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1a08f436
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Date :
2010-08-25T09:23:17
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\ ========== Copyright Header Begin ==========================================
\
\ Hypervisor Software File: hub-control.fth
\
\ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
\
\ - Do no alter or remove copyright notices
\
\ - Redistribution and use of this software in source and binary forms, with
\ or without modification, are permitted provided that the following
\ conditions are met:
\
\ - Redistribution of source code must retain the above copyright notice,
\ this list of conditions and the following disclaimer.
\
\ - Redistribution in binary form must reproduce the above copyright notice,
\ this list of conditions and the following disclaimer in the
\ documentation and/or other materials provided with the distribution.
\
\ Neither the name of Sun Microsystems, Inc. or the names of contributors
\ may be used to endorse or promote products derived from this software
\ without specific prior written permission.
\
\ This software is provided "AS IS," without a warranty of any kind.
\ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
\ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
\ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
\ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
\ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
\ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
\ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
\ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
\ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
\ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
\ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
\
\ You acknowledge that this software is not designed, licensed or
\ intended for use in the design, construction, operation or maintenance of
\ any nuclear facility.
\
\ ========== Copyright Header End ============================================
id: @(#)hub-control.fth 1.11 03/06/10
purpose:
copyright: Copyright 1997-2001, 2003 Sun Microsystems, Inc. All Rights Reserved
copyright: Use is subject to license terms.
\ XXX Code presumes these are needed only at power-on, probe time, and that
\ they can do dma-alloc, free, etc.
-1 value #ports \ read from descriptor; global
-1 value power-on-time \ in ms -- NOT 2 ms chunks;
\ from descriptor; global
\ XXX power-switch indicator -- gang, individual port, or no power switch
\ XXX port power switch not affected by gang indicators. need setportfeature
\ if not ganged. from descriptor
\ XXX N.B. standard hub: the status change endpoint is interrupt in, poll
\ interval ff.
\ XXX need to fiddle c-port-enable?
: disable-port ( port# -- )
port-enable swap clear-port-feature ( hw-err? | stat 0 )
\ XXX error recovery instead of this:
?dup 2drop
;
\ XXX need to fiddle c-port-enable?
\ Illegal command. don't use this -- just reset the port. reset includes enable.
\ : enable-port ( port# -- )
\ port-enable swap set-port-feature
\ XXX error recovery instead of this:
\ ?dup 2drop
\ ;
\ Nominally 10 ms for non-root ports. usb1.1 7.1.7.3?
: 1reset-port ( port# -- ) \ Also enables port atomically
port-reset swap set-port-feature
\ XXX error recovery instead of this:
?dup 2drop
;
: port-reset-done? ( port# -- done? )
get-port-status ( addr hw-err? | addr stat 0 )
\ XXX error recovery instead of this:
?dup 2drop ( addr )
2 + le-w@ h# 10 and
;
: clear-port-reset ( port# -- )
c-port-reset swap clear-port-feature ( hw-err? | stat 0 )
\ XXX error recovery instead of this:
?dup 2drop
;
0 value reset-time \ XXX per instance?
\ XXX problem around 0
: reset-timed-out? ( -- timed-out? )
get-msecs reset-time u>
;
\ should take only 10 ms; book says it could take 50 ms or more
: wait-for-reset ( port -- )
get-msecs d# 100 + is reset-time
begin
1 ms
dup port-reset-done?
reset-timed-out? or
until
drop
;
\ do multiple times to get 50 ms reset. May not be needed.
: reset-port ( port# -- )
5 0 do
dup clear-port-reset
dup 1reset-port
dup wait-for-reset
loop
drop
d# 200 ms \ XXX balky device reset;
\ shouldn't have to wait this long
\ nominally 10 ms, usb1.1 7.1.7.3
;
\ If ganged, the port goes off when all ports have been unpowered
\ (AND function).
\ If already off, unpowering again should be ok.
: unpower-port ( port# -- )
port-power swap clear-port-feature ( hw-err? | stat 0 )
\ XXX error recovery instead of this:
?dup 2drop
;
\ in case the ports are gang-powered but individually controlled
: unpower-ports ( -- )
#ports 1+ 1 do
i unpower-port
loop
;
: port-connected? ( port# -- connected? )
get-port-status ( addr hw-err? | addr stat 0 )
\ XXX error recovery instead of this:
?dup 2drop ( addr )
le-l@ 1 and
;
: port-powered? ( port# -- power-on? )
get-port-status ( addr hw-err? | addr stat 0 )
\ XXX error recovery instead of this:
?dup 2drop ( addr )
le-l@ h# 100 and
;
\ Turn on any port to turn all on with ganged power (OR function).
\ Multiple turn-on commands should work. So the ganged power aspect is
\ really relevant for unpower-port.
\ Device could take 200 ms beyond the hub port power time before it is
\ ready to reset
0 value power-time \ can be global; used only at probe time.
: power-timed-out? ( -- timed-out? )
get-msecs power-time u>
;
: power-port ( port# -- )
port-power over set-port-feature
\ XXX error recovery instead of this:
?dup 2drop
get-msecs power-on-time + is power-time
begin
1 ms
dup port-powered?
power-timed-out? or
until
drop
d# 200 ms \ more delay for balky devices
;
: suspend-port ( port# -- )
port-suspend swap set-port-feature
\ XXX error recovery instead of this:
?dup 2drop
;
: resume-port ( port# -- )
port-suspend swap clear-port-feature
\ XXX error recovery instead of this:
?dup 2drop
;
: port-low-speed? ( port# -- low-speed? )
get-port-status ( addr hw-err? | addr stat 0 )
\ XXX error recovery instead of this:
?dup 2drop ( addr )
le-l@ h# 200 and if 1 else 0 then
;
: clear-connect-change ( port# -- )
c-port-connection swap clear-port-feature ( hw-err? | stat 0 )
\ XXX error recovery instead of this:
?dup 2drop
;
: clear-port-enable ( port# -- )
c-port-enable swap clear-port-feature ( hw-err? | stat 0 )
\ XXX error recovery instead of this:
?dup 2drop
;
: clear-port-suspend ( port# -- )
c-port-suspend swap clear-port-feature ( hw-err? | stat 0 )
\ XXX error recovery instead of this:
?dup 2drop
;