Changes in uspace/lib/usbdev/src/pipesinit.c [1a2227d:b7fd2a0] in mainline

File:

• uspace/lib/usbdev/src/pipesinit.c (modified) (14 diffs)

uspace/lib/usbdev/src/pipesinit.c

@@ -38 +38 @@
 #include <usb/dev/request.h>
 #include <usb/usb.h>
-#include <usb/debug.h>
 #include <usb/descriptor.h>
 
@@ -60 +59 @@
         NESTING(INTERFACE, HID),
         NESTING(HID, HID_REPORT),
-        NESTING(ENDPOINT, SSPEED_EP_COMPANION),
         LAST_NESTING
 };
@@ -72 +70 @@
 {
         return descriptor[1] == USB_DESCTYPE_ENDPOINT;
-}
-
-/** Tells whether given descriptor is of superspeed companion type.
- *
- * @param descriptor Descriptor in question.
- * @return Whether the given descriptor is superspeed companion descriptor.
- */
-static inline bool is_superspeed_companion_descriptor(const uint8_t *descriptor)
-{
-        return descriptor[1] == USB_DESCTYPE_SSPEED_EP_COMPANION;
 }
 
@@ -146 +134 @@
                 if (interface_number_fits
                     && interface_setting_fits
-                    && endpoint_descriptions_fits
-                    && !mapping->present) {
+                    && endpoint_descriptions_fits) {
                         return mapping;
                 }
@@ -154 +141 @@
                 mapping_count--;
         }
-
         return NULL;
 }
@@ -164 +150 @@
  * @param interface Interface descriptor under which belongs the @p endpoint.
  * @param endpoint Endpoint descriptor.
- * @param companion Superspeed companion descriptor.
  * @return Error code.
  */
-static int process_endpoint(
+static errno_t process_endpoint(
     usb_endpoint_mapping_t *mapping, size_t mapping_count,
     usb_standard_interface_descriptor_t *interface,
     usb_standard_endpoint_descriptor_t *endpoint_desc,
-    usb_superspeed_endpoint_companion_descriptor_t *companion_desc,
     usb_dev_session_t *bus_session)
 {
@@ -178 +162 @@
          * Get endpoint characteristics.
          */
+
+        /* Actual endpoint number is in bits 0..3 */
+        const usb_endpoint_t ep_no = endpoint_desc->endpoint_address & 0x0F;
+
         const usb_endpoint_description_t description = {
-                .transfer_type = USB_ED_GET_TRANSFER_TYPE(*endpoint_desc),
-                .direction = USB_ED_GET_DIR(*endpoint_desc),
+                /* Endpoint direction is set by bit 7 */
+                .direction = (endpoint_desc->endpoint_address & 128)
+                    ? USB_DIRECTION_IN : USB_DIRECTION_OUT,
+                /* Transfer type is in bits 0..2 and
+                 * the enum values corresponds 1:1 */
+                .transfer_type = endpoint_desc->attributes & 3,
 
                 /* Get interface characteristics. */
@@ -202 +194 @@
         }
 
-        int err = usb_pipe_initialize(&ep_mapping->pipe, bus_session);
-        if (err)
-                return err;
+        errno_t rc = usb_pipe_initialize(&ep_mapping->pipe,
+            ep_no, description.transfer_type,
+            ED_MPS_PACKET_SIZE_GET(
+                uint16_usb2host(endpoint_desc->max_packet_size)),
+            description.direction,
+            ED_MPS_TRANS_OPPORTUNITIES_GET(
+                uint16_usb2host(endpoint_desc->max_packet_size)), bus_session);
+        if (rc != EOK) {
+                return rc;
+        }
 
         ep_mapping->present = true;
         ep_mapping->descriptor = endpoint_desc;
-        ep_mapping->companion_descriptor = companion_desc;
         ep_mapping->interface = interface;
 
@@ -223 +221 @@
  * @return Error code.
  */
-static int process_interface(
+static errno_t process_interface(
     usb_endpoint_mapping_t *mapping, size_t mapping_count,
     const usb_dp_parser_t *parser, const usb_dp_parser_data_t *parser_data,
@@ -237 +235 @@
         do {
                 if (is_endpoint_descriptor(descriptor)) {
-                        /* Check if companion descriptor is present too, it should immediatelly follow. */
-                        const uint8_t *companion_desc = usb_dp_get_nested_descriptor(parser,
-                                parser_data, descriptor);
-                        if (companion_desc && !is_superspeed_companion_descriptor(companion_desc)) {
-                                /* Not what we wanted, don't pass it further. */
-                                companion_desc = NULL;
-                        }
-
                         (void) process_endpoint(mapping, mapping_count,
                             (usb_standard_interface_descriptor_t *)
@@ -250 +240 @@
                             (usb_standard_endpoint_descriptor_t *)
                                 descriptor,
-                            (usb_superspeed_endpoint_companion_descriptor_t *)
-                                companion_desc,
                             bus_session);
                 }
@@ -293 +281 @@
  * @return Error code.
  */
-int usb_pipe_initialize_from_configuration(
+errno_t usb_pipe_initialize_from_configuration(
     usb_endpoint_mapping_t *mapping, size_t mapping_count,
     const uint8_t *config_descriptor, size_t config_descriptor_size,
@@ -300 +288 @@
         if (config_descriptor == NULL)
                 return EBADMEM;
-
+        
         if (config_descriptor_size <
             sizeof(usb_standard_configuration_descriptor_t)) {
@@ -340 +328 @@
 }
 
+/** Probe default control pipe for max packet size.
+ *
+ * The function tries to get the correct value of max packet size several
+ * time before giving up.
+ *
+ * The session on the pipe shall not be started.
+ *
+ * @param pipe Default control pipe.
+ * @return Error code.
+ */
+errno_t usb_pipe_probe_default_control(usb_pipe_t *pipe)
+{
+        assert(pipe);
+        static_assert(DEV_DESCR_MAX_PACKET_SIZE_OFFSET < CTRL_PIPE_MIN_PACKET_SIZE);
+
+        if ((pipe->direction != USB_DIRECTION_BOTH) ||
+            (pipe->transfer_type != USB_TRANSFER_CONTROL) ||
+            (pipe->endpoint_no != 0)) {
+                return EINVAL;
+        }
+
+        uint8_t dev_descr_start[CTRL_PIPE_MIN_PACKET_SIZE];
+        size_t transferred_size;
+        errno_t rc;
+        for (size_t attempt_var = 0; attempt_var < 3; ++attempt_var) {
+                rc = usb_request_get_descriptor(pipe, USB_REQUEST_TYPE_STANDARD,
+                    USB_REQUEST_RECIPIENT_DEVICE, USB_DESCTYPE_DEVICE,
+                    0, 0, dev_descr_start, CTRL_PIPE_MIN_PACKET_SIZE,
+                    &transferred_size);
+                if (rc == EOK) {
+                        if (transferred_size != CTRL_PIPE_MIN_PACKET_SIZE) {
+                                rc = ELIMIT;
+                                continue;
+                        }
+                        break;
+                }
+        }
+        if (rc != EOK) {
+                return rc;
+        }
+
+        pipe->max_packet_size
+            = dev_descr_start[DEV_DESCR_MAX_PACKET_SIZE_OFFSET];
+
+        return EOK;
+}
+
 /**
  * @}