From: Sven Peter <sven@svenpeter.dev>
To: Marcel Holtmann <marcel@holtmann.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc: Sven Peter <sven@svenpeter.dev>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Paolo Abeni <pabeni@redhat.com>, Rob Herring <robh+dt@kernel.org>,
Hector Martin <marcan@marcan.st>,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
asahi@lists.linux.dev, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 5/7] Bluetooth: Add quirk to disable extended scanning
Date: Mon, 19 Sep 2022 18:48:32 +0200 [thread overview]
Message-ID: <20220919164834.62739-6-sven@svenpeter.dev> (raw)
In-Reply-To: <20220919164834.62739-1-sven@svenpeter.dev>
Broadcom 4377 controllers found in Apple x86 Macs with the T2 chip
claim to support extended scanning when querying supported states,
< HCI Command: LE Read Supported St.. (0x08|0x001c) plen 0
> HCI Event: Command Complete (0x0e) plen 12
LE Read Supported States (0x08|0x001c) ncmd 1
Status: Success (0x00)
States: 0x000003ffffffffff
[...]
LE Set Extended Scan Parameters (Octet 37 - Bit 5)
LE Set Extended Scan Enable (Octet 37 - Bit 6)
[...]
, but then fail to actually implement the extended scanning:
< HCI Command: LE Set Extended Sca.. (0x08|0x0041) plen 8
Own address type: Random (0x01)
Filter policy: Accept all advertisement (0x00)
PHYs: 0x01
Entry 0: LE 1M
Type: Active (0x01)
Interval: 11.250 msec (0x0012)
Window: 11.250 msec (0x0012)
> HCI Event: Command Complete (0x0e) plen 4
LE Set Extended Scan Parameters (0x08|0x0041) ncmd 1
Status: Unknown HCI Command (0x01)
Signed-off-by: Sven Peter <sven@svenpeter.dev>
---
no changes since v2
changes from v1:
- adjusted the commit message a bit to make checkpatch happy
include/net/bluetooth/hci.h | 10 ++++++++++
include/net/bluetooth/hci_core.h | 4 +++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 556916110636..75dcd818cf04 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -263,6 +263,16 @@ enum {
* during the hdev->setup vendor callback.
*/
HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN,
+
+ /*
+ * When this quirk is set, the HCI_OP_LE_SET_EXT_SCAN_ENABLE command is
+ * disabled. This is required for some Broadcom controllers which
+ * erroneously claim to support extended scanning.
+ *
+ * This quirk can be set before hci_register_dev is called or
+ * during the hdev->setup vendor callback.
+ */
+ HCI_QUIRK_BROKEN_EXT_SCAN,
};
/* HCI device flags */
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index e7862903187d..29d1254f9856 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1681,7 +1681,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
/* Use ext scanning if set ext scan param and ext scan enable is supported */
#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
- ((dev)->commands[37] & 0x40))
+ ((dev)->commands[37] & 0x40) && \
+ !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
+
/* Use ext create connection if command is supported */
#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
--
2.25.1
next prev parent reply other threads:[~2022-09-19 16:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-19 16:48 [PATCH v3 0/7] Broadcom/Apple Bluetooth driver for Apple Silicon Sven Peter
2022-09-19 16:48 ` [PATCH v3 1/7] dt-bindings: net: Add generic Bluetooth controller Sven Peter
2022-09-26 19:20 ` Rob Herring
2022-09-19 16:48 ` [PATCH v3 2/7] dt-bindings: net: Add Broadcom BCM4377 family PCIe Bluetooth Sven Peter
2022-09-25 15:44 ` Rob Herring
2022-09-19 16:48 ` [PATCH v3 3/7] arm64: dts: apple: t8103: Add Bluetooth controller Sven Peter
2022-09-19 16:48 ` [PATCH v3 4/7] Bluetooth: hci_event: Ignore reserved bits in LE Extended Adv Report Sven Peter
2022-09-19 16:48 ` Sven Peter [this message]
2022-09-19 16:48 ` [PATCH v3 6/7] Bluetooth: Add quirk to disable MWS Transport Configuration Sven Peter
2022-09-19 16:48 ` [PATCH v3 7/7] Bluetooth: hci_bcm4377: Add new driver for BCM4377 PCIe boards Sven Peter
2022-09-19 16:55 ` [PATCH v3 0/7] Broadcom/Apple Bluetooth driver for Apple Silicon Sven Peter
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