnvi_bt)) {
+ case 0x17: /* TyP */
+ case 0x18: /* Slr */
+ case 0x19: /* Slr-F */
+ break;
+ default:
+ bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)",
+ INTEL_HW_VARIANT(ver->cnvi_bt));
+ return -EINVAL;
+ }
+
+ /* If the device is not in bootloader mode, then the only possible
+ * choice is to return an error and abort the device initialization.
+ */
+ if (ver->img_type != 0x01) {
+ bt_dev_err(hdev, "Unsupported Intel firmware variant (0x%x)",
+ ver->img_type);
+ return -ENODEV;
+ }
+
+ /* It is required that every single firmware fragment is acknowledged
+ * with a command complete event. If the boot parameters indicate
+ * that this bootloader does not send them, then abort the setup.
+ */
+ if (ver->limited_cce != 0x00) {
+ bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)",
+ ver->limited_cce);
+ return -EINVAL;
+ }
+
+ /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */
+ if (ver->sbe_type > 0x01) {
+ bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)",
+ ver->sbe_type);
+ return -EINVAL;
+ }
+
+ /* If the OTP has no valid Bluetooth device address, then there will
+ * also be no valid address for the operational firmware.
+ */
+ if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) {
+ bt_dev_info(hdev, "No device address configured");
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ }
+
+ err = btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname),
+ "sfi");
+ if (!err) {
+ bt_dev_err(hdev, "Unsupported Intel firmware naming");
+ return -EINVAL;
+ }
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
+ return err;
+ }
+
+ bt_dev_info(hdev, "Found device firmware: %s", fwname);
+
+ if (fw->size < 644) {
+ bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
+ fw->size);
+ err = -EBADF;
+ goto done;
+ }
+
+ set_bit(BTUSB_DOWNLOADING, &data->flags);
+
+ /* Start firmware downloading and get boot parameter */
+ err = btintel_download_firmware_newgen(hdev, fw, boot_param,
+ INTEL_HW_VARIANT(ver->cnvi_bt),
+ ver->sbe_type);
+ if (err < 0) {
+ /* When FW download fails, send Intel Reset to retry
+ * FW download.
+ */
+ btintel_reset_to_bootloader(hdev);
+ goto done;
+ }
+ set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
+
+ bt_dev_info(hdev, "Waiting for firmware download to complete");
+
+ /* Before switching the device into operational mode and with that
+ * booting the loaded firmware, wait for the bootloader notification
+ * that all fragments have been successfully received.
+ *
+ * When the event processing receives the notification, then the
+ * BTUSB_DOWNLOADING flag will be cleared.
+ *
+ * The firmware loading should not take longer than 5 seconds
+ * and thus just timeout if that happens and fail the setup
+ * of this device.
+ */
+ err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(5000));
+ if (err == -EINTR) {
+ bt_dev_err(hdev, "Firmware loading interrupted");
+ goto done;
+ }
+
+ if (err) {
+ bt_dev_err(hdev, "Firmware loading timeout");
+ err = -ETIMEDOUT;
+ btintel_reset_to_bootloader(hdev);
+ goto done;
+ }
+
+ if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
+ bt_dev_err(hdev, "Firmware loading failed");
+ err = -ENOEXEC;
+ goto done;
+ }
+
+done:
+ release_firmware(fw);
+ return err;
+}
static int btusb_intel_download_firmware(struct hci_dev *hdev,
struct intel_version *ver,
struct intel_boot_params *params,
--
2.7.4
