@@ -19,6 +19,9 @@
#define MTK_SEC_MAP_COMMON_SIZE 12
#define MTK_SEC_MAP_NEED_SEND_SIZE 52
+/* It is for mt79xx iso data transmission setting */
+#define MTK_ISO_THRESHOLD 264
+
struct btmtk_patch_header {
u8 datetime[16];
u8 platform[4];
@@ -431,6 +434,95 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
}
EXPORT_SYMBOL_GPL(btmtk_process_coredump);
+int btmtk_isointf_setup(struct hci_dev *hdev)
+{
+ u8 iso_param[2] = { 0x08, 0x01 };
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, 0xfd98, sizeof(iso_param), iso_param,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Failed to apply iso setting (%ld)", PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btmtk_isointf_setup);
+
+int btmtk_isopkt_pad(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ if (skb->len > MTK_ISO_THRESHOLD)
+ return -EINVAL;
+
+ if (skb_pad(skb, MTK_ISO_THRESHOLD - skb->len))
+ return -ENOMEM;
+
+ __skb_put(skb, MTK_ISO_THRESHOLD - skb->len);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btmtk_isopkt_pad);
+
+int btmtk_recv_isopkt(struct hci_dev *hdev, void *buffer, int count)
+{
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
+ struct sk_buff *skb;
+ unsigned long flags;
+ int err = 0;
+
+ spin_lock_irqsave(&btmtk_data->isopkt_info.isorxlock, flags);
+ skb = btmtk_data->isopkt_info.isopkt_skb;
+
+ while (count) {
+ int len;
+
+ if (!skb) {
+ skb = bt_skb_alloc(HCI_MAX_ISO_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ err = -ENOMEM;
+ break;
+ }
+
+ hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
+ hci_skb_expect(skb) = HCI_ISO_HDR_SIZE;
+ }
+
+ len = min_t(uint, hci_skb_expect(skb), count);
+ skb_put_data(skb, buffer, len);
+
+ count -= len;
+ buffer += len;
+ hci_skb_expect(skb) -= len;
+
+ if (skb->len == HCI_ISO_HDR_SIZE) {
+ /* Complete ISO header */
+ hci_skb_expect(skb) = hci_iso_hdr(skb)->dlen;
+
+ if (skb_tailroom(skb) < hci_skb_expect(skb)) {
+ kfree_skb(skb);
+ skb = NULL;
+
+ err = -EILSEQ;
+ break;
+ }
+ }
+
+ if (!hci_skb_expect(skb)) {
+ /* Complete frame */
+ hci_recv_frame(hdev, skb);
+ skb = NULL;
+ }
+ }
+
+ btmtk_data->isopkt_info.isopkt_skb = skb;
+ spin_unlock_irqrestore(&btmtk_data->isopkt_info.isorxlock, flags);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btmtk_recv_isopkt);
+
MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
MODULE_AUTHOR("Mark Chen <mark-yw.chen@mediatek.com>");
MODULE_DESCRIPTION("Bluetooth support for MediaTek devices ver " VERSION);
@@ -1,6 +1,8 @@
/* SPDX-License-Identifier: ISC */
/* Copyright (C) 2021 MediaTek Inc. */
+#include <linux/usb.h>
+
#define FIRMWARE_MT7622 "mediatek/mt7622pr2h.bin"
#define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
#define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
@@ -129,6 +131,9 @@ struct btmtk_hci_wmt_params {
typedef int (*btmtk_reset_sync_func_t)(struct hci_dev *, void *);
enum {
+ BTMTK_ISOPKT_OVER_INTR,
+ BTMTK_ISOPKT_RUNNING,
+
__BTMTK_NUM_FLAGS,
};
@@ -139,12 +144,24 @@ struct btmtk_coredump_info {
int state;
};
+struct btmtk_isopkt_info {
+ struct usb_endpoint_descriptor *isopkt_tx_ep;
+ struct usb_endpoint_descriptor *isopkt_rx_ep;
+ struct usb_interface *isopkt_intf;
+ struct usb_anchor isopkt_anchor;
+ struct sk_buff *isopkt_skb;
+
+ /* spinlock for ISO data transmission */
+ spinlock_t isorxlock;
+};
+
struct btmediatek_data {
DECLARE_BITMAP(flags, __BTMTK_NUM_FLAGS);
u32 dev_id;
btmtk_reset_sync_func_t reset_sync;
struct btmtk_coredump_info cd_info;
+ struct btmtk_isopkt_info isopkt_info;
};
#define btmtk_set_flag(hdev, nr) \
@@ -186,6 +203,12 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb);
void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id, u32 fw_ver,
u32 fw_flavor);
+
+int btmtk_isointf_setup(struct hci_dev *hdev);
+
+int btmtk_isopkt_pad(struct hci_dev *hdev, struct sk_buff *skb);
+
+int btmtk_recv_isopkt(struct hci_dev *hdev, void *buffer, int count);
#else
static inline int btmtk_set_bdaddr(struct hci_dev *hdev,
@@ -225,4 +248,19 @@ static void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id,
u32 fw_ver, u32 fw_flavor)
{
}
+
+static int btmtk_isointf_setup(struct hci_dev *hdev)
+{
+ return -EOPNOTSUPP;
+}
+
+static int btmtk_isopkt_pad(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static int btmtk_recv_isopkt(struct hci_dev *hdev, void *buffer, int count)
+{
+ return -EOPNOTSUPP;
+}
#endif
@@ -2653,6 +2653,8 @@ static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
#define MTK_BT_RESET_REG_CONNV3 0x70028610
#define MTK_BT_READ_DEV_ID 0x70010200
+/* MediaTek ISO Interface */
+#define MTK_ISO_IFNUM 2
static void btusb_mtk_wmt_recv(struct urb *urb)
{
@@ -3129,6 +3131,239 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
return err;
}
+static void btusb_mtk_intr_complete(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return;
+
+ if (urb->status == 0) {
+ hdev->stat.byte_rx += urb->actual_length;
+
+ if (btmtk_recv_isopkt(hdev, urb->transfer_buffer,
+ urb->actual_length) < 0) {
+ bt_dev_err(hdev, "corrupted iso packet");
+ hdev->stat.err_rx++;
+ }
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
+ }
+
+ if (!btmtk_test_flag(hdev, BTMTK_ISOPKT_RUNNING))
+ return;
+
+ usb_mark_last_busy(data->udev);
+ usb_anchor_urb(urb, &btmtk_data->isopkt_info.isopkt_anchor);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ /* -EPERM: urb is being killed;
+ * -ENODEV: device got disconnected
+ */
+ if (err != -EPERM && err != -ENODEV)
+ bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
+ urb, -err);
+ if (err != -EPERM)
+ hci_cmd_sync_cancel(hdev, -err);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static int btusb_mtk_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ unsigned char *buf;
+ unsigned int pipe;
+ struct urb *urb;
+ int err, size;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!btmtk_data->isopkt_info.isopkt_rx_ep)
+ return -ENODEV;
+
+ urb = usb_alloc_urb(0, mem_flags);
+ if (!urb)
+ return -ENOMEM;
+ size = le16_to_cpu(btmtk_data->isopkt_info.isopkt_rx_ep->wMaxPacketSize);
+
+ buf = kmalloc(size, mem_flags);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvintpipe(data->udev,
+ btmtk_data->isopkt_info.isopkt_rx_ep->bEndpointAddress);
+
+ usb_fill_int_urb(urb, data->udev, pipe, buf, size,
+ btusb_mtk_intr_complete, hdev,
+ btmtk_data->isopkt_info.isopkt_rx_ep->bInterval);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_mark_last_busy(data->udev);
+ usb_anchor_urb(urb, &btmtk_data->isopkt_info.isopkt_anchor);
+
+ err = usb_submit_urb(urb, mem_flags);
+ if (err < 0) {
+ if (err != -EPERM && err != -ENODEV)
+ bt_dev_err(hdev, "urb %p submission failed (%d)",
+ urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static inline int __set_mtk_intr_interface(struct hci_dev *hdev, unsigned int ifnum)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
+ struct usb_interface *intf = btmtk_data->isopkt_info.isopkt_intf;
+ int i, err;
+
+ if (!btmtk_data->isopkt_info.isopkt_intf)
+ return -ENODEV;
+
+ err = usb_set_interface(data->udev, ifnum, 1);
+ if (err < 0) {
+ bt_dev_err(hdev, "setting interface failed (%d)", -err);
+ return err;
+ }
+
+ btmtk_data->isopkt_info.isopkt_tx_ep = NULL;
+ btmtk_data->isopkt_info.isopkt_rx_ep = NULL;
+
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ struct usb_endpoint_descriptor *ep_desc;
+
+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (!btmtk_data->isopkt_info.isopkt_tx_ep &&
+ usb_endpoint_is_int_out(ep_desc)) {
+ btmtk_data->isopkt_info.isopkt_tx_ep = ep_desc;
+ continue;
+ }
+
+ if (!btmtk_data->isopkt_info.isopkt_rx_ep &&
+ usb_endpoint_is_int_in(ep_desc)) {
+ btmtk_data->isopkt_info.isopkt_rx_ep = ep_desc;
+ continue;
+ }
+ }
+
+ if (!btmtk_data->isopkt_info.isopkt_tx_ep ||
+ !btmtk_data->isopkt_info.isopkt_rx_ep) {
+ bt_dev_err(hdev, "invalid interrupt descriptors");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int btusb_mtk_isopkt_stop(struct hci_dev *hdev)
+{
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
+
+ usb_kill_anchored_urbs(&btmtk_data->isopkt_info.isopkt_anchor);
+
+ return 0;
+}
+
+static int btusb_mtk_isopkt_start(struct hci_dev *hdev)
+{
+ if (btmtk_test_flag(hdev, BTMTK_ISOPKT_RUNNING)) {
+ if (btusb_mtk_submit_intr_urb(hdev, GFP_NOIO) < 0)
+ btmtk_clear_flag(hdev, BTMTK_ISOPKT_RUNNING);
+ }
+
+ return 0;
+}
+
+static int btusb_mtk_claim_iso_intf(struct btusb_data *data, struct usb_interface *intf)
+{
+ struct btmediatek_data *btmtk_data = hci_get_priv(data->hdev);
+ int err;
+
+ err = usb_driver_claim_interface(&btusb_driver, intf, data);
+ if (err < 0)
+ return err;
+
+ init_usb_anchor(&btmtk_data->isopkt_info.isopkt_anchor);
+ spin_lock_init(&btmtk_data->isopkt_info.isorxlock);
+
+ __set_mtk_intr_interface(data->hdev, MTK_ISO_IFNUM);
+
+ err = btusb_mtk_submit_intr_urb(data->hdev, GFP_KERNEL);
+ if (err < 0) {
+ btusb_mtk_isopkt_stop(data->hdev);
+ bt_dev_err(data->hdev, "ISO intf not support (%d)", err);
+ return err;
+ }
+
+ btmtk_set_flag(data->hdev, BTMTK_ISOPKT_OVER_INTR);
+
+ return 0;
+}
+
+static struct urb *alloc_mtk_intr_urb(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
+ unsigned int pipe;
+ struct urb *urb;
+
+ if (!btmtk_data->isopkt_info.isopkt_tx_ep)
+ return ERR_PTR(-ENODEV);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return ERR_PTR(-ENOMEM);
+
+ if (btmtk_isopkt_pad(hdev, skb))
+ return ERR_PTR(-EINVAL);
+
+ pipe = usb_sndintpipe(data->udev,
+ btmtk_data->isopkt_info.isopkt_tx_ep->bEndpointAddress);
+
+ usb_fill_int_urb(urb, data->udev, pipe,
+ skb->data, skb->len, btusb_tx_complete,
+ skb, btmtk_data->isopkt_info.isopkt_tx_ep->bInterval);
+
+ skb->dev = (void *)hdev;
+
+ return urb;
+}
+
+static int btusb_send_frame_mtk(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct urb *urb;
+
+ BT_DBG("%s", hdev->name);
+
+ if (hci_skb_pkt_type(skb) == HCI_ISODATA_PKT) {
+ urb = alloc_mtk_intr_urb(hdev, skb);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ return submit_or_queue_tx_urb(hdev, urb);
+ } else {
+ return btusb_send_frame(hdev, skb);
+ }
+}
+
static int btusb_mtk_setup(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
@@ -3213,6 +3448,12 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
/* It's Device EndPoint Reset Option Register */
btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
+ /* Claim ISO data interface and endpoint */
+ mediatek->isopkt_info.isopkt_intf = usb_ifnum_to_if(data->udev, MTK_ISO_IFNUM);
+ err = btusb_mtk_claim_iso_intf(data, mediatek->isopkt_info.isopkt_intf);
+ if (err < 0)
+ mediatek->isopkt_info.isopkt_intf = NULL;
+
/* Enable Bluetooth protocol */
param = 1;
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
@@ -3229,6 +3470,13 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
hci_set_msft_opcode(hdev, 0xFD30);
hci_set_aosp_capable(hdev);
+
+ /* Set up ISO interface after protocol enabled */
+ if (btmtk_test_flag(hdev, BTMTK_ISOPKT_OVER_INTR)) {
+ btmtk_isointf_setup(hdev);
+ btmtk_set_flag(data->hdev, BTMTK_ISOPKT_RUNNING);
+ }
+
goto done;
default:
bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
@@ -3321,6 +3569,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
static int btusb_mtk_shutdown(struct hci_dev *hdev)
{
struct btmtk_hci_wmt_params wmt_params;
+ struct btmediatek_data *btmtk_data = hci_get_priv(hdev);
u8 param = 0;
int err;
@@ -3337,6 +3586,21 @@ static int btusb_mtk_shutdown(struct hci_dev *hdev)
return err;
}
+ if (btmtk_test_flag(hdev, BTMTK_ISOPKT_RUNNING)) {
+ btusb_mtk_isopkt_stop(hdev);
+ btmtk_clear_flag(hdev, BTMTK_ISOPKT_RUNNING);
+
+ if (btmtk_data->isopkt_info.isopkt_intf) {
+ usb_set_intfdata(btmtk_data->isopkt_info.isopkt_intf, NULL);
+ usb_driver_release_interface(&btusb_driver,
+ btmtk_data->isopkt_info.isopkt_intf);
+ dev_kfree_skb_irq(btmtk_data->isopkt_info.isopkt_skb);
+ btmtk_data->isopkt_info.isopkt_skb = NULL;
+
+ btmtk_clear_flag(hdev, BTMTK_ISOPKT_OVER_INTR);
+ }
+ }
+
return 0;
}
@@ -4475,9 +4739,12 @@ static int btusb_probe(struct usb_interface *intf,
hdev->manufacturer = 70;
hdev->cmd_timeout = btmtk_reset_sync;
hdev->set_bdaddr = btmtk_set_bdaddr;
+ hdev->send = btusb_send_frame_mtk;
set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
data->recv_acl = btusb_recv_acl_mtk;
+ data->dev_suspend = btusb_mtk_isopkt_stop;
+ data->dev_resume = btusb_mtk_isopkt_start;
}
if (id->driver_info & BTUSB_SWAVE) {