| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20210814005024.v8.5.I50ffa4cd0b3ab11669ff2541fc719fee00b4e244@changeid>
Date: Sat, 14 Aug 2021 00:51:48 +0800
From: Joseph Hwang <josephsih@...omium.org>
To: linux-bluetooth@...r.kernel.org, marcel@...tmann.org,
luiz.dentz@...il.com, pali@...nel.org
Cc: chromeos-bluetooth-upstreaming@...omium.org, josephsih@...gle.com,
Joseph Hwang <josephsih@...omium.org>,
Miao-chen Chou <mcchou@...omium.org>,
Johan Hedberg <johan.hedberg@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH v8 5/5] Bluetooth: set quality report callback for Intel
This patch sets up set_quality_report callback for Intel to
set and reset the debug features.
Reviewed-by: Miao-chen Chou <mcchou@...omium.org>
Signed-off-by: Joseph Hwang <josephsih@...omium.org>
---
Changes in v8:
- Removed the unsuitable debug messages.
Changes in v7:
- Rebase on Tedd's patches that moved functionality from btusb to
btintel.
Changes in v5:
- Removed CONFIG_BT_FEATURE_QUALITY_REPORT since there was no
large size impact.
drivers/bluetooth/btintel.c | 79 ++++++++++++++++++++++++++++++++++++-
drivers/bluetooth/btintel.h | 6 +++
2 files changed, 84 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index 643e2194ca01..778d803159f3 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -1291,8 +1291,10 @@ static int btintel_set_debug_features(struct hci_dev *hdev,
u8 trace_enable = 0x02;
struct sk_buff *skb;
- if (!features)
+ if (!features) {
+ bt_dev_warn(hdev, "Debug features not read");
return -EINVAL;
+ }
if (!(features->page1[0] & 0x3f)) {
bt_dev_info(hdev, "Telemetry exception format not supported");
@@ -1323,9 +1325,77 @@ static int btintel_set_debug_features(struct hci_dev *hdev,
}
kfree_skb(skb);
+ bt_dev_info(hdev, "set debug features: trace_enable 0x%02x mask 0x%02x",
+ trace_enable, mask[3]);
+
return 0;
}
+static int btintel_reset_debug_features(struct hci_dev *hdev,
+ const struct intel_debug_features *features)
+{
+ u8 mask[11] = { 0x0a, 0x92, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00 };
+ u8 trace_enable = 0x00;
+ struct sk_buff *skb;
+
+ if (!features) {
+ bt_dev_warn(hdev, "Debug features not read");
+ return -EINVAL;
+ }
+
+ if (!(features->page1[0] & 0x3f)) {
+ bt_dev_info(hdev, "Telemetry exception format not supported");
+ return 0;
+ }
+
+ /* Should stop the trace before writing ddc event mask. */
+ skb = __hci_cmd_sync(hdev, 0xfca1, 1, &trace_enable, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Stop tracing of link statistics events failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ skb = __hci_cmd_sync(hdev, 0xfc8b, 11, mask, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Setting Intel telemetry ddc write event mask failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ bt_dev_info(hdev, "reset debug features: trace_enable 0x%02x mask 0x%02x",
+ trace_enable, mask[3]);
+
+ return 0;
+}
+
+int btintel_set_quality_report(struct hci_dev *hdev, bool enable)
+{
+ struct intel_debug_features features;
+ int err;
+
+ bt_dev_dbg(hdev, "enable %d", enable);
+
+ /* Read the Intel supported features and if new exception formats
+ * supported, need to load the additional DDC config to enable.
+ */
+ err = btintel_read_debug_features(hdev, &features);
+ if (err)
+ return err;
+
+ /* Set or reset the debug features. */
+ if (enable)
+ err = btintel_set_debug_features(hdev, &features);
+ else
+ err = btintel_reset_debug_features(hdev, &features);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btintel_set_quality_report);
+
static const struct firmware *btintel_legacy_rom_get_fw(struct hci_dev *hdev,
struct intel_version *ver)
{
@@ -1951,6 +2021,8 @@ static int btintel_bootloader_setup(struct hci_dev *hdev,
btintel_load_ddc_config(hdev, ddcname);
}
+ hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);
+
/* Read the Intel version information after loading the FW */
err = btintel_read_version(hdev, &new_ver);
if (err)
@@ -2132,6 +2204,8 @@ static int btintel_bootloader_setup_tlv(struct hci_dev *hdev,
*/
btintel_load_ddc_config(hdev, ddcname);
+ hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);
+
/* Read the Intel version information after loading the FW */
err = btintel_read_version_tlv(hdev, &new_ver);
if (err)
@@ -2230,6 +2304,9 @@ static int btintel_setup_combined(struct hci_dev *hdev)
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
+ /* Set up the quality report callback for Intel devices */
+ hdev->set_quality_report = btintel_set_quality_report;
+
/* For Legacy device, check the HW platform value and size */
if (skb->len == sizeof(ver) && skb->data[1] == 0x37) {
bt_dev_dbg(hdev, "Read the legacy Intel version information");
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index aa64072bbe68..fe02cb9ac96c 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -204,6 +204,7 @@ int btintel_configure_setup(struct hci_dev *hdev);
void btintel_bootup(struct hci_dev *hdev, const void *ptr, unsigned int len);
void btintel_secure_send_result(struct hci_dev *hdev,
const void *ptr, unsigned int len);
+int btintel_set_quality_report(struct hci_dev *hdev, bool enable);
#else
static inline int btintel_check_bdaddr(struct hci_dev *hdev)
@@ -294,4 +295,9 @@ static inline void btintel_secure_send_result(struct hci_dev *hdev,
const void *ptr, unsigned int len)
{
}
+
+static inline int btintel_set_quality_report(struct hci_dev *hdev, bool enable)
+{
+ return -ENODEV;
+}
#endif
--
2.33.0.rc1.237.g0d66db33f3-goog
Powered by blists - more mailing lists