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add standard request

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This commit is contained in:
Martin Mueller
2010-11-04 00:41:49 +01:00
committed by Martin Mueller
parent 6e090ccee1
commit d6eacce827
11 changed files with 755 additions and 68 deletions
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213
lib/usb/usb_standard.c
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@@ -115,8 +115,13 @@ static int usb_standard_get_descriptor(struct usb_setup_data *req,
return 0;
}
static int usb_standard_set_address(struct usb_setup_data *req)
static int usb_standard_set_address(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)req;
(void)buf;
(void)len;
/* The actual address is only latched at the STATUS IN stage */
if((req->bmRequestType != 0) || (req->wValue >= 128)) return 0;
@@ -125,8 +130,13 @@ static int usb_standard_set_address(struct usb_setup_data *req)
return 1;
}
static int usb_standard_set_configuration(struct usb_setup_data *req)
static int usb_standard_set_configuration(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)req;
(void)buf;
(void)len;
/* Is this correct, or should we reset alternate settings */
if(req->wValue == _usbd_device.current_config) return 1;
@@ -152,18 +162,50 @@ static int usb_standard_get_configuration(struct usb_setup_data *req,
return 1;
}
static int usb_standard_set_interface(struct usb_setup_data *req)
static int usb_standard_set_interface(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)req;
/* FIXME: Do something meaningful here: call app */
(void)buf;
/* FIXME: adapt if we have more than one interface */
if(req->wValue != 0) return 0;
*len = 0;
return 1;
}
static int usb_standard_get_status(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len)
static int usb_standard_get_interface(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)req;
/* FIXME: Return some meaningful status */
(void)buf;
/* FIXME: adapt if we have more than one interface */
*len = 1;
(*buf)[0] = 0;
return 1;
}
static int usb_standard_device_get_status(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)req;
/* bit 0: self powered */
/* bit 1: remote wakeup */
if(*len > 2) *len = 2;
(*buf)[0] = 0;
(*buf)[1] = 0;
return 1;
}
static int usb_standard_interface_get_status(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)req;
/* not defined */
if(*len > 2) *len = 2;
(*buf)[0] = 0;
@@ -172,18 +214,55 @@ static int usb_standard_get_status(struct usb_setup_data *req, uint8_t **buf,
return 1;
}
int _usbd_standard_request_command(struct usb_setup_data *req)
static int usb_standard_endpoint_get_status(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
int (*command)(struct usb_setup_data *req) = NULL;
(void)req;
if(*len > 2) *len = 2;
(*buf)[0] = usbd_get_ep_stall(req->wIndex);
(*buf)[1] = 0;
if((req->bmRequestType & 0x60) != USB_REQ_TYPE_STANDARD)
return 0;
return 1;
}
static int usb_standard_endpoint_stall(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)buf;
(void)len;
usbd_ep_stall(req->wIndex);
return 1;
}
static int usb_standard_endpoint_unstall(struct usb_setup_data *req,
uint8_t **buf, uint16_t *len)
{
(void)buf;
(void)len;
usbd_ep_stall(req->wIndex);
return 1;
}
int _usbd_standard_request_device(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len)
{
int (*command)(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len) = NULL;
switch(req->bRequest) {
case USB_REQ_CLEAR_FEATURE:
/* FIXME: Implement CLEAR_FEATURE */
/* TODO: Check what standard features are.
* Maybe this is the application's responsibility. */
case USB_REQ_SET_FEATURE:
if (req->wValue == USB_FEAT_DEVICE_REMOTE_WAKEUP) {
/* device wakeup code goes here */
}
if (req->wValue == USB_FEAT_TEST_MODE) {
/* test mode code goes here */
}
break;
case USB_REQ_SET_ADDRESS:
/* SET ADDRESS is an exception.
@@ -193,45 +272,19 @@ int _usbd_standard_request_command(struct usb_setup_data *req)
case USB_REQ_SET_CONFIGURATION:
command = usb_standard_set_configuration;
break;
case USB_REQ_SET_FEATURE:
/* FIXME: Implement SET_FEATURE */
/* TODO: Check what standard features are.
* Maybe this is the application's responsibility. */
break;
case USB_REQ_SET_INTERFACE:
command = usb_standard_set_interface;
break;
}
if(!command) return 0;
return command(req);
}
int _usbd_standard_request_read(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len)
{
int (*command)(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len) = NULL;
/* Handle standard requests */
if((req->bmRequestType & 0x60) != USB_REQ_TYPE_STANDARD)
return 0;
switch(req->bRequest) {
case USB_REQ_GET_CONFIGURATION:
command = usb_standard_get_configuration;
break;
case USB_REQ_GET_DESCRIPTOR:
command = usb_standard_get_descriptor;
break;
case USB_REQ_GET_INTERFACE:
/* FIXME: Implement GET_INTERFACE */
break;
case USB_REQ_GET_STATUS:
/* GET_STATUS always responds with zero reply.
* The application may override this behaviour. */
command = usb_standard_get_status;
command = usb_standard_device_get_status;
break;
case USB_REQ_SET_DESCRIPTOR:
/* SET_DESCRIPTOR is optional and not implemented. */
break;
}
@@ -240,19 +293,52 @@ int _usbd_standard_request_read(struct usb_setup_data *req, uint8_t **buf,
return command(req, buf, len);
}
int _usbd_standard_request_write(struct usb_setup_data *req, uint8_t *buf,
uint16_t len)
int _usbd_standard_request_interface(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len)
{
int (*command)(struct usb_setup_data *req, uint8_t *buf, uint16_t len)
= NULL;
/* Handle standard requests */
if((req->bmRequestType & 0x60) != USB_REQ_TYPE_STANDARD)
return 0;
int (*command)(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len) = NULL;
switch(req->bRequest) {
case USB_REQ_SET_DESCRIPTOR:
/* SET_DESCRIPTOR is optional and not implemented. */
case USB_REQ_CLEAR_FEATURE:
case USB_REQ_SET_FEATURE:
/* not defined */
break;
case USB_REQ_GET_INTERFACE:
command = usb_standard_get_interface;
break;
case USB_REQ_SET_INTERFACE:
command = usb_standard_set_interface;
break;
case USB_REQ_GET_STATUS:
command = usb_standard_interface_get_status;
break;
}
if(!command) return 0;
return command(req, buf, len);
}
int _usbd_standard_request_endpoint(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len)
{
int (*command)(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len) = NULL;
switch(req->bRequest) {
case USB_REQ_CLEAR_FEATURE:
if (req->wValue == USB_FEAT_ENDPOINT_HALT) {
command = usb_standard_endpoint_stall;
}
break;
case USB_REQ_SET_FEATURE:
if (req->wValue == USB_FEAT_ENDPOINT_HALT) {
command = usb_standard_endpoint_unstall;
}
break;
case USB_REQ_GET_STATUS:
command = usb_standard_endpoint_get_status;
break;
case USB_REQ_SET_SYNCH_FRAME:
/* FIXME: SYNCH_FRAME is not implemented. */
@@ -266,3 +352,22 @@ int _usbd_standard_request_write(struct usb_setup_data *req, uint8_t *buf,
return command(req, buf, len);
}
int _usbd_standard_request(struct usb_setup_data *req, uint8_t **buf,
uint16_t *len)
{
/* FIXME: have class/vendor requests as well */
if((req->bmRequestType & USB_REQ_TYPE_TYPE) != USB_REQ_TYPE_STANDARD)
return 0;
switch (req->bmRequestType & USB_REQ_TYPE_RECIPIENT) {
case USB_REQ_TYPE_DEVICE:
return _usbd_standard_request_device(req, buf, len);
case USB_REQ_TYPE_INTERFACE:
return _usbd_standard_request_interface(req, buf, len);
case USB_REQ_TYPE_ENDPOINT:
return _usbd_standard_request_endpoint(req, buf, len);
default:
return 0;
}
}