*/
#include <linux/module.h>
#include <linux/firmware.h>
+#include <linux/usb.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
}
EXPORT_SYMBOL_GPL(btmtk_process_coredump);
+static void btmtk_usb_wmt_recv(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct btmtk_data *data = hci_get_priv(hdev);
+ struct sk_buff *skb;
+ int err;
+
+ if (urb->status == 0 && urb->actual_length > 0) {
+ hdev->stat.byte_rx += urb->actual_length;
+
+ /* WMT event shouldn't be fragmented and the size should be
+ * less than HCI_WMT_MAX_EVENT_SIZE.
+ */
+ skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ hdev->stat.err_rx++;
+ kfree(urb->setup_packet);
+ return;
+ }
+
+ hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
+ skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
+
+ /* When someone waits for the WMT event, the skb is being cloned
+ * and being processed the events from there then.
+ */
+ if (test_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags)) {
+ data->evt_skb = skb_clone(skb, GFP_ATOMIC);
+ if (!data->evt_skb) {
+ kfree_skb(skb);
+ kfree(urb->setup_packet);
+ return;
+ }
+ }
+
+ err = hci_recv_frame(hdev, skb);
+ if (err < 0) {
+ kfree_skb(data->evt_skb);
+ data->evt_skb = NULL;
+ kfree(urb->setup_packet);
+ return;
+ }
+
+ if (test_and_clear_bit(BTMTK_TX_WAIT_VND_EVT,
+ &data->flags)) {
+ /* Barrier to sync with other CPUs */
+ smp_mb__after_atomic();
+ wake_up_bit(&data->flags,
+ BTMTK_TX_WAIT_VND_EVT);
+ }
+ kfree(urb->setup_packet);
+ return;
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
+ }
+
+ usb_mark_last_busy(data->udev);
+
+ /* The URB complete handler is still called with urb->actual_length = 0
+ * when the event is not available, so we should keep re-submitting
+ * URB until WMT event returns, Also, It's necessary to wait some time
+ * between the two consecutive control URBs to relax the target device
+ * to generate the event. Otherwise, the WMT event cannot return from
+ * the device successfully.
+ */
+ udelay(500);
+
+ usb_anchor_urb(urb, data->ctrl_anchor);
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ kfree(urb->setup_packet);
+ /* -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);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static int btmtk_usb_submit_wmt_recv_urb(struct hci_dev *hdev)
+{
+ struct btmtk_data *data = hci_get_priv(hdev);
+ struct usb_ctrlrequest *dr;
+ unsigned char *buf;
+ int err, size = 64;
+ unsigned int pipe;
+ struct urb *urb;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return -ENOMEM;
+
+ dr = kmalloc(sizeof(*dr), GFP_KERNEL);
+ if (!dr) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
+ dr->bRequest = 1;
+ dr->wIndex = cpu_to_le16(0);
+ dr->wValue = cpu_to_le16(48);
+ dr->wLength = cpu_to_le16(size);
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf) {
+ kfree(dr);
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvctrlpipe(data->udev, 0);
+
+ usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
+ buf, size, btmtk_usb_wmt_recv, hdev);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_anchor_urb(urb, data->ctrl_anchor);
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ 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;
+}
+
+int btmtk_usb_hci_wmt_sync(struct hci_dev *hdev,
+ struct btmtk_hci_wmt_params *wmt_params)
+{
+ struct btmtk_data *data = hci_get_priv(hdev);
+ struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
+ u32 hlen, status = BTMTK_WMT_INVALID;
+ struct btmtk_hci_wmt_evt *wmt_evt;
+ struct btmtk_hci_wmt_cmd *wc;
+ struct btmtk_wmt_hdr *hdr;
+ int err;
+
+ /* Send the WMT command and wait until the WMT event returns */
+ hlen = sizeof(*hdr) + wmt_params->dlen;
+ if (hlen > 255)
+ return -EINVAL;
+
+ wc = kzalloc(hlen, GFP_KERNEL);
+ if (!wc)
+ return -ENOMEM;
+
+ hdr = &wc->hdr;
+ hdr->dir = 1;
+ hdr->op = wmt_params->op;
+ hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
+ hdr->flag = wmt_params->flag;
+ memcpy(wc->data, wmt_params->data, wmt_params->dlen);
+
+ set_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags);
+
+ /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
+ * it needs constantly polling control pipe until the host received the
+ * WMT event, thus, we should require to specifically acquire PM counter
+ * on the USB to prevent the interface from entering auto suspended
+ * while WMT cmd/event in progress.
+ */
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ goto err_free_wc;
+
+ err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
+
+ if (err < 0) {
+ clear_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags);
+ usb_autopm_put_interface(data->intf);
+ goto err_free_wc;
+ }
+
+ /* Submit control IN URB on demand to process the WMT event */
+ err = btmtk_usb_submit_wmt_recv_urb(hdev);
+
+ usb_autopm_put_interface(data->intf);
+
+ if (err < 0)
+ goto err_free_wc;
+
+ /* The vendor specific WMT commands are all answered by a vendor
+ * specific event and will have the Command Status or Command
+ * Complete as with usual HCI command flow control.
+ *
+ * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
+ * state to be cleared. The driver specific event receive routine
+ * will clear that state and with that indicate completion of the
+ * WMT command.
+ */
+ err = wait_on_bit_timeout(&data->flags, BTMTK_TX_WAIT_VND_EVT,
+ TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
+ if (err == -EINTR) {
+ bt_dev_err(hdev, "Execution of wmt command interrupted");
+ clear_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags);
+ goto err_free_wc;
+ }
+
+ if (err) {
+ bt_dev_err(hdev, "Execution of wmt command timed out");
+ clear_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags);
+ err = -ETIMEDOUT;
+ goto err_free_wc;
+ }
+
+ if (data->evt_skb == NULL)
+ goto err_free_wc;
+
+ /* Parse and handle the return WMT event */
+ wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
+ if (wmt_evt->whdr.op != hdr->op) {
+ bt_dev_err(hdev, "Wrong op received %d expected %d",
+ wmt_evt->whdr.op, hdr->op);
+ err = -EIO;
+ goto err_free_skb;
+ }
+
+ switch (wmt_evt->whdr.op) {
+ case BTMTK_WMT_SEMAPHORE:
+ if (wmt_evt->whdr.flag == 2)
+ status = BTMTK_WMT_PATCH_UNDONE;
+ else
+ status = BTMTK_WMT_PATCH_DONE;
+ break;
+ case BTMTK_WMT_FUNC_CTRL:
+ wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
+ if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
+ status = BTMTK_WMT_ON_DONE;
+ else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
+ status = BTMTK_WMT_ON_PROGRESS;
+ else
+ status = BTMTK_WMT_ON_UNDONE;
+ break;
+ case BTMTK_WMT_PATCH_DWNLD:
+ if (wmt_evt->whdr.flag == 2)
+ status = BTMTK_WMT_PATCH_DONE;
+ else if (wmt_evt->whdr.flag == 1)
+ status = BTMTK_WMT_PATCH_PROGRESS;
+ else
+ status = BTMTK_WMT_PATCH_UNDONE;
+ break;
+ }
+
+ if (wmt_params->status)
+ *wmt_params->status = status;
+
+err_free_skb:
+ kfree_skb(data->evt_skb);
+ data->evt_skb = NULL;
+err_free_wc:
+ kfree(wc);
+ return err;
+}
+EXPORT_SYMBOL_GPL(btmtk_usb_hci_wmt_sync);
+
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);
return hci_recv_frame(hdev, skb);
}
-/* UHW CR mapping */
-#define MTK_BT_MISC 0x70002510
-#define MTK_BT_SUBSYS_RST 0x70002610
-#define MTK_UDMA_INT_STA_BT 0x74000024
-#define MTK_UDMA_INT_STA_BT1 0x74000308
-#define MTK_BT_WDT_STATUS 0x740003A0
-#define MTK_EP_RST_OPT 0x74011890
-#define MTK_EP_RST_IN_OUT_OPT 0x00010001
-#define MTK_BT_RST_DONE 0x00000100
-#define MTK_BT_RESET_REG_CONNV3 0x70028610
-#define MTK_BT_READ_DEV_ID 0x70010200
-
-
-static void btusb_mtk_wmt_recv(struct urb *urb)
-{
- struct hci_dev *hdev = urb->context;
- struct btusb_data *data = hci_get_drvdata(hdev);
- struct sk_buff *skb;
- int err;
-
- if (urb->status == 0 && urb->actual_length > 0) {
- hdev->stat.byte_rx += urb->actual_length;
-
- /* WMT event shouldn't be fragmented and the size should be
- * less than HCI_WMT_MAX_EVENT_SIZE.
- */
- skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
- if (!skb) {
- hdev->stat.err_rx++;
- kfree(urb->setup_packet);
- return;
- }
-
- hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
- skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
-
- /* When someone waits for the WMT event, the skb is being cloned
- * and being processed the events from there then.
- */
- if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
- data->evt_skb = skb_clone(skb, GFP_ATOMIC);
- if (!data->evt_skb) {
- kfree_skb(skb);
- kfree(urb->setup_packet);
- return;
- }
- }
-
- err = hci_recv_frame(hdev, skb);
- if (err < 0) {
- kfree_skb(data->evt_skb);
- data->evt_skb = NULL;
- kfree(urb->setup_packet);
- return;
- }
-
- if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
- &data->flags)) {
- /* Barrier to sync with other CPUs */
- smp_mb__after_atomic();
- wake_up_bit(&data->flags,
- BTUSB_TX_WAIT_VND_EVT);
- }
- kfree(urb->setup_packet);
- return;
- } else if (urb->status == -ENOENT) {
- /* Avoid suspend failed when usb_kill_urb */
- return;
- }
-
- usb_mark_last_busy(data->udev);
-
- /* The URB complete handler is still called with urb->actual_length = 0
- * when the event is not available, so we should keep re-submitting
- * URB until WMT event returns, Also, It's necessary to wait some time
- * between the two consecutive control URBs to relax the target device
- * to generate the event. Otherwise, the WMT event cannot return from
- * the device successfully.
- */
- udelay(500);
-
- usb_anchor_urb(urb, &data->ctrl_anchor);
- err = usb_submit_urb(urb, GFP_ATOMIC);
- if (err < 0) {
- kfree(urb->setup_packet);
- /* -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);
- usb_unanchor_urb(urb);
- }
-}
-
-static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
-{
- struct btusb_data *data = hci_get_drvdata(hdev);
- struct usb_ctrlrequest *dr;
- unsigned char *buf;
- int err, size = 64;
- unsigned int pipe;
- struct urb *urb;
-
- urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb)
- return -ENOMEM;
-
- dr = kmalloc(sizeof(*dr), GFP_KERNEL);
- if (!dr) {
- usb_free_urb(urb);
- return -ENOMEM;
- }
-
- dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
- dr->bRequest = 1;
- dr->wIndex = cpu_to_le16(0);
- dr->wValue = cpu_to_le16(48);
- dr->wLength = cpu_to_le16(size);
-
- buf = kmalloc(size, GFP_KERNEL);
- if (!buf) {
- kfree(dr);
- usb_free_urb(urb);
- return -ENOMEM;
- }
-
- pipe = usb_rcvctrlpipe(data->udev, 0);
-
- usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
- buf, size, btusb_mtk_wmt_recv, hdev);
-
- urb->transfer_flags |= URB_FREE_BUFFER;
-
- usb_anchor_urb(urb, &data->ctrl_anchor);
- err = usb_submit_urb(urb, GFP_KERNEL);
- 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 int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
- struct btmtk_hci_wmt_params *wmt_params)
-{
- struct btusb_data *data = hci_get_drvdata(hdev);
- struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
- u32 hlen, status = BTMTK_WMT_INVALID;
- struct btmtk_hci_wmt_evt *wmt_evt;
- struct btmtk_hci_wmt_cmd *wc;
- struct btmtk_wmt_hdr *hdr;
- int err;
-
- /* Send the WMT command and wait until the WMT event returns */
- hlen = sizeof(*hdr) + wmt_params->dlen;
- if (hlen > 255)
- return -EINVAL;
-
- wc = kzalloc(hlen, GFP_KERNEL);
- if (!wc)
- return -ENOMEM;
-
- hdr = &wc->hdr;
- hdr->dir = 1;
- hdr->op = wmt_params->op;
- hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
- hdr->flag = wmt_params->flag;
- memcpy(wc->data, wmt_params->data, wmt_params->dlen);
-
- set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
-
- /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
- * it needs constantly polling control pipe until the host received the
- * WMT event, thus, we should require to specifically acquire PM counter
- * on the USB to prevent the interface from entering auto suspended
- * while WMT cmd/event in progress.
- */
- err = usb_autopm_get_interface(data->intf);
- if (err < 0)
- goto err_free_wc;
-
- err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
-
- if (err < 0) {
- clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
- usb_autopm_put_interface(data->intf);
- goto err_free_wc;
- }
-
- /* Submit control IN URB on demand to process the WMT event */
- err = btusb_mtk_submit_wmt_recv_urb(hdev);
-
- usb_autopm_put_interface(data->intf);
-
- if (err < 0)
- goto err_free_wc;
-
- /* The vendor specific WMT commands are all answered by a vendor
- * specific event and will have the Command Status or Command
- * Complete as with usual HCI command flow control.
- *
- * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
- * state to be cleared. The driver specific event receive routine
- * will clear that state and with that indicate completion of the
- * WMT command.
- */
- err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
- TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
- if (err == -EINTR) {
- bt_dev_err(hdev, "Execution of wmt command interrupted");
- clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
- goto err_free_wc;
- }
-
- if (err) {
- bt_dev_err(hdev, "Execution of wmt command timed out");
- clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
- err = -ETIMEDOUT;
- goto err_free_wc;
- }
-
- if (data->evt_skb == NULL)
- goto err_free_wc;
-
- /* Parse and handle the return WMT event */
- wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
- if (wmt_evt->whdr.op != hdr->op) {
- bt_dev_err(hdev, "Wrong op received %d expected %d",
- wmt_evt->whdr.op, hdr->op);
- err = -EIO;
- goto err_free_skb;
- }
-
- switch (wmt_evt->whdr.op) {
- case BTMTK_WMT_SEMAPHORE:
- if (wmt_evt->whdr.flag == 2)
- status = BTMTK_WMT_PATCH_UNDONE;
- else
- status = BTMTK_WMT_PATCH_DONE;
- break;
- case BTMTK_WMT_FUNC_CTRL:
- wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
- if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
- status = BTMTK_WMT_ON_DONE;
- else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
- status = BTMTK_WMT_ON_PROGRESS;
- else
- status = BTMTK_WMT_ON_UNDONE;
- break;
- case BTMTK_WMT_PATCH_DWNLD:
- if (wmt_evt->whdr.flag == 2)
- status = BTMTK_WMT_PATCH_DONE;
- else if (wmt_evt->whdr.flag == 1)
- status = BTMTK_WMT_PATCH_PROGRESS;
- else
- status = BTMTK_WMT_PATCH_UNDONE;
- break;
- }
-
- if (wmt_params->status)
- *wmt_params->status = status;
-
-err_free_skb:
- kfree_skb(data->evt_skb);
- data->evt_skb = NULL;
-err_free_wc:
- kfree(wc);
- return err;
-}
-
static int btusb_mtk_func_query(struct hci_dev *hdev)
{
struct btmtk_hci_wmt_params wmt_params;
wmt_params.data = ¶m;
wmt_params.status = &status;
- err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
+ err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to query function status (%d)", err);
return err;
fw_version, fw_flavor);
err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
- btusb_mtk_hci_wmt_sync);
+ btmtk_usb_hci_wmt_sync);
if (err < 0) {
bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
clear_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
wmt_params.data = ¶m;
wmt_params.status = NULL;
- err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
+ err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
wmt_params.data = NULL;
wmt_params.status = &status;
- err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
+ err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
return err;
/* Setup a firmware which the device definitely requires */
err = btmtk_setup_firmware(hdev, fwname,
- btusb_mtk_hci_wmt_sync);
+ btmtk_usb_hci_wmt_sync);
if (err < 0)
return err;
wmt_params.data = ¶m;
wmt_params.status = NULL;
- err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
+ err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
wmt_params.data = ¶m;
wmt_params.status = NULL;
- err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
+ err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
projects / linux-block.git / commitdiff