mirror of
				https://github.com/torvalds/linux.git
				synced 2025-11-04 10:40:15 +02:00 
			
		
		
		
	Bluetooth: btmtk: move btusb_mtk_hci_wmt_sync to btmtk.c
Move btusb_mtk_hci_wmt_sync from btusb.c to btmtk.c which holds vendor specific stuff and would make btusb.c clean. Add usb.h header to btmtksdio.c/btmtkuart.c for usb related element defined in btmtk.h Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Chris Lu <chris.lu@mediatek.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
		
							parent
							
								
									95f92928ad
								
							
						
					
					
						commit
						d019930b00
					
				
					 5 changed files with 305 additions and 283 deletions
				
			
		| 
						 | 
				
			
			@ -4,6 +4,7 @@
 | 
			
		|||
 */
 | 
			
		||||
#include <linux/module.h>
 | 
			
		||||
#include <linux/firmware.h>
 | 
			
		||||
#include <linux/usb.h>
 | 
			
		||||
 | 
			
		||||
#include <net/bluetooth/bluetooth.h>
 | 
			
		||||
#include <net/bluetooth/hci_core.h>
 | 
			
		||||
| 
						 | 
				
			
			@ -431,6 +432,270 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
 | 
			
		|||
}
 | 
			
		||||
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);
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
| 
						 | 
				
			
			@ -28,6 +28,18 @@
 | 
			
		|||
#define MTK_COREDUMP_END_LEN		(sizeof(MTK_COREDUMP_END))
 | 
			
		||||
#define MTK_COREDUMP_NUM		255
 | 
			
		||||
 | 
			
		||||
/* 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
 | 
			
		||||
 | 
			
		||||
enum {
 | 
			
		||||
	BTMTK_WMT_PATCH_DWNLD = 0x1,
 | 
			
		||||
	BTMTK_WMT_TEST = 0x2,
 | 
			
		||||
| 
						 | 
				
			
			@ -126,6 +138,10 @@ struct btmtk_hci_wmt_params {
 | 
			
		|||
	u32 *status;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
enum {
 | 
			
		||||
	BTMTK_TX_WAIT_VND_EVT,
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
typedef int (*btmtk_reset_sync_func_t)(struct hci_dev *, void *);
 | 
			
		||||
 | 
			
		||||
struct btmtk_coredump_info {
 | 
			
		||||
| 
						 | 
				
			
			@ -136,9 +152,15 @@ struct btmtk_coredump_info {
 | 
			
		|||
};
 | 
			
		||||
 | 
			
		||||
struct btmtk_data {
 | 
			
		||||
	unsigned long flags;
 | 
			
		||||
	u32 dev_id;
 | 
			
		||||
	btmtk_reset_sync_func_t reset_sync;
 | 
			
		||||
	struct btmtk_coredump_info cd_info;
 | 
			
		||||
 | 
			
		||||
	struct usb_device *udev;
 | 
			
		||||
	struct usb_interface *intf;
 | 
			
		||||
	struct usb_anchor *ctrl_anchor;
 | 
			
		||||
	struct sk_buff *evt_skb;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *,
 | 
			
		||||
| 
						 | 
				
			
			@ -163,6 +185,9 @@ 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_usb_hci_wmt_sync(struct hci_dev *hdev,
 | 
			
		||||
			   struct btmtk_hci_wmt_params *wmt_params);
 | 
			
		||||
#else
 | 
			
		||||
 | 
			
		||||
static inline int btmtk_set_bdaddr(struct hci_dev *hdev,
 | 
			
		||||
| 
						 | 
				
			
			@ -202,4 +227,10 @@ static void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id,
 | 
			
		|||
				  u32 fw_ver, u32 fw_flavor)
 | 
			
		||||
{
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static int btmtk_usb_hci_wmt_sync(struct hci_dev *hdev,
 | 
			
		||||
				  struct btmtk_hci_wmt_params *wmt_params)
 | 
			
		||||
{
 | 
			
		||||
	return -EOPNOTSUPP;
 | 
			
		||||
}
 | 
			
		||||
#endif
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
| 
						 | 
				
			
			@ -20,6 +20,7 @@
 | 
			
		|||
#include <linux/of.h>
 | 
			
		||||
#include <linux/pm_runtime.h>
 | 
			
		||||
#include <linux/skbuff.h>
 | 
			
		||||
#include <linux/usb.h>
 | 
			
		||||
 | 
			
		||||
#include <linux/mmc/host.h>
 | 
			
		||||
#include <linux/mmc/sdio_ids.h>
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
| 
						 | 
				
			
			@ -22,6 +22,7 @@
 | 
			
		|||
#include <linux/regulator/consumer.h>
 | 
			
		||||
#include <linux/serdev.h>
 | 
			
		||||
#include <linux/skbuff.h>
 | 
			
		||||
#include <linux/usb.h>
 | 
			
		||||
 | 
			
		||||
#include <net/bluetooth/bluetooth.h>
 | 
			
		||||
#include <net/bluetooth/hci_core.h>
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
| 
						 | 
				
			
			@ -2645,282 +2645,6 @@ static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
 | 
			
		|||
	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;
 | 
			
		||||
| 
						 | 
				
			
			@ -2934,7 +2658,7 @@ static int btusb_mtk_func_query(struct hci_dev *hdev)
 | 
			
		|||
	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;
 | 
			
		||||
| 
						 | 
				
			
			@ -3255,7 +2979,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 | 
			
		|||
				      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);
 | 
			
		||||
| 
						 | 
				
			
			@ -3275,7 +2999,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 | 
			
		|||
		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;
 | 
			
		||||
| 
						 | 
				
			
			@ -3297,7 +3021,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 | 
			
		|||
	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;
 | 
			
		||||
| 
						 | 
				
			
			@ -3310,7 +3034,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 | 
			
		|||
 | 
			
		||||
	/* 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;
 | 
			
		||||
 | 
			
		||||
| 
						 | 
				
			
			@ -3339,7 +3063,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 | 
			
		|||
	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;
 | 
			
		||||
| 
						 | 
				
			
			@ -3385,7 +3109,7 @@ static int btusb_mtk_shutdown(struct hci_dev *hdev)
 | 
			
		|||
	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;
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
		Loading…
	
		Reference in a new issue