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usb: gadget: add SS descriptors to Ethernet gadget

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Add SuperSpeed descriptors to the Network USB
function drivers.

This has been lightly tested using a Linux host.
I was able to ssh from device to host and host to
device, no obvious problems seen.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Paul Zimmerman
2011-06-27 14:13:18 -07:00
committed by Felipe Balbi
parent 96fe53ef54
commit 04617db7aa
6 changed files with 324 additions and 11 deletions
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100
drivers/usb/gadget/f_ecm.c
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@@ -77,10 +77,12 @@ static inline struct f_ecm *func_to_ecm(struct usb_function *f)
/* peak (theoretical) bulk transfer rate in bits-per-second */
static inline unsigned ecm_bitrate(struct usb_gadget *g)
{
if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER)
return 13 * 1024 * 8 * 1000 * 8;
else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
return 13 * 512 * 8 * 1000 * 8;
else
return 19 * 64 * 1 * 1000 * 8;
return 19 * 64 * 1 * 1000 * 8;
}
/*-------------------------------------------------------------------------*/
@@ -210,8 +212,10 @@ static struct usb_descriptor_header *ecm_fs_function[] = {
(struct usb_descriptor_header *) &ecm_header_desc,
(struct usb_descriptor_header *) &ecm_union_desc,
(struct usb_descriptor_header *) &ecm_desc,
/* NOTE: status endpoint might need to be removed */
(struct usb_descriptor_header *) &fs_ecm_notify_desc,
/* data interface, altsettings 0 and 1 */
(struct usb_descriptor_header *) &ecm_data_nop_intf,
(struct usb_descriptor_header *) &ecm_data_intf,
@@ -231,6 +235,7 @@ static struct usb_endpoint_descriptor hs_ecm_notify_desc = {
.wMaxPacketSize = cpu_to_le16(ECM_STATUS_BYTECOUNT),
.bInterval = LOG2_STATUS_INTERVAL_MSEC + 4,
};
static struct usb_endpoint_descriptor hs_ecm_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -255,8 +260,10 @@ static struct usb_descriptor_header *ecm_hs_function[] = {
(struct usb_descriptor_header *) &ecm_header_desc,
(struct usb_descriptor_header *) &ecm_union_desc,
(struct usb_descriptor_header *) &ecm_desc,
/* NOTE: status endpoint might need to be removed */
(struct usb_descriptor_header *) &hs_ecm_notify_desc,
/* data interface, altsettings 0 and 1 */
(struct usb_descriptor_header *) &ecm_data_nop_intf,
(struct usb_descriptor_header *) &ecm_data_intf,
@@ -265,6 +272,76 @@ static struct usb_descriptor_header *ecm_hs_function[] = {
NULL,
};
/* super speed support: */
static struct usb_endpoint_descriptor ss_ecm_notify_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = cpu_to_le16(ECM_STATUS_BYTECOUNT),
.bInterval = LOG2_STATUS_INTERVAL_MSEC + 4,
};
static struct usb_ss_ep_comp_descriptor ss_ecm_intr_comp_desc = {
.bLength = sizeof ss_ecm_intr_comp_desc,
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* the following 3 values can be tweaked if necessary */
/* .bMaxBurst = 0, */
/* .bmAttributes = 0, */
.wBytesPerInterval = cpu_to_le16(ECM_STATUS_BYTECOUNT),
};
static struct usb_endpoint_descriptor ss_ecm_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = cpu_to_le16(1024),
};
static struct usb_endpoint_descriptor ss_ecm_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = cpu_to_le16(1024),
};
static struct usb_ss_ep_comp_descriptor ss_ecm_bulk_comp_desc = {
.bLength = sizeof ss_ecm_bulk_comp_desc,
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* the following 2 values can be tweaked if necessary */
/* .bMaxBurst = 0, */
/* .bmAttributes = 0, */
};
static struct usb_descriptor_header *ecm_ss_function[] = {
/* CDC ECM control descriptors */
(struct usb_descriptor_header *) &ecm_control_intf,
(struct usb_descriptor_header *) &ecm_header_desc,
(struct usb_descriptor_header *) &ecm_union_desc,
(struct usb_descriptor_header *) &ecm_desc,
/* NOTE: status endpoint might need to be removed */
(struct usb_descriptor_header *) &ss_ecm_notify_desc,
(struct usb_descriptor_header *) &ss_ecm_intr_comp_desc,
/* data interface, altsettings 0 and 1 */
(struct usb_descriptor_header *) &ecm_data_nop_intf,
(struct usb_descriptor_header *) &ecm_data_intf,
(struct usb_descriptor_header *) &ss_ecm_in_desc,
(struct usb_descriptor_header *) &ss_ecm_bulk_comp_desc,
(struct usb_descriptor_header *) &ss_ecm_out_desc,
(struct usb_descriptor_header *) &ss_ecm_bulk_comp_desc,
NULL,
};
/* string descriptors: */
static struct usb_string ecm_string_defs[] = {
@@ -679,6 +756,20 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
goto fail;
}
if (gadget_is_superspeed(c->cdev->gadget)) {
ss_ecm_in_desc.bEndpointAddress =
fs_ecm_in_desc.bEndpointAddress;
ss_ecm_out_desc.bEndpointAddress =
fs_ecm_out_desc.bEndpointAddress;
ss_ecm_notify_desc.bEndpointAddress =
fs_ecm_notify_desc.bEndpointAddress;
/* copy descriptors, and track endpoint copies */
f->ss_descriptors = usb_copy_descriptors(ecm_ss_function);
if (!f->ss_descriptors)
goto fail;
}
/* NOTE: all that is done without knowing or caring about
* the network link ... which is unavailable to this code
* until we're activated via set_alt().
@@ -688,6 +779,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
ecm->port.close = ecm_close;
DBG(cdev, "CDC Ethernet: %s speed IN/%s OUT/%s NOTIFY/%s\n",
gadget_is_superspeed(c->cdev->gadget) ? "super" :
gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
ecm->port.in_ep->name, ecm->port.out_ep->name,
ecm->notify->name);
@@ -696,6 +788,8 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
fail:
if (f->descriptors)
usb_free_descriptors(f->descriptors);
if (f->hs_descriptors)
usb_free_descriptors(f->hs_descriptors);
if (ecm->notify_req) {
kfree(ecm->notify_req->buf);
@@ -722,6 +816,8 @@ ecm_unbind(struct usb_configuration *c, struct usb_function *f)
DBG(c->cdev, "ecm unbind\n");
if (gadget_is_superspeed(c->cdev->gadget))
usb_free_descriptors(f->ss_descriptors);
if (gadget_is_dualspeed(c->cdev->gadget))
usb_free_descriptors(f->hs_descriptors);
usb_free_descriptors(f->descriptors);