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changing usbd driver open() return type, add max_len

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only done with cdc and msc, push this interim for feedback first
This commit is contained in:
hathach 2020-05-27 19:01:59 +07:00
parent de88294e05
commit e340404968
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GPG Key ID: 2FA891220FBFD581
5 changed files with 54 additions and 42 deletions
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26
src/class/cdc/cdc_device.c
View File

@ -222,14 +222,16 @@ void cdcd_reset(uint8_t rhport)
}
}
bool cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_length)
uint16_t cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
{
// Only support ACM subclass
TU_VERIFY ( TUSB_CLASS_CDC == itf_desc->bInterfaceClass &&
CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass);
CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass, 0);
// Note: 0xFF can be used with RNDIS
TU_VERIFY(tu_within(CDC_COMM_PROTOCOL_NONE, itf_desc->bInterfaceProtocol, CDC_COMM_PROTOCOL_ATCOMMAND_CDMA));
TU_VERIFY(tu_within(CDC_COMM_PROTOCOL_NONE, itf_desc->bInterfaceProtocol, CDC_COMM_PROTOCOL_ATCOMMAND_CDMA), 0);
uint16_t len = 0;
// Find available interface
cdcd_interface_t * p_cdc = NULL;
@ -242,29 +244,29 @@ bool cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t
break;
}
}
TU_ASSERT(p_cdc);
TU_ASSERT(p_cdc, 0);
//------------- Control Interface -------------//
p_cdc->itf_num = itf_desc->bInterfaceNumber;
uint8_t const * p_desc = tu_desc_next( itf_desc );
(*p_length) = sizeof(tusb_desc_interface_t);
len = sizeof(tusb_desc_interface_t);
// Communication Functional Descriptors
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) )
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) && len <= max_len )
{
(*p_length) += tu_desc_len(p_desc);
len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
}
if ( TUSB_DESC_ENDPOINT == tu_desc_type(p_desc) )
{
// notification endpoint if any
TU_ASSERT( usbd_edpt_open(rhport, (tusb_desc_endpoint_t const *) p_desc) );
TU_ASSERT( usbd_edpt_open(rhport, (tusb_desc_endpoint_t const *) p_desc), 0 );
p_cdc->ep_notif = ((tusb_desc_endpoint_t const *) p_desc)->bEndpointAddress;
(*p_length) += tu_desc_len(p_desc);
len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
}
@ -276,15 +278,15 @@ bool cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t
p_desc = tu_desc_next(p_desc);
// Open endpoint pair
TU_ASSERT( usbd_open_edpt_pair(rhport, p_desc, 2, TUSB_XFER_BULK, &p_cdc->ep_out, &p_cdc->ep_in) );
TU_ASSERT( usbd_open_edpt_pair(rhport, p_desc, 2, TUSB_XFER_BULK, &p_cdc->ep_out, &p_cdc->ep_in), 0 );
(*p_length) += sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
len += sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
}
// Prepare for incoming data
_prep_out_transaction(cdc_id);
return true;
return len;
}
// Invoked when class request DATA stage is finished.

12
src/class/cdc/cdc_device.h
View File

@ -229,12 +229,12 @@ static inline uint32_t tud_cdc_write_available(void)
//--------------------------------------------------------------------+
// INTERNAL USBD-CLASS DRIVER API
//--------------------------------------------------------------------+
void cdcd_init (void);
void cdcd_reset (uint8_t rhport);
bool cdcd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_length);
bool cdcd_control_request (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_control_complete (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
void cdcd_init (void);
void cdcd_reset (uint8_t rhport);
uint16_t cdcd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len);
bool cdcd_control_request (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_control_complete (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
#ifdef __cplusplus
}

16
src/class/msc/msc_device.c
View File

@ -154,25 +154,29 @@ void mscd_reset(uint8_t rhport)
tu_memclr(&_mscd_itf, sizeof(mscd_interface_t));
}
bool mscd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_len)
uint16_t mscd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
{
// only support SCSI's BOT protocol
TU_VERIFY(TUSB_CLASS_MSC == itf_desc->bInterfaceClass &&
MSC_SUBCLASS_SCSI == itf_desc->bInterfaceSubClass &&
MSC_PROTOCOL_BOT == itf_desc->bInterfaceProtocol);
MSC_PROTOCOL_BOT == itf_desc->bInterfaceProtocol, 0);
// Max length mus be at least 1 interface + 2 endpoints
TU_VERIFY(max_len >= sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t), 0);
uint16_t len = 0;
mscd_interface_t * p_msc = &_mscd_itf;
// Open endpoint pair
TU_ASSERT( usbd_open_edpt_pair(rhport, tu_desc_next(itf_desc), 2, TUSB_XFER_BULK, &p_msc->ep_out, &p_msc->ep_in) );
TU_ASSERT( usbd_open_edpt_pair(rhport, tu_desc_next(itf_desc), 2, TUSB_XFER_BULK, &p_msc->ep_out, &p_msc->ep_in), 0 );
p_msc->itf_num = itf_desc->bInterfaceNumber;
(*p_len) = sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
len = sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
// Prepare for Command Block Wrapper
TU_ASSERT( usbd_edpt_xfer(rhport, p_msc->ep_out, (uint8_t*) &p_msc->cbw, sizeof(msc_cbw_t)) );
TU_ASSERT( usbd_edpt_xfer(rhport, p_msc->ep_out, (uint8_t*) &p_msc->cbw, sizeof(msc_cbw_t)), 0 );
return true;
return len;
}
// Handle class control request

12
src/class/msc/msc_device.h
View File

@ -151,12 +151,12 @@ TU_ATTR_WEAK bool tud_msc_is_writable_cb(uint8_t lun);
//--------------------------------------------------------------------+
// Internal Class Driver API
//--------------------------------------------------------------------+
void mscd_init (void);
void mscd_reset (uint8_t rhport);
bool mscd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_length);
bool mscd_control_request (uint8_t rhport, tusb_control_request_t const * p_request);
bool mscd_control_complete (uint8_t rhport, tusb_control_request_t const * p_request);
bool mscd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
void mscd_init (void);
void mscd_reset (uint8_t rhport);
uint16_t mscd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len);
bool mscd_control_request (uint8_t rhport, tusb_control_request_t const * p_request);
bool mscd_control_complete (uint8_t rhport, tusb_control_request_t const * p_request);
bool mscd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
#ifdef __cplusplus
}

30
src/device/usbd.c
View File

@ -85,13 +85,13 @@ typedef struct
char const* name;
#endif
void (* init ) (void);
void (* reset ) (uint8_t rhport);
bool (* open ) (uint8_t rhport, tusb_desc_interface_t const * desc_intf, uint16_t* p_length);
bool (* control_request ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* control_complete ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* xfer_cb ) (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
void (* sof ) (uint8_t rhport); /* optional */
void (* init ) (void);
void (* reset ) (uint8_t rhport);
uint16_t (* open ) (uint8_t rhport, tusb_desc_interface_t const * desc_intf, uint16_t max_len);
bool (* control_request ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* control_complete ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* xfer_cb ) (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
void (* sof ) (uint8_t rhport); /* optional */
} usbd_class_driver_t;
static usbd_class_driver_t const _usbd_driver[] =
@ -713,6 +713,8 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
TU_ASSERT( TUSB_DESC_INTERFACE == tu_desc_type(p_desc) );
tusb_desc_interface_t const * desc_itf = (tusb_desc_interface_t const*) p_desc;
uint16_t const remaining_len = desc_end-p_desc;
uint8_t drv_id;
uint16_t drv_len;
@ -720,13 +722,17 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
{
usbd_class_driver_t const *driver = &_usbd_driver[drv_id];
drv_len = 0;
if ( driver->open(rhport, desc_itf, &drv_len) )
drv_len = driver->open(rhport, desc_itf, remaining_len);
if ( drv_len > 0 )
{
// Open successfully, check if length is correct
TU_ASSERT( sizeof(tusb_desc_interface_t) <= drv_len && drv_len <= remaining_len);
// Interface number must not be used already
TU_ASSERT( DRVID_INVALID == _usbd_dev.itf2drv[desc_itf->bInterfaceNumber] );
TU_LOG2(" %s opened\r\n", _usbd_driver[drv_id].name);
TU_LOG2(" %s opened\r\n", driver->name);
_usbd_dev.itf2drv[desc_itf->bInterfaceNumber] = drv_id;
// If IAD exist, assign all interfaces to the same driver
@ -748,8 +754,8 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
}
}
// Assert if cannot find supported driver
TU_ASSERT( drv_id < USBD_CLASS_DRIVER_COUNT && drv_len >= sizeof(tusb_desc_interface_t) );
// Failed if cannot find supported driver
TU_ASSERT(drv_id < USBD_CLASS_DRIVER_COUNT);
mark_interface_endpoint(_usbd_dev.ep2drv, p_desc, drv_len, drv_id); // TODO refactor