From e22a3a9d4134d7e6351a2998771522e74bcc58da Mon Sep 17 00:00:00 2001 From: Kiran K Date: Wed, 3 Jul 2024 14:22:42 +0530 Subject: Bluetooth: btintel: Fail setup on error Do not attempt to send any hci command to controller if *setup* function fails. Fixes: af395330abed ("Bluetooth: btintel: Add Intel devcoredump support") Signed-off-by: Kiran K Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/btintel.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/bluetooth/btintel.c') diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index e7a612504ab1..2ebc970e6573 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -3085,6 +3085,9 @@ static int btintel_setup_combined(struct hci_dev *hdev) btintel_set_dsm_reset_method(hdev, &ver_tlv); err = btintel_bootloader_setup_tlv(hdev, &ver_tlv); + if (err) + goto exit_error; + btintel_register_devcoredump_support(hdev); btintel_print_fseq_info(hdev); break; -- cgit v1.2.3 From aae6b81260fd9a7224f7eb4fc440d625852245bb Mon Sep 17 00:00:00 2001 From: Luiz Augusto von Dentz Date: Mon, 12 Aug 2024 10:43:48 -0400 Subject: Bluetooth: HCI: Invert LE State quirk to be opt-out rather then opt-in This inverts the LE State quirk so by default we assume the controllers would report valid states rather than invalid which is how quirks normally behave, also this would result in HCI command failing it the LE States are really broken thus exposing the controllers that are really broken in this respect. Link: https://github.com/bluez/bluez/issues/584 Fixes: 220915857e29 ("Bluetooth: Adding driver and quirk defs for multi-role LE") Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/btintel.c | 10 ---------- drivers/bluetooth/btintel_pcie.c | 3 --- drivers/bluetooth/btmtksdio.c | 3 --- drivers/bluetooth/btrtl.c | 1 - drivers/bluetooth/btusb.c | 4 ++-- drivers/bluetooth/hci_qca.c | 4 ++-- drivers/bluetooth/hci_vhci.c | 2 -- include/net/bluetooth/hci.h | 17 ++++++++++------- include/net/bluetooth/hci_core.h | 2 +- net/bluetooth/hci_event.c | 2 +- 10 files changed, 16 insertions(+), 32 deletions(-) (limited to 'drivers/bluetooth/btintel.c') diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index 2ebc970e6573..7d5e4de64e3c 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -2945,9 +2945,6 @@ static int btintel_setup_combined(struct hci_dev *hdev) INTEL_ROM_LEGACY_NO_WBS_SUPPORT)) set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); - if (ver.hw_variant == 0x08 && ver.fw_variant == 0x22) - set_bit(HCI_QUIRK_VALID_LE_STATES, - &hdev->quirks); err = btintel_legacy_rom_setup(hdev, &ver); break; @@ -2956,7 +2953,6 @@ static int btintel_setup_combined(struct hci_dev *hdev) case 0x12: /* ThP */ case 0x13: /* HrP */ case 0x14: /* CcP */ - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); fallthrough; case 0x0c: /* WsP */ /* Apply the device specific HCI quirks @@ -3048,9 +3044,6 @@ static int btintel_setup_combined(struct hci_dev *hdev) /* These variants don't seem to support LE Coded PHY */ set_bit(HCI_QUIRK_BROKEN_LE_CODED, &hdev->quirks); - /* Set Valid LE States quirk */ - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); - /* Setup MSFT Extension support */ btintel_set_msft_opcode(hdev, ver.hw_variant); @@ -3076,9 +3069,6 @@ static int btintel_setup_combined(struct hci_dev *hdev) */ set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); - /* Apply LE States quirk from solar onwards */ - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); - /* Setup MSFT Extension support */ btintel_set_msft_opcode(hdev, INTEL_HW_VARIANT(ver_tlv.cnvi_bt)); diff --git a/drivers/bluetooth/btintel_pcie.c b/drivers/bluetooth/btintel_pcie.c index 0d1a0415557b..1c7631f22c52 100644 --- a/drivers/bluetooth/btintel_pcie.c +++ b/drivers/bluetooth/btintel_pcie.c @@ -1180,9 +1180,6 @@ static int btintel_pcie_setup(struct hci_dev *hdev) */ set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); - /* Apply LE States quirk from solar onwards */ - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); - /* Setup MSFT Extension support */ btintel_set_msft_opcode(hdev, INTEL_HW_VARIANT(ver_tlv.cnvi_bt)); diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 39d6898497a4..497e4c87f5be 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -1148,9 +1148,6 @@ static int btmtksdio_setup(struct hci_dev *hdev) } } - /* Valid LE States quirk for MediaTek 7921 */ - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); - break; case 0x7663: case 0x7668: diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index f2f37143c454..fd7991ea7672 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -1287,7 +1287,6 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) case CHIP_ID_8852C: case CHIP_ID_8851B: case CHIP_ID_8852BT: - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); /* RTL8852C needs to transmit mSBC data continuously without diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index acdba5d77694..51d9d4532dda 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3956,8 +3956,8 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_WIDEBAND_SPEECH) set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); - if (id->driver_info & BTUSB_VALID_LE_STATES) - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); + if (!(id->driver_info & BTUSB_VALID_LE_STATES)) + set_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks); if (id->driver_info & BTUSB_DIGIANSWER) { data->cmdreq_type = USB_TYPE_VENDOR; diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 45adc1560d94..4b1ad7ea5b95 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -2474,8 +2474,8 @@ static int qca_serdev_probe(struct serdev_device *serdev) set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); - if (data->capabilities & QCA_CAP_VALID_LE_STATES) - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); + if (!(data->capabilities & QCA_CAP_VALID_LE_STATES)) + set_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks); } return 0; diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c index c4046f8f1985..43e9ac5a3324 100644 --- a/drivers/bluetooth/hci_vhci.c +++ b/drivers/bluetooth/hci_vhci.c @@ -425,8 +425,6 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode) if (opcode & 0x80) set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); - set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); - if (hci_register_dev(hdev) < 0) { BT_ERR("Can't register HCI device"); hci_free_dev(hdev); diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index e372a88e8c3f..d1d073089f38 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -206,14 +206,17 @@ enum { */ HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, - /* When this quirk is set, the controller has validated that - * LE states reported through the HCI_LE_READ_SUPPORTED_STATES are - * valid. This mechanism is necessary as many controllers have - * been seen has having trouble initiating a connectable - * advertisement despite the state combination being reported as - * supported. + /* When this quirk is set, the LE states reported through the + * HCI_LE_READ_SUPPORTED_STATES are invalid/broken. + * + * This mechanism is necessary as many controllers have been seen has + * having trouble initiating a connectable advertisement despite the + * state combination being reported as supported. + * + * This quirk can be set before hci_register_dev is called or + * during the hdev->setup vendor callback. */ - HCI_QUIRK_VALID_LE_STATES, + HCI_QUIRK_BROKEN_LE_STATES, /* When this quirk is set, then erroneous data reporting * is ignored. This is mainly due to the fact that the HCI diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 31020891fc68..e449dba698f3 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -825,7 +825,7 @@ extern struct mutex hci_cb_list_lock; } while (0) #define hci_dev_le_state_simultaneous(hdev) \ - (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ + (!test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) && \ (hdev->le_states[4] & 0x08) && /* Central */ \ (hdev->le_states[4] & 0x40) && /* Peripheral */ \ (hdev->le_states[3] & 0x10)) /* Simultaneous */ diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index d0c118c47f6c..1c82dcdf6e8f 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -5920,7 +5920,7 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, * while we have an existing one in peripheral role. */ if (hdev->conn_hash.le_num_peripheral > 0 && - (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || + (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) || !(hdev->le_states[3] & 0x10))) return NULL; -- cgit v1.2.3 From eb9e749c0182affafadfbe5ded4503c4b5a9b57c Mon Sep 17 00:00:00 2001 From: Kiran K Date: Thu, 18 Jul 2024 20:18:04 +0530 Subject: Bluetooth: btintel: Allow configuring drive strength of BRI BRI (Bluetooth Radio Interface) traffic from CNVr to CNVi was found causing cross talk step errors to WiFi. To avoid this potential issue OEM platforms can replace BRI resistor to adjust the BRI response line drive strength. During the *setup*, driver reads the drive strength value from uefi variable and passes it to the controller via vendor specific command with opcode 0xfc0a. dmesg: .. [21.982720] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 build 45995 [21.984250] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi [21.984255] Bluetooth: hci0: Boot Address: 0x30099000 [21.984256] Bluetooth: hci0: Firmware Version: 160-24.24 [22.011501] Bluetooth: hci0: Waiting for firmware download to complete [22.011518] Bluetooth: hci0: Firmware loaded in 26624 usecs [22.011584] Bluetooth: hci0: Waiting for device to boot [22.013546] Bluetooth: hci0: Malformed MSFT vendor event: 0x02 [22.013552] Bluetooth: hci0: Device booted in 1967 usecs ... [22.013792] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b ... [22.015027] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291.sfi [22.015041] Bluetooth: hci0: Boot Address: 0x10000800 [22.015043] Bluetooth: hci0: Firmware Version: 160-24.24 [22.395821] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [22.395828] Bluetooth: BNEP filters: protocol multicast ... Signed-off-by: Kiran K Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/btintel.c | 124 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) (limited to 'drivers/bluetooth/btintel.c') diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index 7d5e4de64e3c..1ccbb5157515 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include @@ -26,6 +27,8 @@ #define ECDSA_OFFSET 644 #define ECDSA_HEADER_LEN 320 +#define BTINTEL_EFI_DSBR L"UefiCnvCommonDSBR" + enum { DSM_SET_WDISABLE2_DELAY = 1, DSM_SET_RESET_METHOD = 3, @@ -2616,6 +2619,120 @@ static u8 btintel_classify_pkt_type(struct hci_dev *hdev, struct sk_buff *skb) return hci_skb_pkt_type(skb); } +/* + * UefiCnvCommonDSBR UEFI variable provides information from the OEM platforms + * if they have replaced the BRI (Bluetooth Radio Interface) resistor to + * overcome the potential STEP errors on their designs. Based on the + * configauration, bluetooth firmware shall adjust the BRI response line drive + * strength. The below structure represents DSBR data. + * struct { + * u8 header; + * u32 dsbr; + * } __packed; + * + * header - defines revision number of the structure + * dsbr - defines drive strength BRI response + * bit0 + * 0 - instructs bluetooth firmware to use default values + * 1 - instructs bluetooth firmware to override default values + * bit3:1 + * Reserved + * bit7:4 + * DSBR override values (only if bit0 is set. Default value is 0xF + * bit31:7 + * Reserved + * Expected values for dsbr field: + * 1. 0xF1 - indicates that the resistor on board is 33 Ohm + * 2. 0x00 or 0xB1 - indicates that the resistor on board is 10 Ohm + * 3. Non existing UEFI variable or invalid (none of the above) - indicates + * that the resistor on board is 10 Ohm + * Even if uefi variable is not present, driver shall send 0xfc0a command to + * firmware to use default values. + * + */ +static int btintel_uefi_get_dsbr(u32 *dsbr_var) +{ + struct btintel_dsbr { + u8 header; + u32 dsbr; + } __packed data; + + efi_status_t status; + unsigned long data_size = 0; + efi_guid_t guid = EFI_GUID(0xe65d8884, 0xd4af, 0x4b20, 0x8d, 0x03, + 0x77, 0x2e, 0xcc, 0x3d, 0xa5, 0x31); + + if (!IS_ENABLED(CONFIG_EFI)) + return -EOPNOTSUPP; + + if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) + return -EOPNOTSUPP; + + status = efi.get_variable(BTINTEL_EFI_DSBR, &guid, NULL, &data_size, + NULL); + + if (status != EFI_BUFFER_TOO_SMALL || !data_size) + return -EIO; + + status = efi.get_variable(BTINTEL_EFI_DSBR, &guid, NULL, &data_size, + &data); + + if (status != EFI_SUCCESS) + return -ENXIO; + + *dsbr_var = data.dsbr; + return 0; +} + +static int btintel_set_dsbr(struct hci_dev *hdev, struct intel_version_tlv *ver) +{ + struct btintel_dsbr_cmd { + u8 enable; + u8 dsbr; + } __packed; + + struct btintel_dsbr_cmd cmd; + struct sk_buff *skb; + u8 status; + u32 dsbr; + bool apply_dsbr; + int err; + + /* DSBR command needs to be sent for BlazarI + B0 step product after + * downloading IML image. + */ + apply_dsbr = (ver->img_type == BTINTEL_IMG_IML && + ((ver->cnvi_top & 0xfff) == BTINTEL_CNVI_BLAZARI) && + INTEL_CNVX_TOP_STEP(ver->cnvi_top) == 0x01); + + if (!apply_dsbr) + return 0; + + dsbr = 0; + err = btintel_uefi_get_dsbr(&dsbr); + if (err < 0) + bt_dev_dbg(hdev, "Error reading efi: %ls (%d)", + BTINTEL_EFI_DSBR, err); + + cmd.enable = dsbr & BIT(0); + cmd.dsbr = dsbr >> 4 & 0xF; + + bt_dev_info(hdev, "dsbr: enable: 0x%2.2x value: 0x%2.2x", cmd.enable, + cmd.dsbr); + + skb = __hci_cmd_sync(hdev, 0xfc0a, sizeof(cmd), &cmd, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) + return -bt_to_errno(PTR_ERR(skb)); + + status = skb->data[0]; + kfree_skb(skb); + + if (status) + return -bt_to_errno(status); + + return 0; +} + int btintel_bootloader_setup_tlv(struct hci_dev *hdev, struct intel_version_tlv *ver) { @@ -2650,6 +2767,13 @@ int btintel_bootloader_setup_tlv(struct hci_dev *hdev, if (err) return err; + /* set drive strength of BRI response */ + err = btintel_set_dsbr(hdev, ver); + if (err) { + bt_dev_err(hdev, "Failed to send dsbr command (%d)", err); + return err; + } + /* If image type returned is BTINTEL_IMG_IML, then controller supports * intermediate loader image */ -- cgit v1.2.3