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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: dq.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)dq.fth 1.2 98/03/24 | |
43 | purpose: | |
44 | copyright: Copyright 1997 Sun Microsystems, Inc. All Rights Reserved | |
45 | ||
46 | : dump-copy ( transfer-d -- ) | |
47 | dup my-data @ swap caller-count @ give-chunk | |
48 | ; | |
49 | ||
50 | : transfer-bits>copy-out? ( transfer-d endp-bits -- copy-out? dummy ) | |
51 | swap transfer-control le-l@ | |
52 | d# 19 rshift 3 and \ dp bits | |
53 | 2 = \ in | |
54 | swap | |
55 | ; | |
56 | ||
57 | : copy-out? ( transfer-d -- copy-out? ) \ look at bits | |
58 | dup my-endpoint @ endpoint-control le-l@ | |
59 | d# 11 rshift 3 and \ d bits | |
60 | case 1 of drop false endof | |
61 | 2 of drop true endof | |
62 | transfer-bits>copy-out? | |
63 | endcase | |
64 | ; | |
65 | ||
66 | : copy-out ( transfer-d -- ) \ look at addresses/cnts | |
67 | dup my-data @ 0<> over caller-data @ 0<> and | |
68 | over caller-count @ 0<> and if | |
69 | dup my-data @ | |
70 | over caller-data @ | |
71 | rot caller-count @ | |
72 | move | |
73 | else drop | |
74 | then | |
75 | ; | |
76 | ||
77 | : copy-for-client ( transfer-d -- ) | |
78 | dup copy-out? if | |
79 | copy-out | |
80 | else drop | |
81 | then | |
82 | ; | |
83 | ||
84 | \ Dump the transfer-d. | |
85 | : dump-transfer ( transfer-d -- ) | |
86 | dup my-endpoint @ | |
87 | -1 swap transfer-count +! | |
88 | dup copy-for-client | |
89 | dup caller-count @ if dup dump-copy then | |
90 | /transfer give-chunk | |
91 | ; | |
92 | ||
93 | \ XXX need special to dump all the copy-buffers?? | |
94 | : dump-isoc-transfer ( transfer-d -- ) | |
95 | ; | |
96 | ||
97 | : ts-q> ( endpoint-addr -- ) | |
98 | dup td-tail@ | |
99 | over td-head@ dev>virt ( endpt-addr tail-dev t-addr ) | |
100 | begin | |
101 | 2dup next-transfer le-l@ <> | |
102 | while ( endpt-addr tail-dev t-addr ) | |
103 | dup next-transfer le-l@ dev>virt | |
104 | swap dump-transfer | |
105 | repeat drop ( endpoint-addr tail-dev ) | |
106 | over td-head! | |
107 | sync-endpoint | |
108 | ; | |
109 | ||
110 | \ Need to remove subsequent associated transfer d's when one has an error | |
111 | \ or when removing an endpoint. | |
112 | \ Assumes endpoint has been turned off. Dump them all, except a dummy. | |
113 | : clear-endpoint ( endpoint-addr -- ) | |
114 | dup td-tail@ over td-head@ = if \ already empty | |
115 | drop | |
116 | else ( endpt-addr ) | |
117 | ts-q> | |
118 | then | |
119 | ; | |
120 | ||
121 | : wipe-endpoint ( endpoint-addr -- ) | |
122 | dup skip-endp | |
123 | next-frame | |
124 | clear-endpoint | |
125 | ; | |
126 | ||
127 | \ Dump endpoint and dummy transfer | |
128 | : toss-endpoint ( addr -- ) | |
129 | dup td-head@ dev>virt /transfer give-chunk | |
130 | /endpoint give-chunk | |
131 | ; | |
132 | ||
133 | \ Assumes no transfer descriptors, except the dummy one at the end: | |
134 | : eq> ( addr -- ) \ Remove endpoint descriptor at addr from q | |
135 | ||
136 | dup next-endpoint@ \ Stuff pointer to next into previous one | |
137 | over prev-endpoint @ next-endpoint! | |
138 | dup prev-endpoint @ sync-endpoint | |
139 | ||
140 | \ stuff pointer to prev into next: | |
141 | dup next-endpoint@ ?dup if ( addr next-dev ) | |
142 | over prev-endpoint @ | |
143 | swap dev>virt prev-endpoint ! | |
144 | dup next-endpoint@ dev>virt sync-endpoint | |
145 | then ( addr ) | |
146 | ||
147 | toss-endpoint | |
148 | ; | |
149 | ||
150 | \ Don't dump the one at transfer-d, just the ones behind it. | |
151 | : dump-following-transfer-d's ( transfer-d endpoint -- ) | |
152 | 0 swap code-done-q ! \ this done-q can be reused now. | |
153 | next-transfer le-l@ ( dev-transfer ) | |
154 | begin | |
155 | ?dup | |
156 | while | |
157 | dev>virt dup next-transfer le-l@ | |
158 | swap dump-transfer | |
159 | repeat | |
160 | ; |