Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 08 Aug 1995 16:56:04 -0500
From:      "Eric L. Hernes" <erich@lodgenet.com>
To:        Karl Strickland <karl@bagpuss.demon.co.uk>
Cc:        "Eric L. Hernes" <erich@lodgenet.com>, terry@cs.weber.edu, doc@freebsd.org
Subject:   FreeBSD ddwg, work in progress
Message-ID:  <199508082156.QAA27238@jake.lodgenet.com>
In-Reply-To: Your message of "Sat, 05 Aug 1995 18:34:09 BST." <199508051734.SAA01503@bagpuss.demon.co.uk> 

next in thread | previous in thread | raw e-mail | index | archive | help
This is a multipart MIME message.

--===_0_Tue_Aug__8_16:55:40_CDT_1995
Content-Type: text/plain; charset=us-ascii


Here is my first cut at it.  This covers adding a device driver
to the kernel.  Both the standard and lkm interfaces are covered.


eric.

--===_0_Tue_Aug__8_16:55:40_CDT_1995
Content-Type: text/plain; charset=us-ascii
Content-Description: ddwg.sgml.gz
Content-Transfer-Encoding: x-uuencode

begin 644 /home/erich/ddwg.sgml.gz
M'XL(",7;)S`"`V1D=V<N<V=M;`"56VUSW#:2_HY?@76V(LE'S4CR^=VK.T?2
MYK2QK53L;)*ZNK(P)&8&$8=@"%*CV:W][_=T-T!R1G)RITHE$DD`C0?]\G0W
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M-ZZ=5KZ=:E>UMBIL01_-+(:V7>L;9TKM*]U5[FY[KH`!>F$KVYARHGBN80K"
M;WME`0';GIN5*YUI]-JU2]TN+<^MMK]>^<*6&4FR]LT-"3"(_1'GHAL[MXVM
M,`+??+`MG0(VLS*%U4N\P0YRTP5+"VSTTMQ:/D^-`S%!KY=T\@:?K3S^Y>?8
M[?5UW34NM$&9NFZ\R9=[>YDV%8$(Q'VUP("%8)W[KBP()%ZO79J6UG&0&QKC
M"Y:$)LY]T]B\G>#8IL.YO6E]3CH4\.I4?_*U+_UB(U+T&L4XJ#?UJ4J/EA#<
MZ,9@)8!G2VBJG;N*T(;%A4UH[4J79N.[%BB]]]":?5.6!YA8$<RC8Z,_&UL"
M"LLHX%'P70,T<7`KC#[?/6DU>H^A`3C2J&D7&C'M39BZ)R^>35TP&/]I:8.-
M,!%J9E9N@!=0N14%H\-8\T$Q4$F/=#I+'%T8+!`NZL8J6L,T\"?0%=$P$8]V
M:RH&D#:6\$K"`_,..&QTTU7J^[-+/M.+RX]OHX9")V==RSB$U@'6NC0YI(PX
MC7>F"D?GZ9L-CO2R5\KLGIWEIB+UL(X/:^8JTT"^)J(L`!'N054>FN?G<Y?#
MTO;V9''>71R5M@'0!'>,)M=]]9%!4ML@#>)>??.W+"JZ(\6I&]NV&[WPT$]>
MA$S)D06MH"JJ1PMB%3`#N)*N%11$Z(S1F/NR]&M:#1_E70@.MLG&2!(JD_1(
MI@-*;W6[J5T.+Q*A(35F7.7#W(LF^0J_'Y(F9SJ8#>$YR04HE5Q(&;Q80841
M>=EAI`S`QXU=3)9IP[FO6N.JH/)#;!O6C%,.@'1E\L8'5@#X6;;K#MI!6R93
M<BUV$P8E;,T-`&[)S9)X,+!:S[N&SY3F"'7IVJ"[FF<[[&<+>M[X55Q-Y8TU
M+2'6KOV6W&$07$2RM[>FF2SI@#U\H^ASL(H_UON>("CQ#%I'D(F4!W]HCE!5
ML8S1"6QO7R!Q/F_+O;%W#+7-'523CG:88"JZ+LZQLD/$R`EF-RNM[!_JV1R&
MVD3=V:BP3'ZSAL%!7HA@:P.79K>`B1*LR1C[S2G>7/QL"FRA\W;:^QH2-VH:
M3+TR*XBUXS](;-HB(WQ)WC8"@O.=6?ILC<B-"";K9\,N-.^"S!6R5"VK,T78
M9/41L1(G76RTO:,PDL$)$(3]GDF;*D(RAB6H.04DDH@#9S.G->[K)BGD7W'V
M]LZL:M)V$DL-8I'W"7EP.B](7M[3:-EMB2OZ6[X4LWI-;HG.@2,]J*"E:,L6
MUB+&N`7%NU57MJ[V34M[*O3^N5NXF<>OF3K;Y"6"(+8[F4P.])<6YOTZGUQN
M?VSQ;\41VH`<N`;'MQ7=!FP$YF$%8%!,4B!]YZH;.L/A5*NX[@T1KI)CJ;A=
MUA48HT3KP-ZV_(/A(C'4LT%<E8$*>A,%#BW.C:!ADQ<']YA<"+.=31SLV7-$
MCK"&%8)>+>#EH;&DG+;T-?8[V^B/7:7W+['%TN'Q@5@:F>W,0H7@SVJS,.2=
M9R:_(7B)&44@CD\_)F&V:*E*`+`?"S"LWSI$LR)11?"&9D03^<#21"FD"A2$
M']%&NW+_`!GFWT[UVZ)(X^(L)<Q@_!9*!8U`2(N??5V&WV:O9_G7#?T7`(1U
M^OR,?*98"7SYW"W8+Z2W\FC_!8`!::XY!+`#JR`Q>\CAT&7$"K8W[+A"S`F3
M]*ZQ,^_!T=Y,^RT)DB<L-GON>_N:C-",(#%G95TR,NH!\DVS?&.;&W"O31+1
MA=\Y`EJ+`L%-Y=?58#U,_?F=H\!0)9)X0%[U^OI^'"#(IAQ')O3WWAY4<@C-
M;/:E]S=!L:=\TR*7@*J=OJ'P?*I2*)G^ZC>37-_[\35%3DP4?_`9_U?D/2PB
MF9WR;&^F:7:E!I.:.UL2<>9=UR"YY,(3I1NR@JYDYHJ`>DO47XUW.F$WR3I#
MQ);Y]!:)RN`Q^#CI%(1"Q41#"=9`8<W.A1RY3C2*=^TG(BT4PU=%%)<\9!C4
M,64"E`DQ2^EQB72(<Y>8Z@C5ZG5R'D6/)H;CA^4SB9QUKFS9@Z0S)[^GVH%,
M@(K=))Y()E$%7P[DG2Q#MG=CA>HBCH5EDQP>>'97LW,GH8L^?<.D4)>@8ZB5
MB6*<B&N$"`JVW!3;1[AU?+SA^.W<$X-Z`$!!S[5[X9[E[).OA(R!W97ZE3+B
MA.U!@H;SO6$RKW-Q(N1SG`T]PC*U8F*[LF,2M,N@HG.9?G?QPX>+=U.$:LP-
M5JIBNLN$%%()YQE6-.*M_L`.9590_O72<[)$R3/H)-,>Y$E-0]4#D7AN$('U
M8+]RCKY"Z-E1G.OK-.^D=V/OV?MYD`/L4/;`[NN#7Y//07@'GK9P[8.NHY=[
MDE]?TR[9F29GKFC]D>.*";KD=I4U(ESKZXR72G015L?TB$8JB0JU1\AEWV9C
MG$A;@_TA,\MO!K[V2D7/]%6R@4=DI,M'>##7'_YV]8L^U4>J^(R(6GUN1WZ)
M'KS&B[P$Z/T;O.`']*8IULW6$'(&](*IVG@(/WBMOK(E2/I7PE?2&KUOK.[H
MS_%K7FEXS7^.W[/S&=[3G^/7PAC[U_PG9*@*-T\N5DEM**:?,C3(*8VQSHC[
M51W4;?Q4:):*[!N64>F+#U?G%W_'"^R+"#;.<)\.AG>N00!A>0?1OK>(_/4U
M'PN4G,RE:_W*M)&B2\K?"N$97"BMH4;Z3-X/&L,I3X@&5B23[X)D]D2-V!@H
M39-@!F<W*$D$C_7BN`=)Z&1"AYU6MYH!,+@MT>CHJ&$U_'=D@DK]DHR&(KVX
M(2PN!;=0^I;=MX"?,Z\1JL-$AT&'$YO=?U'8FHX13ME3#F)Y`B>N1N=+0^4C
MVQ?6?(-T>U9ZL@MQL/]'TTFP3!]K4DU$#-+`C(->QCD0_F"U0BK.E@OG:%LD
M<>T&.A-`7G+\M5J9FC[`(>K'4R5^-.X7FBF__/?_Z+^H?RI*#E32V7\F&\FV
MC2_;-KFLUW$?98H_T\=/C['@0#^2463Q<Q&Z'PX%CQN([R%9Z[&9;/JXQV=K
M0FP1N[']`-EJ^OGPX[MW_\ID3_\:3.ZJ*2277%,<*RR.:M5KULK\RK;V@'Y-
M]$^I2K->;DCWX1?9^DRY-IO`J74U.M>1M\V2F@U6K$:V+:4OO>U?I>Y+6<2,
MRW)K3_&X\E*C2`R&:&EPBXK2?U.U^`[^A6NNK>3%'\^NF!%(4A/+CW_'GA"W
M;IF?A4Q)&*#B7%1:*HSM2V7--YL#J<S2^S%`R;PA16F:!7%E0RX"A,AQS=>/
M2F]%9Q-97IM^':;XG*@,+N,]UWHK(6B@D%R?BB$R$OW1L:1)1_E'(OW"[X)#
M.KX9R#[[G5B%WYEKPIYQL$7^B/F+C.*`AN.<G:8Z^%BWC^B_1(V"^0_-1.W1
MY=7G;]^^OW@$[9-A+%0@;5G;".H`.3ML=L5'\,1>ZIJ8#<XU""56SA_RS-?7
M<6I\N!]_C?[G@5+:*$=7#]:>N/ZT/.`Z8"BINP/$8FD<Z$&U*`"(?KJ!HEU?
MNSL((#J^"XV[.]I&X^CNR=$1F`6>-;_IXR/XKA5T\>BN.,(/_@KN'_K)R?-G
M+_0M5V\Q!4RA>0`\5O\O(HB5=^$3<^)";(*0Q9E$*S,D%_<PDK''SZ6LT71U
M"XG[I^K)R0VYAP!GCQ6Q#5@)[;9>;@*G:E"WAEAYW)VLST0T!C+%#'J8?0DC
M+26AG`FRM/?]@[V]7OG'"4Q?[^@9(O=I2)='ED`AD2;.""RRZ9[YQK`=J;,>
M%<R3W104I!'SH_U0#EHM^D/^*BTC-+8_(_$D\G`WQ]CL2`=0SN0O$0O'H))`
MS"2B%TW"_C[O9XA5FHG6)3X=*]6402`CCN5<SI#XT5(>"7BQ$"PUYIA_#J'`
M&F8AHMN[3"-1=,)XX0>?M(,NK\Q4"=)>T(2M6S&[YJZ'8)/)W##C6^=A^2-J
MQ>%F1NDH=VB0*%><^_'2/%CQ3HP^K*1X2F_82N3UGBU8AB@9$:%O+SY<_'!Y
M%O>2I6T@+>($@@IN`49.M8];[])0\:5SNXX`PMP8(&JI&O*8M/Q0Z56TO5YU
M>&)A43(_%<Q[%9+>A1!.ZO?QU[%FQ&F8K<:9%.LII3L;8I.0:RNAXA;(*-:(
MO5R-`A/M5U+\4"-=EKHX>\Z;/CP,19TXBS0\?H<ML`4E;L%;X4H=D<[XO437
MY"T#SBVG@O=[5PUSTB1""`4M1/B,%LJQ4"#[^24>5J070%EHS`W$W(O]C:B)
M*R-H6Z$<0H(!$T4WJM!`D.G[M]]=((.8@*V:DK_CZL;X'6>%,8[#7PY@_Y#J
M<Z/82U]9$T!J3-/V[31"VXQ@8_:4IG4ABZ6^3,U-:/DW.-JN+>@4#L&E<O!0
M*3K6T!,B5VT^T3_B]#1]W=5\IE)_5L%*]JI__IFHE-T_B'$BUB+GW*RAP-)Q
M7V3>E5D:8-H6.KU_H%KOA[KM.V\*0UKRG2C@>RYW!;W_[KOW>^%@IX`-?\2=
MCB$(<W`NI/\$A(DTLS6!9-RLAO2<%&QHXT%`*#@A`$/.K9`2,Z<\P][5MG'4
M\.;>2&K7\V2IAC)N6U`!D1=LMZO'#[?V.>9:NPI4R5K9&)]8ITIK$,A2F9U.
MDD*%)4G$!:@1#N0J!I&V5H'YWQI7$J9<[HR]\QF&'<X\Q4H8D5MU*\X;^?Z"
MIAB`Z:8!>177%/552;R>G"8U.X,4M8BL0P*5.D8FI`,QLO%#4]*D4K),?4FJ
M^4.Z72ZMVGMUY$2!8\ESNUG0]ZF`&:>]1O%HO;TFE8B0.]'&<"Z,X\HMFMB,
M]&M:C(V:"]>7BOH*5)F86>@&%;FP);)ORP7$>*K0Q3XOQGF-]K]SWA(.E9'"
M_Y`HI\9OVAD#(R0E]/H5VFX^CQBHY$PX2,U]WG%42.K=#TF]2ID8@W]*:50(
MW8HJ:2-NU\N=%&;4<BR`P]#^V=F6VE;C."S5C0EN;L-3=3;IK):6-82<))GZ
M'F"=FZZ@OEAL<1-C#-SGZS.\V!JF[E"<1D%IJO80YQ(;2Q%2^G(5N4G/I=,*
M&)<A]L8_/Y,T.:(>C;F^3HR&KKR,NK3I(L1`[LDTXA2$,$$JOD1*WGH&*[AA
MAPIMVUH+"O6.TV&MC_4A_O5,:\57J[2NJ07_S<?AD^/G],G)Z!.IJDMM2?0D
M%IBP"!>8A'U4HWI,Y"(A7G<)K8KU:%*7486%PJ(?T_[^4*)+$?^:U''E5BZ7
M26<6(YQO)'02#R)V4B4?<,_Y94.A2Z7Z5TBG%#GC$%MC(,.K<27J7DZ:,#MA
MS)X\!V(`K(=JZ#`P%CS[K6F8`0X-!.&1CBOZ<;XG+VB^I\<RW[G-D8M':;=]
M[5;Q$!IL[Q`5*KH5EJ9Z>D)3/3^2J5(0'U/J+;:2VH0F4:9Q?5DX@+Q;6"Y7
M^M(>!E/2<%/7TC+VZ?(.E26V9S>MM'O`1=BO1,\A;(J7VBE&7%;ZOH?.5-M?
M/'CXZL50-Z<K)5>?+EXE#DSJ5E,EP"2:ML7XEDB4*6.#5Y1BDMPH&*KW&:,2
M+P30?FHJ<!&'D_<4K?3QY,53OG@1`^6SYTP3A1SL5A-#ID:RD7<R>K__Z"#*
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M-$]:?1#OWX](O&<OMIT%>_RNBDQ@"-:SOCS3YV]]J5N58-1#MZ`?+OW`=+ET
M^]I<*EKEJ3W@DX<FDC\5YA[QXEY_'[I;3A(X\8XL>^86"^*Q6`^V'F_\I38G
MH*WCS+NUG:BTHF-J5\?Z.WV#WW+5E[6<SD#%E/;6-5P0C@N16_+-BH/E@X)0
MF5AN:E%&.39`$8(K".&+:X=[=<$O=53%:+<@#HA;4NR=[]06TPD!5U.%<HBA
MN^+S%:VX9\4W^'Q$OTJED-&"#<P]]<G8>B1MK!9!5"25&?817?3C`U<<GKKB
M\XH6TW\9[IJ][NL-Q$BX5<WW(_M+-0]Y#DAI)(+2?=;>%)Z])%-X_O)W3&&L
M_./[(]0=JT3_,](V%J1P`9QN$Y3!^B&81:QR4XA!0L(WE>/2+]@*7Q[=7WH4
M[A_215_=*PRD&\B(FR01W6_<Q'J^>'LNE<J=O:_+EJX"?;UH7W_&]T,K@+T<
M?ZF&JK.>A6)"]')UD\4^2Z2_]Q24Z7>J7-%:2D*]I"%#0LS^=1`N&ZM#*EUA
M$\(X4S%+H,8SIE=?8,N7/;\T1$-$PDMIM(9NMG()3ZB4R-R:!A0'RS8VSA^5
M*&V39T6TEDNJO#B%80!CX;GI!C7>D_!\_`AHL7N2"HBQJ">[4/TJZ<I(RHWZ
MZF`J[\&)(T78?JV2OE'MH[(40$RSR?K)*B3JW)^-2LGE$;GX.Z?[?F'M?=U?
MYTM7SBY8V[YG<LD5D%0M^2'QVG.Z+?FQ]SFCCTY.^7^R&%S3]`LOY5KK_9?D
M-FDHW]IX>/4OR'=RVI>%=I[VM9_MQ]0/O?>0VZ([3_7//W//U2XV6V].K])E
MHR]"EBX$?A0>_$71L00U8.\OS'W8^X^Y^7K_<6JS/K0!T[0//?;U_:?<N]UZ
FC)V\#9LJ7R(-)H+X>QN19L?NTQKFWC^=]O]?S_\"J$7UGC4U``#U
`
end

--===_0_Tue_Aug__8_16:55:40_CDT_1995
Content-Type: text/plain; charset=us-ascii

--
erich@lodgenet.com
erich@rrnet.com

--===_0_Tue_Aug__8_16:55:40_CDT_1995--




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199508082156.QAA27238>