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usbd pre-compute total interface length without replying on driver open

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This commit is contained in:
hathach 2021-09-14 12:47:20 +07:00
parent 103a11d449
commit 5404d6d8ae
2 changed files with 9 additions and 11 deletions
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18
src/device/usbd.c
View File

@ -880,7 +880,7 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
// Parse configuration descriptor
_usbd_dev.remote_wakeup_support = (desc_cfg->bmAttributes & TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP) ? 1 : 0;
_usbd_dev.self_powered = (desc_cfg->bmAttributes & TUSB_DESC_CONFIG_ATT_SELF_POWERED) ? 1 : 0;
_usbd_dev.self_powered = (desc_cfg->bmAttributes & TUSB_DESC_CONFIG_ATT_SELF_POWERED ) ? 1 : 0;
// Parse interface descriptor
uint8_t const * p_desc = ((uint8_t const*) desc_cfg) + sizeof(tusb_desc_configuration_t);
@ -900,26 +900,22 @@ 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;
// Interface number must not be used already
TU_ASSERT(DRVID_INVALID == _usbd_dev.itf2drv[desc_itf->bInterfaceNumber]);
// TODO usbd can calculate the total length used for driver --> driver open() does not need to calculate it
// uint16_t const drv_len = tu_desc_get_interface_total_len(desc_itf, desc_iad ? desc_iad->bInterfaceCount : 1, desc_end-p_desc);
uint16_t const drv_len = tu_desc_get_interface_total_len(desc_itf, desc_iad ? desc_iad->bInterfaceCount : 1, desc_end-p_desc);
TU_ASSERT(drv_len);
// Find driver for this interface
uint8_t drv_id;
for (drv_id = 0; drv_id < TOTAL_DRIVER_COUNT; drv_id++)
{
usbd_class_driver_t const *driver = get_driver(drv_id);
uint16_t const drv_len = driver->open(rhport, desc_itf, remaining_len);
if ( drv_len > 0 )
if ( driver->open(rhport, desc_itf, drv_len) )
{
// Open successfully, check if length is correct
TU_ASSERT( sizeof(tusb_desc_interface_t) <= drv_len && drv_len <= remaining_len);
TU_LOG2(" %s opened\r\n", driver->name);
// bind interface to found driver
@ -941,14 +937,16 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
// bind all endpoints to found driver
tu_edpt_bind_driver(_usbd_dev.ep2drv, desc_itf, drv_len, drv_id);
p_desc += drv_len; // next interface
break; // exit driver find loop
}
}
// Failed if cannot find supported driver
// Failed if there is no supported drivers
TU_ASSERT(drv_id < TOTAL_DRIVER_COUNT);
// next Interface or IAD descriptor
p_desc += drv_len;
}
// invoke callback

2
src/host/usbh.c
View File

@ -989,7 +989,7 @@ static bool parse_configuration_descriptor(uint8_t dev_addr, tusb_desc_configura
if ( TUSB_DESC_INTERFACE_ASSOCIATION == tu_desc_type(p_desc) )
{
desc_iad = (tusb_desc_interface_assoc_t const *) p_desc;
p_desc = tu_desc_next(p_desc);
p_desc = tu_desc_next(p_desc); // next to Interface
}
TU_ASSERT( TUSB_DESC_INTERFACE == tu_desc_type(p_desc) );