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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-10-26 10:57:38 +08:00
Zijun Hu
3669487308
QCC2072 has a Peripheral (PERI) subsystem to support the BT function
unit, the transport wire is owned by PERI and carries both BT-HCI and
PERI-HCI frames, as shown below:
_______________________________
USB I/F | internal link |
BTHOST -------- |---- PERI -------------- BT |
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(other on-chip subsystems omitted)
PERI has its own command/event/ACL traffic, memdump, and firmware
(PATCH and NVM), all different from BT's own, and BTHOST needs to
interact with PERI directly.
To support multi-subsystem controllers, add btusb_qcom.c/.h as a new
transport-specific design:
- Multi-subsystem memdump collection.
- Generic PERI event handling, and sending a PERI frame then
syncing an event sequence.
- Downloading PERI firmware (rampatch and NVM).
- Recovery on command timeout or hardware error event.
BTW, it also supports BT-only chips.
/sys/kernel/debug/usb/devices:
T: Bus=03 Lev=02 Prnt=02 Port=02 Cnt=01 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0cf3 ProdID=ea00 Rev= 0.01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
I: If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 63 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 63 Ivl=1ms
I: If#= 1 Alt= 7 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 65 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 65 Ivl=1ms
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Qualcomm Bluetooth USB transport-specific support
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*
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* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
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*/
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#ifndef __BTUSB_QCOM_H
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#define __BTUSB_QCOM_H
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include <linux/skbuff.h>
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#include <linux/usb.h>
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#include <net/bluetooth/hci_core.h>
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#define QPERI_COMMAND_PKT 0x31
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#define QPERI_ACLDATA_PKT 0x32
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#define QPERI_EVENT_PKT 0x34
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struct btusb_qcom {
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__u16 idVendor;
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__u16 idProduct;
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struct usb_device *udev;
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struct usb_interface *intf;
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struct gpio_desc *reset_gpio;
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/* serializes sending BT and vendor frames to the transport */
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struct mutex tx_mutex;
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void (*prepare_reset)(struct hci_dev *hdev);
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int (*recv_bt_frame)(struct hci_dev *hdev, struct sk_buff *skb);
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int (*send_bt_frame)(struct hci_dev *hdev, struct sk_buff *skb);
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int (*send_vendor_frame)(struct hci_dev *hdev, struct sk_buff *skb);
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};
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#if IS_ENABLED(CONFIG_BT_HCIBTUSB_QCOM)
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int btusb_qcom_hdev_priv_size(void);
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struct btusb_qcom *btusb_qcom_xport_data(struct hci_dev *hdev);
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int btusb_qcom_setup(struct hci_dev *hdev);
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int btusb_qcom_disconnect(struct hci_dev *hdev);
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int btusb_qcom_send_frame(struct hci_dev *hdev, struct sk_buff *skb);
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struct sk_buff *btusb_qcom_recv_intr(struct hci_dev *hdev, struct sk_buff *skb,
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void *buffer, int count, int *err);
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struct sk_buff *btusb_qcom_recv_bulk(struct hci_dev *hdev, struct sk_buff *skb,
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void *buffer, int count, int *err);
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#else
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static inline int btusb_qcom_hdev_priv_size(void)
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{
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return 0;
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}
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static inline struct btusb_qcom *btusb_qcom_xport_data(struct hci_dev *hdev)
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{
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return NULL;
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}
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static inline int btusb_qcom_setup(struct hci_dev *hdev)
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{
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return -EOPNOTSUPP;
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}
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static inline int btusb_qcom_disconnect(struct hci_dev *hdev)
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{
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return -EOPNOTSUPP;
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}
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static inline int btusb_qcom_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
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{
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return -EOPNOTSUPP;
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}
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static inline struct sk_buff *btusb_qcom_recv_intr(struct hci_dev *hdev,
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struct sk_buff *skb,
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void *buffer, int count,
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int *err)
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{
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*err = -EOPNOTSUPP;
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return NULL;
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}
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static inline struct sk_buff *btusb_qcom_recv_bulk(struct hci_dev *hdev,
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struct sk_buff *skb,
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void *buffer, int count,
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int *err)
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{
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*err = -EOPNOTSUPP;
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return NULL;
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}
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#endif
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#endif
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