Example #1
0
static void usb_log_enable(struct es1_ap_dev *es1)
{
	if (!IS_ERR_OR_NULL(apb1_log_task))
		return;

	/* get log from APB1 */
	apb1_log_task = kthread_run(apb1_log_poll, es1, "apb1_log");
	if (IS_ERR(apb1_log_task))
		return;
	apb1_log_dentry = debugfs_create_file("apb1_log", S_IRUGO,
						gb_debugfs_get(), NULL,
						&apb1_log_fops);
}
Example #2
0
static void usb_log_enable(struct es2_ap_dev *es2)
{
	if (!IS_ERR_OR_NULL(es2->apb_log_task))
		return;

	/* get log from APB1 */
	es2->apb_log_task = kthread_run(apb_log_poll, es2, "apb_log");
	if (IS_ERR(es2->apb_log_task))
		return;
	/* XXX We will need to rename this per APB */
	es2->apb_log_dentry = debugfs_create_file("apb_log", S_IRUGO,
						gb_debugfs_get(), es2,
						&apb_log_fops);
}
Example #3
0
/*
 * The ES2 USB Bridge device has 15 endpoints
 * 1 Control - usual USB stuff + AP -> APBridgeA messages
 * 7 Bulk IN - CPort data in
 * 7 Bulk OUT - CPort data out
 */
static int ap_probe(struct usb_interface *interface,
		    const struct usb_device_id *id)
{
	struct es2_ap_dev *es2;
	struct gb_host_device *hd;
	struct usb_device *udev;
	struct usb_host_interface *iface_desc;
	struct usb_endpoint_descriptor *endpoint;
	int bulk_in = 0;
	int bulk_out = 0;
	int retval = -ENOMEM;
	int i;
	int num_cports;
	int cport_id;

	udev = usb_get_dev(interface_to_usbdev(interface));

	num_cports = apb_get_cport_count(udev);
	if (num_cports < 0) {
		usb_put_dev(udev);
		dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
			num_cports);
		return num_cports;
	}

	hd = gb_hd_create(&es2_driver, &udev->dev, ES2_GBUF_MSG_SIZE_MAX,
				num_cports);
	if (IS_ERR(hd)) {
		usb_put_dev(udev);
		return PTR_ERR(hd);
	}

	/*
	 * CPorts 16 and 17 are reserved for CDSI0 and CDSI1, make sure they
	 * won't be allocated dynamically.
	 */
	do {
		cport_id = ida_simple_get(&hd->cport_id_map, 16, 18, GFP_KERNEL);
	} while (cport_id > 0);

	es2 = hd_to_es2(hd);
	es2->hd = hd;
	es2->usb_intf = interface;
	es2->usb_dev = udev;
	spin_lock_init(&es2->cport_out_urb_lock);
	INIT_KFIFO(es2->apb_log_fifo);
	usb_set_intfdata(interface, es2);

	es2->cport_to_ep = kcalloc(hd->num_cports, sizeof(*es2->cport_to_ep),
				   GFP_KERNEL);
	if (!es2->cport_to_ep) {
		retval = -ENOMEM;
		goto error;
	}

	/* find all bulk endpoints */
	iface_desc = interface->cur_altsetting;
	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
		endpoint = &iface_desc->endpoint[i].desc;

		if (usb_endpoint_is_bulk_in(endpoint)) {
			es2->cport_in[bulk_in++].endpoint =
				endpoint->bEndpointAddress;
		} else if (usb_endpoint_is_bulk_out(endpoint)) {
			es2->cport_out[bulk_out++].endpoint =
				endpoint->bEndpointAddress;
		} else {
			dev_err(&udev->dev,
				"Unknown endpoint type found, address 0x%02x\n",
				endpoint->bEndpointAddress);
		}
	}
	if (bulk_in != NUM_BULKS || bulk_out != NUM_BULKS) {
		dev_err(&udev->dev, "Not enough endpoints found in device, aborting!\n");
		goto error;
	}

	/* Allocate buffers for our cport in messages */
	for (bulk_in = 0; bulk_in < NUM_BULKS; bulk_in++) {
		struct es2_cport_in *cport_in = &es2->cport_in[bulk_in];

		for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
			struct urb *urb;
			u8 *buffer;

			urb = usb_alloc_urb(0, GFP_KERNEL);
			if (!urb)
				goto error;
			buffer = kmalloc(ES2_GBUF_MSG_SIZE_MAX, GFP_KERNEL);
			if (!buffer)
				goto error;

			usb_fill_bulk_urb(urb, udev,
					  usb_rcvbulkpipe(udev,
							  cport_in->endpoint),
					  buffer, ES2_GBUF_MSG_SIZE_MAX,
					  cport_in_callback, hd);
			cport_in->urb[i] = urb;
			cport_in->buffer[i] = buffer;
		}
	}

	/* Allocate urbs for our CPort OUT messages */
	for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
		struct urb *urb;

		urb = usb_alloc_urb(0, GFP_KERNEL);
		if (!urb)
			goto error;

		es2->cport_out_urb[i] = urb;
		es2->cport_out_urb_busy[i] = false;	/* just to be anal */
	}

	/* XXX We will need to rename this per APB */
	es2->apb_log_enable_dentry = debugfs_create_file("apb_log_enable",
							(S_IWUSR | S_IRUGO),
							gb_debugfs_get(), es2,
							&apb_log_enable_fops);

	retval = gb_hd_add(hd);
	if (retval)
		goto error;

	for (i = 0; i < NUM_BULKS; ++i) {
		retval = es2_cport_in_enable(es2, &es2->cport_in[i]);
		if (retval)
			goto err_disable_cport_in;
	}

	return 0;

err_disable_cport_in:
	for (--i; i >= 0; --i)
		es2_cport_in_disable(es2, &es2->cport_in[i]);
	gb_hd_del(hd);
error:
	es2_destroy(es2);

	return retval;
}
Example #4
0
/*
 * The ES1 USB Bridge device contains 4 endpoints
 * 1 Control - usual USB stuff + AP -> SVC messages
 * 1 Interrupt IN - SVC -> AP messages
 * 1 Bulk IN - CPort data in
 * 1 Bulk OUT - CPort data out
 */
static int ap_probe(struct usb_interface *interface,
		    const struct usb_device_id *id)
{
	struct es1_ap_dev *es1;
	struct greybus_host_device *hd;
	struct usb_device *udev;
	struct usb_host_interface *iface_desc;
	struct usb_endpoint_descriptor *endpoint;
	int bulk_in = 0;
	int bulk_out = 0;
	int retval = -ENOMEM;
	int i;
	int num_cports;

	udev = usb_get_dev(interface_to_usbdev(interface));

	num_cports = apb1_get_cport_count(udev);
	if (num_cports < 0) {
		usb_put_dev(udev);
		dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
			num_cports);
		return num_cports;
	}

	hd = greybus_create_hd(&es1_driver, &udev->dev, ES1_GBUF_MSG_SIZE_MAX,
			       num_cports);
	if (IS_ERR(hd)) {
		usb_put_dev(udev);
		return PTR_ERR(hd);
	}

	es1 = hd_to_es1(hd);
	es1->hd = hd;
	es1->usb_intf = interface;
	es1->usb_dev = udev;
	spin_lock_init(&es1->cport_out_urb_lock);
	usb_set_intfdata(interface, es1);

	es1->cport_to_ep = kcalloc(hd->num_cports, sizeof(*es1->cport_to_ep),
				   GFP_KERNEL);
	if (!es1->cport_to_ep) {
		retval = -ENOMEM;
		goto error;
	}

	/* find all 3 of our endpoints */
	iface_desc = interface->cur_altsetting;
	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
		endpoint = &iface_desc->endpoint[i].desc;

		if (usb_endpoint_is_bulk_in(endpoint)) {
			es1->cport_in[bulk_in++].endpoint =
				endpoint->bEndpointAddress;
		} else if (usb_endpoint_is_bulk_out(endpoint)) {
			es1->cport_out[bulk_out++].endpoint =
				endpoint->bEndpointAddress;
		} else {
			dev_err(&udev->dev,
				"Unknown endpoint type found, address %x\n",
				endpoint->bEndpointAddress);
		}
	}
	if ((bulk_in == 0) ||
	    (bulk_out == 0)) {
		dev_err(&udev->dev, "Not enough endpoints found in device, aborting!\n");
		goto error;
	}

	/* Allocate buffers for our cport in messages and start them up */
	for (bulk_in = 0; bulk_in < NUM_BULKS; bulk_in++) {
		struct es1_cport_in *cport_in = &es1->cport_in[bulk_in];
		for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
			struct urb *urb;
			u8 *buffer;

			urb = usb_alloc_urb(0, GFP_KERNEL);
			if (!urb)
				goto error;
			buffer = kmalloc(ES1_GBUF_MSG_SIZE_MAX, GFP_KERNEL);
			if (!buffer)
				goto error;

			usb_fill_bulk_urb(urb, udev,
					  usb_rcvbulkpipe(udev,
							  cport_in->endpoint),
					  buffer, ES1_GBUF_MSG_SIZE_MAX,
					  cport_in_callback, hd);
			cport_in->urb[i] = urb;
			cport_in->buffer[i] = buffer;
			retval = usb_submit_urb(urb, GFP_KERNEL);
			if (retval)
				goto error;
		}
	}

	/* Allocate urbs for our CPort OUT messages */
	for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
		struct urb *urb;

		urb = usb_alloc_urb(0, GFP_KERNEL);
		if (!urb)
			goto error;

		es1->cport_out_urb[i] = urb;
		es1->cport_out_urb_busy[i] = false;	/* just to be anal */
	}

	apb1_log_enable_dentry = debugfs_create_file("apb1_log_enable",
							(S_IWUSR | S_IRUGO),
							gb_debugfs_get(), es1,
							&apb1_log_enable_fops);
	return 0;
error:
	ap_disconnect(interface);

	return retval;
}