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| author | Kiran K <kiran.k@intel.com> | 2024-10-01 16:14:50 +0530 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2024-11-14 15:30:34 -0500 |
| commit | 05c200c8f0295c9c91beeb3ee0552331c1f8adbe (patch) | |
| tree | 746db2511a08a46c15d4ba51cbd862d13fc1ddd0 /drivers/bluetooth/btintel.h | |
| parent | 59437cbb5781227567dec226aaa88c66a09ccc5a (diff) | |
| download | lwn-05c200c8f0295c9c91beeb3ee0552331c1f8adbe.tar.gz lwn-05c200c8f0295c9c91beeb3ee0552331c1f8adbe.zip | |
Bluetooth: btintel_pcie: Add handshake between driver and firmware
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>
Diffstat (limited to 'drivers/bluetooth/btintel.h')
| -rw-r--r-- | drivers/bluetooth/btintel.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index aa70e4c27416..b448c67e8ed9 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -178,6 +178,7 @@ enum { INTEL_ROM_LEGACY, INTEL_ROM_LEGACY_NO_WBS_SUPPORT, INTEL_ACPI_RESET_ACTIVE, + INTEL_WAIT_FOR_D0, __INTEL_NUM_FLAGS, }; @@ -249,6 +250,7 @@ int btintel_bootloader_setup_tlv(struct hci_dev *hdev, int btintel_shutdown_combined(struct hci_dev *hdev); void btintel_hw_error(struct hci_dev *hdev, u8 code); void btintel_print_fseq_info(struct hci_dev *hdev); +int btintel_diagnostics(struct hci_dev *hdev, struct sk_buff *skb); #else static inline int btintel_check_bdaddr(struct hci_dev *hdev) @@ -382,4 +384,9 @@ static inline void btintel_hw_error(struct hci_dev *hdev, u8 code) static inline void btintel_print_fseq_info(struct hci_dev *hdev) { } + +static inline int btintel_diagnostics(struct hci_dev *hdev, struct sk_buff *skb) +{ + return -EOPNOTSUPP; +} #endif |