From patchwork Tue Apr 6 19:55:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Holtmann X-Patchwork-Id: 12185823 X-Patchwork-Delegate: luiz.dentz@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70375C433B4 for ; Tue, 6 Apr 2021 19:56:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4128E61246 for ; Tue, 6 Apr 2021 19:56:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242870AbhDFT4L (ORCPT ); Tue, 6 Apr 2021 15:56:11 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:35443 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233018AbhDFT4K (ORCPT ); Tue, 6 Apr 2021 15:56:10 -0400 Received: from localhost.localdomain (p4ff9f418.dip0.t-ipconnect.de [79.249.244.24]) by mail.holtmann.org (Postfix) with ESMTPSA id AAB97CECC5 for ; Tue, 6 Apr 2021 22:03:43 +0200 (CEST) From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 1/5] Bluetooth: Add support for reading AOSP vendor capabilities Date: Tue, 6 Apr 2021 21:55:52 +0200 Message-Id: <20210406195556.316663-1-marcel@holtmann.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org When drivers indicate support for AOSP vendor extension, initialize them and read its capabilities. Signed-off-by: Marcel Holtmann --- include/net/bluetooth/hci_core.h | 11 ++++++++++ net/bluetooth/Kconfig | 7 +++++++ net/bluetooth/Makefile | 1 + net/bluetooth/aosp.c | 35 ++++++++++++++++++++++++++++++++ net/bluetooth/aosp.h | 16 +++++++++++++++ net/bluetooth/hci_core.c | 3 +++ 6 files changed, 73 insertions(+) create mode 100644 net/bluetooth/aosp.c create mode 100644 net/bluetooth/aosp.h diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index ca4ac6603b9a..aa2879a3b0dd 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -586,6 +586,10 @@ struct hci_dev { void *msft_data; #endif +#if IS_ENABLED(CONFIG_BT_AOSPEXT) + bool aosp_capable; +#endif + int (*open)(struct hci_dev *hdev); int (*close)(struct hci_dev *hdev); int (*flush)(struct hci_dev *hdev); @@ -1239,6 +1243,13 @@ static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) #endif } +static inline void hci_set_aosp_capable(struct hci_dev *hdev) +{ +#if IS_ENABLED(CONFIG_BT_AOSPEXT) + hdev->aosp_capable = true; +#endif +} + int hci_dev_open(__u16 dev); int hci_dev_close(__u16 dev); int hci_dev_do_close(struct hci_dev *hdev); diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig index 400c5130dc0a..e0ab4cd7afc3 100644 --- a/net/bluetooth/Kconfig +++ b/net/bluetooth/Kconfig @@ -99,6 +99,13 @@ config BT_MSFTEXT This options enables support for the Microsoft defined HCI vendor extensions. +config BT_AOSPEXT + bool "Enable Android Open Source Project extensions" + depends on BT + help + This options enables support for the Android Open Source + Project defined HCI vendor extensions. + config BT_DEBUGFS bool "Export Bluetooth internals in debugfs" depends on BT && DEBUG_FS diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile index 1c645fba8c49..cc0995301f93 100644 --- a/net/bluetooth/Makefile +++ b/net/bluetooth/Makefile @@ -20,5 +20,6 @@ bluetooth-$(CONFIG_BT_BREDR) += sco.o bluetooth-$(CONFIG_BT_HS) += a2mp.o amp.o bluetooth-$(CONFIG_BT_LEDS) += leds.o bluetooth-$(CONFIG_BT_MSFTEXT) += msft.o +bluetooth-$(CONFIG_BT_AOSPEXT) += aosp.o bluetooth-$(CONFIG_BT_DEBUGFS) += hci_debugfs.o bluetooth-$(CONFIG_BT_SELFTEST) += selftest.o diff --git a/net/bluetooth/aosp.c b/net/bluetooth/aosp.c new file mode 100644 index 000000000000..a1b7762335a5 --- /dev/null +++ b/net/bluetooth/aosp.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021 Intel Corporation + */ + +#include +#include + +#include "aosp.h" + +void aosp_do_open(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + if (!hdev->aosp_capable) + return; + + bt_dev_dbg(hdev, "Initialize AOSP extension"); + + /* LE Get Vendor Capabilities Command */ + skb = __hci_cmd_sync(hdev, hci_opcode_pack(0x3f, 0x153), 0, NULL, + HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) + return; + + kfree_skb(skb); +} + +void aosp_do_close(struct hci_dev *hdev) +{ + if (!hdev->aosp_capable) + return; + + bt_dev_dbg(hdev, "Cleanup of AOSP extension"); +} diff --git a/net/bluetooth/aosp.h b/net/bluetooth/aosp.h new file mode 100644 index 000000000000..328fc6d39f70 --- /dev/null +++ b/net/bluetooth/aosp.h @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021 Intel Corporation + */ + +#if IS_ENABLED(CONFIG_BT_AOSPEXT) + +void aosp_do_open(struct hci_dev *hdev); +void aosp_do_close(struct hci_dev *hdev); + +#else + +static inline void aosp_do_open(struct hci_dev *hdev) {} +static inline void aosp_do_close(struct hci_dev *hdev) {} + +#endif diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index b0d9c36acc03..0da9b3274986 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -44,6 +44,7 @@ #include "smp.h" #include "leds.h" #include "msft.h" +#include "aosp.h" static void hci_rx_work(struct work_struct *work); static void hci_cmd_work(struct work_struct *work); @@ -1586,6 +1587,7 @@ static int hci_dev_do_open(struct hci_dev *hdev) ret = hdev->set_diag(hdev, true); msft_do_open(hdev); + aosp_do_open(hdev); clear_bit(HCI_INIT, &hdev->flags); @@ -1782,6 +1784,7 @@ int hci_dev_do_close(struct hci_dev *hdev) hci_sock_dev_event(hdev, HCI_DEV_DOWN); + aosp_do_close(hdev); msft_do_close(hdev); if (hdev->flush) From patchwork Tue Apr 6 19:55:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Holtmann X-Patchwork-Id: 12185825 X-Patchwork-Delegate: luiz.dentz@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E975EC433ED for ; Tue, 6 Apr 2021 19:56:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ACE09613B8 for ; Tue, 6 Apr 2021 19:56:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242883AbhDFT4M (ORCPT ); Tue, 6 Apr 2021 15:56:12 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:48301 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235436AbhDFT4K (ORCPT ); Tue, 6 Apr 2021 15:56:10 -0400 Received: from localhost.localdomain (p4ff9f418.dip0.t-ipconnect.de [79.249.244.24]) by mail.holtmann.org (Postfix) with ESMTPSA id D6ABFCECC6 for ; Tue, 6 Apr 2021 22:03:43 +0200 (CEST) From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 2/5] Bluetooth: Add support for virtio transport driver Date: Tue, 6 Apr 2021 21:55:53 +0200 Message-Id: <20210406195556.316663-2-marcel@holtmann.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This adds support for Bluetooth HCI transport over virtio. Signed-off-by: Marcel Holtmann --- drivers/bluetooth/Kconfig | 10 + drivers/bluetooth/Makefile | 2 + drivers/bluetooth/virtio_bt.c | 401 ++++++++++++++++++++++++++++++++ include/uapi/linux/virtio_bt.h | 31 +++ include/uapi/linux/virtio_ids.h | 1 + 5 files changed, 445 insertions(+) create mode 100644 drivers/bluetooth/virtio_bt.c create mode 100644 include/uapi/linux/virtio_bt.h diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 4e73a531b377..851842372c9b 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -425,4 +425,14 @@ config BT_HCIRSI Say Y here to compile support for HCI over Redpine into the kernel or say M to compile as a module. +config BT_VIRTIO + tristate "Virtio Bluetooth driver" + depends on VIRTIO + help + Virtio Bluetooth support driver. + This driver supports Virtio Bluetooth devices. + + Say Y here to compile support for HCI over Virtio into the + kernel or say M to compile as a module. + endmenu diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index 1a58a3ae142c..16286ea2655d 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -26,6 +26,8 @@ obj-$(CONFIG_BT_BCM) += btbcm.o obj-$(CONFIG_BT_RTL) += btrtl.o obj-$(CONFIG_BT_QCA) += btqca.o +obj-$(CONFIG_BT_VIRTIO) += virtio_bt.o + obj-$(CONFIG_BT_HCIUART_NOKIA) += hci_nokia.o obj-$(CONFIG_BT_HCIRSI) += btrsi.o diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c new file mode 100644 index 000000000000..c804db7e90f8 --- /dev/null +++ b/drivers/bluetooth/virtio_bt.c @@ -0,0 +1,401 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include + +#include +#include + +#include +#include + +#define VERSION "0.1" + +enum { + VIRTBT_VQ_TX, + VIRTBT_VQ_RX, + VIRTBT_NUM_VQS, +}; + +struct virtio_bluetooth { + struct virtio_device *vdev; + struct virtqueue *vqs[VIRTBT_NUM_VQS]; + struct work_struct rx; + struct hci_dev *hdev; +}; + +static int virtbt_add_inbuf(struct virtio_bluetooth *vbt) +{ + struct virtqueue *vq = vbt->vqs[VIRTBT_VQ_RX]; + struct scatterlist sg[1]; + struct sk_buff *skb; + int err; + + skb = alloc_skb(1000, GFP_KERNEL); + sg_init_one(sg, skb->data, 1000); + + err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL); + if (err < 0) { + kfree_skb(skb); + return err; + } + + return 0; +} + +static int virtbt_open(struct hci_dev *hdev) +{ + struct virtio_bluetooth *vbt = hci_get_drvdata(hdev); + + if (virtbt_add_inbuf(vbt) < 0) + return -EIO; + + virtqueue_kick(vbt->vqs[VIRTBT_VQ_RX]); + return 0; +} + +static int virtbt_close(struct hci_dev *hdev) +{ + struct virtio_bluetooth *vbt = hci_get_drvdata(hdev); + int i; + + cancel_work_sync(&vbt->rx); + + for (i = 0; i < ARRAY_SIZE(vbt->vqs); i++) { + struct virtqueue *vq = vbt->vqs[i]; + struct sk_buff *skb; + + while ((skb = virtqueue_detach_unused_buf(vq))) + kfree_skb(skb); + } + + return 0; +} + +static int virtbt_flush(struct hci_dev *hdev) +{ + return 0; +} + +static int virtbt_send_frame(struct hci_dev *hdev, struct sk_buff *skb) +{ + struct virtio_bluetooth *vbt = hci_get_drvdata(hdev); + struct scatterlist sg[1]; + int err; + + memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); + + sg_init_one(sg, skb->data, skb->len); + err = virtqueue_add_outbuf(vbt->vqs[VIRTBT_VQ_TX], sg, 1, skb, + GFP_KERNEL); + if (err) { + kfree_skb(skb); + return err; + } + + virtqueue_kick(vbt->vqs[VIRTBT_VQ_TX]); + return 0; +} + +static int virtbt_setup_zephyr(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Read Build Information */ + skb = __hci_cmd_sync(hdev, 0xfc08, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); + + hci_set_fw_info(hdev, "%s", skb->data + 1); + + kfree_skb(skb); + return 0; +} + +static int virtbt_set_bdaddr_zephyr(struct hci_dev *hdev, + const bdaddr_t *bdaddr) +{ + struct sk_buff *skb; + + /* Write BD_ADDR */ + skb = __hci_cmd_sync(hdev, 0xfc06, 6, bdaddr, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static int virtbt_setup_intel(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Intel Read Version */ + skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static int virtbt_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr) +{ + struct sk_buff *skb; + + /* Intel Write BD Address */ + skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static int virtbt_setup_realtek(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Read ROM Version */ + skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "ROM version %u", *((__u8 *) (skb->data + 1))); + + kfree_skb(skb); + return 0; +} + +static int virtbt_shutdown_generic(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Reset */ + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static void virtbt_rx_handle(struct virtio_bluetooth *vbt, struct sk_buff *skb) +{ + __u8 pkt_type; + + pkt_type = *((__u8 *) skb->data); + skb_pull(skb, 1); + + switch (pkt_type) { + case HCI_EVENT_PKT: + case HCI_ACLDATA_PKT: + case HCI_SCODATA_PKT: + case HCI_ISODATA_PKT: + hci_skb_pkt_type(skb) = pkt_type; + hci_recv_frame(vbt->hdev, skb); + break; + } +} + +static void virtbt_rx_work(struct work_struct *work) +{ + struct virtio_bluetooth *vbt = container_of(work, + struct virtio_bluetooth, rx); + struct sk_buff *skb; + unsigned int len; + + skb = virtqueue_get_buf(vbt->vqs[VIRTBT_VQ_RX], &len); + if (!skb) + return; + + skb->len = len; + virtbt_rx_handle(vbt, skb); + + if (virtbt_add_inbuf(vbt) < 0) + return; + + virtqueue_kick(vbt->vqs[VIRTBT_VQ_RX]); +} + +static void virtbt_tx_done(struct virtqueue *vq) +{ + struct sk_buff *skb; + unsigned int len; + + while ((skb = virtqueue_get_buf(vq, &len))) + kfree_skb(skb); +} + +static void virtbt_rx_done(struct virtqueue *vq) +{ + struct virtio_bluetooth *vbt = vq->vdev->priv; + + schedule_work(&vbt->rx); +} + +static int virtbt_probe(struct virtio_device *vdev) +{ + vq_callback_t *callbacks[VIRTBT_NUM_VQS] = { + [VIRTBT_VQ_TX] = virtbt_tx_done, + [VIRTBT_VQ_RX] = virtbt_rx_done, + }; + const char *names[VIRTBT_NUM_VQS] = { + [VIRTBT_VQ_TX] = "tx", + [VIRTBT_VQ_RX] = "rx", + }; + struct virtio_bluetooth *vbt; + struct hci_dev *hdev; + int err; + __u8 type; + + if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return -ENODEV; + + type = virtio_cread8(vdev, offsetof(struct virtio_bt_config, type)); + + switch (type) { + case VIRTIO_BT_CONFIG_TYPE_PRIMARY: + case VIRTIO_BT_CONFIG_TYPE_AMP: + break; + default: + return -EINVAL; + } + + vbt = kzalloc(sizeof(*vbt), GFP_KERNEL); + if (!vbt) + return -ENOMEM; + + vdev->priv = vbt; + vbt->vdev = vdev; + + INIT_WORK(&vbt->rx, virtbt_rx_work); + + err = virtio_find_vqs(vdev, VIRTBT_NUM_VQS, vbt->vqs, callbacks, + names, NULL); + if (err) + return err; + + hdev = hci_alloc_dev(); + if (!hdev) { + err = -ENOMEM; + goto failed; + } + + vbt->hdev = hdev; + + hdev->bus = HCI_VIRTIO; + hdev->dev_type = type; + hci_set_drvdata(hdev, vbt); + + hdev->open = virtbt_open; + hdev->close = virtbt_close; + hdev->flush = virtbt_flush; + hdev->send = virtbt_send_frame; + + if (virtio_has_feature(vdev, VIRTIO_BT_F_VND_HCI)) { + __u16 vendor; + + virtio_cread(vdev, struct virtio_bt_config, vendor, &vendor); + + switch (vendor) { + case VIRTIO_BT_CONFIG_VENDOR_ZEPHYR: + hdev->manufacturer = 1521; + hdev->setup = virtbt_setup_zephyr; + hdev->shutdown = virtbt_shutdown_generic; + hdev->set_bdaddr = virtbt_set_bdaddr_zephyr; + break; + + case VIRTIO_BT_CONFIG_VENDOR_INTEL: + hdev->manufacturer = 2; + hdev->setup = virtbt_setup_intel; + hdev->shutdown = virtbt_shutdown_generic; + hdev->set_bdaddr = virtbt_set_bdaddr_intel; + set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); + set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); + set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); + break; + + case VIRTIO_BT_CONFIG_VENDOR_REALTEK: + hdev->manufacturer = 93; + hdev->setup = virtbt_setup_realtek; + hdev->shutdown = virtbt_shutdown_generic; + set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); + set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); + break; + } + } + + if (virtio_has_feature(vdev, VIRTIO_BT_F_MSFT_EXT)) { + __u16 msft_opcode; + + virtio_cread(vdev, struct virtio_bt_config, + msft_opcode, &msft_opcode); + + hci_set_msft_opcode(hdev, msft_opcode); + } + + if (virtio_has_feature(vdev, VIRTIO_BT_F_AOSP_EXT)) + hci_set_aosp_capable(hdev); + + if (hci_register_dev(hdev) < 0) { + hci_free_dev(hdev); + err = -EBUSY; + goto failed; + } + + return 0; + +failed: + vdev->config->del_vqs(vdev); + return err; +} + +static void virtbt_remove(struct virtio_device *vdev) +{ + struct virtio_bluetooth *vbt = vdev->priv; + struct hci_dev *hdev = vbt->hdev; + + hci_unregister_dev(hdev); + vdev->config->reset(vdev); + + hci_free_dev(hdev); + vbt->hdev = NULL; + + vdev->config->del_vqs(vdev); + kfree(vbt); +} + +static struct virtio_device_id virtbt_table[] = { + { VIRTIO_ID_BT, VIRTIO_DEV_ANY_ID }, + { 0 }, +}; + +MODULE_DEVICE_TABLE(virtio, virtbt_table); + +static const unsigned int virtbt_features[] = { + VIRTIO_BT_F_VND_HCI, + VIRTIO_BT_F_MSFT_EXT, + VIRTIO_BT_F_AOSP_EXT, +}; + +static struct virtio_driver virtbt_driver = { + .driver.name = KBUILD_MODNAME, + .driver.owner = THIS_MODULE, + .feature_table = virtbt_features, + .feature_table_size = ARRAY_SIZE(virtbt_features), + .id_table = virtbt_table, + .probe = virtbt_probe, + .remove = virtbt_remove, +}; + +module_virtio_driver(virtbt_driver); + +MODULE_AUTHOR("Marcel Holtmann "); +MODULE_DESCRIPTION("Generic Bluetooth VIRTIO driver ver " VERSION); +MODULE_VERSION(VERSION); +MODULE_LICENSE("GPL"); diff --git a/include/uapi/linux/virtio_bt.h b/include/uapi/linux/virtio_bt.h new file mode 100644 index 000000000000..0cedceaacf88 --- /dev/null +++ b/include/uapi/linux/virtio_bt.h @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: BSD-3-Clause + +#ifndef _UAPI_LINUX_VIRTIO_BT_H +#define _UAPI_LINUX_VIRTIO_BT_H + +#include + +/* Feature bits */ +#define VIRTIO_BT_F_VND_HCI 0 /* Indicates vendor command support */ +#define VIRTIO_BT_F_MSFT_EXT 1 /* Indicates MSFT vendor support */ +#define VIRTIO_BT_F_AOSP_EXT 2 /* Indicates AOSP vendor support */ + +enum virtio_bt_config_type { + VIRTIO_BT_CONFIG_TYPE_PRIMARY = 0, + VIRTIO_BT_CONFIG_TYPE_AMP = 1, +}; + +enum virtio_bt_config_vendor { + VIRTIO_BT_CONFIG_VENDOR_NONE = 0, + VIRTIO_BT_CONFIG_VENDOR_ZEPHYR = 1, + VIRTIO_BT_CONFIG_VENDOR_INTEL = 2, + VIRTIO_BT_CONFIG_VENDOR_REALTEK = 3, +}; + +struct virtio_bt_config { + __u8 type; + __u16 vendor; + __u16 msft_opcode; +} __attribute__((packed)); + +#endif /* _UAPI_LINUX_VIRTIO_BT_H */ diff --git a/include/uapi/linux/virtio_ids.h b/include/uapi/linux/virtio_ids.h index bc1c0621f5ed..b4f468e9441d 100644 --- a/include/uapi/linux/virtio_ids.h +++ b/include/uapi/linux/virtio_ids.h @@ -53,6 +53,7 @@ #define VIRTIO_ID_MEM 24 /* virtio mem */ #define VIRTIO_ID_FS 26 /* virtio filesystem */ #define VIRTIO_ID_PMEM 27 /* virtio pmem */ +#define VIRTIO_ID_BT 28 /* virtio bluetooth */ #define VIRTIO_ID_MAC80211_HWSIM 29 /* virtio mac80211-hwsim */ #endif /* _LINUX_VIRTIO_IDS_H */ From patchwork Tue Apr 6 19:55:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Holtmann X-Patchwork-Id: 12185827 X-Patchwork-Delegate: luiz.dentz@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B999C43462 for ; Tue, 6 Apr 2021 19:56:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2BA96613CB for ; Tue, 6 Apr 2021 19:56:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245105AbhDFT4M (ORCPT ); Tue, 6 Apr 2021 15:56:12 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:36727 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235483AbhDFT4K (ORCPT ); Tue, 6 Apr 2021 15:56:10 -0400 Received: from localhost.localdomain (p4ff9f418.dip0.t-ipconnect.de [79.249.244.24]) by mail.holtmann.org (Postfix) with ESMTPSA id 097EECECC7 for ; Tue, 6 Apr 2021 22:03:44 +0200 (CEST) From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 3/5] Bluetooth: Fix default values for advertising interval Date: Tue, 6 Apr 2021 21:55:54 +0200 Message-Id: <20210406195556.316663-3-marcel@holtmann.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org The DISCOV_LE_FAST_ADV_INT_{MIN,MAX} contants are in msec, but then used later on directly while it is suppose to be N * 0.625 ms according to the Bluetooth Core specification. Signed-off-by: Marcel Holtmann --- include/net/bluetooth/hci_core.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index aa2879a3b0dd..58f7eada26fd 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1754,8 +1754,8 @@ void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 #define DISCOV_BREDR_INQUIRY_LEN 0x08 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ -#define DISCOV_LE_FAST_ADV_INT_MIN 100 /* msec */ -#define DISCOV_LE_FAST_ADV_INT_MAX 150 /* msec */ +#define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ +#define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ void mgmt_fill_version_info(void *ver); int mgmt_new_settings(struct hci_dev *hdev); From patchwork Tue Apr 6 19:55:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Holtmann X-Patchwork-Id: 12185829 X-Patchwork-Delegate: luiz.dentz@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66661C433B4 for ; Tue, 6 Apr 2021 19:56:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1373613D8 for ; Tue, 6 Apr 2021 19:56:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233018AbhDFT4N (ORCPT ); Tue, 6 Apr 2021 15:56:13 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:44360 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235595AbhDFT4K (ORCPT ); Tue, 6 Apr 2021 15:56:10 -0400 Received: from localhost.localdomain (p4ff9f418.dip0.t-ipconnect.de [79.249.244.24]) by mail.holtmann.org (Postfix) with ESMTPSA id 2E712CECC8 for ; Tue, 6 Apr 2021 22:03:44 +0200 (CEST) From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 4/5] Bluetooth: Set defaults for le_scan_{int,window}_adv_monitor Date: Tue, 6 Apr 2021 21:55:55 +0200 Message-Id: <20210406195556.316663-4-marcel@holtmann.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org The le_scan_{int,window}_adv_monitor settings have not been set with a sensible default. Signed-off-by: Marcel Holtmann --- net/bluetooth/hci_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 0da9b3274986..fd12f1652bdf 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3763,6 +3763,8 @@ struct hci_dev *hci_alloc_dev(void) hdev->le_scan_window_suspend = 0x0012; hdev->le_scan_int_discovery = DISCOV_LE_SCAN_INT; hdev->le_scan_window_discovery = DISCOV_LE_SCAN_WIN; + hdev->le_scan_int_adv_monitor = 0x0060; + hdev->le_scan_window_adv_monitor = 0x0030; hdev->le_scan_int_connect = 0x0060; hdev->le_scan_window_connect = 0x0060; hdev->le_conn_min_interval = 0x0018; From patchwork Tue Apr 6 19:55:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Holtmann X-Patchwork-Id: 12185831 X-Patchwork-Delegate: luiz.dentz@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69E8EC43461 for ; Tue, 6 Apr 2021 19:56:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59947613DF for ; Tue, 6 Apr 2021 19:56:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245116AbhDFT4N (ORCPT ); Tue, 6 Apr 2021 15:56:13 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:45469 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237939AbhDFT4K (ORCPT ); Tue, 6 Apr 2021 15:56:10 -0400 Received: from localhost.localdomain (p4ff9f418.dip0.t-ipconnect.de [79.249.244.24]) by mail.holtmann.org (Postfix) with ESMTPSA id 4E2A0CECC9 for ; Tue, 6 Apr 2021 22:03:44 +0200 (CEST) From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 5/5] Bluetooth: Allow Microsoft extension to indicate curve validation Date: Tue, 6 Apr 2021 21:55:56 +0200 Message-Id: <20210406195556.316663-5-marcel@holtmann.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Some controllers don't support the Simple Pairing Options feature that can indicate the support for P-192 and P-256 public key validation. However they might support the Microsoft vendor extension that can indicate the validiation capability as well. Signed-off-by: Marcel Holtmann --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/mgmt.c | 5 ++++- net/bluetooth/msft.c | 8 ++++++++ net/bluetooth/msft.h | 6 ++++++ 4 files changed, 19 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 58f7eada26fd..c73ac52af186 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -584,6 +584,7 @@ struct hci_dev { #if IS_ENABLED(CONFIG_BT_MSFTEXT) __u16 msft_opcode; void *msft_data; + bool msft_curve_validity; #endif #if IS_ENABLED(CONFIG_BT_AOSPEXT) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 59f8016c4866..f9be7f9084d6 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3730,8 +3730,11 @@ static int read_controller_cap(struct sock *sk, struct hci_dev *hdev, /* When the Read Simple Pairing Options command is supported, then * the remote public key validation is supported. + * + * Alternatively, when Microsoft extensions are available, they can + * indicate support for public key validation as well. */ - if (hdev->commands[41] & 0x08) + if ((hdev->commands[41] & 0x08) || msft_curve_validity(hdev)) flags |= 0x01; /* Remote public key validation (BR/EDR) */ flags |= 0x02; /* Remote public key validation (LE) */ diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c index 47b104f318e9..e28f15439ce4 100644 --- a/net/bluetooth/msft.c +++ b/net/bluetooth/msft.c @@ -142,6 +142,9 @@ static bool read_supported_features(struct hci_dev *hdev, msft->evt_prefix_len = rp->evt_prefix_len; msft->features = __le64_to_cpu(rp->features); + if (msft->features & MSFT_FEATURE_MASK_CURVE_VALIDITY) + hdev->msft_curve_validity = true; + kfree_skb(skb); return true; @@ -605,3 +608,8 @@ int msft_set_filter_enable(struct hci_dev *hdev, bool enable) return err; } + +bool msft_curve_validity(struct hci_dev *hdev) +{ + return hdev->msft_curve_validity; +} diff --git a/net/bluetooth/msft.h b/net/bluetooth/msft.h index 88ed613dfa08..6e56d94b88d8 100644 --- a/net/bluetooth/msft.h +++ b/net/bluetooth/msft.h @@ -22,6 +22,7 @@ int msft_remove_monitor(struct hci_dev *hdev, struct adv_monitor *monitor, u16 handle); void msft_req_add_set_filter_enable(struct hci_request *req, bool enable); int msft_set_filter_enable(struct hci_dev *hdev, bool enable); +bool msft_curve_validity(struct hci_dev *hdev); #else @@ -54,4 +55,9 @@ static inline int msft_set_filter_enable(struct hci_dev *hdev, bool enable) return -EOPNOTSUPP; } +static inline bool msft_curve_validity(struct hci_dev *hdev) +{ + return false; +} + #endif