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usb: gadget: dummy_hcd: add SuperSpeed support

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This patch adds SS support to the dummy hcd module.
It may be used to test SS device when no (SS) HW is
available.

USB 3.0 hub includes 2 hubs - one HS and one SS. This
patch adds support for a SS root hub in the dummy_hcd
module.

A new module parameter was added: is_super_speed. When
set to true, a SS root hub will also be registered and
the connected device will be enumerated over the SS
root hub. The default of this parameter is false.

Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>

[ balbi@ti.com : slight change to commit log
		 fixed one coding style issue ]

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Tatyana Brokhman 2011-06-29 16:41:52 +03:00 committed by Greg Kroah-Hartman
parent cdfcbd2c4a
commit 1cd8fd2887
2 changed files with 476 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/usb/gadget/Kconfig
View File

@ -631,6 +631,7 @@ config USB_GADGET_DUMMY_HCD
boolean "Dummy HCD (DEVELOPMENT)"
depends on USB=y || (USB=m && USB_GADGET=m)
select USB_GADGET_DUALSPEED
select USB_GADGET_SUPERSPEED
help
This host controller driver emulates USB, looping all data transfer
requests back to a USB "gadget driver" in the same host. The host

562
drivers/usb/gadget/dummy_hcd.c
View File

@ -70,6 +70,15 @@ MODULE_DESCRIPTION (DRIVER_DESC);
MODULE_AUTHOR ("David Brownell");
MODULE_LICENSE ("GPL");
struct dummy_hcd_module_parameters {
bool is_super_speed;
};
static struct dummy_hcd_module_parameters mod_data = {
.is_super_speed = false
};
module_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO);
MODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection");
/*-------------------------------------------------------------------------*/
/* gadget side driver data structres */
@ -188,6 +197,7 @@ struct dummy {
* MASTER/HOST side support
*/
struct dummy_hcd *hs_hcd;
struct dummy_hcd *ss_hcd;
};
static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd)
@ -218,7 +228,10 @@ static inline struct dummy *ep_to_dummy (struct dummy_ep *ep)
static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget)
{
struct dummy *dum = container_of(gadget, struct dummy, gadget);
return dum->hs_hcd;
if (dum->gadget.speed == USB_SPEED_SUPER)
return dum->ss_hcd;
else
return dum->hs_hcd;
}
static inline struct dummy *gadget_dev_to_dummy (struct device *dev)
@ -266,60 +279,117 @@ stop_activity (struct dummy *dum)
/* driver now does any non-usb quiescing necessary */
}
/**
* set_link_state_by_speed() - Sets the current state of the link according to
* the hcd speed
* @dum_hcd: pointer to the dummy_hcd structure to update the link state for
*
* This function updates the port_status according to the link state and the
* speed of the hcd.
*/
static void set_link_state_by_speed(struct dummy_hcd *dum_hcd)
{
struct dummy *dum = dum_hcd->dum;
if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) {
if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) {
dum_hcd->port_status = 0;
} else if (!dum->pullup || dum->udc_suspended) {
/* UDC suspend must cause a disconnect */
dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION |
USB_PORT_STAT_ENABLE);
if ((dum_hcd->old_status &
USB_PORT_STAT_CONNECTION) != 0)
dum_hcd->port_status |=
(USB_PORT_STAT_C_CONNECTION << 16);
} else {
/* device is connected and not suspended */
dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION |
USB_PORT_STAT_SPEED_5GBPS) ;
if ((dum_hcd->old_status &
USB_PORT_STAT_CONNECTION) == 0)
dum_hcd->port_status |=
(USB_PORT_STAT_C_CONNECTION << 16);
if ((dum_hcd->port_status &
USB_PORT_STAT_ENABLE) == 1 &&
(dum_hcd->port_status &
USB_SS_PORT_LS_U0) == 1 &&
dum_hcd->rh_state != DUMMY_RH_SUSPENDED)
dum_hcd->active = 1;
}
} else {
if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) {
dum_hcd->port_status = 0;
} else if (!dum->pullup || dum->udc_suspended) {
/* UDC suspend must cause a disconnect */
dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION |
USB_PORT_STAT_ENABLE |
USB_PORT_STAT_LOW_SPEED |
USB_PORT_STAT_HIGH_SPEED |
USB_PORT_STAT_SUSPEND);
if ((dum_hcd->old_status &
USB_PORT_STAT_CONNECTION) != 0)
dum_hcd->port_status |=
(USB_PORT_STAT_C_CONNECTION << 16);
} else {
dum_hcd->port_status |= USB_PORT_STAT_CONNECTION;
if ((dum_hcd->old_status &
USB_PORT_STAT_CONNECTION) == 0)
dum_hcd->port_status |=
(USB_PORT_STAT_C_CONNECTION << 16);
if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0)
dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND;
else if ((dum_hcd->port_status &
USB_PORT_STAT_SUSPEND) == 0 &&
dum_hcd->rh_state != DUMMY_RH_SUSPENDED)
dum_hcd->active = 1;
}
}
}
/* caller must hold lock */
static void set_link_state(struct dummy_hcd *dum_hcd)
{
struct dummy *dum = dum_hcd->dum;
dum_hcd->active = 0;
if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0)
dum_hcd->port_status = 0;
if (dum->pullup)
if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 &&
dum->gadget.speed != USB_SPEED_SUPER) ||
(dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 &&
dum->gadget.speed == USB_SPEED_SUPER))
return;
/* UDC suspend must cause a disconnect */
else if (!dum->pullup || dum->udc_suspended) {
dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION |
USB_PORT_STAT_ENABLE |
USB_PORT_STAT_LOW_SPEED |
USB_PORT_STAT_HIGH_SPEED |
USB_PORT_STAT_SUSPEND);
if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0)
dum_hcd->port_status |=
(USB_PORT_STAT_C_CONNECTION << 16);
} else {
dum_hcd->port_status |= USB_PORT_STAT_CONNECTION;
if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) == 0)
dum_hcd->port_status |=
(USB_PORT_STAT_C_CONNECTION << 16);
if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0)
dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND;
else if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 &&
dum_hcd->rh_state != DUMMY_RH_SUSPENDED)
dum_hcd->active = 1;
}
set_link_state_by_speed(dum_hcd);
if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 ||
dum_hcd->active)
dum_hcd->resuming = 0;
/* if !connected or reset */
if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 ||
(dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) {
/*
* We're connected and not reset (reset occurred now),
* and driver attached - disconnect!
*/
if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 &&
(dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 &&
dum->driver) {
stop_activity (dum);
spin_unlock (&dum->lock);
dum->driver->disconnect (&dum->gadget);
spin_lock (&dum->lock);
(dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 &&
dum->driver) {
stop_activity(dum);
spin_unlock(&dum->lock);
dum->driver->disconnect(&dum->gadget);
spin_lock(&dum->lock);
}
} else if (dum_hcd->active != dum_hcd->old_active) {
if (dum_hcd->old_active && dum->driver->suspend) {
spin_unlock (&dum->lock);
dum->driver->suspend (&dum->gadget);
spin_lock (&dum->lock);
} else if (!dum_hcd->old_active && dum->driver->resume) {
spin_unlock (&dum->lock);
dum->driver->resume (&dum->gadget);
spin_lock (&dum->lock);
spin_unlock(&dum->lock);
dum->driver->suspend(&dum->gadget);
spin_lock(&dum->lock);
} else if (!dum_hcd->old_active && dum->driver->resume) {
spin_unlock(&dum->lock);
dum->driver->resume(&dum->gadget);
spin_lock(&dum->lock);
}
}
@ -355,13 +425,17 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
dum = ep_to_dummy (ep);
if (!dum->driver)
return -ESHUTDOWN;
dum_hcd = dum->hs_hcd;
if (dum->gadget.speed == USB_SPEED_SUPER)
dum_hcd = dum->ss_hcd;
else
dum_hcd = dum->hs_hcd;
if (!is_enabled(dum_hcd))
return -ESHUTDOWN;
/*
* For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the
* maximum packet size.
* For SS devices the wMaxPacketSize is limited by 1024.
*/
max = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
@ -381,6 +455,10 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
goto done;
}
switch (dum->gadget.speed) {
case USB_SPEED_SUPER:
if (max == 1024)
break;
goto done;
case USB_SPEED_HIGH:
if (max == 512)
break;
@ -399,6 +477,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
goto done;
/* real hardware might not handle all packet sizes */
switch (dum->gadget.speed) {
case USB_SPEED_SUPER:
case USB_SPEED_HIGH:
if (max <= 1024)
break;
@ -419,6 +498,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
goto done;
/* real hardware might not handle all packet sizes */
switch (dum->gadget.speed) {
case USB_SPEED_SUPER:
case USB_SPEED_HIGH:
if (max <= 1024)
break;
@ -547,7 +627,10 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req,
return -EINVAL;
dum = ep_to_dummy (ep);
dum_hcd = dum->hs_hcd;
if (dum->gadget.speed == USB_SPEED_SUPER)
dum_hcd = dum->ss_hcd;
else
dum_hcd = dum->hs_hcd;
if (!dum->driver || !is_enabled(dum_hcd))
return -ESHUTDOWN;
@ -733,9 +816,12 @@ static int dummy_pullup (struct usb_gadget *_gadget, int value)
dum = gadget_to_dummy_hcd(_gadget)->dum;
spin_lock_irqsave (&dum->lock, flags);
dum->pullup = (value != 0);
set_link_state(dum->hs_hcd);
set_link_state((dum->gadget.speed == USB_SPEED_SUPER ?
dum->ss_hcd : dum->hs_hcd));
spin_unlock_irqrestore (&dum->lock, flags);
usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd));
usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ?
dummy_hcd_to_hcd(dum->ss_hcd) :
dummy_hcd_to_hcd(dum->hs_hcd)));
return 0;
}
@ -821,8 +907,21 @@ static int dummy_udc_start(struct usb_gadget_driver *driver,
}
dum->gadget.ep0 = &dum->ep [0].ep;
dum->gadget.speed = min((u8)driver->speed, (u8)USB_SPEED_HIGH) ;
dum->ep[0].ep.maxpacket = 64;
if (mod_data.is_super_speed)
dum->gadget.speed = driver->speed;
else
dum->gadget.speed = min((u8)USB_SPEED_HIGH, (u8)driver->speed);
if (dum->gadget.speed < driver->speed)
dev_dbg(udc_dev(dum), "This device can perform faster if"
" you connect it to a "
"SupeSpeed port...\n");
if (dum->gadget.speed == USB_SPEED_SUPER) {
for (i = 0; i < DUMMY_ENDPOINTS; i++)
dum->ep[i].ep.max_streams = 0x10;
dum->ep[0].ep.maxpacket = 9;
} else
dum->ep[0].ep.maxpacket = 64;
list_del_init (&dum->ep [0].ep.ep_list);
INIT_LIST_HEAD(&dum->fifo_req.queue);
@ -841,12 +940,21 @@ static int dummy_udc_start(struct usb_gadget_driver *driver,
/* khubd will enumerate this in a while */
spin_lock_irq (&dum->lock);
dum->pullup = 1;
dum->gadget.is_otg =
(dummy_hcd_to_hcd(dum->hs_hcd)->self.otg_port != 0);
set_link_state(dum->hs_hcd);
if (dum->gadget.speed == USB_SPEED_SUPER) {
dum->gadget.is_otg =
(dummy_hcd_to_hcd(dum->ss_hcd)->self.otg_port != 0);
set_link_state(dum->ss_hcd);
} else {
dum->gadget.is_otg =
(dummy_hcd_to_hcd(dum->hs_hcd)->self.otg_port != 0);
set_link_state(dum->hs_hcd);
}
spin_unlock_irq (&dum->lock);
usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd));
usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ?
dummy_hcd_to_hcd(dum->ss_hcd) :
dummy_hcd_to_hcd(dum->hs_hcd)));
return 0;
}
@ -865,18 +973,21 @@ static int dummy_udc_stop(struct usb_gadget_driver *driver)
spin_lock_irqsave (&dum->lock, flags);
dum->pullup = 0;
set_link_state(dum->hs_hcd);
set_link_state((dum->gadget.speed == USB_SPEED_SUPER ?
dum->ss_hcd : dum->hs_hcd));
spin_unlock_irqrestore (&dum->lock, flags);
driver->unbind (&dum->gadget);
dum->gadget.dev.driver = NULL;
dum->driver = NULL;
spin_lock_irqsave (&dum->lock, flags);
dum->pullup = 0;
set_link_state(dum->hs_hcd);
set_link_state((dum->gadget.speed == USB_SPEED_SUPER ?
dum->ss_hcd : dum->hs_hcd));
spin_unlock_irqrestore (&dum->lock, flags);
usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd));
usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ?
dummy_hcd_to_hcd(dum->ss_hcd) :
dummy_hcd_to_hcd(dum->hs_hcd)));
return 0;
}
@ -953,10 +1064,13 @@ static int dummy_udc_suspend (struct platform_device *pdev, pm_message_t state)
dev_dbg (&pdev->dev, "%s\n", __func__);
spin_lock_irq (&dum->lock);
dum->udc_suspended = 1;
set_link_state(dum->hs_hcd);
set_link_state((dum->gadget.speed == USB_SPEED_SUPER ?
dum->ss_hcd : dum->hs_hcd));
spin_unlock_irq (&dum->lock);
usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd));
usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ?
dummy_hcd_to_hcd(dum->ss_hcd) :
dummy_hcd_to_hcd(dum->hs_hcd)));
return 0;
}
@ -967,10 +1081,13 @@ static int dummy_udc_resume (struct platform_device *pdev)
dev_dbg (&pdev->dev, "%s\n", __func__);
spin_lock_irq (&dum->lock);
dum->udc_suspended = 0;
set_link_state(dum->hs_hcd);
set_link_state((dum->gadget.speed == USB_SPEED_SUPER ?
dum->ss_hcd : dum->hs_hcd));
spin_unlock_irq (&dum->lock);
usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd));
usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ?
dummy_hcd_to_hcd(dum->ss_hcd) :
dummy_hcd_to_hcd(dum->hs_hcd)));
return 0;
}
@ -1198,6 +1315,21 @@ static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep)
tmp *= 8 /* applies to entire frame */;
limit += limit * tmp;
}
if (dum->gadget.speed == USB_SPEED_SUPER) {
switch (ep->desc->bmAttributes & 0x03) {
case USB_ENDPOINT_XFER_ISOC:
/* Sec. 4.4.8.2 USB3.0 Spec */
limit = 3 * 16 * 1024 * 8;
break;
case USB_ENDPOINT_XFER_INT:
/* Sec. 4.4.7.2 USB3.0 Spec */
limit = 3 * 1024 * 8;
break;
case USB_ENDPOINT_XFER_BULK:
default:
break;
}
}
return limit;
}
@ -1210,7 +1342,8 @@ static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address)
{
int i;
if (!is_active(dum->hs_hcd))
if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ?
dum->ss_hcd : dum->hs_hcd)))
return NULL;
if ((address & ~USB_DIR_IN) == 0)
return &dum->ep [0];
@ -1284,6 +1417,27 @@ static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb,
case USB_DEVICE_A_ALT_HNP_SUPPORT:
dum->gadget.a_alt_hnp_support = 1;
break;
case USB_DEVICE_U1_ENABLE:
if (dummy_hcd_to_hcd(dum_hcd)->speed ==
HCD_USB3)
w_value = USB_DEV_STAT_U1_ENABLED;
else
ret_val = -EOPNOTSUPP;
break;
case USB_DEVICE_U2_ENABLE:
if (dummy_hcd_to_hcd(dum_hcd)->speed ==
HCD_USB3)
w_value = USB_DEV_STAT_U2_ENABLED;
else
ret_val = -EOPNOTSUPP;
break;
case USB_DEVICE_LTM_ENABLE:
if (dummy_hcd_to_hcd(dum_hcd)->speed ==
HCD_USB3)
w_value = USB_DEV_STAT_LTM_ENABLED;
else
ret_val = -EOPNOTSUPP;
break;
default:
ret_val = -EOPNOTSUPP;
}
@ -1310,6 +1464,27 @@ static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb,
case USB_DEVICE_REMOTE_WAKEUP:
w_value = USB_DEVICE_REMOTE_WAKEUP;
break;
case USB_DEVICE_U1_ENABLE:
if (dummy_hcd_to_hcd(dum_hcd)->speed ==
HCD_USB3)
w_value = USB_DEV_STAT_U1_ENABLED;
else
ret_val = -EOPNOTSUPP;
break;
case USB_DEVICE_U2_ENABLE:
if (dummy_hcd_to_hcd(dum_hcd)->speed ==
HCD_USB3)
w_value = USB_DEV_STAT_U2_ENABLED;
else
ret_val = -EOPNOTSUPP;
break;
case USB_DEVICE_LTM_ENABLE:
if (dummy_hcd_to_hcd(dum_hcd)->speed ==
HCD_USB3)
w_value = USB_DEV_STAT_LTM_ENABLED;
else
ret_val = -EOPNOTSUPP;
break;
default:
ret_val = -EOPNOTSUPP;
break;
@ -1391,6 +1566,10 @@ static void dummy_timer(unsigned long _dum_hcd)
case USB_SPEED_HIGH:
total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/;
break;
case USB_SPEED_SUPER:
/* Bus speed is 500000 bytes/ms, so use a little less */
total = 490000;
break;
default:
dev_err(dummy_dev(dum_hcd), "bogus device speed\n");
return;
@ -1624,6 +1803,18 @@ done:
return retval;
}
static inline void
ss_hub_descriptor(struct usb_hub_descriptor *desc)
{
memset(desc, 0, sizeof *desc);
desc->bDescriptorType = 0x2a;
desc->bDescLength = 12;
desc->wHubCharacteristics = cpu_to_le16(0x0001);
desc->bNbrPorts = 1;
desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/
desc->u.ss.DeviceRemovable = 0xffff;
}
static inline void
hub_descriptor (struct usb_hub_descriptor *desc)
{
@ -1660,6 +1851,12 @@ static int dummy_hub_control (
case ClearPortFeature:
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
if (hcd->speed == HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"USB_PORT_FEAT_SUSPEND req not "
"supported for USB 3.0 roothub\n");
goto error;
}
if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) {
/* 20msec resume signaling */
dum_hcd->resuming = 1;
@ -1668,8 +1865,15 @@ static int dummy_hub_control (
}
break;
case USB_PORT_FEAT_POWER:
if (dum_hcd->port_status & USB_PORT_STAT_POWER)
dev_dbg(dummy_dev(dum_hcd), "power-off\n");
if (hcd->speed == HCD_USB3) {
if (dum_hcd->port_status & USB_PORT_STAT_POWER)
dev_dbg(dummy_dev(dum_hcd),
"power-off\n");
} else
if (dum_hcd->port_status &
USB_SS_PORT_STAT_POWER)
dev_dbg(dummy_dev(dum_hcd),
"power-off\n");
/* FALLS THROUGH */
default:
dum_hcd->port_status &= ~(1 << wValue);
@ -1677,7 +1881,18 @@ static int dummy_hub_control (
}
break;
case GetHubDescriptor:
hub_descriptor((struct usb_hub_descriptor *) buf);
if (hcd->speed == HCD_USB3 &&
(wLength < USB_DT_SS_HUB_SIZE ||
wValue != (USB_DT_SS_HUB << 8))) {
dev_dbg(dummy_dev(dum_hcd),
"Wrong hub descriptor type for "
"USB 3.0 roothub.\n");
goto error;
}
if (hcd->speed == HCD_USB3)
ss_hub_descriptor((struct usb_hub_descriptor *) buf);
else
hub_descriptor((struct usb_hub_descriptor *) buf);
break;
case GetHubStatus:
*(__le32 *) buf = cpu_to_le32 (0);
@ -1700,21 +1915,24 @@ static int dummy_hub_control (
dum_hcd->port_status &= ~USB_PORT_STAT_RESET;
if (dum_hcd->dum->pullup) {
dum_hcd->port_status |= USB_PORT_STAT_ENABLE;
switch (dum_hcd->dum->gadget.speed) {
case USB_SPEED_HIGH:
dum_hcd->port_status |=
USB_PORT_STAT_HIGH_SPEED;
break;
case USB_SPEED_LOW:
dum_hcd->dum->gadget.ep0->
maxpacket = 8;
dum_hcd->port_status |=
USB_PORT_STAT_LOW_SPEED;
break;
default:
dum_hcd->dum->gadget.speed =
USB_SPEED_FULL;
break;
if (hcd->speed < HCD_USB3) {
switch (dum_hcd->dum->gadget.speed) {
case USB_SPEED_HIGH:
dum_hcd->port_status |=
USB_PORT_STAT_HIGH_SPEED;
break;
case USB_SPEED_LOW:
dum_hcd->dum->gadget.ep0->
maxpacket = 8;
dum_hcd->port_status |=
USB_PORT_STAT_LOW_SPEED;
break;
default:
dum_hcd->dum->gadget.speed =
USB_SPEED_FULL;
break;
}
}
}
}
@ -1727,7 +1945,36 @@ static int dummy_hub_control (
break;
case SetPortFeature:
switch (wValue) {
case USB_PORT_FEAT_LINK_STATE:
if (hcd->speed != HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"USB_PORT_FEAT_LINK_STATE req not "
"supported for USB 2.0 roothub\n");
goto error;
}
/*
* Since this is dummy we don't have an actual link so
* there is nothing to do for the SET_LINK_STATE cmd
*/
break;
case USB_PORT_FEAT_U1_TIMEOUT:
case USB_PORT_FEAT_U2_TIMEOUT:
/* TODO: add suspend/resume support! */
if (hcd->speed != HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"USB_PORT_FEAT_U1/2_TIMEOUT req not "
"supported for USB 2.0 roothub\n");
goto error;
}
break;
case USB_PORT_FEAT_SUSPEND:
/* Applicable only for USB2.0 hub */
if (hcd->speed == HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"USB_PORT_FEAT_SUSPEND req not "
"supported for USB 3.0 roothub\n");
goto error;
}
if (dum_hcd->active) {
dum_hcd->port_status |= USB_PORT_STAT_SUSPEND;
@ -1742,12 +1989,31 @@ static int dummy_hub_control (
}
break;
case USB_PORT_FEAT_POWER:
dum_hcd->port_status |= USB_PORT_STAT_POWER;
if (hcd->speed == HCD_USB3)
dum_hcd->port_status |= USB_SS_PORT_STAT_POWER;
else
dum_hcd->port_status |= USB_PORT_STAT_POWER;
set_link_state(dum_hcd);
break;
case USB_PORT_FEAT_BH_PORT_RESET:
/* Applicable only for USB3.0 hub */
if (hcd->speed != HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"USB_PORT_FEAT_BH_PORT_RESET req not "
"supported for USB 2.0 roothub\n");
goto error;
}
/* FALLS THROUGH */
case USB_PORT_FEAT_RESET:
/* if it's already enabled, disable */
dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE
if (hcd->speed == HCD_USB3) {
dum_hcd->port_status = 0;
dum_hcd->port_status =
(USB_SS_PORT_STAT_POWER |
USB_PORT_STAT_CONNECTION |
USB_PORT_STAT_RESET);
} else
dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE
| USB_PORT_STAT_LOW_SPEED
| USB_PORT_STAT_HIGH_SPEED);
/*
@ -1756,21 +2022,50 @@ static int dummy_hub_control (
*/
dum_hcd->dum->devstatus &=
(1 << USB_DEVICE_SELF_POWERED);
/*
* FIXME USB3.0: what is the correct reset signaling
* interval? Is it still 50msec as for HS?
*/
dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50);
/* FALLS THROUGH */
default:
if ((dum_hcd->port_status &
USB_PORT_STAT_POWER) != 0) {
dum_hcd->port_status |= (1 << wValue);
set_link_state(dum_hcd);
}
if (hcd->speed == HCD_USB3) {
if ((dum_hcd->port_status &
USB_SS_PORT_STAT_POWER) != 0) {
dum_hcd->port_status |= (1 << wValue);
set_link_state(dum_hcd);
}
} else
if ((dum_hcd->port_status &
USB_PORT_STAT_POWER) != 0) {
dum_hcd->port_status |= (1 << wValue);
set_link_state(dum_hcd);
}
}
break;
case GetPortErrorCount:
if (hcd->speed != HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"GetPortErrorCount req not "
"supported for USB 2.0 roothub\n");
goto error;
}
/* We'll always return 0 since this is a dummy hub */
*(__le32 *) buf = cpu_to_le32(0);
break;
case SetHubDepth:
if (hcd->speed != HCD_USB3) {
dev_dbg(dummy_dev(dum_hcd),
"SetHubDepth req not supported for "
"USB 2.0 roothub\n");
goto error;
}
break;
default:
dev_dbg(dummy_dev(dum_hcd),
"hub control req%04x v%04x i%04x l%d\n",
typeReq, wValue, wIndex, wLength);
error:
/* "protocol stall" on error */
retval = -EPIPE;
}
@ -1837,6 +2132,9 @@ show_urb (char *buf, size_t size, struct urb *urb)
case USB_SPEED_HIGH:
s = "hs";
break;
case USB_SPEED_SUPER:
s = "ss";
break;
default:
s = "?";
break;
@ -1883,6 +2181,25 @@ show_urbs (struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL);
static int dummy_start_ss(struct dummy_hcd *dum_hcd)
{
init_timer(&dum_hcd->timer);
dum_hcd->timer.function = dummy_timer;
dum_hcd->timer.data = (unsigned long)dum_hcd;
dum_hcd->rh_state = DUMMY_RH_RUNNING;
INIT_LIST_HEAD(&dum_hcd->urbp_list);
dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET;
dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING;
dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1;
#ifdef CONFIG_USB_OTG
dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1;
#endif
return 0;
/* FIXME 'urbs' should be a per-device thing, maybe in usbcore */
return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs);
}
static int dummy_start(struct usb_hcd *hcd)
{
struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
@ -1892,6 +2209,9 @@ static int dummy_start(struct usb_hcd *hcd)
* talk to one device (the slave side). Also appears in sysfs,
* just like more familiar pci-based HCDs.
*/
if (!usb_hcd_is_primary_hcd(hcd))
return dummy_start_ss(dum_hcd);
spin_lock_init(&dum_hcd->dum->lock);
init_timer(&dum_hcd->timer);
dum_hcd->timer.function = dummy_timer;
@ -1934,19 +2254,52 @@ static int dummy_setup(struct usb_hcd *hcd)
if (usb_hcd_is_primary_hcd(hcd)) {
the_controller.hs_hcd = hcd_to_dummy_hcd(hcd);
the_controller.hs_hcd->dum = &the_controller;
/* Mark the first roothub as being USB 2.0. */
/*
* Mark the first roothub as being USB 2.0.
* The USB 3.0 roothub will be registered later by
* dummy_hcd_probe()
*/
hcd->speed = HCD_USB2;
hcd->self.root_hub->speed = USB_SPEED_HIGH;
} else {
the_controller.ss_hcd = hcd_to_dummy_hcd(hcd);
the_controller.ss_hcd->dum = &the_controller;
hcd->speed = HCD_USB3;
hcd->self.root_hub->speed = USB_SPEED_SUPER;
}
return 0;
}
static const struct hc_driver dummy_hcd = {
/* Change a group of bulk endpoints to support multiple stream IDs */
int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
struct usb_host_endpoint **eps, unsigned int num_eps,
unsigned int num_streams, gfp_t mem_flags)
{
if (hcd->speed != HCD_USB3)
dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)),
"%s() - ERROR! Not supported for USB2.0 roothub\n",
__func__);
return 0;
}
/* Reverts a group of bulk endpoints back to not using stream IDs. */
int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev,
struct usb_host_endpoint **eps, unsigned int num_eps,
gfp_t mem_flags)
{
if (hcd->speed != HCD_USB3)
dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)),
"%s() - ERROR! Not supported for USB2.0 roothub\n",
__func__);
return 0;
}
static struct hc_driver dummy_hcd = {
.description = (char *) driver_name,
.product_desc = "Dummy host controller",
.hcd_priv_size = sizeof(struct dummy_hcd),
.flags = HCD_USB2,
.flags = HCD_USB3 | HCD_SHARED,
.reset = dummy_setup,
.start = dummy_start,
@ -1961,15 +2314,21 @@ static const struct hc_driver dummy_hcd = {
.hub_control = dummy_hub_control,
.bus_suspend = dummy_bus_suspend,
.bus_resume = dummy_bus_resume,
.alloc_streams = dummy_alloc_streams,
.free_streams = dummy_free_streams,
};
static int dummy_hcd_probe(struct platform_device *pdev)
{
struct usb_hcd *hs_hcd;
struct usb_hcd *ss_hcd;
int retval;
dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
if (!mod_data.is_super_speed)
dummy_hcd.flags = HCD_USB2;
hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev));
if (!hs_hcd)
return -ENOMEM;
@ -1978,8 +2337,28 @@ static int dummy_hcd_probe(struct platform_device *pdev)
retval = usb_add_hcd(hs_hcd, 0, 0);
if (retval != 0) {
usb_put_hcd(hs_hcd);
the_controller.hs_hcd = NULL;
return retval;
}
if (mod_data.is_super_speed) {
ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev,
dev_name(&pdev->dev), hs_hcd);
if (!ss_hcd) {
retval = -ENOMEM;
goto dealloc_usb2_hcd;
}
retval = usb_add_hcd(ss_hcd, 0, 0);
if (retval)
goto put_usb3_hcd;
}
return 0;
put_usb3_hcd:
usb_put_hcd(ss_hcd);
dealloc_usb2_hcd:
usb_put_hcd(hs_hcd);
the_controller.hs_hcd = the_controller.ss_hcd = NULL;
return retval;
}
@ -1988,9 +2367,17 @@ static int dummy_hcd_remove(struct platform_device *pdev)
struct dummy *dum;
dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum;
if (dum->ss_hcd) {
usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd));
usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd));
}
usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd));
usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd));
the_controller.hs_hcd = NULL;
the_controller.ss_hcd = NULL;
return 0;
}
@ -2065,7 +2452,8 @@ static int __init init (void)
retval = platform_device_add(the_hcd_pdev);
if (retval < 0)
goto err_add_hcd;
if (!the_controller.hs_hcd) {
if (!the_controller.hs_hcd ||
(!the_controller.ss_hcd && mod_data.is_super_speed)) {
/*
* The hcd was added successfully but its probe function failed
* for some reason.