Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/firmware/usbstack/usb_core.c
Frank Gevaerts f712c7ff36 fix alignment and packed-ness of USB structs 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16455 a1c6a512-1295-4272-9138-f99709370657
2008-02-29 18:33:54 +00:00

774 lines
25 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: $
*
* Copyright (C) 2007 by Bj<42>rn Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "system.h"
#include "thread.h"
#include "kernel.h"
#include "string.h"
//#define LOGF_ENABLE
#include "logf.h"
#include "usb.h"
#include "usb_ch9.h"
#include "usb_drv.h"
#include "usb_core.h"
#if defined(USB_STORAGE)
#include "usb_storage.h"
#endif
#if defined(USB_SERIAL)
#include "usb_serial.h"
#endif
#if defined(USB_BENCHMARK)
#include "usb_benchmark.h"
#endif
/* TODO: Move this target-specific stuff somewhere else (serial number reading) */
#ifdef HAVE_AS3514
#include "i2c-pp.h"
#include "as3514.h"
#endif
#if !defined(HAVE_AS3514) && !defined(IPOD_ARCH)
#include "ata.h"
#endif
/*-------------------------------------------------------------------------*/
/* USB protocol descriptors: */
#define USB_SC_SCSI 0x06 /* Transparent */
#define USB_PROT_BULK 0x50 /* bulk only */
static const struct usb_device_descriptor __attribute__((aligned(2))) device_descriptor= {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = USB_DT_DEVICE,
#ifdef USE_HIGH_SPEED
.bcdUSB = 0x0200,
#else
.bcdUSB = 0x0110,
#endif
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = USB_VENDOR_ID,
.idProduct = USB_PRODUCT_ID,
.bcdDevice = 0x0100,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1
} ;
struct usb_config_descriptor __attribute__((aligned(2))) config_descriptor =
{
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = USB_DT_CONFIG,
.wTotalLength = 0, /* will be filled in later */
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
.bMaxPower = 250, /* 500mA in 2mA units */
};
#ifdef USB_CHARGING_ONLY
/* dummy interface for charging-only */
struct usb_interface_descriptor __attribute__((aligned(2))) charging_interface_descriptor =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 0,
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = 5
};
#endif
#ifdef USB_STORAGE
/* storage interface */
struct usb_interface_descriptor __attribute__((aligned(2))) mass_storage_interface_descriptor =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
.bInterfaceSubClass = USB_SC_SCSI,
.bInterfaceProtocol = USB_PROT_BULK,
.iInterface = 0
};
struct usb_endpoint_descriptor __attribute__((aligned(2))) mass_storage_ep_in_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = EP_MASS_STORAGE | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 16,
.bInterval = 0
};
struct usb_endpoint_descriptor __attribute__((aligned(2))) mass_storage_ep_out_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = EP_MASS_STORAGE | USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 16,
.bInterval = 0
};
#endif
#ifdef USB_SERIAL
/* serial interface */
struct usb_interface_descriptor __attribute__((aligned(2))) serial_interface_descriptor =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_CDC_DATA,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = 0
};
struct usb_endpoint_descriptor __attribute__((aligned(2))) serial_ep_in_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = EP_SERIAL | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 16,
.bInterval = 0
};
struct usb_endpoint_descriptor __attribute__((aligned(2))) serial_ep_out_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = EP_SERIAL | USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 16,
.bInterval = 0
};
#endif
#ifdef USB_BENCHMARK
/* bulk test interface */
struct usb_interface_descriptor __attribute__((aligned(2))) benchmark_interface_descriptor =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceSubClass = 255,
.bInterfaceProtocol = 255,
.iInterface = 4
};
struct usb_endpoint_descriptor __attribute__((aligned(2))) benchmark_ep_in_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = EP_BENCHMARK | USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 16,
.bInterval = 0
};
struct usb_endpoint_descriptor benchmark_ep_out_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = EP_BENCHMARK | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 16,
.bInterval = 0
};
#endif
static const struct usb_qualifier_descriptor __attribute__((aligned(2))) qualifier_descriptor =
{
.bLength = sizeof(struct usb_qualifier_descriptor),
.bDescriptorType = USB_DT_DEVICE_QUALIFIER,
.bcdUSB = 0x0200,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.bNumConfigurations = 1
};
static struct usb_string_descriptor __attribute__((aligned(2))) usb_string_iManufacturer =
{
24,
USB_DT_STRING,
{'R','o','c','k','b','o','x','.','o','r','g'}
};
static struct usb_string_descriptor __attribute__((aligned(2))) usb_string_iProduct =
{
42,
USB_DT_STRING,
{'R','o','c','k','b','o','x',' ','m','e','d','i','a',' ','p','l','a','y','e','r'}
};
static struct usb_string_descriptor __attribute__((aligned(2))) usb_string_iSerial =
{
82,
USB_DT_STRING,
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0',
'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0',
'0','0','0','0','0','0','0','0'}
};
/* Generic for all targets */
/* this is stringid #0: languages supported */
static struct usb_string_descriptor __attribute__((aligned(2))) lang_descriptor =
{
4,
USB_DT_STRING,
{0x0409} /* LANGID US English */
};
static struct usb_string_descriptor __attribute__((aligned(2))) usb_string_usb_benchmark =
{
40,
USB_DT_STRING,
{'B','u','l','k',' ','t','e','s','t',' ','i','n','t','e','r','f','a','c','e'}
};
static struct usb_string_descriptor __attribute__((aligned(2))) usb_string_charging_only =
{
28,
USB_DT_STRING,
{'C','h','a','r','g','i','n','g',' ','o','n','l','y'}
};
static struct usb_string_descriptor* usb_strings[] =
{
&lang_descriptor,
&usb_string_iManufacturer,
&usb_string_iProduct,
&usb_string_iSerial,
&usb_string_usb_benchmark,
&usb_string_charging_only
};
static int usb_address = 0;
static bool initialized = false;
static enum { DEFAULT, ADDRESS, CONFIGURED } usb_state;
static bool usb_core_storage_enabled = false;
static bool usb_core_serial_enabled = false;
static bool usb_core_charging_enabled = false;
#if defined(USB_BENCHMARK)
static bool usb_core_benchmark_enabled = false;
#endif
static void usb_core_control_request_handler(struct usb_ctrlrequest* req);
static int ack_control(struct usb_ctrlrequest* req);
static unsigned char *response_data;
static unsigned char __response_data[CACHEALIGN_UP(256)] CACHEALIGN_ATTR;
static struct usb_transfer_completion_event_data events[NUM_ENDPOINTS];
#ifdef IPOD_ARCH
static void set_serial_descriptor(void)
{
static short hex[16] = {'0','1','2','3','4','5','6','7',
'8','9','A','B','C','D','E','F'};
#ifdef IPOD_VIDEO
uint32_t* serial = (uint32_t*)(0x20004034);
#else
uint32_t* serial = (uint32_t*)(0x20002034);
#endif
/* We need to convert from a little-endian 64-bit int
into a utf-16 string of hex characters */
short* p = &usb_string_iSerial.wString[23];
uint32_t x;
int i,j;
for (i = 0; i < 2; i++)
{
x = serial[i];
for (j=0;j<8;j++)
{
*p-- = hex[x & 0xf];
x >>= 4;
}
}
usb_string_iSerial.bLength=50;
}
#elif defined(HAVE_AS3514)
static void set_serial_descriptor(void)
{
static short hex[16] = {'0','1','2','3','4','5','6','7',
'8','9','A','B','C','D','E','F'};
unsigned char serial[16];
/* Align 32 digits right in the 40-digit serial number */
short* p = usb_string_iSerial.wString;
int i;
i2c_readbytes(AS3514_I2C_ADDR, 0x30, 0x10, serial);
for (i = 0; i < 16; i++)
{
*p++ = hex[(serial[i] >> 4) & 0xF];
*p++ = hex[(serial[i] >> 0) & 0xF];
}
usb_string_iSerial.bLength=66;
}
#else
/* If we don't know the device serial number, use the one
* from the disk */
static void set_serial_descriptor(void)
{
static short hex[16] = {'0','1','2','3','4','5','6','7',
'8','9','A','B','C','D','E','F'};
short* p = usb_string_iSerial.wString;
unsigned short* identify = ata_get_identify();
unsigned short x;
int i;
for (i = 10; i < 20; i++)
{
x = identify[i];
*p++ = hex[(x >> 12) & 0xF];
*p++ = hex[(x >> 8) & 0xF];
*p++ = hex[(x >> 4) & 0xF];
*p++ = hex[(x >> 0) & 0xF];
}
usb_string_iSerial.bLength=82;
}
#endif
void usb_core_init(void)
{
if (initialized)
return;
response_data = (void*)UNCACHED_ADDR(&__response_data);
usb_drv_init();
/* class driver init functions should be safe to call even if the driver
* won't be used. This simplifies other logic (i.e. we don't need to know
* yet which drivers will be enabled */
#ifdef USB_STORAGE
usb_storage_init();
#endif
#ifdef USB_SERIAL
usb_serial_init();
#endif
#ifdef USB_BENCHMARK
usb_benchmark_init();
#endif
initialized = true;
usb_state = DEFAULT;
logf("usb_core_init() finished");
}
void usb_core_exit(void)
{
if (initialized) {
usb_drv_exit();
}
initialized = false;
logf("usb_core_exit() finished");
}
void usb_core_handle_transfer_completion(struct usb_transfer_completion_event_data* event)
{
switch(event->endpoint) {
case EP_CONTROL:
logf("ctrl handled %ld",current_tick);
usb_core_control_request_handler((struct usb_ctrlrequest*)event->data);
break;
#ifdef USB_STORAGE
case EP_MASS_STORAGE:
usb_storage_transfer_complete(event->in,event->status,event->length);
break;
#endif
#ifdef USB_SERIAL
case EP_SERIAL:
usb_serial_transfer_complete(event->in,event->status,event->length);
break;
#endif
#ifdef USB_BENCHMARK
case EP_BENCHMARK:
usb_benchmark_transfer_complete(event->in);
break;
#endif
#ifdef USB_CHARGING_ONLY
case EP_CHARGING_ONLY:
break;
#endif
}
}
void usb_core_enable_protocol(int driver,bool enabled)
{
switch(driver) {
case USB_DRIVER_MASS_STORAGE:
usb_core_storage_enabled = enabled;
break;
case USB_DRIVER_SERIAL:
usb_core_serial_enabled = enabled;
break;
case USB_DRIVER_CHARGING_ONLY:
usb_core_charging_enabled = enabled;
break;
}
}
static void usb_core_control_request_handler(struct usb_ctrlrequest* req)
{
if(usb_state == DEFAULT) {
set_serial_descriptor();
}
#ifdef USB_BENCHMARK
if ((req->bRequestType & 0x60) == USB_TYPE_VENDOR) {
usb_benchmark_control_request(req);
return;
}
#endif
switch (req->bRequest) {
case USB_REQ_SET_CONFIGURATION:
logf("usb_core: SET_CONFIG");
usb_drv_cancel_all_transfers();
if (req->wValue){
usb_state = CONFIGURED;
#ifdef USB_STORAGE
if(usb_core_storage_enabled)
usb_storage_control_request(req);
#endif
#ifdef USB_SERIAL
if(usb_core_serial_enabled)
usb_serial_control_request(req);
#endif
}
else {
usb_state = ADDRESS;
}
ack_control(req);
break;
case USB_REQ_GET_CONFIGURATION: {
logf("usb_core: GET_CONFIG");
if (usb_state == ADDRESS)
response_data[0] = 0;
else
response_data[0] = 1;
if(usb_drv_send(EP_CONTROL, response_data, 1)!= 0)
break;
ack_control(req);
break;
}
case USB_REQ_SET_INTERFACE:
logf("usb_core: SET_INTERFACE");
ack_control(req);
break;
case USB_REQ_GET_INTERFACE:
logf("usb_core: GET_INTERFACE");
response_data[0] = 0;
if(usb_drv_send(EP_CONTROL, response_data, 1)!=0)
break;
ack_control(req);
break;
case USB_REQ_CLEAR_FEATURE:
logf("usb_core: CLEAR_FEATURE");
if (req->wValue)
usb_drv_stall(req->wIndex & 0xf, false,(req->wIndex & 0x80) !=0);
else
usb_drv_stall(req->wIndex & 0xf, false,(req->wIndex & 0x80) !=0);
ack_control(req);
break;
case USB_REQ_SET_FEATURE:
logf("usb_core: SET_FEATURE");
switch(req->bRequestType & 0x0f){
case 0: /* Device */
if(req->wValue == 2) { /* TEST_MODE */
int mode=req->wIndex>>8;
ack_control(req);
usb_drv_set_test_mode(mode);
}
break;
case 2: /* Endpoint */
if (req->wValue)
usb_drv_stall(req->wIndex & 0xf, true,(req->wIndex & 0x80) !=0);
else
usb_drv_stall(req->wIndex & 0xf, false,(req->wIndex & 0x80) !=0);
ack_control(req);
break;
default:
break;
}
break;
case USB_REQ_SET_ADDRESS: {
unsigned char address = req->wValue;
logf("usb_core: SET_ADR %d", address);
if(ack_control(req)!=0)
break;
usb_drv_cancel_all_transfers();
usb_address = address;
usb_drv_set_address(usb_address);
usb_state = ADDRESS;
break;
}
case USB_REQ_GET_STATUS: {
response_data[0]= 0;
response_data[1]= 0;
logf("usb_core: GET_STATUS");
if(req->wIndex>0) {
if(usb_drv_stalled(req->wIndex&0xf,(req->wIndex&0x80)!=0))
response_data[0] = 1;
}
logf("usb_core: %X %X",response_data[0],response_data[1]);
if(usb_drv_send(EP_CONTROL, response_data, 2)!=0)
break;
ack_control(req);
break;
}
case USB_REQ_GET_DESCRIPTOR: {
int index = req->wValue & 0xff;
int length = req->wLength;
int size;
const void* ptr = NULL;
logf("usb_core: GET_DESC %d", req->wValue >> 8);
switch (req->wValue >> 8) { /* type */
case USB_DT_DEVICE:
ptr = &device_descriptor;
size = sizeof(struct usb_device_descriptor);
break;
case USB_DT_OTHER_SPEED_CONFIG:
case USB_DT_CONFIG: {
int max_packet_size;
int interface_number=0;
if(req->wValue >> 8 == USB_DT_CONFIG) {
if(usb_drv_port_speed()) {
max_packet_size=512;
}
else {
max_packet_size=64;
}
config_descriptor.bDescriptorType=USB_DT_CONFIG;
}
else {
if(usb_drv_port_speed()) {
max_packet_size=64;
}
else {
max_packet_size=512;
}
config_descriptor.bDescriptorType=USB_DT_OTHER_SPEED_CONFIG;
}
size = sizeof(struct usb_config_descriptor);
#ifdef USB_CHARGING_ONLY
if(usb_core_charging_enabled){
charging_interface_descriptor.bInterfaceNumber=interface_number;
interface_number++;
memcpy(&response_data[size],&charging_interface_descriptor,sizeof(struct usb_interface_descriptor));
size += sizeof(struct usb_interface_descriptor);
}
#endif
#ifdef USB_STORAGE
if(usb_core_storage_enabled){
mass_storage_ep_in_descriptor.wMaxPacketSize=max_packet_size;
mass_storage_ep_out_descriptor.wMaxPacketSize=max_packet_size;
mass_storage_interface_descriptor.bInterfaceNumber=interface_number;
interface_number++;
memcpy(&response_data[size],&mass_storage_interface_descriptor,sizeof(struct usb_interface_descriptor));
size += sizeof(struct usb_interface_descriptor);
memcpy(&response_data[size],&mass_storage_ep_in_descriptor,sizeof(struct usb_endpoint_descriptor));
size += sizeof(struct usb_endpoint_descriptor);
memcpy(&response_data[size],&mass_storage_ep_out_descriptor,sizeof(struct usb_endpoint_descriptor));
size += sizeof(struct usb_endpoint_descriptor);
}
#endif
#ifdef USB_SERIAL
if(usb_core_serial_enabled){
serial_ep_in_descriptor.wMaxPacketSize=max_packet_size;
serial_ep_out_descriptor.wMaxPacketSize=max_packet_size;
serial_interface_descriptor.bInterfaceNumber=interface_number;
interface_number++;
memcpy(&response_data[size],&serial_interface_descriptor,sizeof(struct usb_interface_descriptor));
size += sizeof(struct usb_interface_descriptor);
memcpy(&response_data[size],&serial_ep_in_descriptor,sizeof(struct usb_endpoint_descriptor));
size += sizeof(struct usb_endpoint_descriptor);
memcpy(&response_data[size],&serial_ep_out_descriptor,sizeof(struct usb_endpoint_descriptor));
size += sizeof(struct usb_endpoint_descriptor);
}
#endif
#ifdef USB_BENCHMARK
if(usb_core_benchmark_enabled){
benchmark_ep_in_descriptor.wMaxPacketSize=max_packet_size;
benchmark_ep_out_descriptor.wMaxPacketSize=max_packet_size;
config_descriptor.bNumInterfaces=interface_number;
memcpy(&response_data[size],&benchmark_interface_descriptor,sizeof(struct usb_interface_descriptor));
size += sizeof(struct usb_interface_descriptor);
memcpy(&response_data[size],&benchmark_ep_in_descriptor,sizeof(struct usb_endpoint_descriptor));
size += sizeof(struct usb_endpoint_descriptor);
memcpy(&response_data[size],&benchmark_ep_out_descriptor,sizeof(struct usb_endpoint_descriptor));
size += sizeof(struct usb_endpoint_descriptor);
}
#endif
config_descriptor.wTotalLength = size;
memcpy(&response_data[0],&config_descriptor,sizeof(struct usb_config_descriptor));
ptr = response_data;
break;
}
case USB_DT_STRING:
logf("STRING %d",index);
if ((unsigned)index < (sizeof(usb_strings)/sizeof(struct usb_string_descriptor*))) {
size = usb_strings[index]->bLength;
memcpy(&response_data[0],usb_strings[index],size);
ptr = response_data;
}
else {
logf("bad string id %d", index);
usb_drv_stall(EP_CONTROL, true,true);
}
break;
case USB_DT_DEVICE_QUALIFIER:
ptr = &qualifier_descriptor;
size = sizeof (struct usb_qualifier_descriptor);
break;
default:
logf("bad desc %d", req->wValue >> 8);
usb_drv_stall(EP_CONTROL, true,true);
break;
}
if (ptr) {
length = MIN(size, length);
if(usb_drv_send(EP_CONTROL, (void*)UNCACHED_ADDR(ptr), length)!=0)
break;
}
ack_control(req);
break;
} /* USB_REQ_GET_DESCRIPTOR */
default:
#ifdef USB_STORAGE
/* does usb_storage know this request? */
if (!usb_storage_control_request(req))
#endif
#ifdef USB_SERIAL
/* does usb_serial know this request? */
if (!usb_serial_control_request(req))
#endif
{
/* nope. flag error */
logf("usb bad req %d", req->bRequest);
usb_drv_stall(EP_CONTROL, true,true);
ack_control(req);
}
break;
}
logf("control handled");
}
/* called by usb_drv_int() */
void usb_core_bus_reset(void)
{
usb_address = 0;
usb_state = DEFAULT;
}
/* called by usb_drv_transfer_completed() */
void usb_core_transfer_complete(int endpoint, bool in, int status,int length)
{
#if defined(USB_CHARGING_ONLY) || defined(USB_STORAGE)
(void)in;
#endif
switch (endpoint) {
case EP_CONTROL:
/* already handled */
break;
default:
events[endpoint].endpoint=endpoint;
events[endpoint].in=in;
events[endpoint].data=0;
events[endpoint].status=status;
events[endpoint].length=length;
/* All other endoints. Let the thread deal with it */
usb_signal_transfer_completion(&events[endpoint]);
break;
}
}
/* called by usb_drv_int() */
void usb_core_control_request(struct usb_ctrlrequest* req)
{
events[0].endpoint=0;
events[0].in=0;
events[0].data=(void *)req;
events[0].status=0;
events[0].length=0;
logf("ctrl received %ld",current_tick);
usb_signal_transfer_completion(&events[0]);
}
static int ack_control(struct usb_ctrlrequest* req)
{
if (req->bRequestType & 0x80)
return usb_drv_recv(EP_CONTROL, NULL, 0);
else
return usb_drv_send(EP_CONTROL, NULL, 0);
}
Reference in a new issue View git blame Copy permalink