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USB: introduce usb_interface/usb_configuration structs 

Currently we have two conflicting definitions of struct usb_config_descriptor
and struct usb_interface_descriptor in the tree. This is because the USB code
uses additional fields in the structs for internal housekeeping. Add
struct usb_interface and struct struct usb_configuration with the housekeeping
data and embed the corresponding hardware structs into them. This frees the
way to use the definitions from ch9.h in the next step.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-07-10 11:36:12 +02:00
parent 4a872ae0ff
commit 245069bcef
4 changed files with 62 additions and 61 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/usb/usbnet.c
View File

@ -16,7 +16,7 @@ int usbnet_get_endpoints(struct usbnet *dev)
{
struct usb_device *udev = dev->udev;
int tmp;
struct usb_interface_descriptor *alt = NULL;
struct usb_interface *alt = NULL;
struct usb_endpoint_descriptor *in = NULL, *out = NULL;
struct usb_endpoint_descriptor *status = NULL;
@ -24,13 +24,13 @@ int usbnet_get_endpoints(struct usbnet *dev)
unsigned ep;
in = out = status = NULL;
alt = &udev->config.if_desc[tmp];
alt = &udev->config.interface[tmp];
/* take the first altsetting with in-bulk + out-bulk;
* remember any status endpoint, just in case;
* ignore other endpoints and altsetttings.
*/
for (ep = 0; ep < alt->bNumEndpoints; ep++) {
for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
struct usb_endpoint_descriptor *e;
int intr = 0;
@ -63,10 +63,10 @@ int usbnet_get_endpoints(struct usbnet *dev)
if (!alt || !in || !out)
return -EINVAL;
if (alt->bAlternateSetting != 0
if (alt->desc.bAlternateSetting != 0
|| !(dev->driver_info->flags & FLAG_NO_SETINT)) {
tmp = usb_set_interface (dev->udev, alt->bInterfaceNumber,
alt->bAlternateSetting);
tmp = usb_set_interface(dev->udev, alt->desc.bInterfaceNumber,
alt->desc.bAlternateSetting);
if (tmp < 0)
return tmp;
}

52
drivers/usb/core/usb.c
View File

@ -159,10 +159,10 @@ static int usb_set_maxpacket(struct usb_device *dev)
{
int i, ii;
for (i = 0; i < dev->config.bNumInterfaces; i++)
for (ii = 0; ii < dev->config.if_desc[i].bNumEndpoints; ii++)
for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
for (ii = 0; ii < dev->config.interface[i].desc.bNumEndpoints; ii++)
usb_set_maxpacket_ep(dev,
&dev->config.if_desc[i].ep_desc[ii]);
&dev->config.interface[i].ep_desc[ii]);
return 0;
}
@ -193,11 +193,11 @@ static int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int c
le16_to_cpus(&(dev->config.wTotalLength));
dev->config.no_of_if = 0;
index = dev->config.bLength;
index = dev->config.desc.bLength;
/* Ok the first entry must be a configuration entry,
* now process the others */
head = (struct usb_descriptor_header *) &buffer[index];
while (index + 1 < dev->config.wTotalLength) {
while (index + 1 < dev->config.desc.wTotalLength) {
switch (head->bDescriptorType) {
case USB_DT_INTERFACE:
if (((struct usb_interface_descriptor *) \
@ -215,24 +215,24 @@ static int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int c
break;
}
dev->config.no_of_if++;
memcpy(&dev->config.if_desc[ifno],
memcpy(&dev->config.interface[ifno].desc,
&buffer[index], buffer[index]);
dev->config.if_desc[ifno].no_of_ep = 0;
dev->config.if_desc[ifno].num_altsetting = 1;
dev->config.interface[ifno].no_of_ep = 0;
dev->config.interface[ifno].num_altsetting = 1;
curr_if_num =
dev->config.if_desc[ifno].bInterfaceNumber;
dev->config.interface[ifno].desc.bInterfaceNumber;
} else {
/* found alternate setting for the interface */
dev->config.if_desc[ifno].num_altsetting++;
dev->config.interface[ifno].num_altsetting++;
}
break;
case USB_DT_ENDPOINT:
epno = dev->config.if_desc[ifno].no_of_ep;
epno = dev->config.interface[ifno].no_of_ep;
/* found an endpoint */
dev->config.if_desc[ifno].no_of_ep++;
memcpy(&dev->config.if_desc[ifno].ep_desc[epno],
dev->config.interface[ifno].no_of_ep++;
memcpy(&dev->config.interface[ifno].ep_desc[epno],
&buffer[index], buffer[index]);
le16_to_cpus(&(dev->config.if_desc[ifno].ep_desc[epno].\
le16_to_cpus(&(dev->config.interface[ifno].ep_desc[epno].\
wMaxPacketSize));
USB_PRINTF("if %d, ep %d\n", ifno, epno);
break;
@ -411,7 +411,7 @@ static int usb_new_device(struct usb_device *dev)
usb_parse_config(dev, buf, 0);
usb_set_maxpacket(dev);
/* we set the default configuration here */
if (usb_set_configuration(dev, dev->config.bConfigurationValue)) {
if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
printf("failed to set default configuration " \
"len %d, status %lX\n", dev->act_len, dev->status);
goto err_out;
@ -721,12 +721,12 @@ int usb_get_configuration_no(struct usb_device *dev,
*/
int usb_set_interface(struct usb_device *dev, int interface, int alternate)
{
struct usb_interface_descriptor *if_face = NULL;
struct usb_interface *if_face = NULL;
int ret, i;
for (i = 0; i < dev->config.bNumInterfaces; i++) {
if (dev->config.if_desc[i].bInterfaceNumber == interface) {
if_face = &dev->config.if_desc[i];
for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
if (dev->config.interface[i].desc.bInterfaceNumber == interface) {
if_face = &dev->config.interface[i];
break;
}
}
@ -1297,21 +1297,21 @@ static int usb_hub_configure(struct usb_device *dev)
static int usb_hub_probe(struct usb_device *dev, int ifnum)
{
struct usb_interface_descriptor *iface;
struct usb_interface *iface;
struct usb_endpoint_descriptor *ep;
int ret;
iface = &dev->config.if_desc[ifnum];
iface = &dev->config.interface[ifnum];
/* Is it a hub? */
if (iface->bInterfaceClass != USB_CLASS_HUB)
if (iface->desc.bInterfaceClass != USB_CLASS_HUB)
return 0;
/* Some hubs have a subclass of 1, which AFAICT according to the */
/* specs is not defined, but it works */
if ((iface->bInterfaceSubClass != 0) &&
(iface->bInterfaceSubClass != 1))
if ((iface->desc.bInterfaceSubClass != 0) &&
(iface->desc.bInterfaceSubClass != 1))
return 0;
/* Multiple endpoints? What kind of mutant ninja-hub is this? */
if (iface->bNumEndpoints != 1)
if (iface->desc.bNumEndpoints != 1)
return 0;
ep = &iface->ep_desc[0];
/* Output endpoint? Curiousier and curiousier.. */
@ -1373,7 +1373,7 @@ static int usb_match_one_id(struct usb_device *usbdev,
/* match any interface */
for (ifno=0; ifno<usbdev->config.no_of_if; ifno++) {
struct usb_interface_descriptor *intf;
intf = &usbdev->config.if_desc[ifno];
intf = &usbdev->config.interface[ifno].desc;
if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) &&
(id->bInterfaceClass != intf->bInterfaceClass))

24
drivers/usb/storage/usb.c
View File

@ -441,7 +441,7 @@ static void get_transport(struct us_data *us)
}
/* Get the endpoint settings */
static int get_pipes(struct us_data *us, struct usb_interface_descriptor *intf)
static int get_pipes(struct us_data *us, struct usb_interface *intf)
{
unsigned int i;
struct usb_endpoint_descriptor *ep;
@ -455,7 +455,7 @@ static int get_pipes(struct us_data *us, struct usb_interface_descriptor *intf)
* An optional interrupt-in is OK (necessary for CBI protocol).
* We will ignore any others.
*/
for (i = 0; i < intf->bNumEndpoints; i++) {
for (i = 0; i < intf->desc.bNumEndpoints; i++) {
ep = &intf->ep_desc[i];
if (USB_EP_IS_XFER_BULK(ep)) {
@ -517,28 +517,28 @@ static int usb_stor_probe(struct usb_device *usbdev,
struct us_data *us;
int result;
int ifno;
struct usb_interface_descriptor *intf;
struct usb_interface *intf;
US_DEBUGP("Supported USB Mass Storage device detected\n");
/* scan usbdev interfaces again to find one that we can handle */
for (ifno=0; ifno<usbdev->config.no_of_if; ifno++) {
intf = &usbdev->config.if_desc[ifno];
intf = &usbdev->config.interface[ifno];
if (intf->bInterfaceClass == USB_CLASS_MASS_STORAGE &&
intf->bInterfaceSubClass == US_SC_SCSI &&
intf->bInterfaceProtocol == US_PR_BULK)
if (intf->desc.bInterfaceClass == USB_CLASS_MASS_STORAGE &&
intf->desc.bInterfaceSubClass == US_SC_SCSI &&
intf->desc.bInterfaceProtocol == US_PR_BULK)
break;
}
if (ifno >= usbdev->config.no_of_if)
return -ENXIO;
/* select the right interface */
result = usb_set_interface(usbdev, intf->bInterfaceNumber, 0);
result = usb_set_interface(usbdev, intf->desc.bInterfaceNumber, 0);
if (result)
return result;
US_DEBUGP("Selected interface %d\n", (int)intf->bInterfaceNumber);
US_DEBUGP("Selected interface %d\n", (int)intf->desc.bInterfaceNumber);
/* allocate us_data structure */
us = (struct us_data *)malloc(sizeof(struct us_data));
@ -549,9 +549,9 @@ static int usb_stor_probe(struct usb_device *usbdev,
/* initialize the us_data structure */
us->pusb_dev = usbdev;
us->flags = 0;
us->ifnum = intf->bInterfaceNumber;
us->subclass = intf->bInterfaceSubClass;
us->protocol = intf->bInterfaceProtocol;
us->ifnum = intf->desc.bInterfaceNumber;
us->subclass = intf->desc.bInterfaceSubClass;
us->protocol = intf->desc.bInterfaceProtocol;
INIT_LIST_HEAD(&us->blk_dev_list);
/* get standard transport and protocol settings */

35
include/usb/usb.h
View File

@ -39,13 +39,6 @@
#define USB_CNTL_TIMEOUT 100 /* 100ms timeout */
/* String descriptor */
struct usb_string_descriptor {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short wData[1];
} __attribute__ ((packed));
/* device request (setup) */
struct devrequest {
unsigned char requesttype;
@ -102,12 +95,6 @@ struct usb_interface_descriptor {
unsigned char bInterfaceSubClass;
unsigned char bInterfaceProtocol;
unsigned char iInterface;
unsigned char no_of_ep;
unsigned char num_altsetting;
unsigned char act_altsetting;
struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
} __attribute__ ((packed));
@ -121,9 +108,6 @@ struct usb_config_descriptor {
unsigned char iConfiguration;
unsigned char bmAttributes;
unsigned char MaxPower;
unsigned char no_of_if; /* number of interfaces */
struct usb_interface_descriptor if_desc[USB_MAXINTERFACES];
} __attribute__ ((packed));
enum {
@ -134,6 +118,23 @@ enum {
PACKET_SIZE_64 = 3,
};
struct usb_interface {
struct usb_interface_descriptor desc;
unsigned char no_of_ep;
unsigned char num_altsetting;
unsigned char act_altsetting;
struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
};
struct usb_configuration {
struct usb_config_descriptor desc;
unsigned char no_of_if; /* number of interfaces */
struct usb_interface interface[USB_MAXINTERFACES];
};
struct usb_device {
int devnum; /* Device number on USB bus */
int speed; /* full/low/high */
@ -154,7 +155,7 @@ struct usb_device {
int configno; /* selected config number */
struct usb_device_descriptor *descriptor; /* Device Descriptor */
struct usb_config_descriptor config; /* config descriptor */
struct usb_configuration config; /* config descriptor */
struct devrequest *setup_packet;
int have_langid; /* whether string_langid is valid yet */