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\ Hypervisor Software File: packets.fth
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\ ========== Copyright Header End ============================================
id: @(#)packets.fth 1.4 01/06/27
purpose: 
copyright: Copyright 1997, 2000-2001 Sun Microsystems, Inc.  All Rights Reserved

\ packet offsets for usb device requests

struct
	1 field request-type
	1 field request
	2 field req-value
	2 field req-index
	2 field req-len
( request block size ) constant /request

\ first two bytes of request block -- type and request together:

h# 0001 constant clear-feature-req	\ twiddle bits for interface, endpoint
h# 8008 constant get-config-req
h# 8006 constant get-descript-req
h# 810a constant get-interface-req
h# 8000 constant get-status-req		\ twiddle bits for interface, endpoint
h# 0005 constant set-address-req
h# 0009 constant set-config-req
h# 0003 constant set-feature-req	\ twiddle bits for interface, endpoint
h# 010b constant set-interface-req


\ descriptor types, used by get-descript-req:

1 constant device-descript
2 constant config-descript
3 constant string-descript
4 constant interface-descript
5 constant endpoint-descript

\ Feature selectors:

0 constant endpoint-stall

d# 64 value 0max-packet		\ actual value set from inherited property; my
				\ endpoint 0; global ok.

\ device descriptor fields:

struct
	1 field d-descript-len
	1 field d-descript-type
	2 field d-descript-release
	1 field d-descript-class
	1 field d-descript-sub
	1 field d-descript-protocol
	1 field d-descript-maxpkt
	2 field d-descript-vendor
	2 field d-descript-product
	2 field d-descript-device
	1 field d-descript-imanufact
	1 field d-descript-iproduct
	1 field d-descript-iserial
	1 field d-descript-#configs
( device descriptor size ) constant /dev-descriptor

\ configuration descriptor fields:

struct
	1 field c-descript-len
	1 field c-descript-type
	2 field c-descript-total
	1 field c-descript-#interfaces
	1 field c-descript-config-id
	1 field c-descript-iconfig
	1 field c-descript-attributes
	1 field c-descript-max-power
( configuration descriptor size ) constant /config-descriptor

\ interface descriptor fields:

struct
	1 field i-descript-len
	1 field i-descript-type
	1 field i-descript-interface-id
	1 field i-descript-alt-id
	1 field i-descript-#endpoints
	1 field i-descript-class
	1 field i-descript-sub
	1 field i-descript-protocol
	1 field i-descript-itext
( interface descriptor size ) constant /interface-descriptor

\ endpoint descriptor fields:

struct
	1 field e-descript-len
	1 field e-descript-type
	1 field e-descript-endpoint-id
	1 field e-descript-attributes
	2 field e-descript-max-pkt
	1 field e-descript-interval
( endpoint descriptor size ) constant /endpoint-descriptor
openbios/openboot/obp/dev/usb-devices/interface/packets.fth

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obp/dev/usb-devices/interface/packets.fth
