* [PATCH v5 2/2] Bluetooth: btintel: Add *setup* function for new generation Intel controllers
2020-10-03 8:02 [PATCH v5 1/2] Bluetooth: btusb: use usb vid/pid for initializing hal callbacks Kiran K
@ 2020-10-03 8:02 ` Kiran K
2020-10-03 8:27 ` [PATCH v5 1/2] Bluetooth: btusb: use usb vid/pid for initializing hal callbacks Marcel Holtmann
1 sibling, 0 replies; 4+ messages in thread
From: Kiran K @ 2020-10-03 8:02 UTC (permalink / raw)
To: linux-bluetooth
Cc: sathish.narasimman, chethan.tumkur.narayan, ravishankar.srivatsa,
kiraank, Kiran K, Amit K Bag, Raghuram Hegde
1) add a helper function to download firmware
2) add a function to construct firmware / ddc file name
3) define *setup* and hook it up for new genertion Intel controllers
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Amit K Bag <amit.k.bag@intel.com>
Signed-off-by: Raghuram Hegde <raghuram.hegde@intel.com>
Reviewed-by: Sathish Narasimman <Sathish.Narasimman@intel.com>
Reviewed-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@intel.com>
---
Changes in v5:
* Remove BTUSB_INTEL_NEWGEN and use usb vid/pid combination to
identify controller type
Changes in v4:
* Rebase patchset
* Fix indentation issues
* make btusb_setup_intel_new_get_fw_name to return void as return value is
not getting used
Changes in v3:
* Combine the two patches in v2 series to one to avoid compiler warnings
reported by kernel bot (lkp)
Changed in v2:
* Fix typo in commit message
drivers/bluetooth/btintel.h | 6 +
drivers/bluetooth/btusb.c | 318 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 324 insertions(+)
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index 09346ae..c4e28a8 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 e2cd78d..635229c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2359,6 +2359,181 @@ static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
return true;
}
+static void 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);
+}
+
+static 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);
+ }
+
+ btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi");
+ 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,
@@ -2693,6 +2868,135 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
return 0;
}
+static int btusb_setup_intel_newgen(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ u32 boot_param;
+ char ddcname[64];
+ ktime_t calltime, delta, rettime;
+ unsigned long long duration;
+ int err;
+ struct intel_debug_features features;
+ struct intel_version_tlv version;
+
+ BT_DBG("%s", hdev->name);
+
+ /* Set the default boot parameter to 0x0 and it is updated to
+ * SKU specific boot parameter after reading Intel_Write_Boot_Params
+ * command while downloading the firmware.
+ */
+ boot_param = 0x00000000;
+
+ calltime = ktime_get();
+
+ /* Read the Intel version information to determine if the device
+ * is in bootloader mode or if it already has operational firmware
+ * loaded.
+ */
+ err = btintel_read_version_tlv(hdev, &version);
+ if (err) {
+ bt_dev_err(hdev, "Intel Read version failed (%d)", err);
+ btintel_reset_to_bootloader(hdev);
+ return err;
+ }
+
+ btintel_version_info_tlv(hdev, &version);
+
+ err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param);
+ if (err)
+ return err;
+
+ /* check if controller is already having an operational firmware */
+ if (version.img_type == 0x03)
+ goto finish;
+
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long)ktime_to_ns(delta) >> 10;
+
+ bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
+
+ calltime = ktime_get();
+
+ set_bit(BTUSB_BOOTING, &data->flags);
+
+ err = btintel_send_intel_reset(hdev, boot_param);
+ if (err) {
+ bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
+ btintel_reset_to_bootloader(hdev);
+ return err;
+ }
+
+ /* The bootloader will not indicate when the device is ready. This
+ * is done by the operational firmware sending bootup notification.
+ *
+ * Booting into operational firmware should not take longer than
+ * 1 second. However if that happens, then just fail the setup
+ * since something went wrong.
+ */
+ bt_dev_info(hdev, "Waiting for device to boot");
+
+ err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(1000));
+
+ if (err == -EINTR) {
+ bt_dev_err(hdev, "Device boot interrupted");
+ return -EINTR;
+ }
+
+ if (err) {
+ bt_dev_err(hdev, "Device boot timeout");
+ btintel_reset_to_bootloader(hdev);
+ return -ETIMEDOUT;
+ }
+
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long)ktime_to_ns(delta) >> 10;
+
+ bt_dev_info(hdev, "Device booted in %llu usecs", duration);
+
+ clear_bit(BTUSB_BOOTLOADER, &data->flags);
+
+ btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname),
+ "ddc");
+
+ /* Once the device is running in operational mode, it needs to
+ * apply the device configuration (DDC) parameters.
+ *
+ * The device can work without DDC parameters, so even if it
+ * fails to load the file, no need to fail the setup.
+ */
+ btintel_load_ddc_config(hdev, ddcname);
+
+ /* Read the Intel supported features and if new exception formats
+ * supported, need to load the additional DDC config to enable.
+ */
+ btintel_read_debug_features(hdev, &features);
+
+ /* Set DDC mask for available debug features */
+ btintel_set_debug_features(hdev, &features);
+
+ /* Read the Intel version information after loading the FW */
+ err = btintel_read_version_tlv(hdev, &version);
+ if (err)
+ return err;
+
+ btintel_version_info_tlv(hdev, &version);
+
+finish:
+ /* Set the event mask for Intel specific vendor events. This enables
+ * a few extra events that are useful during general operation. It
+ * does not enable any debugging related events.
+ *
+ * The device will function correctly without these events enabled
+ * and thus no need to fail the setup.
+ */
+ btintel_set_event_mask(hdev, false);
+
+ return 0;
+}
static int btusb_shutdown_intel(struct hci_dev *hdev)
{
struct sk_buff *skb;
@@ -3977,6 +4281,7 @@ static int btusb_probe(struct usb_interface *intf,
case 0x0025:
case 0x0026:
case 0x0029:
+ case 0x0032:
case 0x0a2b:
case 0x0aaa:
data->recv_event = btusb_recv_event_intel;
@@ -4092,6 +4397,19 @@ static int btusb_probe(struct usb_interface *intf,
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
break;
+ case 0x0032:
+ hdev->manufacturer = 2;
+ hdev->send = btusb_send_frame_intel;
+ hdev->setup = btusb_setup_intel_newgen;
+ hdev->shutdown = btusb_shutdown_intel_new;
+ hdev->hw_error = btintel_hw_error;
+ hdev->set_diag = btintel_set_diag;
+ hdev->set_bdaddr = btintel_set_bdaddr;
+ hdev->cmd_timeout = btusb_intel_cmd_timeout;
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+ set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
+ set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
+ break;
}
}
--
2.7.4
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