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path: root/drivers/bluetooth/btintel_pcie.h
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10 daysBluetooth: btintel_pcie: Support Function level resetChandrashekar Devegowda
The driver supports Function Level Reset (FLR) to recover the controller upon hardware exceptions or hci command timeouts. FLR is triggered only when no prior reset has occurred within the retry window, with a maximum of one FLR allowed within this window. This patch is tested by, echo 1 > /sys/class/bluetooth/hciX/reset Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-06-05Bluetooth: btintel_pcie: Increase the tx and rx descriptor countChandrashekar Devegowda
This change addresses latency issues observed in HID use cases where events arrive in bursts. By increasing the Rx descriptor count to 64, the firmware can handle bursty data more effectively, reducing latency and preventing buffer overflows. Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Fixes: c2b636b3f788 ("Bluetooth: btintel_pcie: Add support for PCIe transport") Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-06-05Bluetooth: btintel_pcie: Fix driver not posting maximum rx buffersKiran K
The driver was posting only 6 rx buffers, despite the maximum rx buffers being defined as 16. Having fewer RX buffers caused firmware exceptions in HID use cases when events arrived in bursts. Exception seen on android 6.12 kernel. E Bluetooth: hci0: Received hw exception interrupt E Bluetooth: hci0: Received gp1 mailbox interrupt D Bluetooth: hci0: 00000000: ff 3e 87 80 03 01 01 01 03 01 0c 0d 02 1c 10 0e D Bluetooth: hci0: 00000010: 01 00 05 14 66 b0 28 b0 c0 b0 28 b0 ac af 28 b0 D Bluetooth: hci0: 00000020: 14 f1 28 b0 00 00 00 00 fa 04 00 00 00 00 40 10 D Bluetooth: hci0: 00000030: 08 00 00 00 7a 7a 7a 7a 47 00 fb a0 10 00 00 00 D Bluetooth: hci0: 00000000: 10 01 0a E Bluetooth: hci0: ---- Dump of debug registers — E Bluetooth: hci0: boot stage: 0xe0fb0047 E Bluetooth: hci0: ipc status: 0x00000004 E Bluetooth: hci0: ipc control: 0x00000000 E Bluetooth: hci0: ipc sleep control: 0x00000000 E Bluetooth: hci0: mbox_1: 0x00badbad E Bluetooth: hci0: mbox_2: 0x0000101c E Bluetooth: hci0: mbox_3: 0x00000008 E Bluetooth: hci0: mbox_4: 0x7a7a7a7a Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Fixes: c2b636b3f788 ("Bluetooth: btintel_pcie: Add support for PCIe transport") Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-05-21Bluetooth: btintel_pcie: Dump debug registers on errorChandrashekar Devegowda
Dumping debug registers on GP1 MSIx and error conditions, such as TX completion timeout, aiding in understanding the controller's state during errors. The register dump includes: - Boot stage - IPC control - IPC status - Mailbox registers HCI traces: = Vendor Diagnostic (len 199) 2d 2d 2d 2d 20 44 75 6d 70 20 6f 66 20 64 65 62 ---- Dump of deb 75 67 20 72 65 67 69 73 74 65 72 73 20 2d 2d 2d ug registers --- 62 6f 6f 74 20 73 74 61 67 65 3a 20 30 78 61 30 boot stage: 0xa0 66 61 30 30 34 37 69 70 63 20 73 74 61 74 75 73 fa0047ipc status 3a 20 30 78 30 30 30 30 30 30 30 34 69 70 63 20 : 0x00000004ipc 63 6f 6e 74 72 6f 6c 3a 20 30 78 30 30 30 30 30 control: 0x00000 30 30 30 69 70 63 20 73 6c 65 65 70 20 63 6f 6e 000ipc sleep con 74 72 6f 6c 3a 20 30 78 30 30 30 30 30 30 30 30 trol: 0x00000000 6d 62 6f 78 20 73 74 61 74 75 73 3a 20 30 78 30 mbox status: 0x0 30 30 30 30 30 30 30 72 78 71 3a 20 63 72 5f 74 0000000rxq: cr_t 69 61 3a 20 37 20 63 72 5f 68 69 61 3a 20 37 74 ia: 7 cr_hia: 7t 78 71 3a 20 63 72 5f 74 69 61 3a 20 36 20 63 72 xq: cr_tia: 6 cr 5f 68 69 61 3a 20 36 _hia: 6 Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-03-25Bluetooth: btintel_pcie: Add support for device coredumpKiran K
1. Driver registers device coredump callback 2. Dumps firmware traces as part of coredump Co-developed-by: Vijay Satija <vijay.satija@intel.com> Signed-off-by: Vijay Satija <vijay.satija@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-03-25Bluetooth: btintel_pcie: Read hardware exception dataKiran K
On hardware error, controller writes hardware error event and optional vendor specific hci events in device memory in TLV format and raises MSIX interrupt. Driver reads the device memory and passes the events to the stack for further processing. Co-developed-by: Vijay Satija <vijay.satija@intel.com> Signed-off-by: Vijay Satija <vijay.satija@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-03-25Bluetooth: btintel_pcie: Setup buffers for firmware tracesKiran K
This patch allocates the host memory which is used by controller to dump the firmware traces. The memory needs to be shared with controller via context information. Co-developed-by: Vijay Satija <vijay.satija@intel.com> Signed-off-by: Vijay Satija <vijay.satija@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2024-11-14Bluetooth: btintel_pcie: Add recovery mechanismKiran K
This patch adds a recovery mechanism to recover controller if firmware download fails due to unresponsive controller, command timeout, firmware signature verification failure etc. Driver attmepts maximum of 5 times before giving up. Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2024-11-14Bluetooth: btintel_pcie: Add handshake between driver and firmwareKiran K
The following handshake mechanism needs be followed after firmware download is completed to bring the firmware to running state. After firmware fragments of Operational image are downloaded and secure sends result of the image succeeds, 1. Driver sends HCI Intel reset with boot option #1 to switch FW image. 2. FW sends Alive GP[0] MSIx 3. Driver enables data path (doorbell 0x460 for RBDs, etc...) 4. Driver gets Bootup event from firmware 5. Driver performs D0 entry to device (WRITE to IPC_Sleep_Control =0x0) 6. FW sends Alive GP[0] MSIx 7. Device host interface is fully set for BT protocol stack operation. 8. Driver may optionally get debug event with ID 0x97 which can be dropped For Intermediate loadger image, all the above steps are applicable expcept #5 and #6. On HCI_OP_RESET, firmware raises alive interrupt. Driver needs to wait for it before passing control over to bluetooth stack. Co-developed-by: Devegowda Chandrashekar <chandrashekar.devegowda@intel.com> Signed-off-by: Devegowda Chandrashekar <chandrashekar.devegowda@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2024-05-14Bluetooth: btintel_pcie: Refactor and code cleanupKiran K
Minor refactor and s/TX_WAIT_TIMEOUT_MS/BTINTEL_PCIE_TX_WAIT_TIMEOUT_MS/g. Fixes: 6e65a09f9275 ("Bluetooth: btintel_pcie: Add *setup* function to download firmware") Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2024-05-14Bluetooth: btintel_pcie: Add *setup* function to download firmwareKiran K
Add support to download firmware. dmesg: [4.407464] Bluetooth: Core ver 2.22 [4.407467] Bluetooth: Starting self testing [4.409093] Bluetooth: ECDH test passed in 1587 usecs [4.420737] Bluetooth: SMP test passed in 526 usecs [4.420745] Bluetooth: Finished self testing [4.420760] Bluetooth: HCI device and connection manager initialized [4.420764] Bluetooth: HCI socket layer initialized [4.420766] Bluetooth: L2CAP socket layer initialized [4.420769] Bluetooth: SCO socket layer initialized [4.437976] Bluetooth: hci0: Device revision is 0 [4.437979] Bluetooth: hci0: Secure boot is disabled [4.437980] Bluetooth: hci0: OTP lock is disabled [4.437980] Bluetooth: hci0: API lock is disabled [4.437981] Bluetooth: hci0: Debug lock is disabled [4.437981] Bluetooth: hci0: Minimum firmware build 0 week 0 2000 [4.437982] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 build 45995 [4.439461] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi [4.439467] Bluetooth: hci0: Boot Address: 0x30099000 [4.439468] Bluetooth: hci0: Firmware Version: 92-19.24 [4.486773] Bluetooth: hci0: Waiting for firmware download to complete [4.486784] Bluetooth: hci0: Firmware loaded in 46209 usecs [4.486845] Bluetooth: hci0: Waiting for device to boot [4.491984] Bluetooth: hci0: Malformed MSFT vendor event: 0x02 [4.491987] Bluetooth: hci0: Device booted in 5074 usecs [4.496657] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291.sfi [4.496703] Bluetooth: hci0: Boot Address: 0x10000800 [4.496704] Bluetooth: hci0: Firmware Version: 92-19.24 [4.687338] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [4.687342] Bluetooth: BNEP filters: protocol multicast [4.687345] Bluetooth: BNEP socket layer initialized [4.922589] Bluetooth: hci0: Waiting for firmware download to complete [4.922608] Bluetooth: hci0: Firmware loaded in 415962 usecs [4.922664] Bluetooth: hci0: Waiting for device to boot [4.956185] Bluetooth: hci0: Malformed MSFT vendor event: 0x02 [4.956188] Bluetooth: hci0: Device booted in 32770 usecs [4.963167] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-0190-0291.ddc [4.963440] Bluetooth: hci0: Applying Intel DDC parameters completed [4.963684] Bluetooth: hci0: Firmware timestamp 2024.18 buildtype 3 build 62300 [4.963687] Bluetooth: hci0: Firmware SHA1: 0x8201a4cd [5.003020] Bluetooth: MGMT ver 1.22 [5.003084] Bluetooth: ISO socket layer initialized [5.057844] Bluetooth: RFCOMM TTY layer initialized [5.057858] Bluetooth: RFCOMM socket layer initialized [5.057865] Bluetooth: RFCOMM ver 1.11 hciconfig -a: hci0: Type: Primary Bus: PCI BD Address: A0:D3:65:48:F5:7F ACL MTU: 1021:5 SCO MTU: 240:8 UP RUNNING PSCAN RX bytes:23603 acl:0 sco:0 events:3792 errors:0 TX bytes:949804 acl:0 sco:0 commands:3788 errors:0 Features: 0xbf 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: RSWITCH SNIFF Link mode: PERIPHERAL ACCEPT Name: 'LNLM620' Class: 0x20010c Service Classes: Audio Device Class: Computer, Laptop HCI Version: 5.4 (0xd) Revision: 0x4b5c LMP Version: 5.4 (0xd) Subversion: 0x4b5c Manufacturer: Intel Corp. (2) Signed-off-by: Chandrashekar <chandrashekar.devegowda@intel.com> Suggested-by: Bjorn Helgaas <helgaas@kernel.org> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2024-05-14Bluetooth: btintel_pcie: Add support for PCIe transportTedd Ho-Jeong An
Add initial code to support Intel bluetooth devices based on PCIe transport. Allocate memory for TX & RX buffers, internal structures, initialize interrupts for TX & RX and PCIe device. Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com> Suggested-by: Bjorn Helgaas <helgaas@kernel.org> Suggested-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-02 13:58:53 +0000