Merge pull request #1403 from hathach/host-edpt-xfer

Host edpt xfer

5 files changed, 219 insertions, 195 deletions

diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c
index 8ca3dfbcb..044085e81 100644
--- a/src/class/cdc/cdc_host.c
+++ b/src/class/cdc/cdc_host.c
@@ -120,32 +120,35 @@ bool tuh_cdc_receive(uint8_t dev_addr, void * p_buffer, uint32_t length, bool is
   return usbh_edpt_xfer(dev_addr, ep_in, p_buffer, length);
 }
 
-bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_control_xfer_cb_t complete_cb)
+bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_xfer_cb_t complete_cb)
 {
   cdch_data_t const * p_cdc = get_itf(dev_addr);
 
-  tuh_control_xfer_t const xfer =
+  tusb_control_request_t const request =
   {
-    .request =
+    .bmRequestType_bit =
     {
-      .bmRequestType_bit =
-      {
-        .recipient = TUSB_REQ_RCPT_INTERFACE,
-        .type      = TUSB_REQ_TYPE_CLASS,
-        .direction = TUSB_DIR_OUT
-      },
-      .bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE,
-      .wValue   = (rts ? 2 : 0) | (dtr ? 1 : 0),
-      .wIndex   = p_cdc->itf_num,
-      .wLength  = 0
+      .recipient = TUSB_REQ_RCPT_INTERFACE,
+      .type      = TUSB_REQ_TYPE_CLASS,
+      .direction = TUSB_DIR_OUT
     },
+    .bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE,
+    .wValue   = (rts ? 2 : 0) | (dtr ? 1 : 0),
+    .wIndex   = p_cdc->itf_num,
+    .wLength  = 0
+  };
 
+  tuh_xfer_t xfer =
+  {
+    .daddr       = dev_addr,
+    .ep_addr     = 0,
+    .setup       = &request,
     .buffer      = NULL,
     .complete_cb = complete_cb,
-    .user_arg    = 0
+    .user_data    = 0
   };
 
-  return tuh_control_xfer(dev_addr, &xfer);
+  return tuh_control_xfer(&xfer);
 }
 
 //--------------------------------------------------------------------+
@@ -158,6 +161,7 @@ void cdch_init(void)
 
 bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *itf_desc, uint16_t max_len)
 {
+  (void) rhport;
   (void) max_len;
 
   // Only support ACM subclass
@@ -193,7 +197,7 @@ bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *it
     // notification endpoint
     tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const *) p_desc;
 
-    TU_ASSERT( usbh_edpt_open(rhport, dev_addr, desc_ep) );
+    TU_ASSERT( tuh_edpt_open(dev_addr, desc_ep) );
     p_cdc->ep_notif = desc_ep->bEndpointAddress;
 
     drv_len += tu_desc_len(p_desc);
@@ -214,7 +218,7 @@ bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *it
       tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc;
       TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && TUSB_XFER_BULK == desc_ep->bmAttributes.xfer);
 
-      TU_ASSERT(usbh_edpt_open(rhport, dev_addr, desc_ep));
+      TU_ASSERT(tuh_edpt_open(dev_addr, desc_ep));
 
       if ( tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN )
       {
diff --git a/src/class/cdc/cdc_host.h b/src/class/cdc/cdc_host.h
index 67162a0ca..33dbd2efb 100644
--- a/src/class/cdc/cdc_host.h
+++ b/src/class/cdc/cdc_host.h
@@ -42,14 +42,14 @@
  * \defgroup   CDC_Serial_Host Host
  * @{ */
 
-bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_control_xfer_cb_t complete_cb);
+bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_xfer_cb_t complete_cb);
 
-static inline bool tuh_cdc_connect(uint8_t dev_addr, tuh_control_xfer_cb_t complete_cb)
+static inline bool tuh_cdc_connect(uint8_t dev_addr, tuh_xfer_cb_t complete_cb)
 {
   return tuh_cdc_set_control_line_state(dev_addr, true, true, complete_cb);
 }
 
-static inline bool tuh_cdc_disconnect(uint8_t dev_addr, tuh_control_xfer_cb_t complete_cb)
+static inline bool tuh_cdc_disconnect(uint8_t dev_addr, tuh_xfer_cb_t complete_cb)
 {
   return tuh_cdc_set_control_line_state(dev_addr, false, false, complete_cb);
 }
diff --git a/src/class/hid/hid.h b/src/class/hid/hid.h
index 940454bd9..44a464be1 100644
--- a/src/class/hid/hid.h
+++ b/src/class/hid/hid.h
@@ -43,7 +43,7 @@
 /** \defgroup ClassDriver_HID_Common Common Definitions
  *  @{ */
 
- /// USB HID Descriptor
+/// USB HID Descriptor
 typedef struct TU_ATTR_PACKED
 {
   uint8_t  bLength;         /**< Numeric expression that is the total size of the HID descriptor */
diff --git a/src/class/hid/hid_host.c b/src/class/hid/hid_host.c
index a825858ab..ce3d1598c 100644
--- a/src/class/hid/hid_host.c
+++ b/src/class/hid/hid_host.c
@@ -103,70 +103,80 @@ uint8_t tuh_hid_get_protocol(uint8_t dev_addr, uint8_t instance)
   return hid_itf->protocol_mode;
 }
 
-static bool set_protocol_complete(uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result)
+static void set_protocol_complete(tuh_xfer_t* xfer)
 {
-  uint8_t const itf_num     = (uint8_t) xfer->request.wIndex;
-  uint8_t const instance    = get_instance_id_by_itfnum(dev_addr, itf_num);
-  hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
+  uint8_t const itf_num     = (uint8_t) tu_le16toh(xfer->setup->wIndex);
+  uint8_t const daddr       = xfer->daddr;
+  uint8_t const instance    = get_instance_id_by_itfnum(daddr, itf_num);
+  hidh_interface_t* hid_itf = get_instance(daddr, instance);
 
-  if (XFER_RESULT_SUCCESS == result) hid_itf->protocol_mode = (uint8_t) xfer->request.wValue;
+  if (XFER_RESULT_SUCCESS == xfer->result)
+  {
+    hid_itf->protocol_mode = (uint8_t) tu_le16toh(xfer->setup->wValue);
+  }
 
   if (tuh_hid_set_protocol_complete_cb)
   {
-    tuh_hid_set_protocol_complete_cb(dev_addr, instance, hid_itf->protocol_mode);
+    tuh_hid_set_protocol_complete_cb(daddr, instance, hid_itf->protocol_mode);
   }
-
-  return true;
 }
 
-bool tuh_hid_set_protocol(uint8_t dev_addr, uint8_t instance, uint8_t protocol)
-{
-  hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
-  TU_VERIFY(hid_itf->itf_protocol != HID_ITF_PROTOCOL_NONE);
 
+static bool _hidh_set_protocol(uint8_t dev_addr, uint8_t itf_num, uint8_t protocol, tuh_xfer_cb_t complete_cb, uintptr_t user_data)
+{
   TU_LOG2("HID Set Protocol = %d\r\n", protocol);
 
-  tuh_control_xfer_t const xfer =
+  tusb_control_request_t const request =
   {
-    .request =
+    .bmRequestType_bit =
     {
-      .bmRequestType_bit =
-      {
-        .recipient = TUSB_REQ_RCPT_INTERFACE,
-        .type      = TUSB_REQ_TYPE_CLASS,
-        .direction = TUSB_DIR_OUT
-      },
-      .bRequest = HID_REQ_CONTROL_SET_PROTOCOL,
-      .wValue   = protocol,
-      .wIndex   = hid_itf->itf_num,
-      .wLength  = 0
+      .recipient = TUSB_REQ_RCPT_INTERFACE,
+      .type      = TUSB_REQ_TYPE_CLASS,
+      .direction = TUSB_DIR_OUT
     },
+    .bRequest = HID_REQ_CONTROL_SET_PROTOCOL,
+    .wValue   = protocol,
+    .wIndex   = itf_num,
+    .wLength  = 0
+  };
 
+  tuh_xfer_t xfer =
+  {
+    .daddr       = dev_addr,
+    .ep_addr     = 0,
+    .setup       = &request,
     .buffer      = NULL,
-    .complete_cb = set_protocol_complete,
-    .user_arg    = 0
+    .complete_cb = complete_cb,
+    .user_data   = user_data
   };
 
-  TU_ASSERT( tuh_control_xfer(dev_addr, &xfer) );
+  TU_ASSERT( tuh_control_xfer(&xfer) );
   return true;
 }
 
-static bool set_report_complete(uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result)
+bool tuh_hid_set_protocol(uint8_t dev_addr, uint8_t instance, uint8_t protocol)
+{
+  hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
+  TU_VERIFY(hid_itf->itf_protocol != HID_ITF_PROTOCOL_NONE);
+
+  return _hidh_set_protocol(dev_addr, hid_itf->itf_num, protocol, set_protocol_complete, 0);
+}
+
+static void set_report_complete(tuh_xfer_t* xfer)
 {
   TU_LOG2("HID Set Report complete\r\n");
 
   if (tuh_hid_set_report_complete_cb)
   {
-    uint8_t const itf_num     = (uint8_t) xfer->request.wIndex;
-    uint8_t const instance    = get_instance_id_by_itfnum(dev_addr, itf_num);
+    uint8_t const itf_num     = (uint8_t) tu_le16toh(xfer->setup->wIndex);
+    uint8_t const instance    = get_instance_id_by_itfnum(xfer->daddr, itf_num);
 
-    uint8_t const report_type = tu_u16_high(xfer->request.wValue);
-    uint8_t const report_id   = tu_u16_low(xfer->request.wValue);
+    uint8_t const report_type = tu_u16_high(xfer->setup->wValue);
+    uint8_t const report_id   = tu_u16_low(xfer->setup->wValue);
 
-    tuh_hid_set_report_complete_cb(dev_addr, instance, report_id, report_type, (result == XFER_RESULT_SUCCESS) ? xfer->request.wLength : 0);
+    tuh_hid_set_report_complete_cb(xfer->daddr, instance, report_id, report_type,
+                                   (xfer->result == XFER_RESULT_SUCCESS) ? xfer->setup->wLength : 0);
   }
-
-  return true;
 }
 
 bool tuh_hid_set_report(uint8_t dev_addr, uint8_t instance, uint8_t report_id, uint8_t report_type, void* report, uint16_t len)
@@ -174,28 +184,64 @@ bool tuh_hid_set_report(uint8_t dev_addr, uint8_t instance, uint8_t report_id, u
   hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
   TU_LOG2("HID Set Report: id = %u, type = %u, len = %u\r\n", report_id, report_type, len);
 
-  tuh_control_xfer_t const xfer =
+  tusb_control_request_t const request =
   {
-    .request =
+    .bmRequestType_bit =
     {
-      .bmRequestType_bit =
-      {
-        .recipient = TUSB_REQ_RCPT_INTERFACE,
-        .type      = TUSB_REQ_TYPE_CLASS,
-        .direction = TUSB_DIR_OUT
-      },
-      .bRequest = HID_REQ_CONTROL_SET_REPORT,
-      .wValue   = tu_u16(report_type, report_id),
-      .wIndex   = hid_itf->itf_num,
-      .wLength  = len
+      .recipient = TUSB_REQ_RCPT_INTERFACE,
+      .type      = TUSB_REQ_TYPE_CLASS,
+      .direction = TUSB_DIR_OUT
     },
+    .bRequest = HID_REQ_CONTROL_SET_REPORT,
+    .wValue   = tu_u16(report_type, report_id),
+    .wIndex   = hid_itf->itf_num,
+    .wLength  = len
+  };
 
+  tuh_xfer_t xfer =
+  {
+    .daddr       = dev_addr,
+    .ep_addr     = 0,
+    .setup       = &request,
     .buffer      = report,
     .complete_cb = set_report_complete,
-    .user_arg    = 0
+    .user_data   = 0
+  };
+
+  TU_ASSERT( tuh_control_xfer(&xfer) );
+  return true;
+}
+
+static bool _hidh_set_idle(uint8_t dev_addr, uint8_t itf_num, uint16_t idle_rate, tuh_xfer_cb_t complete_cb, uintptr_t user_data)
+{
+  // SET IDLE request, device can stall if not support this request
+  TU_LOG2("HID Set Idle \r\n");
+  tusb_control_request_t const request =
+  {
+    .bmRequestType_bit =
+    {
+      .recipient = TUSB_REQ_RCPT_INTERFACE,
+      .type      = TUSB_REQ_TYPE_CLASS,
+      .direction = TUSB_DIR_OUT
+    },
+    .bRequest = HID_REQ_CONTROL_SET_IDLE,
+    .wValue   = idle_rate,
+    .wIndex   = itf_num,
+    .wLength  = 0
   };
 
-  TU_ASSERT( tuh_control_xfer(dev_addr, &xfer) );
+  tuh_xfer_t xfer =
+  {
+    .daddr       = dev_addr,
+    .ep_addr     = 0,
+    .setup       = &request,
+    .buffer      = NULL,
+    .complete_cb = complete_cb,
+    .user_data   = user_data
+  };
+
+  TU_ASSERT( tuh_control_xfer(&xfer) );
+
   return true;
 }
 
@@ -210,7 +256,13 @@ bool tuh_hid_receive_report(uint8_t dev_addr, uint8_t instance)
   // claim endpoint
   TU_VERIFY( usbh_edpt_claim(dev_addr, hid_itf->ep_in) );
 
-  return usbh_edpt_xfer(dev_addr, hid_itf->ep_in, hid_itf->epin_buf, hid_itf->epin_size);
+  if ( !usbh_edpt_xfer(dev_addr, hid_itf->ep_in, hid_itf->epin_buf, hid_itf->epin_size) )
+  {
+    usbh_edpt_claim(dev_addr, hid_itf->ep_in);
+    return false;
+  }
+
+  return true;
 }
 
 //bool tuh_n_hid_n_ready(uint8_t dev_addr, uint8_t instance)
@@ -270,14 +322,9 @@ void hidh_close(uint8_t dev_addr)
 // Enumeration
 //--------------------------------------------------------------------+
 
-static bool config_set_protocol             (uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result);
-static bool config_get_report_desc          (uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result);
-static bool config_get_report_desc_complete (uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result);
-
-static void config_driver_mount_complete(uint8_t dev_addr, uint8_t instance, uint8_t const* desc_report, uint16_t desc_len);
-
 bool hidh_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *desc_itf, uint16_t max_len)
 {
+  (void) rhport;
   (void) max_len;
 
   TU_VERIFY(TUSB_CLASS_HID == desc_itf->bInterfaceClass);
@@ -309,7 +356,7 @@ bool hidh_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *de
   for(int i = 0; i < desc_itf->bNumEndpoints; i++)
   {
     TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType);
-    TU_ASSERT( usbh_edpt_open(rhport, dev_addr, desc_ep) );
+    TU_ASSERT( tuh_edpt_open(dev_addr, desc_ep) );
 
     if(tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN)
     {
@@ -341,121 +388,93 @@ bool hidh_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *de
   return true;
 }
 
-bool hidh_set_config(uint8_t dev_addr, uint8_t itf_num)
-{
-  uint8_t const instance    = get_instance_id_by_itfnum(dev_addr, itf_num);
-  hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
-
-  // Idle rate = 0 mean only report when there is changes
-  uint16_t const idle_rate = 0;
-
-  // SET IDLE request, device can stall if not support this request
-  TU_LOG2("HID Set Idle \r\n");
-  tuh_control_xfer_t const xfer =
-  {
-    .request =
-    {
-      .bmRequestType_bit =
-      {
-        .recipient = TUSB_REQ_RCPT_INTERFACE,
-        .type      = TUSB_REQ_TYPE_CLASS,
-        .direction = TUSB_DIR_OUT
-      },
-      .bRequest = HID_REQ_CONTROL_SET_IDLE,
-      .wValue   = idle_rate,
-      .wIndex   = itf_num,
-      .wLength  = 0
-    },
-
-    .buffer      = NULL,
-    .complete_cb = (hid_itf->itf_protocol != HID_ITF_PROTOCOL_NONE) ? config_set_protocol : config_get_report_desc,
-    .user_arg    = 0
-  };
+//--------------------------------------------------------------------+
+// Set Configure
+//--------------------------------------------------------------------+
 
-  TU_ASSERT( tuh_control_xfer(dev_addr, &xfer) );
+enum {
+  CONFG_SET_IDLE,
+  CONFIG_SET_PROTOCOL,
+  CONFIG_GET_REPORT_DESC,
+  CONFIG_COMPLETE
+};
 
-  return true;
-}
+static void config_driver_mount_complete(uint8_t dev_addr, uint8_t instance, uint8_t const* desc_report, uint16_t desc_len);
+static void process_set_config(tuh_xfer_t* xfer);
 
-// Force device to work in BOOT protocol
-static bool config_set_protocol(uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result)
+bool hidh_set_config(uint8_t dev_addr, uint8_t itf_num)
 {
-  // Stall is a valid response for SET_IDLE, therefore we could ignore its result
-  (void) result;
-
-  uint8_t const itf_num     = (uint8_t) xfer->request.wIndex;
-  uint8_t const instance    = get_instance_id_by_itfnum(dev_addr, itf_num);
-  hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
+  tusb_control_request_t request;
+  request.wIndex = tu_htole16((uint16_t) itf_num);
 
-  TU_LOG2("HID Set Protocol to Boot Mode\r\n");
-  hid_itf->protocol_mode = HID_PROTOCOL_BOOT;
-  tuh_control_xfer_t const new_xfer =
-  {
-    .request =
-    {
-      .bmRequestType_bit =
-      {
-        .recipient = TUSB_REQ_RCPT_INTERFACE,
-        .type      = TUSB_REQ_TYPE_CLASS,
-        .direction = TUSB_DIR_OUT
-      },
-      .bRequest = HID_REQ_CONTROL_SET_PROTOCOL,
-      .wValue   = HID_PROTOCOL_BOOT,
-      .wIndex   = hid_itf->itf_num,
-      .wLength  = 0
-    },
+  tuh_xfer_t xfer;
+  xfer.daddr     = dev_addr;
+  xfer.result    = XFER_RESULT_SUCCESS;
+  xfer.setup     = &request;
+  xfer.user_data = CONFG_SET_IDLE;
 
-    .buffer      = NULL,
-    .complete_cb = config_get_report_desc,
-    .user_arg    = 0
-  };
+  // fake request to kick-off the set config process
+  process_set_config(&xfer);
 
-  TU_ASSERT( tuh_control_xfer(dev_addr, &new_xfer) );
   return true;
 }
 
-static bool config_get_report_desc(uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result)
+static void process_set_config(tuh_xfer_t* xfer)
 {
-  // We can be here after SET_IDLE or SET_PROTOCOL (boot device)
-  // Trigger assert if result is not successful with set protocol
-  if ( xfer->request.bRequest != HID_REQ_CONTROL_SET_IDLE )
+  // Stall is a valid response for SET_IDLE, therefore we could ignore its result
+  if ( xfer->setup->bRequest != HID_REQ_CONTROL_SET_IDLE )
   {
-    TU_ASSERT(result == XFER_RESULT_SUCCESS);
+    TU_ASSERT(xfer->result == XFER_RESULT_SUCCESS, );
   }
 
-  uint8_t const itf_num     = (uint8_t) xfer->request.wIndex;
-  uint8_t const instance    = get_instance_id_by_itfnum(dev_addr, itf_num);
-  hidh_interface_t* hid_itf = get_instance(dev_addr, instance);
+  uintptr_t const state = xfer->user_data;
+  uint8_t const itf_num = (uint8_t) tu_le16toh(xfer->setup->wIndex);
+  uint8_t const daddr   = xfer->daddr;
 
-  // Get Report Descriptor if possible
-  // using usbh enumeration buffer since report descriptor can be very long
-  if( hid_itf->report_desc_len > CFG_TUH_ENUMERATION_BUFSIZE )
-  {
-    TU_LOG2("HID Skip Report Descriptor since it is too large %u bytes\r\n", hid_itf->report_desc_len);
+  uint8_t const instance    = get_instance_id_by_itfnum(daddr, itf_num);
+  hidh_interface_t* hid_itf = get_instance(daddr, instance);
 
-    // Driver is mounted without report descriptor
-    config_driver_mount_complete(dev_addr, instance, NULL, 0);
-  }else
+  switch(state)
   {
-    TU_ASSERT(tuh_descriptor_get_hid_report(dev_addr, itf_num, hid_itf->report_desc_type, 0, usbh_get_enum_buf(), hid_itf->report_desc_len, config_get_report_desc_complete, 0));
-  }
+    case CONFG_SET_IDLE:
+    {
+      // Idle rate = 0 mean only report when there is changes
+      const uint16_t idle_rate = 0;
+      const uintptr_t next_state = (hid_itf->itf_protocol != HID_ITF_PROTOCOL_NONE) ? CONFIG_SET_PROTOCOL : CONFIG_GET_REPORT_DESC;
+      _hidh_set_idle(daddr, itf_num, idle_rate, process_set_config, next_state);
+    }
+    break;
 
-  return true;
-}
+    case CONFIG_SET_PROTOCOL:
+      _hidh_set_protocol(daddr, hid_itf->itf_num, HID_PROTOCOL_BOOT, process_set_config, CONFIG_GET_REPORT_DESC);
+    break;
 
-static bool config_get_report_desc_complete(uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result)
-{
-  TU_ASSERT(XFER_RESULT_SUCCESS == result);
+    case CONFIG_GET_REPORT_DESC:
+      // Get Report Descriptor if possible
+      // using usbh enumeration buffer since report descriptor can be very long
+      if( hid_itf->report_desc_len > CFG_TUH_ENUMERATION_BUFSIZE )
+      {
+        TU_LOG2("HID Skip Report Descriptor since it is too large %u bytes\r\n", hid_itf->report_desc_len);
 
-  uint8_t const itf_num      = (uint8_t) xfer->request.wIndex;
-  uint8_t const instance     = get_instance_id_by_itfnum(dev_addr, itf_num);
+        // Driver is mounted without report descriptor
+        config_driver_mount_complete(daddr, instance, NULL, 0);
+      }else
+      {
+        tuh_descriptor_get_hid_report(daddr, itf_num, hid_itf->report_desc_type, 0, usbh_get_enum_buf(), hid_itf->report_desc_len, process_set_config, CONFIG_COMPLETE);
+      }
+      break;
 
-  uint8_t const* desc_report = usbh_get_enum_buf();
-  uint16_t const desc_len    = xfer->request.wLength;
+    case CONFIG_COMPLETE:
+    {
+      uint8_t const* desc_report = usbh_get_enum_buf();
+      uint16_t const desc_len    = tu_le16toh(xfer->setup->wLength);
 
-  config_driver_mount_complete(dev_addr, instance, desc_report, desc_len);
+      config_driver_mount_complete(daddr, instance, desc_report, desc_len);
+    }
+    break;
 
-  return true;
+    default: break;
+  }
 }
 
 static void config_driver_mount_complete(uint8_t dev_addr, uint8_t instance, uint8_t const* desc_report, uint16_t desc_len)
diff --git a/src/class/msc/msc_host.c b/src/class/msc/msc_host.c
index c009e5088..c54a63f37 100644
--- a/src/class/msc/msc_host.c
+++ b/src/class/msc/msc_host.c
@@ -358,13 +358,14 @@ bool msch_xfer_cb(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t event, uint32
 // MSC Enumeration
 //--------------------------------------------------------------------+
 
-static bool config_get_maxlun_complete (uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result);
+static void config_get_maxlun_complete (tuh_xfer_t* xfer);
 static bool config_test_unit_ready_complete(uint8_t dev_addr, msc_cbw_t const* cbw, msc_csw_t const* csw);
 static bool config_request_sense_complete(uint8_t dev_addr, msc_cbw_t const* cbw, msc_csw_t const* csw);
 static bool config_read_capacity_complete(uint8_t dev_addr, msc_cbw_t const* cbw, msc_csw_t const* csw);
 
 bool msch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *desc_itf, uint16_t max_len)
 {
+  (void) rhport;
   TU_VERIFY (MSC_SUBCLASS_SCSI == desc_itf->bInterfaceSubClass &&
              MSC_PROTOCOL_BOT  == desc_itf->bInterfaceProtocol);
 
@@ -378,7 +379,7 @@ bool msch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *de
   for(uint32_t i=0; i<2; i++)
   {
     TU_ASSERT(TUSB_DESC_ENDPOINT == ep_desc->bDescriptorType && TUSB_XFER_BULK == ep_desc->bmAttributes.xfer);
-    TU_ASSERT(usbh_edpt_open(rhport, dev_addr, ep_desc));
+    TU_ASSERT(tuh_edpt_open(dev_addr, ep_desc));
 
     if ( tu_edpt_dir(ep_desc->bEndpointAddress) == TUSB_DIR_IN )
     {
@@ -405,47 +406,47 @@ bool msch_set_config(uint8_t dev_addr, uint8_t itf_num)
 
   //------------- Get Max Lun -------------//
   TU_LOG2("MSC Get Max Lun\r\n");
-  tuh_control_xfer_t const xfer =
+  tusb_control_request_t const request =
   {
-    .request =
+    .bmRequestType_bit =
     {
-      .bmRequestType_bit =
-      {
-        .recipient = TUSB_REQ_RCPT_INTERFACE,
-        .type      = TUSB_REQ_TYPE_CLASS,
-        .direction = TUSB_DIR_IN
-      },
-      .bRequest = MSC_REQ_GET_MAX_LUN,
-      .wValue   = 0,
-      .wIndex   = itf_num,
-      .wLength  = 1
+      .recipient = TUSB_REQ_RCPT_INTERFACE,
+      .type      = TUSB_REQ_TYPE_CLASS,
+      .direction = TUSB_DIR_IN
     },
+    .bRequest = MSC_REQ_GET_MAX_LUN,
+    .wValue   = 0,
+    .wIndex   = itf_num,
+    .wLength  = 1
+  };
 
+  tuh_xfer_t xfer =
+  {
+    .daddr       = dev_addr,
+    .ep_addr     = 0,
+    .setup       = &request,
     .buffer      = &p_msc->max_lun,
     .complete_cb = config_get_maxlun_complete,
-    .user_arg    = 0
+    .user_data    = 0
   };
-  TU_ASSERT(tuh_control_xfer(dev_addr, &xfer));
+  TU_ASSERT(tuh_control_xfer(&xfer));
 
   return true;
 }
 
-static bool config_get_maxlun_complete (uint8_t dev_addr, tuh_control_xfer_t const * xfer,  xfer_result_t result)
+static void config_get_maxlun_complete (tuh_xfer_t* xfer)
 {
-  (void) xfer;
-
-  msch_interface_t* p_msc = get_itf(dev_addr);
+  uint8_t const daddr = xfer->daddr;
+  msch_interface_t* p_msc = get_itf(daddr);
 
   // STALL means zero
-  p_msc->max_lun = (XFER_RESULT_SUCCESS == result) ? _msch_buffer[0] : 0;
+  p_msc->max_lun = (XFER_RESULT_SUCCESS == xfer->result) ? _msch_buffer[0] : 0;
   p_msc->max_lun++; // MAX LUN is minus 1 by specs
 
   // TODO multiple LUN support
   TU_LOG2("SCSI Test Unit Ready\r\n");
   uint8_t const lun = 0;
-  tuh_msc_test_unit_ready(dev_addr, lun, config_test_unit_ready_complete);
-
-  return true;
+  tuh_msc_test_unit_ready(daddr, lun, config_test_unit_ready_complete);
 }
 
 static bool config_test_unit_ready_complete(uint8_t dev_addr, msc_cbw_t const* cbw, msc_csw_t const* csw)
@@ -483,7 +484,7 @@ static bool config_read_capacity_complete(uint8_t dev_addr, msc_cbw_t const* cbw
   // Capacity response field: Block size and Last LBA are both Big-Endian
   scsi_read_capacity10_resp_t* resp = (scsi_read_capacity10_resp_t*) ((void*) _msch_buffer);
   p_msc->capacity[cbw->lun].block_count = tu_ntohl(resp->last_lba) + 1;
-  p_msc->capacity[cbw->lun].block_size = tu_ntohl(resp->block_size);
+  p_msc->capacity[cbw->lun].block_size  = tu_ntohl(resp->block_size);
 
   // Mark enumeration is complete
   p_msc->mounted = true;