Changeset ac18b08 in mainline

Timestamp:

2017-10-11T09:55:52Z (7 years ago)

Author:

Michal Staruch <salmelu@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

eaf5e86

Parents:

42bc933

Message:

Added superspeed endpoint companion descriptor

File:

• uspace/lib/usb/include/usb/descriptor.h (modified) (1 diff)

uspace/lib/usb/include/usb/descriptor.h

@@ -224 +224 @@
 } __attribute__ ((packed)) usb_standard_endpoint_descriptor_t;
 
+/** Superspeed USB endpoint companion descriptor.
+ * See USB 3 specification, section 9.6.7.
+ */
+typedef struct {
+        /** Size of this descriptor in bytes */
+        uint8_t length;
+        /** Descriptor type (USB_DESCTYPE_SSPEED_EP_COMPANION). */
+        uint8_t descriptor_type;
+        /** The maximum number of packets the endpoint can send
+         * or receive as part of a burst. Valid values are from 0 to 15.
+         * The endpoint can only burst max_burst + 1 packets at a time.
+         */
+        uint8_t max_burst;
+        /** Valid only for bulk and isochronous endpoints.
+         * For bulk endpoints, this field contains the amount of streams
+         * supported by the endpoint.
+         * For isochronous endpoints, this field contains either maximum
+         * number of packets supported within a service interval, or
+         * whether an isochronous endpoint companion descriptor follows.
+         */
+        uint8_t attributes;
+        /** The total number of bytes this endpoint will transfer
+         * every service interval (SI).
+         * This field is only valid for periodic endpoints.
+         */
+        uint16_t bytes_per_interval;
+} __attribute__ ((packed)) usb_superspeed_endpoint_companion_descriptor_t;
+
 /** Part of standard USB HID descriptor specifying one class descriptor.
  *