Linux 设备驱动程序第三版

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EÐࢨ12 პঠ, ႋ၏Ê`L, ˷Ú, ළ 1.2. ˷ @ቱූt, aֽӀ Dּ¥ ÍÎ Ȓ. , ½1ҵÊ9FGᆿTU$¬¾ ƱËu9 , Ȗּ ׷de , ¥¦ַ98E ᆿTjy< G)f8ȑ¸± ~;, u9ù;ˣ É4@˫ȩ¥ၠַ£༐, Õ9~;CͪFG£༐. , B࡚ ù; һL ÇfFG , ּ¥ַ , )f ¸±ֻ . @¾ù; Èy F ' ÄÅ 9˷ Ꮅ-ÂҔநͩ`. . D8EҘ¦ֻ, ҅z^cardctl ¢\, ҅9 PCMCIA ᎵT8< ؀Ȓ, ç@ W ΰ Ꮅ8ȑ/ܣ}½ѤT· tunelp ַ, ҅«À& .¥ּ؀ၠ. |wַT·౒Ρ¢\̤҈W ª , ᆿၠ၏Õa :Ê4ၠᎵ , ÔҔ, 9¥¦ַ8 $¬ , )ɑպj ቱූ <ÚÛª |}Ꮅu~;J¼ ¥¦3¥, E1ၣƱ9ÄÅÄ ¾ݖ. y* FGҔ·98E˩ ÕFG ¸˫/Ȓ"ڣø¥<`L, ࣣ@ᆿӀa"౒n L,`# ܣˑ²³ৢˣFGᎵ@8w´µؓ. |wT·¸±࡛<¹࡛/Ȓ, )4º ౒Ρ )ርڣ±ÅᎵ¾272Ï֧7 , ç@z^oந>¥¦һ`4/®, <ȖÃ༭° ÕȖ`8E¥¦ֻaպjּ¥ַSU¥ ύ«7ºҔநÎ FG, ¬¬8Em^ ¦§9U Ӎ ¥, ᎵַS@҈-.a̓8ȑ d½$ . Ȗ`UၠºҔந˷Ú³´EȻ© ҅` L, Eၠ . Ҕ·Ꮅၠ ၏ּ׷9UÊ4 ¦§ Ƒ֧7 . &8, 8E ΡEၠ`.ַ½$ȩ ༆ ˋÊᎵַS y ¢£/0ၠּ ¤8ȑ,ந¥Ꮅ)` L, PQ 98 ȖƱ) BȖᎵ: ҅98EÚUǎּ¥ַ<Ҕ·ၠ 2ᆿӀ. Ꮅ|Â +LdΡEȉ. @¾ؿȒÏ8wFG̓. &8, 8ER@ I/O Ꮅ ƱÊM @ÚÛ, )ɑርˑ p>ּ¥ַ. 8EᎵ , |} , ҵ9ਖ਼§ , 8í҅`LÚÛ, ࣣ@Hͪ. E,ڣ ¥ǎ8ȑȩ˫@ܖFG >¥¦ , B*¥¦@z ࢨ. Ꮅּ ׷ ̤ȩ¥ , ² +LaÚÛ , u9`Cͪ® Å˷ : ÅᎵ¾ , ַSּ ׷® ê|EæU z^ȩ¥K , һ` FG9!^ Ꮅ9 ޻ÚÛç9^¨8E t12 , )f¥¦9)ͪᇇ t12̤|E ᆿᎵ. 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Z |½S `4.9d 3 պB ַv M½ ڣ' 9:¶ iּ׷iE ּ ַ ̤ 86q`4.9dk ၠ è ƖpᇗˣefæZçÚ8 ַ,7ந҅°±2£å < q ~ቱ,78 ; ¶|} 9:ࡘ !9:ၠ7Í࡙ h3f ½ e Ð\ּ׷`4.9d3 0ˏ|?û qi gh;<^࡚gh!Ü ඪyÐ^ P, wּ E u* ַv జ Ð\½`4.9d Y´µÔ̵ ȖUV E ּ3 6.1.1. ioctl 3 ³]k4» ׷sFtቅ ַؿÄ ½8.:dd op҅lᎵ##opq] k҅4»Ƒx8.:ddޮ Ilm? ]kîn 0'Ðɢ҅## ZVj]kî౒,Yµ' 3iw ϤÐE࡙h /2.ޖÇ8d`9. efg 86Ȗ,¿̤ ÇÈ|`4.9dҔநFG V`4.9d;<¸ȑ˫ฬ9:Ã 9Rܼ Ȗ0°ûqikvwȩ 3 ÚѤӍ¦ ƑÔ̵V ҵ ½ ǮLph kÍநâãɢV҅ opƑ®࡚|ቱַk É¸ȑvȩ3 E Ȗࣣ0?û qi ®½Ҕ`4.9d kv!ȉ '3 <3 ҔÜȖðñ ȩí'ַkV ï|3 ҅ phַkࣣ0Z¹ t3 ၠූÖȒ Z¹ ׷ַּUVၠ ූ<íî Û < 0UV ႋqύѤ ¼2 ύѤÖȒ;<8`19ê޻90dd<6:07M ÖȒ̤Ρ Ҕந0.,3ø0 è¦Ꮅ8ȑyé20.,3ø0 <8`19ÖȒǎ8.:ddࣣ0Z¹ m >@9:;< Ztuၠ ූ07734 çɢZ Ȓ 70,/< d7 `90 Ƒ̤ ¶ ࡙ ɢZåæ 8' ሓ ^¸ȑef1âãܖ࡙Ð x8'Ȗந Vâãɢ 0a Ðɢôn $f_flags Ƒ "File IOctl Non-Blocking I/O"( " < ÖȒ "༐ƑTU). FIONBIO ENOTTY 9: . , ҅âã ၠ4», 4»è ׹Çy; ׷Ȓ âã3 FIOQSIZE ҈[ . ½ , ҅Íநn fcntl ҈ª, ࣣ0&!࡙ȩ FIOASYNC 3 Ȓª ¢£ O_SYNC ". ®½%3 ). ²&R̤ Linux 2.2.4 ¤P˷-࡙hȩ 4»ၠ ූè ÷ȉ $࡛n (8'PƑ "$࡛n "༐Ƒ i. FIOASYNC ½ܖ FIOCLEX mn 4»Ë½ , ÷ύÜñ÷٤ 3 ÎÉ close -no-exec "(File IOctl Not CLose on EXec). FIONCLEX §ַ. Ë "ȩ4»TU]Z˫^ , ׷1G ၠූ close -on-exec "(File IOctl Close on EXec). ၠූ FIOCLEX V¸ȑ4»FG ၠZ4»ô lð`4.9d 3 43d M "<`22:9,- d0" Ð;<&lVPQ?@®½҅Ҕந ,55 03/ èȒ½ඩƲx0 9* `4.9d O0ᄙR "#3ȒæVˬᄙ҅ᐈÐ % జ3 ၠᎵYè 8ȑ3ȒË .,997 3ûҩ»4»efҔநOK3 • 4»efóZ ቅ³ #4»7Íቅ³ • è84.Ô09ቅ³• ¸ȑ 4»7Í#ၠ |½ô3l Øࢨ;< ַּÒ ³ ®½`4.9d kÔu ̒௯3 ̤¸ȑ Vቅ ȖȖ`4.9d 3 ®࡚ 86Ȗ E í'kV Ȗ°±4»ÖȒZ1Ô̵Z@µ ׷̤Ȗၠ²&³3 3 һ౧`4.9d ef1 O#Ȓǎၠ˷-,~¹S 3 6.1.3. 3a`4.9d 3 'ǎּ s¶҅s í׷m ልâã V̤ 9:µ Z ֻ@í½ၠ ׷`4.9d ##࡙ ַv U %%È ּ׷Zâã ቅL Z 7Íé`4.9d3 86 ! $Ú0 a ϤÐhҔ ®½ 3 '3 ;,d`/ ,7ø:2039҅0 & ˷ -Ðâã Sၖ 0 Eּ׷ ǮL 0aÖȒ kࣣ 0~ቱ ׷ 3 k8 d`9. ef 1ǎ3 `4.9dҔந## 6.1.2. ɢ ˮP ந£å҅,:3 ?ûþሩÚ ûǎ ö ঠ´µȻý1Ð®½ȩቅ ቅ `4.9d 3ȉ1ɢ 7 vwÚѤ ȩ 4»¨d`3:Ô/»ඥ˷-Ƒ Ȗ ^ȩ³ȉࢍƑÒù ;<Ȗṳ́û9 86Ȗ¾$ǞȖ´µ Ftvñ86Ȗi ø ®࡚ Ȗ 86Ȗõö ርˑ̵ñӍ¦÷Dop ;phop ඪ1Ð\, Ʊ ᎰÜҵ`4.9d.2/ ϤÐɢ׷̵Z˷-ȩ ;<Ã3 l óÐSÉ %%Èx 709:73 #Ú# .2/ $&* *`1* * %%Èx 709:73 ×.2/ D $ &* *`1* *%È! %%È`3,557457`,90`4.9d-01470,..088*4Ô d743ø.2/8ô 709: 73 097,.9909M50,3/3:2-07 -`91`0d/8 ,3//43Ó9/0.4/0 x `39709 ;,d 92 5x `39077 `4.d9kƑȉࢍQR ϤÐ8d`9. Ô̵ô8.:ddঠµB ¥¦҅ȩɑṲ̑҅8ȑ҈ª Ð½Ȗ ç4KñTU˷జ ÇÈ|Ꮅ´µUV!࡙1 ,..088 *4Ô !˷-tu˷ Z¹ ,..088*4Ô håG0 é?=>˷ ?@ Ƒ ˷| QR ҈3Ȓx҅ ҅ i6Ꮔ˷0ᄙ V²& ˫ǎ ,..088 *4Ô 0* &% V1è 86҅ âã < Ꮅ ּ׷âã 0 ; < ࣣ9:ɢô ªͩ ႋÇÈ|˷-Ð,..088*4Ô âã ᄇ 8##È*#' ®½҅È*Ü#%#< V ȩ '86ȖUVÐ8`70 8`7041`39 tu Ú8 86`4.9dUV^ \ ༐* tu8` 70 ,//7 ϤÐì0 ïè҅ tu˷ VGËȒ Y ޖ ȻÈ*Ü#%# è 'È*##ϤÐּ׷ ' జ `39,..088*4Ô`399 M50.4389 ;4`/,//7:38`ø30/d43ø8`70x ô ¨,82:,..088ûÐ ,..088*4Ô Ҕந҅ ޖgh 6 ᏄÒ¬Ð0aÖȒ n "# vw)¿ ޖ `4.9d 1## FtyÐ ³ÐƱ`4.9d vwƑ tu ^>̤ޖ .45M*1742*:807 <.45M* 94*:80 7 Ð ҅IJ 5Ð జ 9:86҅ 3a ȩtu GË࡙ hQR;< âã ҅ ҅ Ꮅ4¸0 ˷ -4458ef 2ঙèIJ $,:࡙hË½ ࣣᏄၣ$% 2 $|tuؿÄ hå 0a ׷ ؿÄ yؽ³ $ 86҅ ÐҵPQô҅R޻ȩ 86҅\ÕϤÐ øü 8ȑȩ8.:dd Ꮅ`4.9d ´µÔ̵ UV ® ioctl Ϥ 6.1.4. ȩ ef1. 2 fcntl åæ½ å ,£..ڣãస. E½ ǮL -ENOTTY ࡙ h ioctl 3ttys, ҅@ í , #̓4 »<ၠ ' . ቅ, 0 ioctl Ҕந ၠ g7èñkl I/O ÖȒ »V ®½*+ύ® : ׷ Unix \Õ()ϤÐ. ҅åì< ioctl 2 ϤÐ<3 ҅Ʊ Ò §ef1 , fcntl, ҅ ႋ ioctl. EҔÜ, fcntl 1# Ǿ ioctl, Ƒ OK ¿ß¦ . "vw ȩ fcntl ef1, ȩ F_SETFL 3 "(༆). ²&#£å P̤ "ZූȉèÎÉ. ( Ã ϤÐȒ ¦ Y ef1జ 3 O_NONBLOCK ". V ࢨÖȒ ð ᎵؿÄGË\ÕQR hå,×GËZØ̕ڣ qּ׷s , ZUV[7,҅ => WZၠ ..ZVj XᎵ_ª ּ׷,×ၠූ҅Y Çy;< 0Wܖ Ú8uv ³klÖȒ sּ׷ZUVåၣV¸ȑၠ؀ ڣ 0³̤u=QRၠûၠ4»Üu=kl;<Ꮅ࡙#® 6.1.5. ˮ<Ȓ copy_from_user. Ƒ, ؿÄȩ copy_to_user è̕ ڣÚ8 "coversion to non-scalar type requested". ³ ,QRS٫ °Y_ éZÇyɢ, y6## ÍÐÒ ¬ P2ȩ 86i access_ok 6Ꮔ . . .ȩ ÖȒ Yª ͩ. ˹¨ , __get_user ּ׷ ɢOǎPå * local; âãɢ ÍÒ . ޖ íwv!Ò%Ð ႋ put_user < __put_user, ҅ . ޖÐ ^tu޻[Ρ³ҋ __get_user(local, ptr) get_user(local, ptr) .¦ܖ Ò¬Ô̵1 access_ok ¨ , 8'Üñ ioctlޖ¿ , ®࡚, జ¨Ð S L , è׷Ȗ MN read vw, 1 __put_user ༐S nK, ׷ȖҔந Ȓ½ ˷ ï.. acces s_ok QRþ . . ®࡚ , __put_user ּ׷ s,× ;86Z ! ˷ -EFAULT. __put_user GË)óQR(҅1 access_ok), G,×ˣ V ˷ . ҅ ªͩâã 0, ;<9: âã put_user QR hå ǎ 2, 4, < , 8 \༐. \༐, char $, Ò¬ 6 prt ҋh . y6 , 8 Ç yȻ p rt ϤÐó, ;): GËwÖȒ , ef ிl(Ð,Êgh4»<׹Ü CAP_DAC_OVERRIDE FGðñ ô Ѥ 8 ˬᄙ ³,Ê ၠᎵYè, §ef౧?v,¢£˷-ঠ µ¶ ³ ef ,ÊxǎᎵȒèè Ƒܼ̤JÈ,Ê ¨d`3:.,5,-`d`9M u҅Z^tu౧? ef1. ,5ø09 <. ,5809ˋ ˷-u=౧?Ü ޮ# ȩ,Ê ;<ᇗÍÖȒ,Ê ZZ=ÖȒ¶ؿࣺfGË"# 3˫ Zè ַZd= GË 7 svѤ Z=ÖȒ½2ܣ>; J 3?7 J01ǎ,Êefab f`½,Ê ) ͪਖ਼_e `3: ˷-$%ZN·>l #"0ܖ ڣᄇO,¸&i¸ȑE J3 J0 &/qZ =Z =ÖȒÒfÜ:3` efᄇO\>l .,80$ &* $"&%&ô $09ô,7 ø54`398949 0;,d:0 `1D. ,5,- d0 !*$È$* 709:73 !#x 709 ;,d ** ø09*:8078.:dd*6:,39:2`39**:80 7 ,7ø x -70,Ôx .,80$ &* %"&%&ô %0ddô,7ø`890;, d:0 `1D. ,5,- d0 !*$È$* 709:73 !#x 8.:dd*6 :,39:2 ,7øx -70,Ôx .,80$ &* ×"&%&ô ×09ô,7 ø`854`390794708:d9 709 ;,d **5:9*:8078.:dd*6:,39:2`39**:80 7 ,7øx -70,Ôx .,80$ &* ""&%&ô ":0 7Mô 709: 73`9`9 Ó8548`9`;0 709:738.:dd*6:,39:2x .,80$ &* Ú"&%&ô0Ú.,3ø0ô:80,7ø,854`3907 `1D. ,5,- d0 !*$È$* 709:73 !#x 925 8.:dd *6:,39:2x 709 ;,d ** ø09*:8078.:dd*6:,39:2`39**:80 7 ,7øx `1709 ;,d 709 ;,d **5:9 *:80 792 5`39 **:807 ,7 øx -70,Ôx .,80$ &* Û"&%&ô8Û`19ôd`Ô0%0ddv ":07M `1D. ,5,- d0 !*$È$* 709:73 !#x 925 8.:dd *6:,39:2x 8.:dd*6 :,39:2 ,7øx 709:73925x /01,:d9ô 70/:3/,39 ,8.2/ d,8.0. 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HZ ¡~: HZ #include 7.7.1. ౧ R Y¡ Tïð )*Ϥ, ;h ࡙ሓ 1¦:8°*8. °/:¦ 0/*é4 7¯ ü` [à$%0u)ÚȖ5ሓ ë=[àȩ]` ¿kȖ¾5 ;4§/ 1¦:8°*8.°0/:¦0/*é4 7¯Ó;4§/Ø3 <í˩±¿k$%5ç EuX ܖ8ÞȖ$%A 5ûǞȒ¿kȒˣ+Ȗ[ȩ] .,3.0¦*/0¦,=0/*é4 7¯ 8q Y VÕDÌQç78E` Ȓ ;(struct timer_list TIMER_INITIALIZER(_function, _expires, _data void init_timer(struct timer_list * timer ); #include HóJ¡qR¹ . ô, ³NQ?@³Nᆿ@Ƒ78Ƒ. ύѤqR¹E׷Ȗ5àpƑqR¹³Næ¹ ɢVE×]õ»QƑqR¹³N ύѤqR¹óÌ. ƑqR¹EQJ¡qRü`º int in_atomic(void); int in_interrupt(void); #include 7. 7.3. ˷ ȩJ¡JˣÏÐ: yÄ(³NÄ, 8Þȩ ssleep). void ssleep(unsigned int seconds); unsigned long msleep_interruptible(unsigned int millisecs); void msleep(unsigned int millisecs); ؿL5ᄇd֧¸:*(ÙÙES Ε). ÓÔ E¥ࢨɢ , E[à/0 . Ã Ϥ . ÷6 Ä< yÄخ ,aˣ QඟÄ void mdelay(unsigned long msecs); void udelay(unsigned long usecs); void ndelay(unsigned long nsecs); #include ùJˣ[Ƒ³N5[ƑÏÐÜO. ׷̵J¡Qᄇ;̤;RÓኞ . ]N7`ؿL] set_curret_state KȩH]p, Qc signed long schedule_timeout(signed long timeout); #include 5[ƑÏÐ. ȩ׷̵ J¡QB ؗ¿ kJˣ ÏÐ, t> jiffies *ᇰ ᄇ;ɢ . ȩ] schedule_timeout( RY) long wait_event_interruptible_timeout(wait_queue_head_t *q, condition, signed long timeout); #include 7.7.2. ü`׷̵;h , jiffy ೜p. struct timespec current_kerne l_time(void); Ä³N/3, һ౧Y֧¸ û÷ jiffies ೜p.خ E ̓ Ä, ]?@àû ÷3 ೜p . QÉÊË֧¸`خ >ü`׷̵;h, ȒÚ H Epoch KÄ void do_gettimeofday(struct timeval *tv); ü`H Epoch KÄ , ǎ 6 unsigned int Ϥ. unsigned long mktime(year, mon, day, h, m, s); #include dü` ;܏၏ . 8Þ CPU ࣣû÷;܏, ü` 0. ֧¸åú cycles_t get_cycles(void); JK <î࢓Ȓ¿k . ã cre ate_workqueue ] JK æ ȒN ඥ¡QƑ void destroy_workqueue(struct workqueue_struct *queue); struct workqueue_struct *create_singlethread_workqueue(const char *name); struct workqueue_struct *create_workqueue(const char *name); `Yr Ë*[ Ȓ¿k< Ȓˣ+. str uct work_struct; struct workqueue_struct; #include Ȓ 7.7.5. ½ Bؗ tasklet ìࡘ, 8Þ҅׷̵Q CPU qDÌ. ¾ਢ*Ƒk tasklet, 8Þ҅RpóÌ. 8ç tasklet_disable, `[àQ SMP Ƒ void tasklet_kill(struct tasklet_struct *t); ! tasklets R7`78 , #࡙Ù tasklet óÌ. p tasklet DÌ, ³NȒÚ "࡙Ù" tasklet ³N @W `! . ׷ᆿƑ Ró Ì, @W ` void tasklet_hi_schedule(struct tasklet_struct *t); void tasklet_schedule(struct tasklet_struct *t); ࡛Ꮦ. tasklet_disable Bؗ tasklet ìࡘ 8Þ҅Q CPU qDÌ . ` Cç࡛Ò5 }]`óô (ࡘ <ȩà tasklet. Ã (ࡘ ؿLቱ ãȩà ( Ȗ[ (ࡘ ` tasklet γɑ҅ R (ࡘ ). void tasklet_enable(struct tasklet_struct *t); void tasklet_disable_nosync(struct tasklet_struct *t); void tasklet_disable(struct tasklet_struct *t); tasklet r . జ 2 DECLARE ҋù` tasklet Ú(ࡘ. d ÷6 ̵ 2 ҋ:² ST tasklet r , # tasklet _init '( M cdËቱ³ö void tasklet_init(struct tasklet_struct *t, void (*func)(unsigned long), unsigned long data); DECLARE_TASKLET_DISABLED(name, func, data); DECLARE_TASKLET(name, func, data); #include 7.7 .4. Tasklets ၣ`:;׷̵ ࣣæQ CPU qDÌ.¾ਢ:;*Ƒk<:; . N void del_timer_sync(struct timer_list * timer); void del_timer(struct timer_list * timer); ɢKTE×`:;rR¦ ˸DÌ.ҋ:², ü` º int timer_pending(struct timer_list * timer); áâ Rp:;r ᄇ;;h. ҅ƱàȒÚ add_timer ûõ. int mod_timer(struct timer_list *timer, unsigned long expires); ¦˸:;rKQ׷̵ CPU qDÌ. void add_timer(struct timer_list * timer); . r 2ޖ O:;rSTE'( M timer_list>` Ã78q¿k; ¤, create_singlethread_workqueue JK æΡȒN J¡Ȓ¿k. DECLARE_WORK(name, void (*function)(void *), void *data); INIT_WORK(struct work_struct *work, void (*function)(void *), void *data); PREPARE_WORK(struct wo rk_struct *work, void (*function)(void *), void *data); ST<'(MȒ¿kˣ+ҋ. int queue_work(struct workqueue_struct *queue, struct work_struct *work); int queue_delayed_work(struct workqueue_struct *queue, struct work_struct *work, unsigned long delay); ¾Ȓ¿kã ȒJÌޮ¿óÌ . int cancel_delayed_work(struct work_struct *work); void flush_workqueue(struct workqueue_struct *queue); ȩ] cancel_delayed_work K¾Ȓ¿kƑ k<ˣ +; flush_workqueue cࣣæȒ¿kˣ+Q ƑOȑ DÌ. int schedule_work(struct work_struct *work); int schedule_delayed_work(struct work_struct *work, unsigned long delay); void flush_scheduled_work(void); ȩ]˩±¿k. 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K¡7ቱූ|ቱූÁ >êS ýoÅÁR̤ඥGàqၠ±,ܖ !˷9ȉූ,ቅ!!=ඥO!!=ඥOၠ±˩ ßγ ׷Ȗ9:q,ܖ"!Á ̵ #$ ּ,!Á¿˷9ȉූ= & <ቱූҮ9þ !!>ၠ ß ȉà ׷yE,ß ȉàඥ ß5 ȉàၠ±ß ȉà<ͩ ¿ ¿ , 4 + ! .ѤþȒ Õ ' ٫ঠ ȒE҅ q!ၠ± dYRÊַޮd DE 85.( ȩS 574.ܖ ¿ ¿ ¿ ).508.);0/ ¿ ¿ + ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ 1 ¿ ¿ ¿ ).508.);0/ 1 ¿ ¿ . ¿ ¿ ¿ ).508.);0/ . ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ ¿ ¿ ¿ ).508.);0/ ¿ ¿ 08.);0/).58:-8;8 08.);0/).58:-8;8 9700 ~ , 5 5 5 , 5 5 89,90 + 07 54 (76 /0;(.0 /09,.*89,90 .431( .,88 ¿ ¿ 8;8-:85.(/0;(.08 ¿ ¿ ~ 9700 8;8-:85.(/0;(.08 ¿!!=ၠ±¾ ׹ðñ12 Ρ! !=ၠ±¾ ׹°, 8;8-:85.(/0;(.08 Ƒܼ̤ , 8;818 ¾׹QƑ !!óô!!ၠ±Eݗã!!ၠ± !!ቱූ Ү9þ `4ǌ nob٫ ±àၠ ! 1qß̵`4574.-:85.(/0;(.08 < 574.-:85.(òò eSy°!= ၠ± dY <ၠ±ቱූ Ү9þÑÒ Ä8Uðၖ Ꮅ° ëì T!íîቱ 34҅ ¢>6T eïþÁ ,Ꮅ9:ၠ±Å Ù҅˷9< = ¤èéU¿À̤üý!Åȉූ ê! !҅ ¤ቱ ÙቱූǞ ÁEßÛ` '(3:+ ˷A 8éቱූ+Teàၠ ,·ÐÅ þƑҮ9þ \ၠ±ቱූ Á9: ÑÒÄ<69:ቱූ Á ÍE»Ì ÑõᎵ D࡚s¢T!cdּ׷ÉÊ!=޻&¸¹\Ó=$56Ë¾4ቱූ Á ࡛ýo Ù࡙õ= 9:ؿ޻USE°Ү9þƑ٫T >@ À!!ၠ± UýoE :҅ቱූҮ9þ#҅ၠ± ÑÒ ܼቅ!ၠ±ö= ͩ= D࡚Ꮅ°¸ !ቱූÁ !u༐ñq ÁànoቱූҮ9þޮ|4¸¹Ì +57088 ၠ± ҅!!ͩqÆ ቱූ!= !=ቱූ ÁE!!ၠ±ðñ u༐ßs Ү9þb Ꮅ° Å9:҅ ቱූ ,Ä:¤׷̵U¿À ̤ °¢ቱූÁÄ]D࡚ '(3:+ Ꮅ°9:҅ၠ±=S޸¨ >@T ¿À!!¤̤ Eርˑ̒௯ Ì!=ቅ4,·ÐÅÑÒቱූǞÁ ٫4!!"޻& ˷9<= ¤°Uø¾¿À½3!Ꮅ ¹º»ּ׷ ¼Ү9þ 34T!±²s¸!° ¶·ቱූ!ၠ±̤ e ȩX°9: ȑᆿ 34 ³ၠ\!!ၠ±4 ȉ ,NæG֧ÈO°S ȉ 9: ȉÛ` = &à=˷9 Á°ȩS ȉඥß ±² !!=ඥ= ÁȩS 8 +5°Ê °q12 !=޻&ß!!q !Ƒ ©ªà !üýþqq¯=#" ඥC .DE != 6ࢨƑ©ඥ4° ˩γɑඥÀ>Ҕந=! õõ !!ၠ± i|ܾ¯cdUVWҮ9þ qቱූᄇ]ܖ cd ሓ !=u༐ַ4ü BC ,జ Ƒ,82-;9047/07 5L ַ̤!=ַÛ`ÀȖ°ࢨ,¢ޖCސ8éȖ>6ᆼၘȋ ༐ ¢ 9:ቱූÁ¢à34T! ؿ T!u༐ַßcz '(3:+ }i `èéüý ֧ÈO HȒ Ꮅ( <`ּ׷ üؽ üýu༐ַ׷9:2u༐ቱූ Ү9þÅ ,! OȩS» Ì°,஧9 ɤþ!һ౧¸¹Uၠ၏Eóôǎȏ· != ၠ၏`qÅi ]û4 ü£!=Ү9þ uࢍ4û°S D࡚U6ࢨuࢍ/@ͩðࢍ˷{Ø] ҅.4q ú °´uࢍUȩS s¸U6ࢨuU6ࢨҮ9þƑ =°´ Ү9þ˷ {Ȼè>ၠҔͩ !!!=ၠ±ؿ ðñq ɢ,4°´!= ቱූ Ү9þ46ࢨ Zܖ8V ޮ| ၠ±óôቱූ Á V ¸¹!=ቱූҮ9þ nZ̵u༐4¸¹=Ôz4 Ȼè ၠ± u༐ Á !q!=ၠ± RqäJܖ༐-.!=ၠ±ðñቱූ Ү9þ < 12.1.3. ቱූҮ 7084:7.0 nZ T!ၠ±ቱ׷̵˷9 პঠ ±׷̵=#"no (76 nZቱêT! !=ၠ à ٫ !q !=ၠ±RTܖØ4T!!= ၠ±ö ɢß ;073/478:-8;902*/0;(.0 8:-8;8902*;073/07 < .,88 Reà 574.-:85.(òò ၠ±ƑÄ]ßҵႋ" ¢!=ቱූ٫҅ˋ1ύ ǌ!4 )431. 03/47; + 03/47;*8902;-8:8 0.);0/*8902;-8:8 7084:7.0 * '$$ß/0;(.0*.,88/0;(.0*.,88*2,8:à' =!=* 2*=Ѥּ<Ѥၠ±+1E!=* T! ҋၠූT!! 897:.9 5.(*/0;(.0*(/҅|3ቱöּ <ၠ± = T!Ëð ß;03/47 /0;(.0à' =!=* ! 897:.9 5.(*/0;(.0*(/ ¿ Ìq!պҋּ׷US E Ꮅ°S E¤ ၠ±8é҅¹Te=! ٫ !ၠ±34SEWqT!ɢSE3ቱ :0730*:43*9 /7(;07*/,9, uࢍ2*= ּ׷S ȒT!Ꮅ°üý ȑѤ·Ð= ɢ!=*8é .Ѥà,!=Ucd !þ4 ! ' != ၠ±lßl!= lၠ±T!ɢˋ 1ᎵEØ҅VW **:.,88*2,8: **:.,88 +1O2*= ּ׷S ȒTɢ!=* 8éᎵ°üý ȑlmѤ·Ð=! ၠ±!= Ѥ·Ðּ<Ѥ·Ðၠ± =ØT **:8:-/0;(.0 **:8:-;03/47 + 1O2*= ּ׷SȒT!=* 8éᎵ°üý ȑּ Û`ၠ±=ɢ!ၠ±!= ּ<ၠ± =ØT **:/0;(.0 **:;03/47 T!ðñ+1¿!ᎵVWlm!= ၠ± dYUS E 897:.9 5.(*/0;(.0*(/ ˷A҅VWǮ0lmၠ± !!=Ꮅ° ã¸ ##ȩST Ѥ·Ð¸.SȒ࡚ ¾ *!҈}noᎵؿ¸#] ҅, -ÀÑßҔၠ± !ÑS޻& ༫,҅õõUS,8é༫, \ǎඥ4!ၠ±࡛¸# uࢍ °S ET 8:-8;8902 /0;(.0= 8:-8;8902 ;03/47= Zܖ Ꮅ°ȻèlҮ9þ¸ #҅.>ၠҵႋ bIT !౐%34 RӐǎ elᎵ°VW*!l Ǿၠ± !!Rq ¢.422:3(.,9(43¢෺ 47: ¢෺=¢807(, ¢<¢5,7,0¢Ӑǎ ¢0907309¢<¢94:03 7(3 ¢4!lRӐǎ ¢309 .8ȉɢ҅ 5 ȉ¸ #¢(l¢ß Û`෺à !lҮ9þ4 !l!!>ၠ RӐǎ .,88 ±6oܼɢ '˸ Ƒܼ̤\ǎ¾¸ၠ !ၠ±ᎵõõȻ&౐%E¸#҅ၠ±Ȗ°,ּ<ၠ± = \ -.ȩSÖ×¢౐% ¢EØ»ၠ± !ȉ¸##ê !< ּ = +\]நEඪ+ T! = õõȉҮ9þ "ּ ´µ\ǎT!ၠ±= ࣣq6 ࢨ"}˸ !T4 /0;(.0= « ቱê҅.!ݖnoּؿ ! qܖ ȏ ! ˸"!= ö÷Te«q 5 +5 .8!!=390 ၠ±R¸qּ« !ȉҮ9þ¸ # T! ;03/47= Ү9þ༐¿-. T ࡛¤lǾၠ± 8:-8;8902 ;07/47= < 8:-8;8902 /0;(.0 = qÅUּၠූ E >uࢍ |ÄҮ9þnoᎵ°ȩS҅. E ܼၠ±ቱ࡙ɢêT !!= ! !ၠ±¿;07/47=/0;(.0= < .,88 4!õõS̤!Û` !!=Ү9þ¸ # ሓ҅ၠ±Ê0҅8ȑ9:ၠ±ቱූÁ !Ꮅ8ȑᄙ4ˬ.- ¿+1 ሓ !!=Ꮅ>6T4T!ðñ12BC ¦ <ìD Ecd !=Ꮅ ê!= Aؽ T! q!= Ꮅ ؿËð 54 897:.9 5.(*/7(;07ܖ U࡙˸̤˷A E 12.1.5. ˸ PCI Ꮅ Eܼ̤ ࡙ᎵEͪᇇ 5.(2,5B·Ðq ¾!=ၠ±èܼ̤AKB·ÐȩS 24:/08 AK ׷˷A ã ƑqU˷AƑ£¤VW!=ၠ±U d] 1q҅.£¤ %Ѥ,ቅ!ܖ , /0524/ ҈+b5.(2,524/:08 #$='*' # (-24/:08Æ G]£¤noÍ̤ͪ ޖ҅FC 8éܼ̤T! #«q£¤Ƒ oܼ **24/*5.(*/0;(.0*9,-0ܖ,ַ( /Eb,˷AðôÒ)Ƒ /0524 ! ҾìD@E **24/*5.(*/0;(.0*9,-0҅Øþ 897:.9 5.(*/0;(.0*(/ dY T!×ÞËð *(/8à ß5.( (5*%''= * &' .8¿ ҈+T!*%''=* &'ҋ ၠ± Ǯ0 ሓǮ0 £¤ȩS T! 5.(*/0;(.0*(/ >6Uᇗ]̤Sy ÁEˋ1AKB<£¤ͪ ᇇ·Ð 12.1.4. MODULEDEVICETABLE ҋ @!ၠ± T!= CඪS, 897:.9 5.(*/7(;07ß zIၚd àno҅qSEã?Sy ÁT!öᎵVW !4UၠූE >! 897:.9 5.(*/0;(.0*(/ dY dY Ƒb .ѤËðT < < 9 '*55*=à<%* =*=' ='!= *% #*=*=ß!=*''=9!=* '*55*à<%* =*=' ='!= *% #*=*=ß!=*''=9!=* *=à< '*55%* =*=' ='!= *% #*=*=ß!=*''=9!=* *=à< '*55%* =*=' ='!= *% #*=*=ß!=*''=9!=* *=à< '*55%* =*=' ='!= *% #*=*=ß!=*''=9!=* *(/86( 9 89,9(. 897:.9 5.(*/0;(.0*(/ (5 .¿ (5 /7(;078(.-:8808(. < 9 ò 03/¿ ,Þ07408 ò < < /7(;07*/,9, ß:38(30/ 43 à;0.(*/7(;07 à à= + 5à #='*& $*'$$ßßß!= *'$$*$'=!=* Ý=.4397407 ò ò ,3/0 ,3; &$ 89,9(. .4389 897:.9 5.(*/0;(.0*(/ 5.(*(/86( 9 9 .¿./ /7(;078:8-4890.( Ƒ°ܼ̤ ¿!ᎵVWၠ±lm.Ѥ,zI˷A ҋE!ȩST !ö!= l! 897:.9 5.(*/0;(.0*(/҅3ቱ T!Ëð ! ¾ၠ±,UȩS=˷A\҅q8é *(/ E҈+ 30q!=Ꮅ¾ ׹ܖƑ T4ÑÒUËð , 8;818 !Ꮅ ,҅UͪᇇÀb˷A ˋ1¾!== URቱ ê • !ၠ±ÅÁ Ì8éᎵ°,ၠ± ]ந̵Uͪᇇ4qպ°ÊXJSE !!=ၠ±°, ȑÅÁ8]நÛ½ • ,VW!= AKB·ÐO Û` ,7/:8 ·Ð E¿=̕ڣ!ëìno4DEzd i|À ̵˷AT4¦! ¶·Ì8éࣣqၠ±UṲᎵOṲᎵOၠ±«Û` ҅ KqR+ͩ˸ܖ׷ ! M¶·Ì6045.(*70(8907*/7(;07 BC60K < 709:73 5.(*70(8907*/7(;07ß;5.(*/7(;07à 9 89,9(. (39 **(3(9 5.(*8:0*(3(9ß;4(/à Ì» ÌƑ҈+ ¿ ÂÐOT, !=Ꮅ£¤ 5.(*70(8907*/7(;07 !1qØþ 897:.9 5.(*/7(;07 ØH¦SE˸ 897:.9 5.(*/7(;07 ̤!=Aؽ S < 7024;0 7024;0 574-0 574-0 (/*9,-0 (/8 3,20 ¢5.(*8:0¢ 89,9(. 897:.9 5.(*/7(;07 5.(*/7(;07 9 Ì: ! ࡙ struct pci_driver , |q 4 !uࢍ> 6U À, EËð !Ꮅ ؿ҅ . ; ûU ¦S, ¦SOP Àb . T!BCÅ°´׷ pci_dev U٤T Å PCI Aؽ¦ SBC ØH. ҅ int (*resume) (struct pci_dev *dev); !Ꮅ ؿ҅. °´; ׷ struct pci_dev UOPÅ PCI Aؽ¦SBCØH. OPQR, state ìDÂJ. T!BC4 int (*suspend) (struct pci_dev *dev, u32 state); NᇇÅ. ˫ǎT!BCM2༐,bI . Øþ PCI Aؽ, struct pci_dev U¢·ÐƑÏsÅ¦SBCØH, Û`׷ PCI ᎵU¢˷AƑ void (*remove) (struct pci_dev *dev); ༐,bI. !M¶·ɢ. ˫ǎT!BCM2! ¶· , ּ҅׷ KéT!Ꮅ ¹LqT!ၠ± , Û` ±² ÌT!ၠ±noK 0. 8BC. 8éT! PCI Ꮅ>6T!ÂJê҅ struct pci_dev, ּ҅׷࡙ !Øþ struct pci_device_id ØH, PCI AؽSEï T! ̓ , ƱUÂ JêT! struct pci_dev Å. !҅ၒET!Ꮅ ¹Øþ PCI ᎵƑ probe BCØH. T!BCU PCI Aؽ¦ S, ׷҅q int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); Øþ struct pci_device_id YØH, ,bIcd҅. const struct pci_device_id *id_table; Ѥ. ҅nZ, sysfs Ƒ, /sys/bus/pci/drivers/ z, ׷Ꮅ,˷AÅ . q PCI ᎵI. ÑõUၠූE<Ꮅ£¤ %Ѥ%ܖ, ,˷AƑᎵ%Ѥ. ҅ؿ 4 const char *name; . .ΰ̤·Ð nܣ! kãU T!BC ¢Ƒ©Oz¦S. 8é4, e, 34҅ ˋ1׷ oܼၠ±Å ØѤ·Ðּ <Ѥ·Ðၠ± ID. T!BC ҵႋ pci_get_device ss_device, struct pci_dev *from); struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ΰ̤·Ð n.ܣ! kãU 8éTeïT!BC ¢Ƒ©Oz ƑU¦S < 5.(*/0;*5:9 ß/0; à ò &80 90!= /0;(.0 ò 9 (1ß/0; à &'' à * '= !=* #*/0; 5.(*09*/0;(.0ß!= *' 897:.9 5.(*/0; ò/0; !8ȑ ࡙ȩST!BC.Ѥ4: ࡛)ၠ± , K NULL.±, from UØE NULL. 8éࣣqܼ̤( !ၠ . Eܼ̤జ!ၠ± , Êɑ]^ hi , =ؿ¢dY }T!ϤCּ సØþ èUܼ̤b ! ౐% EX̤2!ၠ± ;E࡙ JX ȩS၏C , Êˋ1˷A Éýၠ±8 é҅UÏs .ϤC from S , no Ú˷A oops. ,ᎵS҈"T!BCK struct pci_dev, ҅ؿ¦ SBC pci_dev_put ½ T!ࣣq ȑÑ , struct pci_dev ìD found Ƒ¬S၏C, noK҅ê¦S`. T_ࡘ T!BCec׷̵·ÐƑ PCI ၠ±dY, no8 éᇗˣϤC3ቱØּ<ၠ± ID, ҅JH struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev *from); !ö !=ၠ±Íd࡙U>6 zdBC°S ¿8éiந !ၠ±ÅUÏsÅ±dY׷ _ࡘ Ꮅ a ˷A 8é҅. ab cë!=ၠ ˷AƑÏs EÐƑ!=ၠ±dYÍèU¢ Ꮅ ओ\ · !ö !=ၠ±BC ! ]^ओ\·ÐƑ !=ၠ±dY 60҅. F¦S ҅.6 0' HûU !=ᎵȩS,˷AZƑ BC 5.(*70(8907*/7(;07 4 12.1.6. PCI ޸ < 5.(*:370(8907*/7(;07ß;5.(*/7(;07 à 9 89,9(. ;4(/ **0+(9 5.(*8:0*0+(9ß;4(/à BC, 5.(*:370(8907*/7(;07 BCKÀ̵U¦S ׷i² T! ¦S ȑ׷̵ṲT!Ꮅ != ၠ± RUÏs noT!!= Ꮅ 7024;0҈+ TÑÒ¦S 5.(*:370(8907*/7(;07׷!= ᎵUNᇇ 897:.9 5.(*/7(;0 >6¢˷AƑY !ၠ±,·ÐƑ]நT!޻&F HȒ!ᎵU ˋ1ͪᇇṳ̂8é no޻ᎵṲ ¾ၠ± *(/ !Sy°6E»º struct pci_dev *. ҵႋ pci_read_function int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val); int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val); int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int wher e, u8 *val); T!Ꮅ, ȑö÷Å x0Å9: struct pci_dev : , 8éBC»ºOITqÀ̵BCUҔநEd࡙¦SzdBC˷ฬBC. °¦"ȩSTܖ .̵ T! ɢ̤ü , ,<̤>ၠÀސɢUÂJ. word < dword BCᆼ eU<noႋÑõ ,#¸ܖ e, ၠ±" dev< 1 !, 2 !Û` 4 !u༐̤ቱූÁ. ႋÑõ int pci_write_config_dword(struct pci_dev *dev, int where, u32 val); int pci_write_config_word(struct pci_dev *dev, int where, u16 val); int pci_write_config_byte(struct pci_dev *dev, int where, u8 val); vv Äɢ¢ü ̤üýþu༐ַ, D࡚Ȗ ؿüý u༐ַ.ސBCᆼ !¶·Ì. word < dwordu༐ɯu . ¢ቱූ Á:XɢÑÒ val ØHK , noT!BC Kɢ4 ၠ±ቱූÁÄ 1 !, 2 !Û` 4 !u༐. where ϤC4¢ቱූÁ} [#¸ܖ ¢" dev int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val); int pci_read_config_word(struct pci_dev *dev, int where, u16 *val); int pci_read_config_byte(struct pci_dev *dev, int wh ere, u8 *val); ¿(3:+5.( ˫BC ύmǎÂᇗE9:ޖȉC ȉÛ` ȉ \ǎᎵ ቱූÁ°ÑÒ 5 !¸¹޻&E9:ቱූ Á DE '(3:+ þƑҮ9þ 34sҔந4 Ȼè ǎּno6ÄÛ< !Á¿˷9 &<ቱූ ቱූ 12.1.8. ). , CardBus ၠ±O(҅,ᎵӀ7Oèé҈< PCI ¥ zƱቱ҅Ƒ©ඥ< I/O ¤. .8, Ti²̕ڣT!BCҔOȩၠ± . ҅oኞၠ±Ê0, q int pci_enable_device(struct pci_dev *dev); ؿ¦S 5.(*03,-0*/0;(.0 BC¿ ,!= Ꮅ޸¨BCƑ ,Ꮅ°9:!= ၠ± ȑၠ±პঠß= ¤Û`Ƒ©àÀ̵Ꮅ 12.1.7. ȩ PCI ၠ ΰ ̤·Ðn.Ƒ.ܣ! kãU qØþ BC R¢Ƒ©Oz¦S. 8é4,ܖ .: struct pci_dev, ҅ؿ¦ S pci_dev_put ! ØH. ׷¦S`҈+9! 3ቱၠ± , ҅ ¬S၏CUJH no KØþ ҅<ͩ« . 8éܼ̤ !Ø PCI ၠ±ၠ± T!BCܼ·ÐƑ P CI ၠ± dY , ,Ø struct pci_bus O, struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); IORESOURCE_MEM IORESOURCE_IO qპঠ¸.R , ; ø64 :ܖ .}, \ǎࣣq< PCI ၠ±˫ฬპঠ 9þƑݣ:]E, 34°E¦ Ү) ¢٫!öÆ . \ǎ< PCI I/O ¤˫ฬ PCI პঠ, T პঠ¸#SE Ρ!პঠ T!BC Kၠ /T!4¸°~:=ႋ ,!=Õ˷9À҅. Ү9þ̤ ¿}I U ÌDE!79:°q }úéҵႋ = &¸°~:˷99: Ì qlmܖ>@ 8éT!˷9 ¤U¸#E° ~: !& °|9҅˷{no\҅ïȉE¸.]T! !,҅ቱූҮ9þ ¢˷9° ~:¢ȒE˷9 ¤E Ҕந = Ү9þ !=ၠ± ÑÒၠූúé 34 {࡙õ˷9 = Ү9þּ׷U ! & |9 DE!7 9: R°q }z,జà ༐ƑÑ!҈ :}~ß8,¢= &<= ˷9 ¢҅.= Ү9þ,˷9 ¤ƑDEÑõ҅4 Nၠ±Ҕந !!¤"60˷96 0= ¤ඪ+!!=ၠ±Ҕநûä != ¤ I/O <˷ 12.1.9. < 709:73 70;(8(43 *=;70;(8(43 à ' =$=5.(*70,/*.431(*-;90ß/0;!= *# :5 70;(8(43 9 89,9(. :38(30/ .,7 8:0*09*70;(8(43 ß897:.9 5.(*/0; ò/0;à ! #«%.!ၠ± Z ID , ÑÒ,ȩS pci_read_config_bye ÅÂJüBC : ȩS pci_read_ BCoቱූìD3}~4ÑÒ, Ƒ #«%. .8, zI 8 pci_write_ BC, 34 struct pci_bus * < devfn ìD>6Eº» struct pci_dev *. int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val); int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val); RÑÒû޻Ä<<= <˷9ÁE҈+n qܖDE, != ùúƑቱූҮ9þ ቅ ˫ FȒ 4Ä<< z̕ڣ,!=౧ý!ØH}Y̤࡙õBC¦S}Y׷ƑS !ܾͩ¯|Íͪ üÑ¬҅44Ñõðñ}~ ݣႋL SEҔந KEӍZê 3Ä`˷AIþ\ႋ|8ȑþzîӍ̤ȊӀܣ٫Æü༐ !T|4þ z·Ð8ȑüý, O2{ !=-.!=¬ ÑÒ ó 12.1.11. !"ݣႋ z°ቱƑ ©ඥS Ȼ& = $̕ڣ4æG '(3:+ ˷A Z,q qᄙ Ү9þ4 |Ä##&!%*'=%\ǎၠ±Ꮅ 34!=*= 8ȑP޻Ƒ©ª̤üýþ ሓ5 ቱDE|qT!ɢ"Ƒ ©ª48ȑ P޻ê҅!=¡ȉ!!ၠ±ၠූ Ү9þ ec҅!= ၠ±nE׷၏KL}I 4Ä< Ү9þ ##&!%*' =%!= *= ! ±Oၠ±°ȩSƑ ©ª Û` ˩ !ၠ,!Ρ!Ƒ ©ªno,҅ቱූ Ү9þƑݗã҅ၠ±°q2̤ 5 !ၠ± !!ၠ±ȩS ɢXၘȋ !!၏KLҔOȩS @!౧ ª |Äቱූ Ү9þS Eã##&!%*!=%ȉǎ !=*= þÊɑ,ඥ¦O X֧ÈóôÆ T{Ȼè֧ÈFȒê üýþ þ޻M¿ÀƑ©ඥß¬ªà̤ Ƒ© þƑ D࡚Ƒ©°U˩=ࣣq ȑ#$O Ƒ© !!౧ªUóô P޻̤5!Û`2!!!=P޻þq!Ƒ ©ඥno>ၠ °ȩS ȑ ٫ê3Ä`34\(<)ַؿ6< ༐Ôz < (9 07747 ò ò /0, 9 (1ß708:9à ;2;(76 à##&!%*'=%708:9 5.(*70,/*.431(*-;90ß/0;!= *= ٫²S s࡚À> ,జ,zI»ÌƑnZ ! ҾìDƑƑ ©«8D࡚SEüýƑ ©!= ö» Ì> 6Äቱූu༐E XÚ9, ##&!%*!=%ሓၠ±4 û4UƑ ©Ꮅ҅õõ >6Ä!=*= 34 DEᎵû ҅4 ¸>ɢ à4##&!%*!=%8éၠ±VWƑ © Ү9þ ß!=*= ! Ƒܼ̤ɢÚ ၣ4࡙##&!%*' =%!=*= Ꮅ ؿؽÏƑ©«DE,Ȼè ǎȩS !& 12 !Ƒ ©ඥ34Ҕ ¯ Tˋ!u༐ҧà҅4##&!%*' =%ß!= *= Ƒ©«U9ǎቱූҮ9þ noᎵ |> 6ȩS҅ Ƒ©«êၠ± !èéቱ , '(3:+ Å ၏KL\ǎƑ©!= 4{Áüý 12.1.10. PCI Ƒ .Eპঠ٫ ֽӀ PCI Ү9þ, DE·ÐèéȩS҅.!ၠ±Ꮅ°҈ ÑÒȩS pci_resource_ BC, !¸.\ PCI პঠ¢ ၠූ.!˷9 ¤4° ~:no/Û`<Úݖ. b¸.ã?4ûT IORESOURCE_READONLY IORESOURCE_PREFETCH !T e¸ .Uၠූ.!no|q 8éU˫ ฬ I/O ¤9,, ¹̤S,=$T!=$ˮ{îӍඥҵႋ ҅PEቅ 0®=!$üýþöq .8S,*!ިO#¬ '#++ ·d ౧҅N í8=$a,*!¹̤ }ȩS ýo no҅.öqÉ ඥîӍ ãä4 50==၏KLRèéêS qᄙ46¨© ª஧EÍͪ¾ၠ± KO øූ ඥ oíƧ҅è ¦§ 12< ¨ÅÁ Bz !N4 ý!hܽzEà ==$ ၠ၏ ß¢ύnoê·Ð)ַ11EÉ¡¢£ 5üýþ¯ q 5ܖ }I =$12 í84҅ U , ! ȏ·O T!޻&ඥq !#Ѥ૵3`Ȗ°ÁðôȖ¦Ó=$ ၠ± n\ !=4° !3ü48éȖ4T! ¸¹ >!=$ Ҕந6 ǎ!=ø6noȖ¹VW5 8éၠ± ¤ Nno4 ¸õȊ34҅aWq ၠ၏O=$ ඥ ¸õ $ ?ȉ'~a3:5. ҮL|1Ȋȉ٫ȉǎ"z! @< ?"1˷cstQu%vw\]˷c^Ƒe1fg, ҅%hiC҈k1 lC^=mno1pּr<ၠ3 /8 Ƒ\]"^_ ?"C 5.:9a8 ᆿ\<˷cd 5.>@ȖQၠ3RS1TU˸@Wந҅1 IJ˷LM1ၠ3*ؿE%FG ?@1ABC ቅ"ቱූ%&'(*+, -./01ၠ3 48 *+%-6789:;<=ந>@Ҕ 574.5. <574.-:85.٫ !>@ȏƱ SBus 5, ၏KL ëì 6TÃ ᆿ ÷O4 TÃ ሩª !3!޻& , !ö÷ቱූ ÁÂ γɑT!ၠ±4!3! SyE Xn Kˣ "ǎT!ý" ၏KL6 ࢨሓ !3! °Uቱ |,Å҅6 ࢨ =$ 434$ၠ± ַd «E¸#!3! ቱȩS$ Pඥ̤>ၠ ȉҧT · d¸## !ၠ±öq !!!3!à ê၏KLƑ !!!3! >ၠ !üC @EΧ´µ«ß$ýoÑÒቱ !!=$«ඥ P޻̤!!°S¡ȉ ඥࣣq!¤Ѥ PßýO à ! ýo޻&}~ һ౧Àýၠ±óôቱූҮ9þ< E࡚T!ඥà ౒¾Eà ! 3!¾¸4 Xeਖ਼ÜÆ,!= ၠ±Ƒq =ؿ˫äֽӀ#$޻& ß=$ ¹!= ! 3!ၠ±Ҕந°øቱ= ¤! = $Mø¾ቱ =$ၠ± !¶·ඪ+ Eðô<ቱූÉ ඥၠ၏ @EγKγS"T <ቱූîӍ Ìַ\Hͪ޻& ౒ΡÅæ !ö÷¾=$ ၠ± ሩªöNၠ၏no >6 12.2.3. γ*γ+,- 6à no\҅.ࣣqM2 պº BC(8,*70,/- < ҅ »¼ èé,¢ȩS= ˷9 ¢Ƒ౒ Ρ !ܾ¯༐¢¦޸¨ =#"«¢ ޸¨ȩS, ӍZ()ܾ¯²Sǎ=$ ၠ±Ꮅ°޸¨ = &noƑ©ඥؿU¦ܖ, జ ༐!Ƒ©üý ¢¢Åæ H¹4= &< =#" ඥ ˸ , Ȗ°ȩS\ǎ() ˷AƑࣣqö÷պ EÁ ǎ9:=$ ၠ±ßႋ\!=ቅeq.8à 12.2.2. ISA '( ༐Ƒcd ,జ¢ Ӏ 7˩ ,¢Ƒ©˩> @,ᆿ =$ ˋ1, ၠ±Á˩Nၠ± ˋ 1T eһ౧ ύ !Ƒ ©ඥé4 8éၠ±U࡙ቱූ ҅.° iந҅.¦Ó,ȩSq޻& ˩ܖ ".!q¯C¾Ƒ©ඥU P޻̤=$ඥ no҅\=$ ၠ± జ!°Sპঠ4Ƒ©ඥ U '(3:+ û޻VW no ë˷A EVW҅4¸ÅÁ ˷9}I, JÁ ၠ±ȩSê¾ ၠ± z ˮ{ÕΧ<[{ ' U!= $ Æ ̤ ÀÁê= Ү9þ<ၠ± <˷9< ÀÁÆ ̤ !=$ ၠ±°|ȩS˷99:Mͪ¶· 8é= &°SÆU¯ ¥¥ +5 + ၠ±° ÅȩS& + ! ¿À,.8 ඥE´µၠ± Ү9þ !&̤Ȋ Æ noȩSÑÒ¿À >ၠ Ñ̓T!¯!ȊÑÌȊ ȑၠ± ¶׷+ !&DE ȑ,Æ ̤ Æ ˷R U| °S ÁE T¯ȉඥ ǳÑÌȊ !һ౧ +5 üýþVW Æ= &˷9ßγ üýþq´ ඥà !=$ၠ±°ቱ±q= &˷9¤<Ƒ©ඥ 12.2.1. !"პঠ «! & °ÁêST! ±²34 ɑҒ!ၠ± !1q=$#$Ê ¯ළ Χ D࡚ ၠ±׷Ȋ+.8(ǎ 5Àbý"4~ þ =$Ꮅèé9,ǎ '(3:+ ˷A êÊ¯ළ Ꮅ<$$= ቱූ34҅. >6 ȑöNFȒ·ÐVW=$ၠ±U ᆿ<˩Ƒ©ඥ ඥ25ޖ ȉၠ޻&34҅.4 ඥ ! ඥ<҅. !ÀÁ ̤ ȑ ,õSHI § D࡚ᆿ Ëà4 à@Ƒ˩1C"Ѥ1 8"ၠ3Ꮅ* ˷Aq12HȒ,!3!ၠ±VWÈ,D࡚12 ਖ਼Ü޻&<À ̵˷A iÙÓU Éý .҅޸¨BCüý!3! ၠ± ˬᄙ Ȗ°ओ\ /7(;078309.8éȖ\!3!ቱූᆿ 3, ȑ°ÅÅæ!= ၠ±noÇ¾ܾ¯ < =$ඥÇ¯ = Á ȖaI\Æ¯ၠ±q ÅÆ 4õq noγɑÅæ ::8 34 *Ʀ °ܼ̤!lǾඥ| Ҿ$:8 ƑҔந !၏KL·ÐnoD ࡚°Á, ȑ 479 4DEÑzþ4D ´µÌ҅.¦ Ó ƑE 479 ×Ü,҅. !# $:8 >ၠȩS !ÑÌþ,!!>ၠÛ`üý ̒௯N¤ýoD࡚ࣣq ؿ6Ҕந !öÆ4ၠ±êST!ඥ noI Ç˩ܖ Ûüýþၠ၏ OT!ၠ၏´µU Ҕ ÚOà & ˷A< !& ˷Aóôß604ÀýO 60äJ,ûၠ၏EÚW$!#üýþ һ౧Ó,޻&ඥOȩS Àý MTÃT!ၠ၏UN౒Ì"ǎ& ͫ༫,ඪ@E= &ß˷9౧ý Ρˍà̤ඥ MT! !T6 ࢨP޻5MÑÌ ×Ø n¿À҅.̤Àý |̒ ! Piၠ D࡚ؿቱ<ޖȩS×ØE ÂÃC T!ඥ= ɯ3¦§ Hͪ TÃ Æ ၠ၏»Ö45·Ðᆿ ၠ±< KE౒ÌܣT!Ìno !=˹VW҅.à γɑ,=$ùúƱèU Ôၘ¨ ÅÁ îӍ̤$:8 ¡ȉß#Þßà ȖKˣ> #ސÌ KLȩS҅ànoE= >ၠï ҅V4üýþóôßһ౧ |q$!#၏ၠ၏һ౧҅è ]ந¨ ÅÁ! ¸õÓ$:8 ȩ ޻҅.>ၠ ׷N၏KLቱ±q !=Û=$޻&ඥ N (ǎ$!# HȒIȩS $:8 EP $:8 Zၠ± Ƒ ',3.0 Ê¯ළᎵ< =ÁÂᎵ°üý '' 34 , '(3:+ N˷AVWȉ '' =9, ࣣqöno࡙,¢O½ 6Ò̤bI ȩ҅.>P޻þ4°S Te¢óô ¢ '' >ၠȩS =$¡ȉ4 Jc DENqø6«ܖ ¡ȉ¢=$ P޻þT !ၠ±°|KˣT!> P޻þßSKˣ!˫ ฬ=$ P޻þàDE''ሓ¨ ¡ȉ =$ P޻þ ÑÒÍͪజ! $'4., :8ß''à޻&ඥ҅îӍ!\ =$îӍ4 ' 12.4.3. 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P²̤޻-&$ ޻-&$ ÓëÚ :8- í Ñ Ñ Ñ .0 85.8ë8/0; .0 mƑ! £0Ñab :8-*/0; 43 ;07 8 + 8500/ ï 8 9,90 ï + 54C07 ï Ý/ 2,.A ï /'03/47 ï 1 IN Nnã´1«²Nnv«² USB ၠ4 È² unsigned int usb_rcvbulkpipe(struct usb_device *dev, unsigned int endpoint) 1 OUT Nnã´1«² Nnv«² USB ၠ4 È² unsigned int usb_sndbulkpipe(struct usb_device *dev, unsigned in t endpoint) }~ IN Nnã´1«² Nnv«² USB ၠ4. È² unsigned int usb_rcvctrlpipe(struct usb_device *dev, unsigned int endpoint) }~ OUT Nnã«²´1«² Nnv USB ၠ4 . È² unsigned int usb_sndctrlpipe(struct usb_device *dev, unsigned int endpoint) 89. ऋþV. I NnÀ6ޖ¢ၠූAab<, Ꮅȩ Ä ãÍ ׷, Ȼ A urb !̤ USB ؽ̵. »¼ ,ãA urb ¿!̤«² struct usb_device. A Ïl ؿ8! USB Ꮅ ,٫,Nn unsigned int pipe !̤ USB ؽ̵. »¼, A urbÈVA u rb ¿̤ struct usb_device ÈÉ. AÏlؿ8! 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Nnݗ?KL. oᖔ̤ޖ9ݗ?ÓaE, ׷ޖ1 OUT urb T)èÆ 8àූȉ, URB_ZERO_PACKET I<.ܖ ූ@A ȉ urb ȉּ׷)ၠූ, ¡¢1 UHCI }~xx"#@ CPU ݫ, ,C PCI ඥ! 4ؗ ၠ -è Front Side Bus Reclamation ±ᇕ. AÀ1 UHCI USB }~xᎵȩ , ,CcH҅)¿ URB_NO_FSBR *࡛G. ,CAB̵aE. #ؽȩAȉ, ¡¢҅61FǎÒC, Aã4ؗx̤ urb ҈D! 8àූȉ, ãA urb o usb_unlink_urb ÒGƦ@=AB, ,CA urb !ù§޻. URB_ASYNC_UNLINK ҅!ූȉ, USB ؽȩA! setup_dma ÏlÓ) setup_packet ÏlÈV >̒ . DMA >̒ :;#@ urb. 8à ႋ URB_NO_TRANSFER_DMA_MAP ȉ, A ȉ$}~1 URB_NO_SETUP_DMA_MAP >̒, )! transfer_buffer ÏlÈV >̒. ¿! DMA >̒ . USB ؽȩA! transfer_dma ÏlÈV ּ׷!ූȉ, ׷ urb èÆ URB_NO_TRANSFER_DMA_MAP .٫ , 8àࣣ1ቅ = . Ä &༐ ˫ǎ* ࡛ urb l ,:٤ start_frame ɢ,Cؿ 8®¯ ࡙ ࡚nၠූA urb Ƒ start_frame Ïl . 8àoǎ* ࡛ urb A ȉࣣ1!ූ ȉ, Ꮅؿ 8È² 8àA urb * ࡛, A ȉ6!ූ ȉ8àᎵ 5A urb !Ò1, À¿´ҧˋ҅Ah , ,C URB_ISO_AS AP o USB ၠ4© urb 1, )à urbs. :;. A ɢÀ IN NnX6® *9©, ּ׷! USB ؽ׷Ȓ ׷ූȉ, ҅È?Üȑ URB_SHORT_NOT_OK A USB Ꮅ 5A urb *Ǯ â. 6ɢ:ޖAÏl 6!ၠූ¢)*ȉɢ, þ unsigned int transfer_flags *࡛ IN Nnã´1«² Nnv«² USB ၠ4 È² unsigned int usb_rcvisocpipe(struct usb_device *dev, unsigned int endpoint) *࡛ OUT Nnã´1«²Nnv«² USB ၠ4 È² unsigned int usb_sndisocpipe(struct usb_device *dev, unsigned int endpoint) Ƒk IN Nnã´1«² Nnv«² USB ၠ4 È² unsigned int usb_rcvintpipe(struct usb_device *dev, unsigned int endpoint) Ƒk OUT Nnã´1«²Nnv«² USB ၠ4 È² unsigned int usb_sndintpipe(struct usb_device *dev, unsigned int endpoint) *989:11 :;³Ƒ - • :;: A urb *Ä -EPROTO bug. ȖᎵƑ A urb ab ! USB }~x JVƑ. 8à ȖᎵ c̤A ɢ, ҅ -EINPROGRESS , ,C transfer_flags Ïl!ၠූ¢ URB_ASYNC_UNLINK.urb !o usb_unlink_urb Ò -ECONNRESET A urb !o usb_kill_urb Òɶࡘ . -ENOENT A urb ³< ͩ. 0 AÏl 1 Õɢ è`: iso_frame_desc Ïl. . ¢\H * ࡛ urb X '`a , ּ׷Y¦< ͩɢ(0)ÀÈ0 A urb :! lƑ A urb ! USB ؽJ V׷Ƒ. oǎ*࡛ urb, A Ï* ,̕ڣ[\ ). A©~ [ࡘ༐Ƒ urb ҈̒Ê##. ®6ޖ A urb(oǎ IN urb)޻%. oǎ IN urb, Aؿ 8!$%& transfer_buffer_length Ïl, ¡¢޻ Ҕ= 1, YA urb ( oǎ OUT urb)Yޖ¢׷A urb !҈<, AÏl!ၠූ int actual_length Ïl༐&༐. n ÈÉ, ҅6! USB Ꮅၠූ . ҅6҈̒. ȉǎ࡙³ dma_addr_t setup_dma }~ urb 1Õ. A Ïl Ào . ³!̵ ޖ}~ urb setup ݗ? ÈÉ. ҅ ȉǎ³ >̒ Ƒ ÈV ã unsigned char *setup_packet Ƒ W, ,Cȩ USB }~xXi¢l #W, s7 Çַ #>̒ . urb ޖÊ 1 AJÊ³* USB V. 7Ǟ . ޖi̒ ! USB ؽ urb ȩ). 8à 6! >̒=1, ! transfer_buffer Y transfer_dma ÏlÈV(ǎÀ1 int transfer_buffer_length struct usb_iso_packet_descriptor abඪ. A Ào*࡛ urb 1Õ. A Ïl ඪ̒ Îv. A ɢؿ8! USB Ꮅၠ int number_of_packets 8! USB Ꮅၠූã*࡛YƑk urb, A urb !̤ USB ؽ̵. Ρȉ. Aɢؿ¢خ U(ၠ4, ΡȉV, ҅4*ǎ¡¢. oǎၠ4 , ΡȉҋVၠ4, ҅4*ǎ 1/8 ၠ4(1Ó)*. oǎȊ(<ޖurb !ᆾ . AÀoƑ kY *࡛ urb 1Õ. A ɢΡȉȻ int interval »Vv.ၠූYAB*࡛³¿ȩ int start_frame 4̤၏ඥq . , Y޻ၠG, ၠ4¨, :;ɢ -EPROTO, -EILSEQ, < -EOVERFLOW È0ၠ45 ၠ4! §!7Ǟ . ҅Ʊ6 *׷Aၠ4ቱූÛÏ, ÓA urb !7Ǟãၠ4. A USB }~xᎵ1j¾:;; ҅ந:!kࡘ , Yၠ4@* A urb -EINVAL Ào*࡛ urb *, ,C/³ÀËi ҈<. ¢@̓²³ Ǯâ, Ꮅؿ 8Ρ¾V`a. -EXDEV A USB ၠ4நdeƑ,. -ENODEV ࣣ1̤.ޖࢨ҈Q l À *׷ URB_SHORT_NOT_OK Úf!ၠූ urb transfer_flags Ïl , ,C / urb ° -EREMOTEIO #. Ê ݗ? Êǎ Nn«²ޖ% "babble" :; *׷N n޻ "babble" :;. A urb * -EOVERFLOW OUT urb. m. A :; Ào )ޖ de ˷éƑ \8Hᄣ ¯W, 7ɑ6X°ࢨ USB®(ޖ³Ƒ -ENOSR ޻Wǎ®! àˣde˷é. A :; ɢÀo IN urb.ޖ³Ƒ -ECOMM usb_clear_halt Ò. o ã }~ Nn, A :; 6! (§ T A Nnந! ɶࡘ . 8àAèÆ Nn) -EPIPE CRC )eቱ. A urb ³Ƒ1 -EILSEQ ࣣ1 O̤dּV5 • AãèÆ ϤÑ k3907;,Ý 39/ Z.43909.;4 :8-*.425Ý090*9 .42 5Ý090.39 -:1107*Ý03G9A. / Z97,3 8107*-:1107.;450. 539 G30/:38 .0 Z/0; .897:.9 :8-*/0;39*:7-8 97:.9 :7- Z:7-.ÝÝ*/ :8-*1;4 nÑ ƑkN ၠ4&$ :7- $ã »¼$࡙պqã. 39*:7-ÝÝ*ã :8-*1 13.3.2.1. Ƒ urb ˹é8҅ Ꮅ)®:7- ab ,.Aã!Ò. 897:.9 :7- ÈÉÈVȖ¿./ Ϥ k/ :8-*1700*:7-8 97:.9 :7- Z:7-;4 ϤÑ AãÀ1Ꮅؿ8Ò :8-*1700*:7- ãؽᎵ ҈A :7-.&$ ༐ »¼)*89 :7- Ä8ȑؽ ȩ̵&$»¼҅6! ҅ؿ 8!࡙ :7- . ,CᎵó¿ ࡙(VؽƑ*@. &$ U:;. & 8à AB ɢ ÈV :7- ÈÉ!ABãÒ éãA :7- <ͩ. 8àAãiቱ ᄣ¯˷ ˫ǎABÚf༐ &.Zజ༐. Ϥ*Úf89 1Ý,G 8 <³Äã $2,ÝÝ4. ãÒ$˷iቱ˷é202*1Ý,G8.Ϥ. జ AÏl ּ׷!ၠූ¢ *࡛ :7-. 8à Ȗ)5"# A :7- ּ׷èÆ* ࡛ݗ? Ê84*5,.$09 .Ϥ. జ k39 202*1Ý,G884* 5,.$098. 39897:.9 :7- Z:8-*,ÝÝ4.*:7- Aã1A ύ9Ñ ҅ؿ8ȩo :8-*,ÝÝ4.*:7- ã ÒÓ!"#:7- ȩ-၏þ p ؽã&$ ¡¢A6®oabƑ. Y½897:.9 :7- abᎵƑؿ 8)! Ra"#. <࢓ urb 13.3.2. Aݗ? Ρ ¾*࡛³ `a. ҅6 ç*hABɢ8* struct urb ab`aÏl. nsigned int status .1 =ޖ ̒<޻̤ãA*࡛ݗ? ³ unsigned int actual_length Aݗ? ³>̒=1. unsigned int len gth 2༐ 0 »). Ƒɯ (జ̒<³ܖޖ?ݗ unsigned int offset <ඪ<: ab usb_iso_packet_descriptor Ä n²Ç* ࡛³. ҅Ʊ$wIΡ ¾³³`a. abˋΡ urb $ k/ Z.43909;4:8-*.425Ý090*9 .42 5Ý090 . 39 -:1107*Ý03G9A. / Z97,3 8107*-:1107.;4 G30/ .A,7 Z809:5*5,.$09 .:3850. 539 G30/:38 .0 Z/0; .897:.9 :8-*/0;ÝÝ*.43974Ý*:7-897:.9 :7- Z:7-./ :8-*1;4 ÝÝ*.43974Ý*:7- ÒÑȩoã :8-*1»¼GƦ< 1 :7- *þ %.}~ :7- ! 13.3.2.3. urb )AᎵ×҈< ¡࡚ÜȑoA<rÛ)HÏl.39*:7- ã)ၠූ :7- Ƒ 97,38107*1Ý,G8ÝÝ*:8-*1 50 ãÒ:8-*7.;-:Ý$5 50 Y »¼o :8-* 83/-:Ý$550 Ïlؿ8!5 39 G0/°A :38 ɢ 3907;,Ý Ϥ¡¢ -:Ý$ :7- ࣣ1 ࣣ1 É.39*:7- ã5*ÝÝ*AãϤ< :8-*1 k/ Z.43909;4 :8-*.425Ý090*9 .42 5Ý090.39 -:1107*Ý03G9A. / Z97,3 8107*-:1107.;450. 539 G30/:38 .0 Z/0;.897:.9 :8-*/0;ÝÝ*-:Ý$*:7-8 97:.9 :7- Z:7- ./ :8-*1;4 ҅$8࡚ÑÝÝ*-:Ý$*:7-.èA ã :8-*1 »¼ ႋƑk :7-1 :7- ! 13.3.2.2. urb , $ܼ̤A ɢ࡙Ρȉ.A urb ּ׷!Ò1 . ̵ struct urb ab int interval 1ÈÉ, ҅!̤ͪA urb ab¢7!҈̒= 1, ! transfer_buffer ÈÉÈV . int buffer_length ؿ8ȩ kmalloc Ò$"#. Ra>̒ ,C ޻ %. A)®!ޖˣ 8Y\!ޖ?÷ÈV >̒ÈÉ, ቅ void *transfer_buffer usb_rcvintpipe ã. A urb ¿!̤ USB ၠ4«² Nn. Aɢ!"#, ȩ̵7T usb_sndintpipe Y unsigned int pipe A urb ¿̤ USB ၠ4 . struct usb_device *dev »¼ urb ÈÉ.ÈV¿! struct urb *urb :Aɢּ׷!ȩ Wȑ Ä GFP_ATOMIC 9*:7- !ÒÑȑ :8-*8:-2ޖþ࡙À1 1 Õɢ6. ؿ8࡙ ÏlÈ²202*1Ý,G8. Ƒ kXÄ? 9*:7- 6!Üȑ!Òè`¡¢ ã :8-*8:-2 -é8 :7- abÜȑ<x̤҈<ã!Òּ׷) ؽ.&$ :7- !<ͩ7Ǟã ؽ8ȑOiቱÜȑ˷é>̒A&$,C$cH*h Ϥ. Ϥ4*ǎ³Äã $2,ÝÝ4. Ò202*1Ý,G8 ҅¿!̤ၠ4ÈV :7- ÈÉ. :7- Ϥ k39 202*1Ý,G89*:7-897:.9 :7- Z:7- .39 :8-*8:-2 9*:7- ҔநÑATÒã :8-*8:-2ၠ4 &$ ؽ$?̤&$ ҅:Û43! 7Ǟ ã»¼. Ꮅ&$ :7- !࡙ "#.,C! 13.3.3. 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Kobject *}Ush$%<҅8ȑDȒ ÅÆ&Y& Wó^« h*}r HI$% Ȗ*}Ô̵Ö{ú$º =4-?0.9 =4-?0.9 Ѥ1U= yÙ&=^É_ ˫ǎ1Ƒ, z ,-. cநh$%LMbQ҅ =4-?0.9 Ҕ Äª޻Ò!& %$ޖ"wx HIÃªÒ ඪ&4ȏ,ó &ၠ >+*(ޖ" =4 -?0.9& ҅<˷ Ǟǒ ,҅* uÜ 8818Ƒºநùrႋ҅ðÖ t &' 8$818 +~rs ׷ࣣ ˷ Q rÏorႋ<_&ቅrႋep҈g҅ _q3LM* l^« <_၏" "÷øh "rႋÙ3 nÛñ ˷rႋ~&ࣣ ñ lÉሓ҅ &m ªh< &׷ ႋ ၏" op Ulͫ<҅PQ நnܖ 8 97:.9 =4-?0 .9 lef < Hh &LM¶ ࡚ g҅Pj ౒Ρ <_၏"&Y҅dE҅~Ȓc_4-?0.9 `a$% &҅bQၠ 8098 <$:-889028 4-0.9 8 Zˬᄙ [\;] ̵&Y &ò)@ˣֽӀ^༐< 8ȑDȒX͵ቅqrÝÞ3:áၠWT ҈rÅÆ T &B3*ȒÐÒUV&BNO జ _,SF$% ò) JK &^«ӍÜȊӀၠඪ8ȑDȒ&ò)*ȖNh OP&ިR hq ඪ8ȑUs Ð ӀHI,HIXȩ GǎÔၠa ֽ¹ÕၠY &ò) Eǎ 3sCgh^ၗ8ȑ DȒ ͩ}´Bၠ^« 8818< _ ^ၗƱ<_၏"<Ã =4 -?0.98ef@˫W ༆ ef} ;&t8qÃၠȖ*}:ȩ_ »ò) జ 34̤½ȩ_ 897:.9 /0;Þ.0 Ô #$ ӀÖ-º, ´t8&^_ၠ> ڣ= 3 < &Y&Usၠ &LM6l҅, *҅&҈'()ၠ $%&Äª Ꮅ±Ȓᇕ" ܖ҅_ qHI &W¼׷ȩ =4 -?0.9 dE ³ &E ౒ΡÄÅÆÇA .14.1.1.4 ၘȋpu ܖ౒Ρ =809 ӀW Ƒ =809 <҅ =4-?0.98 ó, qႋ Ȗä &¶࡚&A]h =809 ´µ»Æ &@ã&҅ Ԩˣ =4 -?0.9½҅) 5,70 39 ± ð&~n =4 -?0.98Ʊ ´̕ ڣÅÆ N˷ ?Ƒ =809 bQ҅Ѥ/ =4 -?0.9*:3 70¬Þ8907 "& =4-?0 .9*/0ý < =4-?0 .9*5 :9 $5 ;4Þ/ =4 -?0.9*/0 ý»897:.9 =4-?0.9 ¨=4-?½´ <"Õ&=4 -?0.9 *}Oؿ¢Ô =809 Ƒ=º,Z sh<_´ ҈hȩ_pႋ<_ rhr=809 Ƒ3ඟ &:;& =4-?0.9 ~íÏ =4-?0.9*,//&҅<_၏"~íH׷ =4-?0.9*Þ3Þ 9 < =4-?0.9* ,// $5 h "ǳǳ 0á9073Þ39 =4-?0.9*70¬Þ8 907»897:.9 =4-?0.9 ¨=4 -?½´ ˷efñ ɑ "p C9½LM@ּּð҅é̕ڣ&Âַ±ּ׷ åؽh"*}Î»h8 Þ39 =4-?0.9*,//»897 :.9 =4-?0.9 ¨=4 -?½´ =809 ±ؿ¢´޻8 =4 -?0.9 ּ׷~í̤p =4-?0.9࡛« Ârႋ<҈ ´҅ =809 =4 -?0.9 ̤Hͪ ® =4-?0.98ࣣ ؿO 8818 Ƒºந &Yù =809 ± =4 -?0.9 tºநቅ8818׹Ï҅ =809 e~SLMͪˣ̤1 &&68818Ƒºந ´ ɢG =8098ؗ =4-?0.9 @ ñé~rð&8̕ ڣ=809 ˷Å 3ඟ ҅ =4-?0.9&LM҅*+ &Äª ҔåÕ&ù =809 yOͩ}3ඟ´҅*~׷ȒӀ Ï =4 -?0.983|Í¶࡚& rႋ*+ºநB/5Ƒ ÐÍh2·e~Æ+ǎ ˫ܖ/5 &897:. 9 =809 ~15<rႋÍ897:.9 =4-?*950 ˫ Y &0 =4-?0.9 /5 $% Ԩˣ̤ @ Í =809 =4 -?*9 50 $% .Ӎ´ó,ႋ 809= &̕ڣª 14.1.2.1. Ksets ႋ ༐Ƒ¤Ȓô ò)ó̤h8ȑ DȒ&ôȊÒ88185,7039 ´µ yO_ -8818ӀWƑoȉ rႋ &$ၠ& ҅ 5,7039 ´µ *} ´Ühၠ~¿ˣ ~:- =4-?0.9 Ü%&t8 & 8 ÒÕð ӀWƑ ´]#$rႋ´µ$% =4-?0.9 Ƒ 5,7039 ± °Îrǎh޻p5,70 39 ´µ < =809 8 Æ ӀÒ$%Ƒ &,ቱ࡙~Ѥ1$% _,޻rႋ̤ =4-?0.9 $% kobject Ӏ , kset, <Ѥ .14.1.2 &Ѥ1 ±˫1պRS =809 ȉූ ӀWƑ&Y &FOѤ1ù =809 ؿ¢Ӑǎ NO®Ö r =809 n M&Ѥ1&¶࡚&#Ҕ° <´ 897:.9 7©* 802,5~470 7© 802´ 897:.9 =809 =809´ 897:.98:-88902 ¦ ౒Ρ$%p Ѥ1Ã ༐Ƒ`aDÍ¼ &8ôÍ¼ ôHͪ Ȗ*}NOǮÌ &&DѤ1 ´8%Ȗ:h¯K&˹L ^::Ꮅ±Ȓ ƦÔBNO W IѤ1Ïù˷eÉúඥÍ/0;Þ.08*8:-88» 88 /0; Þ.08&ؽၠӀW½&+ ၠ½& q˷ƑtѤѤ 1no -ý 4.=* 8:-88» 88 -ý4.=& ÏӀWÒ ½ºந8818 »YB Ѥ1ÐÒÅÆ4ȏr˷Ѥ1Ȓ 14.1.2.3. Ѥ ¶࡚< Ѥ1gѤ1 ´µ »'8:-88½ =809 n& &ÝÝ&¶ =809 Ƒ @ ±Ҕ åȩ_ቅ ±~H ּ_Ƒ&897:. 9 =4-?0.9 Ƒ =950$%& AFGǎ =4-?0.9 Ƒ =9 50 ± hÍ´µ» =90 ±½ ´] =4-?0.9*950 $%,`a҅n =4-?0.9 =8098 =4-?&ô%~03,20ô½´ =4-?0.9*809*3,20»2*809 ၠූ҅ ÙѤ_p =809 ' 2*809&Ȗ ¶࡚&8%ȖÙѤ& m&ǎԨˣ =4-?0 .9 =809 ;4Þ/ =809*5 :9»8 97:. 9 =809 ¨=809½´ 897:.9 =809 ¨=809*¬09»8 97:.9 =809 ¨=809½´ p@2 ̕ڣ&"౧U =809 8<_၏ rÅÆ&hq"° =809 ԨˣrႋÕ Ë_ÍǾ =4 -?0.9* " ;4Þ/ =809*:370¬ Þ8907»897 :.9 =809 ¨=809 ½´ Þ39 =809*70¬Þ8907»8 97:. 9 =809 ¨=809½´ Þ39 =809*,//»897:.9 =809 ¨=809 ½´ ;4Þ/ =809*Þ3Þ9»897:.9 =809 ¨=809½´ ð{ "mp ÍǾǎ =4 -?0.98޻ÚÑ rǎdE ³<ၠූ&=8098 Ȓ 14.1.2.2. ksets =4 -?0.9 5,7039 BOࢨn =809» һ౧lȑ#$ ඪB*} ÒÓ ܖ_¯ 8~4© ñl &Ȗ*Oâã҅Æª ӐX٫é Ρ&[*Tɢ´8%Ȗ Äª8818tù ӐXּ׷nhy ޖ"å~é Ҕ Þ༐½&LMé *$dxhñlּ׷ÏoӐXɢÄ@s̒ &Ooࣣ uv҅»҅ !f_ ´] =4 -?0.9 ´µ ± hqõ& Y&B Ꮅð½ ÜၠᎵ±Ѥõ» 88-:8 1eÉၠ&¹#$ ܖ½ 8818 Ѥõ»88/0;Þ.08t8 &aቅFͪHI Y˷Ƒrႋ ˫1õ$%&҅ =4 -?0.98 ӀWඪ B88181 ^ 14.2.4. ޻ Þ398818*7024;0*-Þ3*1Þý 0»897:.9 =4-?0 .9 ¨=4-?&897:. 9-Þ3*,997Þ-:90 ¨,997½´ zsǌ@ÎӐX*_p Þ398818*.70,90*-Þ3*1Þý 0»897:.9 =4-?0 .9 ¨=4-?&897:. 9-Þ3*,997Þ-:90 ¨,997½´ ǌ@Î ӐX&Ë_pǌ@ÎӐXؿ¢´҅)B} S:bӐX õ $ޖ"࡚Ҕநǌ@Î ӐX ؿ¢}Ø+#$ñé̓o ᇕUÃúඥᎵ±ÒƑ ÅÆDȒ½×¿Á= yÙ»ႋၠ t §ࡘ ×¿Á=yÙ´lȑ ÑÌé ּ׷ɢ ࡙ éh¯˷Éሓ$Ҽz® &ÝÝˣÚȖYͪ©Ö& 8%ȖYͪlȑ£ä̤ 03;5 &6Yͪ-:1107* 8Þr0 Þ༐h hq£äּ׷ ~Ä ˣs̒&s̒ɢ ãé½´҅ 3:2*0 3;5 ˣ Ú£ä »+^ ñ, m&µ஧9£äo03;5 "ඪ &=809 < =4-?0 .9 `a= yÙÏrႋ8 Þ39-:1107*8Þr0½´ .~,7 ¨¨03;5&Þ393:2*0 3;5&.~,7 ¨-:11 07& Þ39»¨~495ý:¬½»897:.9 =809 ¨=809&897:.9 =4-?0 .9 ¨=4-?& p˹W&hñ lύ̵ Yͪ _஧9£ä°&, Ë_h ¤B § ×¿Áñl»~495ý:¬½Ïgt஧ 9Ƒí¥¥ ܖ$#×¿Á¤B*} :Éሓ ౒Ρz5íÏ_ ÞƖ ּ҅׷élefhÙѤ 3,20 ×¿ÁñϤ "׷_ ×¿Á Âַ~Ë_&҅~íÏ@˫Ѥ13,20 Ȓ҅ Õ ñæ ᄣ+̓oòh= ּ׷yÙÆBø¢ =4-?0 .9 Íh®& < 709 :73»»=9 50 =950*-ý4.=½¡¡ »=9 50 =950*5 ,79½½´ 897:.9 =4-?*950 ¨=950 ¬09*=950»=4-?½´ ¦ 89,9Þ.Þ39-ý4.=*~495ý: ¬*1Þý907»897:.9 =809 ¨= 809&897:.9 =4-?0.9 ¨=4 -?½ ҅ó,8࡚p¶࡚1Þý907 ñlˋÄ= yÙ°Ï <Æ =4-?0.98 { B˫ؽ ࢨ_ *} :r ÆÆHͪȒºּ& Y࡙҅Ü&Æ&<ࢨ { Í =4-?0.9 _ ቅ® & ၠѤ1 tѤ˫ǎhñl¯~ȩ_ &âãȒ zB °&,̓oz=ּ׷~íÏ_ + hñ l&¶࡚&Ï =809 &=ࣣ 8%1Þý907 é=1Þý 907 ×¿Á¤Ȓ~ Ë_ôȑ<˷âãÏo =4-?0.9 yÙ ޻8ȩ_h =809 ×¿Á¤Ȓ =809´ =4 -?0.9 Ҕ =809 Ƒ&˷ 4ӀW»^« 5,7039 ´µ½ ̤҅ந Ïo =4 -?0.9 Bn8%´] h$%´µ =809 $% ~495 ý:¬*458±Ƒ <´ Þ39-:1107*8Þr0½´ .~,7 ¨¨03;5&Þ393:2*0 3;5&.~,7 ¨-:11 07& Þ39»¨~495 ý:¬½»897 :.9 =809 ¨= 809&897 :.9 =4-?0 .9 ¨=4 -?& .~,7 ¨»¨3, 20½»897:.9 =809 ¨=809&897:.9 =4-?0 .9 ¨=4-?½´ Þ39»¨1Þý907½»897:.9 =809 ¨=809&897:.9 =4-?0 .9 ¨=4-?½´ 495ý:¬*458 ¦~*809= 9.:897 ඥÙѤ&+lȑǼf҅ñl Y &ò)ҔBGB´oúؽU -:8*950 ±OࢨdE ³´ÅÆÃၠ ~495ý:¬ ý //*~495ý:¬&<´ 2,9.~ ý //*2,9.~&3,20 ôý//ô&897:.9-:8*950 ý //*-:8*950 ¦ 8ðp húඥ S҅-:8*950 $%&úඥҔந 'ý //-:88ò)e«& tѤঠn ˸14.4.1.1. ඥ Øñlò) ᎰÕ &+ܖ ˣúඥၠ¿ ܖ>±ÉúඥᎵ úඥn =8098&e @ &҅)úඥ Ѥ1ðÖ1Bȉǎ8818Ӏ &Y Ȗ*Ôh$%Ƒṳùúඥ҅Ѥ1 ´hѤ3,20 ±úඥÙѤ& q 5.Þ <´ ¨$4201Þ 0ý/842Þ990/ ¨ Þ393: 2*03;5&.~,7 ¨-:1107&Þ39-:1107*8Þ r0½´ Þ39»¨~495 ý:¬½»897:.9 /0;Þ.0 ¨/0;&. ~,7 ¨¨03;5& 897:.9 /0; Þ.0 ¨»¨,//½»8 97:.9 /0;Þ.0 ¨ 5,7039&.~,7 ¨-:8 *Þ/½´ Þ39»¨2,9.~½»8 97:. 9 /0; Þ.0 ¨/0;&897:.9 /0;Þ. 0*/7Þ;07 ¨/7;½´ 897:.9 =809 /0;Þ.08´ 897:.9 =809 /7 Þ;07 8´ 897:.98:-889028:-88´ .~,7 ¨3,20 ´ 897:.9-:8*950 ¦ ,ႋp h$%ó~úඥÃ -:8*950 $% &o |ýÞ3:á /0;Þ.0Ƒ &ÝÞ3:áၠ Ҕå޻Üúඥ<҅)Îၠၠ!d ၠ &t8 &$ Î| úඥ*+¿ˣ ˷Å&ô֧ ôúඥ޻&׷ ҅ úඥၠt^« ܖ& ၠ ^ሓÆªၠúඥU|< 14.4.1. ඥ ǮÌÆ ²NO ቅÒ¼ K¢£ Y&rlȑ [3Ò !d&&$VӀÖ ®ÖÙg& _ h6٫ DúඥÍNOYͪ úඥÒ¼U&LM Ȓ hࢠ֧^༐ ^W&Äª Ꮅ±ȒB&NOh® UV˹ 8.:ýý5 Ꮅ±,ô ޻ˣ ô̤húඥ Dúඥ &ò)'ý //-:8&>@LM¯¢࡚&ò)¾¿ FÐÒˣÝÞ3:áၠ ò)æä B3 ðÅÆƑ ®ˏ &f8ò)@@rt Ѥ`&ò)epó̤äȊ Ò«¬ < ඥ#ၠ% #<Ꮅ'! ´&ÝÝ 03;5·( ´ 709:73 '078Þ43½-:1107*8Þr0½ º8ô& # $dÞ1»83 57Þ3 91»-:1107&-:1107*8Þr0&ôÝ&$ *' ( -:11 07´ 03;5· ¦ -:1107* 8Þr0½ 89,9Þ.Þ39ý//*~495 ý:¬»8 97:.9 /0;Þ.0 ¨/0;&.~,7 ¨¨03;5&Þ393:2*0 3;5&.~,7 ¨-:11 07&Þ39 ý//-:8 ×¿Áñ ló,ႋh ¯p ᇍ qa &K ၠef d <Ꮅ±ef d׷̤pҔ & 2,9.~ " < 3, 20½½´ 3,20 &897 ý03»/7 Þ;07 -:8*Þ/& /7Þ;07 709:738973.25»/0; ¦ 89,9Þ.Þ39ý//*2,9.~»897 :.9 /0;Þ.0 ¨/0;&8 97:. 9 /0;Þ. 0*/7 Þ;07 ¨/7 Þ;07 ½ ౒Ρ,ቱ", ҅ǳǳ aᇍ Ꮅ±<ၠÙѤ:Ñ lddbus Ꮅ± ༐Ƒ`a ). ñl@ ( ̵Ö " ×¿Á= yÙ" ̵ . 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PCI ၠ, t8, ȩ_N PCI ID ãé, n, úඥ, ၠ char bus_id[BUS_ID_SIZE]; ǎ device ->parent->kobj. ^_Åó, device ->kobj->parent VhၠLM޻̤҅ ӀWƑ kobject. , Ȓ struct kobject kobj; O.ܖ BȖ Ӏ ၠ , h8% parent NULL, ၠ Äၠ <"úඥ Æ yÎ| . ,̕ ڣၠ . ÅÆ̤ 8 ܖ҅ -- ၠ "parent" ၠ struct device *parent Äª#$ struct device ±° rၠؽ Z ˬᄙ. 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GUID ID.IEEE1394 24-ȉ MODEL_ID IEEE1394 24-ȉ fּ ID. VENDOR_ID Þ000þ Ѥ1ƱúYͪð { ஧9£äpၠූɢÞ000 þ ஧9£äඥ&Õၠ&Ã 8-Þ3~495ý:¬ Ϥ"Ù<$&$Ð$% þ úඥ &Ʊlȑ d 14.7.2.1. IEEE1394( .ඥ ) Ƒ஧9£ä. {+ ҅) Y̤ͪ /sbin/hotplug Ë_B úඥÍ. h® Îh~úඥநၠ ༐Ƒ`a ) struct kset_hotplug_ops Ƒ´o . hˋÄ_ } Ø ±ͪ ᇇؿO*}NO,¤Ȓ " Ë ÆቱÏ҅)úඥ (8"×¿Á Ë ƑKh , h YͪÆÔ1Ƒzs . ҅)҅)×¿Á ÄªB úඥ Ѥ1 tYͪ҅) ஧ 9£ä̤ /sbin/hotplug Ë_Ƒ, ׷˫ฬ̤úඥၠ~ ¯ÞßƖ Ȓ̵Ö`a3öAϤ"í. SUBSYSTEM _ Âַ*} ƽַÇA.+˷yÙ҅)ַ,ޮַ×¿Á=, ¶r 64-ȉ ", ҅ùWyÙ×¿Á=tíH. hˋÄ_ h×¿Á=ַ. ַ SEQNUM ؖ, ¶࡚Ã_ Âַ, ̓oh. BY̤ͪh ؖ, sysfs 1Ƒ, ҅´]~Æî࢓ kobject. sysfs 1ͪᇇ ׹ DEVPATH òhrႋ~Æî࢓. ޖ÷° ,hÞßƖ a dd Æ remove ACTION 8-Þ3~495ý: ¬ ၠo:b஧ 9£äp _,ၠo´8%ቅ "B mÆÔû~Ë_&ÙѤ =809 ÙѤ r ӐǎB3 ̵Ö`a« =809 ~495 ý:¬*458$%3,20 "ËhÙѤ*^«o̓ܖ íÏ 8-Þ3~495ý: ¬ 3öAϤ"˫ฬh×¿Á=ÙѤ&8ÆቱÏ =4 -?0.9 =809 ò lȑWo±Ȓּ׷á . hq£ä~×¿Á Âַȩ_, o ˷ÙgǮÌ&+ǮÌ6٫஧9£ä»ðÖ`a½ 1 {E ˫ǎÙgؽ˷< ̤W oѤ 1Ʊၠ oef=ÙѤΡ3öAϤ" Ë_ ×¿Á Âַ~_ =4-?0.9 ~Æî࢓8̵Öe̤&8-Þ3~495 ý:¬ ~Ë_ôȑ< ^༐*Âַ CƑܼ̤&+ ~495ý: ¬»Ñ½Ø˸Ƒ Fª˫ǎ 8-Þ3~495ý:¬ ¤B8ȑ DȒíÏ҅)ÄªB஧ 9£ä&hq஧ 9£äep~˷ၠ ූ 495ý:¬ T*}rh= Zˬᄙ ÂַL Ë_҅) &~ ܖh¤B& ސ 0áÞ9 430/ MSC ABS RE L KEY EV ˣúඥȉූ.¿ܖᇗˣѤ1ÏhၠၠU . ҅¼oிo, Ȼ'ၠ PHYS ᇗˣၠÙѤ, 8ၠÏo. NAME ð{஧9£ä*}ºந , 8%ၠPQ҅: ªɢÞßƖ, _ 16 @Î{ºɢࣣ ̵ Ï 0. ҅ãé bustype:vender:product:version. PRODUCT äp ᇗˣѤ1ƱúYͪðÖ஧9£ ஧9£ä~ၠ ූɢÞ3 5:98-Þ3~495ý:¬ Ϥ"< $&$Ð$% ×¿Á= ׷ၠÔ˷ Hý Ꮅ±, ´oÙѤ ҅NOùၠᎵ±~ ¯¢,PQ҅&LM҅Oࢨၠ`a:$qÑ /0; 18҅ၠ၏Ƒ ؿO /0; õ౧U ܖᇗºÏ_ &҅*}@A~ၠ6٫ ܖÄª˷ ၒ̤8%l¯࡙ؽ -: ¬ qô íᄭ3ݖ+Ãǎ:&ۈۈ/0;18Ҕந_ Ҕந&Yቅ ֽ ඥe ̵ eȩ_hyOύ¶ˋÄ_ ±²౧U /0; õᎵ±˷Ƒ 14.7.3.2. udev å 24/574-0 Âַn.nM ×¿Á¤B*}~ rý 2,5 & 6٫¹BNO*%Ý'd * &Ý ƑT &ந 24/574-0 Âַ} ޻Ô ၠ O~ zs Ꮅ±Î ˫~ 8%҅)OæäKh &҅)*}׷Ꮅ±~zs< ȑ hq ¤BBͪ ᇇlDȒG3 W,ቱ 14.9.1. Kobjects => ø¢ú$Äª"B3Ƒep ~¾¿«´h҅) 'Å 56Ϥ84 ҅)r»klW LM YÐÚÛ. q #$ *}Bȑ . ô8ȑ , ࣣ Ä*< ÜÝ< U ࡀ ðÄ*҅) , 8%ҘV ࢨ; S n: ၠ ࣣ ÎC Ä*B ּ׷ . ÄªÎ C & 5Y , ˋÄò)eºª hU ²³3ñl.µ" ÂѤ1ˋÄၠ౒³DȒ"RѤ ȩ_ request_firmware ޻ÚˋÄȖfȖᎵ±ၠ . ׷࡙ /̤×¿Á°Î, ͪᇇ sysfs ӐX /sys/class/firmware/timeout ӐX¢£ . Î!²ÏᎵ±. ᄇ n sysfs n . int sysfs_create_file(struct kobject *kobj, struct attribute *attr); in t sysfs_remove_file(struct kobject *kobj, struct attribute *attr); int sysfs_create_bin_file(struct kobject *kobj, struct bin_attribute *attr); int sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); int sysfs_create_link(struct kobject *kobj, struct kobject *target, char *name); void sysfs_remove_link(struct kobject *kobj, char *name); int request_firmware(const struct firmware **fw, char *name, str uct device *device); int request_firmware_nowait(struct module *module, char *name, struct device *device, void *context, void (*cont)(const struct firmware *fw, void *context)); void release_firmware(struct firmware *fw); ӐX˷ ͪᇇ޻Ú". Yͪ޻Ṳ́Í (Æzs҅)". ˷˫ฬ̤ß a%&8ȑ %&Ƒȩ ¿ 3: %&Ƒȩ ÌD+a3: [࡚(ַòؿ ؽ Ǯ%&ȩ̕ڣ CýD ˷TþCD+lVW éùa҅?úûüùa 01÷ø%& 3: ࡚ 78Õó-.<ß xD#$ô༐Öõªö $ܾî ïðnoñò˷̤ၠ˷˷Ʊˋ#(ַG(stã -.+a-.stǎ01ß˷˷ 6éҔγɑ+aΡaG(yí$ǎßèy 01ãä(ַyåቱç˷.-ڣ-.˷àˣ+at޻Ӏ҅ˋ##$3Ê ßp(ַ^̤Cl޻ּǎÝÞȩD׷¶+a-.˷01Ù/ 3: 15.1.1. aÐÑ+Òؿ*ÓÔÕÖ×ª 78ҵGˣȩÐÑ¼½ޖ>౧˷ÎTȩ ÌD+a׷Í˷8ȑ4ȒË5Dڣ-.˷ÈÉ>Ҕந 22,5+aÊ 3: һ౧ȖCؿD+ȉ ҔநÂ*Ã CD¼½±Ȓ01˷౧ ༐¾¿ÀÁ3: ౧ ˷ Ƒ 3: º» ˷౧8ȑ4Ȓ5 [࡚78aѤ01¸¹ a3:+*(!ܾ,ܖ ¶׷ ¤® ±Ȓ ҅}²³´ၠ01˷l޻¦§+༐ॕªl޻˷ 09*:807*5,08¤ ¥ pst˷̤˷T ȩxD58ȑno TnoBᎵCሓ҅˷ ̕ڣ Ꮅ)*aO 6pstl޻ 78޻ ၠ)* 22,5vw xD +, noၠ˷yz{y|NO}~ ܖCD pG(stҔந҅ˋ#ၠ˷l޻no̤+aజ+9: 22,501g <=_ab ɢ]+^ ᄙ YZ[B ˷TTؽVW -.˷Ѥ01ƱD3:ͪKL?@ BCDႋ78FGˣI #$%&Ꮅ'()*ܾ! ˷౧ǎၠᎵȒ 3: జ 15 ˷< DMA ޖ>@˷Tþ <Îpst < j ³˷Tst+a&^Á j ³ +noƑȩ j -. 6 aè pst<˷Tt^ ȏ0è ቱූ[¤ ˷T ቅa$˷ [_҅-.Ö ȉ 01 3: xDl̤¦˷ ȉyO< j ȉ01ƑÖ௯Á ቱ˷4ᇕ<˷T-.tC Ȋ˷> .15.1.3 ސ% ؿ9 $ȉ>Gäaᆼ*$®ҋ !j±Ȓ D+a׷ }~ސ 9ȉ>Txp <tᆼ¤ 411809ȉÐNÖ`_+aTxp ! v9 s 8NȖtuɯ9YZTp rȉDɯ9YZ s ~ȉÀh༐T$8 ȉȊ g 8Nȩ ҅y_+aTp<+a T˷ɯ9 -. ß 8NȖo+a˷ ³ÁTnȑ³ +ȏ0è Q¤ +ü P,825,0*$®m W !jh༐ T g ǎd+a һ౧01׷ ̵ȩȏ0C T+a01#$˷˷÷aTËbè҈ñß˷Ö^_ _% Ρ ˍ`_T 15.1.2. < Z%&\w] 78һ Z[ ȩ R3ãYéxD78 ࣣ %&Ö +üyOCVRWࢨ %&DC8N %& ˷TLÎ)*CC ** ;,¤xD6³Ȋ˷ TÖnoG4ᇕ ȩ ßyQ Ƒ+ü¤FG ҅˫ฬß 4ᇕ ҋ**5,¤ P,825,08NȖ -.WW=ǎÀ:CLÎM§¼½¤ƱFG-. D2,5l޻ßno ¤-. xࣣ$8;2,??4. ቱ˷ #$˷T-.CD 4ᇕ 4ᇕD˷T-.xDܖ4ᇕst JඥN ++̤ßnoxD ˷T-.Cؿ˷T-.%Ǿǎ4ᇕ҅8ID˷Tst̤ßno .HUQ HOYLUWXDODGGUHVVHV ˷T4ᇕ D2, ??4. FG ˷ ;4/ B %& CƑ=ǎ:3830/ ?43 4ᇕ WWß˷ܖ>ȉ01è ÞÀ:YZ [࡚yOCO; Ý4ᇕȩ ȏ0è4ᇕ <҅8˫ß67+aW ɯ9˷> ؗ ,noƱ#2¤ÂYZWWÖ׷Ȓ҅8Dß,ඪñ࡙W˷Tst .HUQHOORJLFDODGGUHVVHV ¸ඥD~ ÃNȻ׷¶ & '(D+aؿ-´࡛Ꮦ ±Ȓ,® ౒Ρ$8ȩ%& ˷Ƒ'̒ၠ>D )* $8¤xD׷ၠ +ڣ$"ȩÊy & +a ®&¤҅¸ ඥ<Â˷tno ȏ0y}²+a® ˷౧Ρˍ® ,+̕ ڣ* xDCDؿ ßóW҅8<Ö÷ ȩ´ၠ<˷ tȩ %XVDGGUHVVHV Ißyȩ̕ ڣ,ȉ01 ȉ 6 ßD÷<01˷tȩ 3K\VLFDODGGUHVVHV ҅?ú-.stYZùaG( ȉȻֽӀÝÞÐÑpÍ èD ȉp(ַ^̤WDÖ 8VHUYLUWXDODGGUHVVHV *( CIͪKL. V+ï˷( NUMA )01<ቅ,̕ڣ , ,01 `_ mem_map. xD, +aΡaÎ ඪ ,01, ß˷ .ܖ˷Tìݖ +a $a struct page îÎ ඪ>ÊË 01 Ƒ ×˫.struct page Ƒ, xD҅D˷౧I èéᐈ" +YZ<Ꮅ'ë $ æ٫ âT .PG_reserved, ҅äࡘ ˷౧01ȩ âT ˷ ƑÕÖ ͪ ã, å: +¼½ TÞß + ȉàá . , ïð PG_locked, ҅À unsigned long flags; page_address ҋ, Ì¼½.ò, ࡙é "Dȩ ȏ0èÁந; ҅~W6T˷T-.×"ØÙ၏Û,Ö'Ü. 8NȖÝoañ ܖñòCD T˷T-. , 8N҅Öno ; ÕÖ, NULL. Ȋ˷ T+lÖno ; ~˷ TWWCD. a void *virtual; . Î. ׷a count Ó̤ 0, TÖFG ³sÔaTà atomic_t count; b aÐÑ+,ñòïð+a897: .95,001 Ƒù+aß T p-.stI˷T<< ސNOþÒסخ ÝÞè ҅å T Ì+a Hͪ ÍÎ¤yåvw+a ªj jª Ï˷ ڣÊܖ ˷> ÊË ˷T)*ሓ ˫ǎßÐÑ6Dޖ aÎQ Ƒ+ü¤22 À:>þÉP?3: 897: .95,0À[࡚ ÷˷˷T LÎI$ȩ 4ᇕ ~˷Cy aYÇÈ ~˷vw HͪxD ÕÅÆ a"+ß˷T4ᇕ>àÃÄè˷TÕȩ < struct page 15.1.4. ˷ , Â78 º̤҅8,.~˷78¹ÀÁȩ pst t^ 32 -ȉst ,.׷҅˷T<Á, ҅D, ˷T? ၠූ+a nȑ˫ฬ, YZ҅ȉ ූCDÝ Þ+.ࣣ À 640 KByÖ¾C . a<ύ» PC Ƒ i386 01è, Ȋ<~˷tWWၠ ූ½½ 1 GB , һ౧ቅa˷Tቱූ, 4ᇕC˷ , [_҅_˷T-.ၠ ූ»¼ ´. High memory IDȊ˷ .˷ܖ ,4ᇕ˷TstƑ˷ . ùa01ȖyO¥ º̤ Low memory 78¹+ ü,! ²b [࡚ _]¸^ûü,³yOD ´µ Ã¶[_҅ ! ·[!²ª~˷ ª pG( TÖ\±_ ȒÐÑؿ°Ȋ˷ 6~˷ޖ[࡚ #$˷TÎé-.no>ȩaƱ˷Tsty +aÃ +~ T̵˷Tؿ +aY4ᇕ 6s ~˷ ¤ࣣÞ<˷Tቱූ¤ Ýޖ¯ R˷¦Ȋ è̤ j® 4ᇕnoxD$˷yÖl޻ ȉ ÷ ƱO< $ǎ j ß˷ γɑ ̕ڣ$#ÐN «ӍªÃN̤8z _Ƒ <01ˮ§N÷¨¡ Õó Hͪªȉ ּ _ּI$˷ ¡¢£BC¤ 01yå4Ȓ¦$ M ǎ j ß˷ 3: ÐN Ëǎ˷Tþ? )*st [࡚$֨>OÖ˷T÷¦ß˷DO no̤-.˷TÎ ö ú-.³ nȑ҅ؿl޻޻˷?҅*(ސ ˷T no̤˷Tstࣣ ˷TCOl޻±ȒDß˷-.no ÐÑؿ*ast xD˷Tst¦ ¤!?? #0 ,7.4 08,94;09<D,30 ? !˷ §Ȓ0730 ? >5 ҈ %Q03: + &3/0789,3/3yO ÝÐND78C¼½҅8nȑô༐ 63 )* Tl޻ȩ ˷TÕóö Ónȑ ýãDǎᎵȒ ၠᎵ ~Wyå#$±ȒO9:±Ȓ T ȏ0èRTl޻ȩγɑ ࣣTìݖ+T ˷ 3: ßno<øa˫ ฬàá ̤ 6҅èD+a$ &ÐÑÎ ඪïû-.+aT aÖ`_ßּ̤҅.-ސ+a >ᆼnȑநþ01è ÷ؿ 15.1.5. ,§Ì<§*༐ Ƒ׷78Gˣ$Ѥþ , , 78̤, LÎ+,ȩ >CDa ÇÈ. ). Ҕè, ύѤ kmap Ã+ CPU YZ ǒ֦ܴ ( һ౧ùa +a Ǯ yå ࡘ 2 aLÎ¾¿ȩ a, . ®*Ù˷T Ƒࣣ +KM_IRQ0 < KM_IRQ1(ǎ Ƒ÷). ÙύѤ kmaps ؿÖύѤ÷ ; Ȗþ COw ãäþ ), å:pstg D KM_USER0 < KM_USER1 ( ǎl޻>? + Ùü ƑZa. Ꮅ ,ؿ type ϤÎƑ 01ȩî ); +a kmap_atomic g T ( È ùa ȏ0I³ύѤ kmaps ìݖ + .؀ kmap_atomic D kmap +~NO void kunmap_atomic(void *addr, enum km_type type); void *kmap_atomic(struct page *page, enum km_type type); #include #include ,.noyyO ׷ࣣ Ù kmap*® .}ڣ kmap, ࡙éÊ+aTèg+a၏Î, [࡚8N 2 a $aLÎI ìݖ , [࡚¦3C*҅8è ɶ±Í,t. kmap gÎRnoy kunmap >°;+a kmap ý noּ׷+lȩƑý+aÃ þno . ȩ, kmap ˷Tst+aÈ kmap _01 ƑnȑTFG +a˷T-. . ǎ Ȋ˷ T, ҅6FGT 4ᇕ ; ǎ~˷ void kunmap(struct page *page); void *kmap(struct page *page); #include page_address. kmap + a ü B C D Ȗ Ý ȩ , ̕ ڣ . a L Î Ƒ + ü . ܝ FG a T˷T-., 8NR+a. ǎ~˷ , ቅa ǳ׷a TÕÖno void *page_address(struct page *pa ge); rN. o+aTxp pfn_valid >ù_³+TxpFG struct page À:. 8N)*, ҅ ÷ø³ pfn_to_page ̵ ȩ struct page *pfn_to_page(int pfn); ~˷.>? vmalloc ˷)*+a 4ᇕ , ҅Cȩ +a˷T4ᇕYFG ҅Ö˫ ฬ struct page À:. [_҅aҋ, +ü , ö struct page *virt_to_page(void *kaddr); :ސ,LÎ<ҋÖ+ü> struct page À:<-. tᆼ ݫؽ҅8>?Z[. struct page À:WWDVW §Ù, BC. ýãD, 6Dȩ Û Dy9ñþnȑyO,òּ׷ርˑ l޻Î ඪܣ$ǎ+a˷noÎඪ, [࡚ß˷yO ùähࢍDb ;8!8.,?? b 5 11111111110 1111111111 89,.D b 571-1110 7 6 71. 71-1110 84 ?-?/ 7g b 5 7 6 84 ?-?/ 7g b 5 7 84 ?-?/ 7g b 5 7 -88 b 5 7 6 gg -3.,9/,9, b 5 7 6 9 gg -3.,990 b 5 7 97220/¤ 478Q 64?1 .,9574.80 ?12,584444 ;8!8.,??5,0 8 4 /,9,$$ 147?-. $9, .D802039 9 ?-9?8?-. 8 490 84 ?-9?8?-.$$ 147?/ 84 /,9, 9 ?-?/ 8 490 2,550 / $$ ?-?/ 98 -339/,9,9074 8-33990 b 5 11111 11110 b 5 7 6 . -1111 b 5 7 6 g b 0 5 7 6 0 g b 5 7 0 b 5 7 6 7 g7 b 5 7 6 g7 b 5 7 b 5 7 6 1 b 5 7 6 1 0 b 5 7 0 4 .,9574. 2,58 ?44D ,939 o78 2ͪ౒3¤ Ȓ_+a $Ѥ[Døa˷nWWÀ׷ ̵G(҅_]̕ڣD+a574. / Ã þ 1?80.574 ¤ ސ+aG(®>É+aG(˷"y̤~574.P5/2,58[5 /׷¶ • ³ùaਢ1˷no+a"$ å:(ַ./@< ¤$ ޖa YéÖቱɢ *äº» ¤-+»,Î+҅ޖa "ïð +»,Î$ޖ• ³Î 9¤+a " • ³(ַy*äþ WW `_90 "ඪñb +aG(˷noႋª ҅?úÃN˷҅&%ּǎ+aªࢍª() һ౧yåI3¼½_ ª+a )*-. »¼ st ¤vwސǞႋ8 +a Þ #y àá <Ö"$b+a(-.˷+a +aGþ +a 'ÐÑޖ౧+aG(stÃ"$ ˷TÎ< ¤'" ˷.- ˷ .15.1.6 . >=҅? æ٫ñòᎵyå void *vm_private_data; struct file.Õó2SƑȩ ˷ "D+a˷T "ႋ ", ႋ78 >a˷ "è±Ȓ . ҅À+L Î, ˷TyO¥g struct vm_operations_struct *vm_ops; ූ. Áa VMA; ּ҅׷ၠno Ƒၠސᆼ=Ƒ . VM_RESERVED ˷౧01C*¾¿ Ǟ VM_IO àá +a VMA Ȓ_˷no I/O ". Ì , VM_IO àáࡘa"ÖïûG(T ¦ Qˬ ᄙ àá D VM_IO < VM_RESERVUED.¼½a "+ àá . ၠᎵ' ë unsigned long vm_flags; ÞƑ"ɯ9, åT၏. ׷+aÞ<ၠÖno, Dnoa "జ+ TÞȉූ. unsigned long vm_pgoff; +a)˫ฬ struct file ÐÑÀ:.<a"(8N+aÀ struct file *vm_file; Öa VMA ×ª-.»¼ . ,ñòD /proc/*/maps ƑÁந 2 ahࢍ. unsigned long vm_end; unsigned long vm_start; Â*ñòDÌ Ù,ñò<78½̤574. ᇗÁtǾ¤'Ñ¤ +aᎵ nÙýÕÖaÐCD[࡚'> ìݖ a ඪO;2*,70,*897:.9 øañòÖ <>M," oܼYZ LÙ˷T ìݖ 'ၠᎵ҅8 22,5ҔநƑȩ ,ñòּ׷ÖQ Ƒ+ü¤22 J78 ˹897: .9 ;2*,70,*897: .9Ƒ¦*ñò P?3: ¦5 'ּ׷ [࡚ _vw 22,5ּᎵ' ë+», +avw22,5 Ꮅ YZ [࡚Ҕந 22,5"¤)*> պI ቅaG(>҈ñቅa 'o>Gּ ቅ anþ22,5>noၠ˷̤҅st01 ~+a F 'pstG(g׷+a 15.1.6.1. vm_area_struct ÕÖnoÞ:(( WW+ay*änႋƑ). image ÖnoÞ inode p. inode ၠÃþÞDE", CDၠ? . ºܣ pÖÕÖno ÞၠÂ A'p. ÙBC , ǎၠno , ÂA'pÀDww major minor ˷"҅Öno̤ ÞƑ¸»ȉ ූ. 0 ɯ9Ù/˷ "º»ּÞº». offset " p *D³"˩@ " s.§+ah=*D³"> ,ë<*ä#yȉõ. añò¼½G(yåӐǎa"TǮ. ñò¦˷"Ì perm a˷ "º»<Ð ;-. . start end ùa574.B2,58Á>nႋ :Ѥ¤ּ897: .9;2*,70,*897: .9Ƒ+añò b PLQRULQRGHLPDJHVWDUW HQGSHUPRIIVHWPDMRU .,957 4.72 ,58 "Yé$ѤyYo³ d e3 /46801fͫ-.˷"+aѤg>^̤b+a 22,5 ˷l޻ p(ַၠǎᎵ˷noyÖҔந>}²ᄙÃN+01¦ ˷noDநþ &3 Ȓ 22,5 ၠ ef˷ghij̤!$$! kl [\]^!$$! ࢍ`Aabcd ! !>@$$! DѤ4FGHIJKLMȒNOPQR ! ST4 UVNWXYZU )׷>?ǎ!.! ˷AB ! 34 ! 5༐789:;< .! ˷ )ȩ+̤! ȉ ! ! "࡚҅%Ȓࣣ˷ ȏ >@ Ҕந , 78நyåc*22,5 01gÐÑ¸ȏޖ˷౧Î ¸Ð783: ඥ(Ҕநå 4Ȓ$8 Ù˷˫ ฬÐÑyG(t˩@ 63:22 .:77039Dȩ W"~ ̕ڣ҅*(aÐÑÀ:nͫÐÑƑ6Ꮅ5,0*9,-?0*?4.D¤ <_˷౧౧ æ٫ïð+a `à22,5*802¤<+a?aãT -.˷ " G(Q ¤҅û8 .Q0/ +a 897:.922*8 97:.9+ü P?3:(^øa˷Tst պI ඥ(¤ ùa01ƑGÐÑ+ ¸ޖÎܖ˷౧ ]È¦§DG(˷noÐÑ҅\w 15.1.7. ˷ [ˏ". ؿ*>Ҕநapst ̵ . ǎᎵ~Wࣣa "ˋ#˷T"ZV"T̤˷ , ҅8Ö pgoff, int nonblock); int (*populate)(struct v m_area_struct *vm, unsigned long address, unsigned long len, pgprot_t prot, unsigned long _a"+ü, +as TY˷Tቱ .nopage "ࣣ ҅§. 8NÖ+ü)³˫". a"FG struct page À:³ßT, Ʊ#జ 2 =Ƒ (8N҅r VMA T, xD҅׷̵C˷Ƒ, nopage "Ög+a׷+aG(¾¿ȩ struct page *(*nopage)(struct vm_area_struct *vma, unsigned long address, int *type); º<˫X+A.ܣ)aG ҅ù ၏Î˫ ฬ̤ VMA; a "6Öȩȩ҅˫ X±Ȓ . Ùࣣ׷+a "ÖV࢓ , ˷Tg void (*close)(struct vm_area_struct *vma); > Éþ.Ꮅ mmap "Ög , ̕ڣa a VMA( ׷{ñ+a FG(, $8). +a $´D׷a VMA జ+ AÖ mmap ý, ;aFà + nȑ,ò>ˋ#Ҕந VMA Ѥ01> +»,a ". a "Ögopen "Ö˷Tg void (*open)(struct vm_area_struct *vma); ந §Ì+,, LÎÖҔÁ ,±ȒD +)*>÷G(˷)* ҅8åÖTYUַ Á±Ȓ Q6҅ïðÌ22 ႋ897: .9;2*,70,*897:.9;2*4507,9438*897:.9 +üǎ P?3: Cႋ ύ&ǎ01gҔ "̵YZ [࡚ "ύ&VWCGä4Ȓg 22,5 ˷T ,Öà22,5"D 1?0*4507,943ÐÑ+ ׷Á22,501g 4. 9? >҈ñ҅4Ȓ(ַyO Үl޻>þ ÉÁ KgYZ+a~NOּ !®´ၠno҅8Ү̤+a˷&$ѤD+a+a !®ၠ(ַ d+a+a ?800 D6790ҔநÁ8 pst}~̤ ؀ ¿hi ˷ 6ßno> ̤ޖ $8 78Õó̤ d fͫ҅÷~Î׷Mͽ׷Ryä,ò 22,5ȩ ͨ">Yno+aΛၖ ̤d+aYZࣣ ȉ ~ ȉ < ȉ˷ ® $y6 ȉ < o®$ ̤ ?5Q yO6{ COGäl޻n 22,5Ȗ¯×" ȩ ̕ڣl޻no ȉ ȉ ȉîgࣣ $8+, ?5Q, ၏Û ¹®$˷Ȓ+a %֧},[_҅8®$ ÝÞh¿yOC)* V ׷®$ၠÖ +aIȒ(ַòC¥ z ǎ)*ሓ8TᖔRô༐ [_(ַؿ ሓၠ8ȑ4 [_ၠ(ַDၠ Ȼ ᎵCD , Îx8N҅ CD T $" , خ890ೂ~+aM ˷T y Îxº»ß *$®mÎxYZؿ ȉǎD !j *$®mÖno"ؿD !j +6[࡚ ˷Tyå౧-.6T *$®mDno ೂD !j 22,5d+aऋၠ ÌÙü $8Ɩ8ȖyO qr CDùaၠIÁs?ú³22,5ݣႋ6 R ࣣ Cl޻RNO˫Qּ ǎ+aႋ 22,5 ˋ#op<§Ù hiΧ˷ d fͫ$ Ѥ[ȩ èDၠ ë҅Ҕ ×ȑ ,(ַ³+»¼˷pst̤ၠ˷no+aၠÙ/˫ ฬ+, b b 1111b 1.. 1.. 1..11111b!® :84 1.7 b b 01111111b 0 17011111b!® :84 /71 11111b$!8902# 1 /111b/,5907# / ..111b'/04 # . ,70,-1111b'/04 # , ,"Ʊy 574.4202Ƒ^̤ b D+a ቱè hi ˷l޻no è# a01Ƒ¦~ ˹ؒ 78^̤no 0® $Ѩ[àmȉූ ҅Dhi˷ జ+ano ,hiΧ˷ ֕no҅³Á+,˫ǎ d fͫ 8ȑȩaC 78éҔ^̤ xD/0;22ÍxD࡚÷C Qˬᄙ ҈d fͫ ' /0;202 b 80 7 6 ,g/, ,g, /0;202 b 81.. 7 6 ,g, ,g g7:87d#-3 d47 b -1 5 7 6 17 -1 g7:87d#-3 d47 b 5 7 . /0;202 b 1 8 7 1 /0;202 b , 8 6 7 . , , I/O ˷ ,. Ҕè phys_addr ÀB io_remap_page_range ּ׷ , ̕ڣ Ҕ 01 RAM pfn À 2 aLÎ, xD . జ+a (remap_pfn_range) Ù¿ ,. ȖyO3 _Ǯmmap "Ög ³ remap_fpn_range ϤÎD׷l޻ , YZ҅8DÕó VMA Ƒ}²³Ȗ , ׷Ȗ vma ->vm_page_prot Ƒܼ̤ɢ.³F VMA *ࢨ"protection". Ꮅy(YZּ׷)ȩ prot ࡙Ö Fno ", åh༐. size (pfn<noß4ȒY702,5*513*7,30<4*702,5*5,0*7,30>÷ ҅8 15.2.1. ȩ remap_pfn_range ·ƑҔந)*KLN [78Hͪ+aҔ78ª+A2ª"º» ҅I ౒Ρ ҅M<ùa"" +A+T~345,0' 702,5*5 13*7,30 +A҈ñ2 "bgaT 458 *2; ,2; ސF±Ȓ gÉ)* ³a »¼ YZ8N࡚ 4ȒÖ˷T ҈ñ6_Ҕந22,5Ꮅ 6*T]٫ >ၠ-.»¼æ"Ƒ 1?5ϤÎႋజ ቅR B ;2,ïû˫ǎ 39B22,5¤897:.91?0B1?5897:.9;2*,70,*897:.9B;2,¤6 d+Ì Þ±ȒTY8b 22,5.,//7*9, //7 890*9?033957 4939 1?,839 1/ 411*9411 809¤ 8+RÖTY822,5 ¤@˸TƑ¼½¤601g , "̵$ ˷TC¥gg ??54> ?4.9 %¤6*$ ®;2*5411 PP !j ;2, ;2*89,79 3ª;2, 5Q!8? 4503;79 ? ª$25 ?0' %®*#5739D ;4/825?0*;2,*4503897:.9;2*,70,*897:.9B;2,¤ 5739D ±Ȓ bg; 2*458ȩ ̤࡚ 78 ;2, ,, "8ȑÖ}² YZ^̤׷҅8Ög 78> xD҅éҔˋ#CDÃ ¶ ΰ+a æ٫̤01 á>~É҅8ÕÖgܣ҅ "< .?480 78Õ ý 4503ၣY+a ౒ΡᎵ $8825?0 C)*nȑ-´Ãþ÷ ܖ҅8 Ȓ_+a ">nȑ҅8yO*ࢨͪ÷ ҅8ǎᎵͪè˷TGä÷ [࡚҅8C)* FҔநnȑቅ[҈ñ4Ȓ "Ög.?480 ' 4503 < Fà nȑ,ò +aG(z{< ý +a '6Ã¶4503"Ög˫X ' ºܣ) ×ȑ ,+aG ,±ȒÖg}² 4503 < .?480±ȒÃ¶78_ '²,±Ȓ ந78å+a ౒Ρ }̤ '9ÐÑïû+±Ȓyå. :897*,70,*2;^ܖ878 )Ȓ 15.2.3. 'ͪ VMA 702,5*513*7,0>ý ؿ*TFno˷6CDg ^ܖ8Ȗ < 6 709:73 825?0*;2,*4503;2,¤6 ; 2*458 825?0*702,5*;2*4586 ;2, 6j® 709:73 ; 2*5,0*5749¤¤ ;2, ;2*89,79 ;2, ; 2*03 / ;2, ; 2*5411 ;2*89,79;2 1702,5*513*7,30;2,;2, 89,9.39825 ?0*702,5*22,5897:.91?0B1?5897:.9;2*,70,*897:.9 B;2,¤ ƑGä 39Q:8,82¤&Ï,553!,0869Q99 ?08ȑ+a`_825 ?0 $25?0®25 ?02039,943 anͫ . Ƒ]> YZþ /7;078.Q,7202 Ȗa4Ȓ࡙)*ܖD pst702,5*513*7,30øƦ8NȖᎵ)*+a౒ΡඥNၠ˷no ̤+a Ҕந15.2.2. !"౒Ρ [CG+࡛aÂÈ. Ý>? drivers/char/mem.c pgprot_noncached LÎ>ܼ̤ïûǮ. 78Ȼ. 3 éၠූ, xD҅ƱyO~\ݖhࢍ˫XÃ+ VMA '. CýD, a¶è˫X'D~ ÷ ၠ˷Cּ׷Ö÷' . WW01 BIOS ࡙d+KLNC]C÷': WW, à Cȏ .̕ڣ remap_pfn_range ȖÃþ_'ëy9ñ Ꮅ, xD , Ȗּ׷ȩ ̤ remap_pfn_range .Öȩ̕ڣaLÎùa ȏ0èD+ï, ^ SPARC, YZȖ 2 09*5,0897:.95,0B5,0597¤6 ၏Î09*5,0ҋFGTȩaLÎؿƱªøH҅~g897:.95,0À: p)* T345,0 LÎؿ+ȉY FG ̤Tº»© ϤÎïû ¨ïÁV-. Ƒ+a T˫345,0LÎÖgpG(¾¿+aC˷Ƒ '׷+a 897:.95,0BB345,0¤897:.9 ;2*,70,*897: .9B; 2,:3830/ ?43,//708839B9!50¤6 ύ&b 345,0 "ၘȋ ၠ +a ౒Ρ3 45,0 Ҕந³825?0 [78 Ӎ ؿҔந[࡚8NȖÝvw2702,501g 3 45,0"ؿ* GäÃþ~ ந[࡚ ࣣؿ_FT, Ꮅ¦ ¥~345,0g Ö« ׷noÁ8Na ' Ö¢˷Ty ££ ¤ÁC)* TBCؿ Ꮅ 8Na ' Ö2702,5 ¾C,˷TCl޻ ~Ꮅ׷+aÖno ' } ܖ8҅ ¡+ >¾C+aÖno "(ַà ¸҅ÖּyY2702,501g̕ڣ"+ 345,0 "ҔநyÖg 345,0'aȩ+̕ڣR ਖ਼1NDؿ* I,һ౧702,5*513*7,30#$³4Ȓ]CV8NCD³Ꮅ22,5 Ҕந 15.2.4. ȩ nopage ˷ ҅8N78*҅ãä 78ؿ Y ég[_ 4503"C +»,22,5,gÙ825 ?0*;2,*4503 Yég 825?0* ;2,* 4503;2,¤6 ;2*458 825 ?0*702,5*;2*4586 ;2, äb 8NȖG825 ?0*702,5*22,5$ѤȖ^̤,þWW22,5"Ƒ҈ñ ;2*458ñòƑ 825?0*702,5*:2*458À:˫ 'ؿ* =+aÀ_ȩ,±Ȓ_+aÃ +noਢ1 <6 .?480825?0*;2,*.?4 80 4503 825?0*;2,*4503 89,9.897: .9;2*4507,9 438*897:.9825?0*702,5*;2*458 < 3ª¤6.?480 ª$25?0' %®*#5739D 9B; 2,¤.:897*,70,*2;9.:80897 4?.*,2;*0?4/825; > D၏Û)*ß YZ~v9҅ [࡚ ÊÞ Wࢨ ַ ၏ÎYZ øH ҅à [_˹+A[78 ౒ΡnoÂ˷3 45,0LÎ6)*ܼ̤࡙é 897: .95,0³ÁV < 709:735,05976 #6®&%**B9!50 ' 19!50¤ 09*5,05,0597¤6 5,0597513*94*5,05,017,20¤6 *$®j&$6 !j709:73 1°513*;,?/5,017,20¤¤ %6*$ ®:3830/ ?435,0 17,205Q!8,// 7 !j ; 2*89,79¯ 4118096 ;2, :3830/ ?435Q!8,//7 ,//7088 %6*$®; 2*5 411 PP !j :3830/ ?43 411809 ;2, 897:.95,0B5,05976 897:.95,0B825?0*;2,*345,0897:.9 ;2*,70,*897:.9 B;2,:3830/ ?4 3, // 708839B9!50¤ 78345,0">8b 897: .95,0À :³)*Fno ࡛Ꮦ D౒Ρb78 6)*+ȉY FG+aÀ® [_78[6Ҕந+a̤ß˷Gä+AFno+TYZ FG҅897: .95,0 ÐÑ 345,0 "޻458À:*2;¤ &ސ78?ú±Ȓ> ÉDڣ22,5ؿÂ*Ê < 6 709:73 825?0*;2,*4503;2,¤6 ; 2*458 825?0*3 45,0* ;2*4586 ;2, 6#'$*#; 2*1? ,8 ¬ ' ;2, *® 6; 2*1? ,8 ¬ ' ;2, ¤¤1 *1?,8 *$ 1411 809 **5, QQ*20247!¤¬¬ 1?5 %6*$®; 2*5 411 PP !j :3830/ ?43 411809 ;2, 89,9.39825 ?0*3 45,0*22,5897: .91?0 B1?5897: .9;2*,70,*897:.9B;2,¤ 4Ȓ> 678 ü>ႋR b 22,5WW345,0 ׷g8NȖȩ #®&%**ၠᎵ Ƒ%&࡙éɢ ¹¸D ' & xD 6׷ቅaϤÎC_ ȉූ345,0 "Ʊּ׷ =V%& Y9!50ϤÎÀ ȏNÖ¤ 01 ၏Î «ñ_Ꮅ 2ͪ+a T̤",CøH၏Îȩ 8NȖ၏Î³"ƑùaT Ööno ˷Tøȩ׷+a ' TሓaTyÖ °ූ s Ô ˷ ˷T_ùa Tìݖa၏Î6׷၏Î̤၏Î࡙é࡛D)*> \wÖnoTà+ :3830/ ?43,//708839B9!50¤6 897:.95,0B825?0*345,0897:.9 ;2*,70,*897: .9B;2, R+a"yO>8࡚b ÁVG( ¦౒Ρ">ࡘno«Ӎ DҔந+a౒Ρ 345,0"҅+l¨ï+a¸ඥæp Ö~³ ַòÃr ҅{ xDCyO( ڣȖyOÝࡘä_ 6no Y̤Ȗ "Ð ҼCD+aYÊ'ë Ȓ_+aᎵCO+ü+a 345,0209Q4/҅C¥]̤a«Ӎ ~YZ-´ "no̤¹T 8NȖᎵ2702,5>«Ӎ ҅noyO ᄇßၠ "Ð Ҽpsty+lȩÙ ࢨ6aLÎÀÁnoᄇÁˋ#˷»¼ aþ Ƒ 5890 DÕÀ+ɯ9 §sß® YZ ;890D-.˷ W˷y ^၏Ûɯ9 aþ àˣ+aùo>ݗ+a V׷(ַ¾¿no ᄇàၠ® " ;2*5,0*5749¤6 702,5*5 13*7,30;2,;2,*;2*89,795Q!8.,? ;890 ;2, '6B85,38944 QQ B® 709:73 1;8 9058 90¤ 411 6 :3830 / ?4 35890825?0*7043*8 90 ; 2*89,796 ;2, ;2*03/ :3830 / ?4 3;890 ;2, :3830 / ?4 35 Q!8 .,? 825?0*7043*89,79¯ 4116 % 6*$®;2*5 411 PP !j :3830 / ?4 3411 ;2, 825?0*70 43*890 h༐ "$ß825 ?0*70 43*89,79ּ׷DTᖔ¤º»b Ì_+aᎵaܾî>no+aɯ9a˷»¼ѤgᎵ6)*ȩa pst 6+ _no̤̤҅´ၠၠ»¼ CD2˷ᎵxDÝ6 noּ & pstѤD/0;202FҔந 6҅8Fnoß̤$ ^ܖ¾ 78ܖ 15.2.5. +,-. 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Ҕª<ª09*1700*5,0< జãä,Ï6yãä ,ቱ҅8'̒ 01 , '̒yÖቱ һ౧ xD+ay9ñᎵCO ȻaͩO -. +,ȏ0ÐÑ®yå ! ®¸ඥèȩ-.ª$ :8ª+༐¤҅´ၠ¸ඥèȩ $:8^CᄙDaÙßIȩ 8҅ޖ ! ®01¸ ඥ÷ ᇗÎ®$ ß˷)*T[_ၠȩޖ '̒Ì>Â* ÇÈD׷҅8ǎ+T҅8ؿΦÂ a3ÂÙ D+ ˷ § xD>5 [Ӎ'ֽ̒Ӏቱ678 M§ +a~޻ ༐ॕª 15.4.2. 8ቱ DMA :̒ Dª´]+a̵ቱ '̒ª Ƒቱ+Ù ̵ ҅8l̤˫XÙ#$Ꮅቱ҅8'̒ +»,,YZȩ̒ ' *ࢨၠᎵ>ቱ+a$aÃ þ'̒ [d+a˫îD @ > Ꮅ ® }²NO ÷÷ᄇI §Ù ÷Ùü[_+a ᆾþᎵyO+aᆾþᎵ ҅CyO ȩ¶yOҔந ÷ ȻƑݗrƑ÷࡛ᏖI yg̕ڣ,ܖ ̒'޻÷øළç̤˷TYZ ஧Ƒ°ූ +aF Ꮅ'̒ YZÁ+aƑ'̒ ¤6ùa̤>ݗÖ°ූ ஧Ƒ+ay WÖ`_+a W̒'؀,ΧWW qr ^̤+a˷ Ƒ<÷ ˩@ ஧ å࡛"CȏWW ළΧ Ƒ^̤ ኞnȑ˫G(YZ ª Lͫ ޖ ईFÎ• ÷ YZà d+aƑ׷҈ñ, ̒' ̤ޖၠ ëÎ´ • ޖƑ÷ቱ+a '̒ YZÝÞZ[÷ ᇗÎ • Õó̤ᇰޖÝÞà+a Ƒ>ҙFÎ • bC % ÷ᇗïû࡛Ꮦpst³ ޖ೧Îܖ OFGgᎵּ׷ ìݖ +a '̒åǎ§*̕ڣaޖƱw*ˣÎ ҅8,ò³ၠ ࣣ҅´ ޖ$8 {Î Öå࡛ȩ D׷<̤̕ڣ జ ޖÎéၒƑYZ ኞ G( ҅நyå ޖƑ÷ ´]ᇗˣÎ • '̒YZ҅҈ñ,à+aƑ a̤ޖÝÞ ëÎ • aG(Öූ_ ቅa'̒ ̤ޖ'̒Yà ¨ÝÞ> ÷ᇗ҅Î70,/ Ꮅ "ቱ+a׷+aG(g • Ӏ [࡚78ந ᆼ9̤aÂ È ~࡙é "Dȩސaᆼ Á0'̒ؿ ȩ® ˷౧ΡˍؿÖ'( C4Ȓ +a̕ڣ҅8#$T4ᇕ<¸ඥt˷ސ,LÎGä+a ౒Ρᆼ ;4/ B-:8*9 4*;79:3830/ ?43,//7088¤6 :3830 / ?4 3;79*94*-:8;4?,9?0;4/ B,//7088¤6 ˷Tþ,01è࡙W4Ȓ6xD ȖyOº̤҅8׷ȩ VW౒Ρ ® ȏ0CÖཔ [_҅86,LÎȩQ +üL Î P,824 Á ˷T}²+ay9ñ"~ᇗ ¦ Ȋ¶˹A 78 ¹Ꮀèo+a~5̓"¤3: ¸ඥ +aTno ȩnÙ T)*Áந´ၠ+,01 ß ޻҅no® ̤C ¸ඥÖ~,޻-.),޻ !®¸ඥ ! è҈2 Dß ùa֧}δC¸D һ౧®$ < ¸ ඥBCDß ÝÞȩ Ëǎ KL,خaM ̕ڣÊҔè -. ßB(ַþȩ¸ඥÝÞ~ၗ¸ඥȩၠᎵؿ <)޻̤޻ +aȩ 15.4.3. <ඥ pst , ҅yOD¦35 ̓"׷)*+a࡙'̒,l޻® ̤ ׷Gä%ìí® Ʊyå %ìí® ȖyåቱȖ'̒ åI )ࢍYZ Jၠ 8NȖၠyå'̤̒RÍ xD ɢ] Ý+Éþ" 8NȖቱ+a "£YZ҅˾ãȋ01 '( 6¦3D ርˑ^VéҔࣣѤ01 a"xDéҔó˷౧®>ቱȖ'̒ !* j׷¶ d+a îDȩ stI$ß˷01¤ !&+a~˷01,×r γ +axDaܾî׷ȖZÕøaȏ0èÖñ ͩȩ YቱቱS$Ѥþ + }²+a ౒Ρ !®>޸Ë<౧R \± # B¤6 B B B /2,-:1 4702,5 þ>´]a˷ b ȖÏyO§>ȩ!90 Åȩ˷TCȩϤÎ202 $88NȖ,÷ø+a202 ϤÎ³˷TҔந ÅD~ \± # ª´] '̒ª +༐¼½ ,tቱ xD҅ ÏDCy 78జÅ³Ȗ'̒\± ß # "D ,ቱ˷ +aÉþFG $8+a~W !® x݋ Wࢨ ¤ ׷Ȗ)*$ǎ׷˷T×"FGWࢨÎ˷ >@[_01˷ ,tÍC]"# ¤xD~ ÎWࢨ§Ù ¸׷Wࢨ '̒ççǎ #׷̵Dd* # !90Yǎ 47/07 yål̤ 78Õ^̤09* 1700*5,088ȑቱl̤øa ቱ .15.4.2.1 Ӏ6;79*94*-:8Cªanͫ ~& )*ȩ ®ȩ »¼ ˷YZ҅yȩßè%&'̒ ၠ>D)* & y_nȑß˷Äޮ>Áநၠy ® & >_¸ඥ}²+ noҮ +a®ÝÞÌ ҅8 Ƒజ+aDˏ Y>ርˑቅa"> ´]axD ;79*9 4*-:8g +a౒Ρ҅¾¿ȩ'̒8 bȉ ̤ [࡚ ၠᎵ Ƒ+»,þ±Ȓ ၠȩ ȖCOa 68N /2,*809*2,8 D FG ³+2,8D yå FG ɢDV¹8Nȩ ̤ ȉ$8Ȗ*÷ø2,8D Ȓ_ ȖၠO <ȉ68N҅Ö 2,8D ּ׷ 39/2,*809*2,8D897:.9/0;.0B/ 0;:2,8D¤6 b+ag8NCDR Ȗּ׷~˷TaÊҔ ȩä ȉ G ˷T 7+ȖၠOnȑǎ҅8O< ˷ »¼[_#$Yö #$ၠ ̵ ؿGసజ+a ÇÈ D³ +ၠD ÕO׷ ̵ÂèR±Ȓ5¾ 15.4.4.1. Q2,553 /2, Ì LÎᎵּ׷ïû P?3:ȩ ၠÐÑ Ƒ4ô¼½ ந҅Ȓ_ /0; ñò 897:.9:8-*/0;.0Ƒ$8҅y897:.95 .* /0;.0aÐÑ è3¼½Ȗၠ¸ඥ WWȖy நӀ, ~xDȖéҔ)*҅׷ȩ҅CDᎵWWؿ l޻ȩ ၠÏ&Ƒၠ Ȋ aÐÑD 3:897: .9/0;.0À :Ì#$LÎ)*+aÀ ±Ȓ nȑȖ' ëᎵ Ƒ> aӀ78VW1͵Ȗ>ȩ êÙ,ÇÈӀ>ᎵȒ}²+a¸ ඥ<ȏ0 ýãD˷TGäܖ˷01yåܖYZCDI] nͫI§Ùȩ KL¸ඥÝÞ ҅+,01 ȑ4Ȓ () 68NȖC࡙é÷a ÇÈ ȖᎵyO ¤ ˷ () ˫ǎ'+ ïNּ׷8 C01 C y 9ñ nͫÝႋ* ]Y࡙éGä ȏ0è Ä2ܖxD 'ë±Ȓ ¦§̤ቱ+a'̒YZ÷ø¸ඥ̤Ȗၠ DMA Ӏ < .15.4.4 ;4/ /2,*1700*.4Q07039897:.9 /0;.0B/0;890*9890 /2,*1700*.4Q07039b׷C ˹)*'̒WW Ï=ᇇ,¤ ּ҅׷Ö FG³01ȩ ®׷ ύѤè Ƒãä,¤ !*%j WW¤#!*!*ɢ>¼½˷8ȑÖቱ6WWּ׷D j1? ,ϤÎD ~W jɢ¤ 09* 1700*5,08>ቱ xD ÙDå h༐၏BCD+a 47/07ȉූ6WW˷ 6Dȩ ቱaLÎƑÖ÷å'̒Ö°ූ +ayåȩ˫¸ඥ /2,* Q,3/? 0ƑFG 6t >?a LÎFGɢD'̒+a˷T-. ҅yÖᎵȩnoÐ N a aLÎFG̵ aϤÎDၠÐN<)*'̒aLÎ÷ '̒ ቱM,.×" + ïnoƑȩ,ÝÞè , ऋnoyå ,. d´+a ύ[D,ȩ Í{ 3þ 78¹^̤࡙éä_*ࢨ=+,ÖȒxD 8 I࡙ é4 ڣȏ0èÊܖ Ӏèˣ$> \ၣ ~ ౧'+ïNxD*ࢨᆿÞvw +a ȏ0ÝÞƑC ؽ,'+ ïNÇÈ yåz{× Ï8<]<V8N'(¤F nȑቅaÆ±÷'˷¾CؿòÖޖÎ >Â Ƒ׷Ȗၠȩ Ǿ% ¤ޖC ࡙éÂnႋ YZ¨ïÎȑïûቅa"÷'Ör6ª÷yOȩ 8NȖၠ ¾C Â+a"¥yȩna 'NODCyO'̒Ƒ68Nࣣ ၘȋ நþ÷\w¦˷"º» +aopnoƱؿ 5̓'+ïNÇÈ Ï ,ࣣxD ڣÊۈOã×)Á0'̒ȩº»̤<Á0'̒ Ö*(ޖ¯޻ޖÎ,ý8+a~˷ Ꮅ¾¿+a´ၠCOᇰ̤èGä Á0'̒ D׷+aࢨ+aÁ0'̒*̕ڣ, yOƱ_ၠၠ ූ+a ᎵC)*ሓ҅ èãä ® vwÝÞ xD +a࡙é' ë & vw ® ֧} ࣣ &6Ã¶ ऋä +a ®ȏ0IܖÙCD &¤Õ_࡚+üb +,=p03:2 /,2*/,9,*/70.943% Za9 ޖ׷+aऋno , Ȗؿ˷TÎ ҅8?ú+ no LÎύ[ऋno ,ܖ̒'ìíª $aC )*T<$ ª%+,ȏ0è ऋnoƱyåÏ[࡚ؿ÷҅8ࣣ +a YᎵÕóቱ'̒,noä_ȩøa ύ[IKL޻ऋno+ïno ऋ DMA 15.4.4.5. ;4/ /2,*544?*1700897: .9/2,*544? B544? ;4/ B;,//7/2,*,//7*9,// 7¤6 bC)* '̒ ּ׷ FG ࢺȩ T-.YȒ_+a¸ ඥÖǎ Q,3/?0 '̒ Ö FG Ȓ_+a˷ǎ /,2*,??4. *.4Q07039ÐN D׷ࢺý, À+¤Öቱ 890*9,??4.,943¤6 890*9 890890*9,?3 897:.9 /2,*544? B/2,*544?*.70,90.4389.Q,7B3,20897:.9/0;.0 B/0; b+ag ̵ý ȩࢺؿȩ +a Q/2,544? ࢺLÎ+ü P? 3: ÐÑºޖÎ±Ȓ"$<V _ርˑaÇÈ Ȗּ׷+l YéቱGä"$ÐÑñòÖ@Ë̤'+ïNÇÈ A +,VW Ï8ᎵVÕ±Ȓ ׷ȖyO¾¿Ԩ+aÐÑ Ƒ"$ Gä ̕ڣ ࢺƱࢺ+a"$Ȗּ׷yOȩ 8NȖᎵ)* ቅ aIT¦ + /2,*,??4.*.4Q07039 ´]noyO noቱ ࢺ Dቱ +ï+a 15.4.4.4. DMA ࢺ ඥ ϤÎ¸ > &! ܖLÎ )*}²ÙaLÎႋ#$ ~W B;,// 7/2,*, //7*9/2,*Q,3/? 0¤6 /4; >abÕ}²+ag'̒˷§BCno҅ûü +aᎵ)*+aऋ ̵§Öº»WWD+a !& ?ၠÎ Á0'̒'®* #*%ǾYº»§ ύ»'̒ ¾Cၠ^C̤ +Ö º» YZ* ࢨ+a Á0'̒ ύ»'̒˷ §Ȓ_no±Ȓ '®*% * N+a'̒Önoȩ 8 Á0'̒6 D+aº˷ "҅ၠyxD ý+aÁ0'̒ ¸ 2҈̕ ڣ+, ȏ0+¥ {Ǯ׷Öno'̒+aၠCy˷" జǌ yOၠCy^ޖF§ëˣ'̒ Î Ö÷ ¤ ,YZؿ ÖYé¤F׷ /2,*:32,5*83 ?0Ög' ÷ޖyO+,Î ҔèÕÖëˣ˷ޖÎܖBÖno ˷Tؿ é\'̒Ƒజ+ ׷+a '̒ _aύ[ ÙüҔ è_ǮaÖ҅ȖyOý_Ǯ +Ò+a '̒ÕÖnoᎵҵCO ˹ȩ ó01Cி+¶ਢ1 ÕÖ๣+¥ a'̒ ؿCÖno ׷ • ޖëÎ *ܖ̤҅ïû a Ö êû+aÖëˣၠ '̒ COÖno lڣ Êa$´78 Ꮀè^̤ ¤ +yÄ2'̒˷ §ܝ /2,*:32,5*83 ?0§Ꮅ 6gånȑ ҅˷ § l̤a'̒ÕÖönoᎵCּ׷ • +Ò+a '̒ ÕÖno ҅ӐǎaၠCD÷ ÷ᇗ 6ïቱ҅Öno,³+• '̒ؿ no bǎ ऋ +,*Ö >no '̒[890 < /70.943 ϤÎؿ ïቱቅ, /2,*/,9,*/70.943 /70 .943¤6 ;4/ /2,*:32,5*83 ?0897:.9/0;.0B/ 0; /2,*, //7*9 /2,*,//78 90*989003:2 /2,*:32,5*83?0>K^b+Ò÷ᇗ҈ñnoּ׷ V& 8N D FGɢD¸ඥ Ȗyå ÷ø̤ၠ /70.9 43¤6 /2,*,// 7*9 /2,*2,5*83?0897: .9 /0;.0 B/ 0; ;4 / B-:11 078 90*989003:2 /2,* /,9,*/70.9 43 dma_map_single >no҅:Ρa'̒*~ , ȩ׷Ȗ .ލ NOȏ0è, a Ï ¥ ּ׷ ݡH ȋaIµ. +, DMA_BIDIRECTIONAL, xDᎵȒt[¾¿6ȩ,ܖyO '̒¨ï˷TEঙ. Ìaa=p6Ȓ_+ag¾ᇏIB}². ¾¿ȩ DMA_NONE DMA_BIDIRECTIONAL. 9, ȩÖ n+ޖ8NÎ DMA_BIDIRECTIONAL DMA_FROM_DEVICE àá . Á, , ޖ CPU Î; öDMA_IO_DEVICE ּ׷Öȩ ),aၠ (ּ , Ʊ#, ̤+a write 01g Öޖ 2 a=pּ׷D?5 . 8NÎ DMA_FROM_DEVICE DMA_TO_DEVICE xD҅WWïûañò bQ Ƒ¼½P,828.,9907?89 aÐÑDȏ0ȻYZ 897:.98.,9907?89 Îඪ҅¼½Ö÷ᇗ'̒ జ+࡛Dý <[ˏ+ano+a%&Dɢ]̕ڣ, no[࡚நȖé æ%& »¤ _+aΡa'̒[_҅Öå nȑº a ּâ) ޻8N+aÁ0'̒ ؿÖȩ §¦ ڣ :Nͪ pÊ<a±Ȓ̤+aΡa$ ސ4Ȓ,҅y ᆼ Ƒ îÍ èǎT^జ+a<¦§+a¤xD׷҅aaܾ!6׷%&*Îඪ R01è ßèC)*Tၠ|yÖìg _+aΡa )noҮ01 ¸ ඥÝÞèȏYDC _+a d+ano%»ªළç DI Ø&8Nݗ$a)Ƒ ±ȒƑ6$8 ª¹º ÎඪÀ:<Í YZ÷~҅82+a#$ၠyå޻N+a %& aL øaM>+AnoxD Ȗy౒ Ρnoùa'̒ᆾऋYZGä*ࢨ±Ȓ +aÖno˷T® '̒+aTL +añ ÔDE ® Wࢨ 6790; 01g y>?øa ïð+a 70, /;̕ڣa ၠ ̤ޖøa '̒ I)* ÷~Î 7ၠȖno%ìínoD+aÃþ%&ऋ 15.4.4.7. #$ /%& Â¥¨ï˷ ¤ <ó]åg¾ V no+ TyO¨ï' + ïNÇÈ 8Naቱ 6×ª+a'ඥ+6 Ǯ xD ၖTnoּ׷ ርˑ ^VȖ ࡙éæȖ >no T411809 <890 ϤÎyÖ 890*989003:2 /2,* /,9,*/70.943 /70 .943¤6 ;4/ /2,*:32,5*5,0897: .9/0;.0 B/0;/2,*,// 7*9/2,*,//7088 03:2/2,*/,9,* /70 .943/70.943¤6 :3830/ ?43 411809890*9890 /2,*,// 7*9 /2,*2,5*5,0897:.9/0;.0 B/0;897:.95,0B5,0 Ìb897: .95,0À:ȩ_ < ऋnoȩ p '̒09*:807*5,08noȩ +a 897:.95,0À:6$8yO {û¶ȖyOÝ +a '̒no a'̒Ȗ 15.4.4.6. 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ȖᎵؿïû P?3:_ȩ Ã+LÎؿÖȩ [࡚ ! ® avw6 ! ®¸ඥҔந vw VWȉǎ~˷ '̒ ȖyO*yOȩ +aၠ68NȖڣ D࡙éÊ(ַȩּ γɑ8࡚+aNOºV yOȉ ǎ+aWۈ _] #$ Ҕந¼DVYZ®Ã+ ÃN aD҅D+a ! ® ӀCvwaÏ [_øaYజ+~Wȉ Ï Oࡘ$a < BB 3?!346898,1094,.. 088 9Q0 -:11 07 .45!94:80709. /2,*/7¤6 / 2,*890/0; /0; /2,*, //7 /0;/0; 5.*/0; /2,*:32,5*83 ?0/0; -:1107BB &32,59 Q0 870,??! 4:7 /0;.039077:593B,D08:709B 897:.9/,/*/0; B/0; 897:.9/,/*/0; B¤ /0;* /6 ;4/ /,/*39077:593976;4 / B/0;*/897: .959*708 B708¤ a>8࡚ b a4Ȓd+TؿƑfͫ ( Ƒ҈ ñ aLÎno*Ö ÷~'̒YZ ၠ±Ȓ < 6 709:73 ¤6 * .422,3/*7089078 6790-/0; B $9,799 Q04507,943 B ?03.5:*94*?0 .4 :39¤¤67089078 6790?/0; , //7.5:*9 4*?0-:8*, //7¤¤67089078 6790?/0; * #¤6 *e#b* .422,3/6790 *7089078 6790-/0; ¤6*® $ .422,3/*7089078 6790-/0; B $09:59Q0 /0;.0B / 2,*, //7 -:8*,// 76 /0; / 2,*/7¤6 /0; /0; -:1107.4 :39 5.*/0; -:8*,//7 /2,*2,5*83 ?0/0; / 2,*890 .4 :396 /0; ¤6'®* #* b'®*% * / 2,*/76790 /0; B,59Q0-:1107 147B 76 //,*8:9-*7//,*,2/ 9.4:39¤*890 a ~ሓDd+aၠw Ù~ሓᄇ»¼ § DWࢨÙ̵V&$ 8N '® ǎñ ͩ D 706:089* /2, FG ɢD p(ַÞ574./2,҅yÖ Ã+3,20Áந 3,20ϤÎD+a h=Ɩ>àâၠ$ +ü_ >ïቱÝÞ*d* ! è$ ࡙ɢ *d* ̤ 7 tÎ I೜é, +a ǎ ~ሓϤÎD+a ;4/ 1700*/2,:3830/39.Q,330?¤6 39706:089*/2,:3830 /39.Q,330? .4389.Q,7B3,20¤6 ëb~ሓí >´]< °+aQ ƑÕóïû Ì LÎyP,82/2, ~ሓ˸<%Ǿ<Ƒඥ 78Õó^̤҅8® È Ȗּ׷૕Y˷T˸ 15.4.5.1. .˸ DMA ȩ . WࢨY°³ DMA ~ሓ, <+LÎ> DMA Ƒቱූ~ ሓæ٫ +a DMA ˸ >}²+a[_ DMA D+a01 »¼ პঠ , ˷T պI ÷a . ҅ȩ 64KB ǎ ([_҅ ÷~ 8 ȉ+aӀ W̤Â. [, [_҅˷~ሓ'p 0 ̤ 7: ~ሓ 4 ISA ´ၠCy § ˮ§ B.+RÖ )޻, [_҅÷ 16-ȉ÷~; జ 1 a6÷ ~ 8 ȉù AYZ҅_ Â+a ; జ 2 aDËǎ 286 ֧} èHͪ . xD , జ 2 a 8¦+ PC 6 )޻̤01÷ , YZజ 1 a()Ö)޻̤జ 2 a~ሓ 0. 2 a DMAC ၠ [51]: జ 2 a(Â)Ö=҅8 DMA æ٫Ƒ. IF PC ïû ,+ DMA Ү. 4 aၠy DMA ౧ 4 a"~ሓ", ùaº» PC èȩ GּƑ׷ DMA Ð;,. >ޖ÷~Î , ¸ඥ,<÷~. ҅®<҅´ၠ ~ၗ>m aᎵǮC; ҅}²³ DMA The device driver ඥ׷޸Ëၠ ,. ၠWW Ƒ׷÷~Ð;,. ¸̤ޖëÎ Ҕ÷~Y DMAC ౧; ÝÞၠUַ .,ޖaၠؿਢ1 DMA Wࢨඥ׷҅m÷~Î The peripheral device . ޖ,҅Îåɑၠy ÊËGäƑ÷~Þß. ׷a N̤+a DMA Wࢨæp , ҅´]¸ඥëYZᎵæpඥ , ˷ , å: ÷~ . ҅®ïû+a ၏Î>Þ8 , ˫ǎ DMA ÷~æ٫ w The 8237 DMA controller (DMAC) ~÷ ޖ Î aҔȏïû ®$¸ඥè ǎ ./7;0788.8,Q, +a ®$¸ඥÂ$ѤD $$® ˷TঠƑ D| d+Ì ҈2Y´ၠ÷Ꮅ® $¸ඥÂ -.>Ꮅ ®$¸ඥèæpඥ ÂVè àmȩ <® $¸ඥÂ÷~b®$¸ඥˋ# % DMAISA ၠA .15.4.5 b.,8 .,/0 b$4:3/ ?,8907 207?34 .,9574./2, TΧ01 ƑRѤbD574./2, Þ +aÄ; < BB &¤6761700*762 !*/0;.0 /2,¤61700*/2,2 !*/0;.0 BB 897:.9/,/*/0;.0 B2!*/0;.06 ;4/ /,/*.?480897:.934/0B34/ 0897:.91?0B1?5¤ < 4503ïቱ .?480Ҕந>8࡚b < 6 709:73 BB < 709:73077 476B 4725 ?02039-?4.D34503B &¤6761700*762 !*/0;.0 /2, ª/,/ª ¤¤¤107747706:089* /2,2!*/0;.0 709:73077 476B 4725 ?02039-?4.D34503B & ¤¤¤##&!% ª/,/ª%$*® 76 /,/*39077:59107747706:089*762!*/0;.0 BB 897:.9/,/*/0;.0 B2!*/0;.06 39/,/*4503897:.93 4/0B3 4/0897:.9 1?0 B1?5¤ Ƒ÷ CÌ˩@®#" ඥvw +a op/,/ ၠȩ78 7Ý /,/ Ï4503þ>8 à ̕ڣ&+a ñ҈~÷ ޖÎ COÀ ၠ)*+a®#" ඥ6 ÕÖ ҅Ùùaȩa\$ርˑ]ãyO aპঠ 6ሩ Uַ> WࢨD \~ሓȖÕ WࢨƑඥ §YZȖ Ƒ̵°҅ 78 ® ၖȖWࢨ ,ȩ~ሓ6*҅8C yå˩@[§Wࢨ ˋ#Ꮅ t+,˩@6$8Ȗ TΧ <Ï.® ޻,LÎ[Wࢨ ҅ º,Wࢨ~ሓ3ǎÏ+ »ܣ ~ሓ6<Ƒඥ+Rؽ ؗཔ Ȗႋؗ® È 78 *Ö ÷~h༐Î. +Añ,)*ሓD Õ+a DMA ÷ᇗÕó҈ñ. aLÎFGaᎵ int get_dma_residue(unsigned int channel); . ޖrÎaLÎ DMA ~ሓïû void enable_dma(unsigned int channel); *ä. Ö'(B{¤ , YZ, [࡚ , ̵ͩOIC?~÷ޖ̵Ö˫X. ( ÕÖ, ¥[_ Ö~ 8 -ȉÎ +a DMA ~ሓy ˷Ö˫ X. a ~ሓּ׷ Öቱ ූ_ࡘG+ ࡛C࡙é±Ȓ void disable_dma(unsigned int channel); , ׷÷ DMA ၠ,:+, ìݖ 4Jؿ ^, LÎ, aÎؿDûÎ. ,̕ڣ³ 16 -ȉ ~ሓ h༐; a ቱ÷~h༐Î. count ϤÎƱ void set_dma_count(unsigned int channel, unsigned int count); (^"¸ඥ "+༐, ̵Ì). rȉ Ƒ . addr ϤÎؿD+a¸ඥ ቱ DMA '̒ . aLÎ= addr Ȋ 24 void set_dma_addr(unsigned int channel, unsigned int addr); . 78 [C¸ ඥ.Å, xD҅ƱyåÖ࡙ ISA ¸ඥÂၠȩ > °¸ ඥ. ӀWDజ 1 a) ޻̤జ 2 a3 aÏ , DMA_MODE_CASC ADE, ҅Ö ë̤ၠ(DMA_MODE_WRITE). జ ( DMA_MODE_READ)DÕa ~ሓؿၠ À void set_dma_mode(unsigned int channel, char mode); LÎY ᇗÁ: . _࡚ ,å:÷~ ïð 3 î: RAM , ؿÖ÷~ύѤîÎ (åh༐h၏ ), ؿÖͪ ᇇ̤Ƒ æ٫ +a?aã,.ּ׷C׷w , Ҕ I/O ׷Ƒ. +aᎵÌ¼½ LÎ,. xD , ҅Cּ׷ Öw , ׷ȩ?aãּ׷Öw ٤K̵Ì ƑÞß . FG DMA ?aãYZ void release_dma_lock(unsigned long flags); ҈aã.٤KƑÞß, ׷Ȗ<àá; ҅ؿ Ö÷ø ³Â§LÎ ´ DMA ?aã. aLÎ®÷ è Ƒ; [࡚, FG ɢD+,¼½ ̵ƑÞß unsigned long claim_dma_lock( ); ab ᎵCּ׷l޻±Ȓaã6xD aLÎÕ}²³Ȗ>Ö+a? aã\ݖ `_ /2,*853*?4.D _࡚,҅'(¥à¸BƽD+a ˩@ პঠ YZ8 N$a÷¾¿ 8NȖ'ëၠᎵ³ ®$ၠVȖּ׷ၠÝÞ@˸Ƒܼ̤˫æ٫÷~ÇÈ ȉ ȉ < Ã¶78C÷Q <+,¼½ ! ȏ0ÝÞ@˸ P,82/2,I$78ͧȖ 8NȖÝሓ ˷ op( ¹RȖy5 [þ + ༐}²+aǎ "g ëၠ þD&Ö [Ӎ Ꮅ<҅ҔநÐޖ¯Gּ+a4.9? 3Í,Gä ºܣ §Ìa nͫ׷ må࡛÷~, ,ëÖgᎵ)*ቱූ LÎ ܖ*(ãD˷T ᇗÁ&Ꮅ Cᄣሓ xDýخ a nͫYV ࡙é±Ȓ˸§Ꮅ4ȒÂ*ïðቱ ූ 15.4.5.2. < DMA 1234ၗ ̵Ì5 8Á~ሓ ᎵCy ÀD+aΦȉ ӀWˣ ~ሓ01,YZC °҅ÙT^Ꮅ ´] ! 34º̵֨҅%4!! IΡ¾!}! ༫>@²³´ந4µ¶༫ඪH¹ ! z̒j׷®ࢨHI!! ¨© ! efªǎ«¬R¤!# £I! ;ǎ˷A ! I¡¢>@HǎbcFᇰ]^ࣣAabd qrst! uU޻wƑyz{UH༐!}! ~ ! ළᎵ8ȑȩᆾ3Ҕநڣ@׷: ! Ǯno> _ቱ ූVÝÞ@˸DȖ +eÓÖÝ)̤ၠ Ƒɢ +a ,ᎵC]C$ YZ'̒$8 +,ၠqr(ַò ÝÞøaÌC ၠëøa® È aၠÃ+nͫWWïûDቱ ූၠ Vڣ-҈ñ ++aÊ < ¤6 709:73708/:0 70?0,80*/2,*?4.D1?,8¤6 708/:009* /2,*708 /:0.Q,330?¤6 :3830 / ?4 31?,8 .?,2*/2,*?4.D¤6 39708/:06 39/,/*/2,*8/43039 .Q,330?¤ ñͩ҈ñb > ùo޻+aႋ+a LÎÖ < 6 709:73 70?0,80*/2,*?4.D1?,8¤6 03,-?0*/2,.Q,330?¤6 809*/2,*.4 :39 .Q,330? .4:39¤6 809*/2,*,//7.Q,330? ;79*94*-:8-:1¤¤6 809*/2,*24/0.Q,330?2 4/0¤6 .?0,7* /2,* 11.Q,330?¤6 /8,-?0*/2,.Q,330 ?¤6 1?,8 .?,2*/2,*?4.D¤6 :3830/ ?43 1?,86 39/,/*/2,*5705,7039 .Q,330 ?392 4/0:3830/39-:1:3830/39.4 :39¤ , , +aᎵy8Ҕந+aLÎ> m+A DMA ÷~:ȩ DMA Ү̵ . ҅Öූȉ). flip -flop ?dᆼ׷Õó÷~ 8 ȉ; (ַòؿ^ flip -flop( >ၠූ҅_ÕÞß ) rh༐(׷D¦~rh ༐(׷҅Ö¹)>Ï Ȋ)* 8 -ȉ±Ȓ> , YZa flip -flop Ö > 16-ȉ Ү . , ҮÖ 2 a a LÎ DMA flip -flop. a flip -flop void clear_dma_ff(unsigned int channel) ; 2 a 8-ȉᇗˣ±Ȓ> ´] 16-ȉ cÎ. FGɢD 0 YZ 4Ȓ ,DCy ZË ( xCD 0). Cy ZË N>?)* ~ §~÷ͩ ˷ virt_add. <-.st˫ ฬ\ݖ ȉ prot [À+. io_remap_page_range ּ׷ à I/O ȉǎ mmap Tؽ LÎ. ҅8no size h༐ß , pfn ÀÁ Tp º»̤-. long size, pgprot_t prot); int io_remap_page_range(struct vm_area_struct *vma, unsigned long virt_add, unsigned long phys_add, unsigned pgprot_t prot); int remap_pfn_range(struct vm_area_struct *vma, unsigned long virt_add, unsigned long pfn, unsigned long size, 15.5.2. Ҕந mmap ¼½+a VMA ÐÑ . struct vm_area_struct; KM_IRQ1. KM_USER1 , KM_IRQ0, . ǎᎵ , type ּ׷D KM_USER1,kmap ~NO ü; ÐNno 6OÖ ύѤþ w void kunmap_atomic(void *addr, enum km_type type); void *kmap_atomic(struct page *page, enum km_type type); #include #include kmap FG+a˷T-., Öno̤³ +T , 8N)*Y ý no . kunmap _³+TK^no. void kunmap(struct page *page); unsigned long kmap(struct page *page); a TÌp̤҅˫ struct page À:.+ ސÕÖYéno~ T. pfn_to_page ᆼ Ȋ Tpage_address 6 .ސtᆼҋ+ ü, ˷T 4ᇕ<҅8˫˷noˣ struct page *pfn_to_page(int pfn); void *page_address(struct page *page); struct page *virt_to_page(void *kaddr); +aÝÞTÐÑ. 01˷noƑ struct page W, ³ÁֽӀÝÞ T(h༐)<+a TÌpؿÖ9ȉ> ᆼC _+aßȉÎ. PAGE_SHIFT PAGE_SIZE ҋ+ ü.ސ˷T4ᇕ<ß tᆼ unsigned long __pa(void *kaddr); void *_ _va(unsigned long physaddr); <˷౧˫LÎ<ÐÑ, ύ&<+ü, Þ. #include #include 15.5.1. BCDEF ˫ǎ˷÷=pb Ϥ DMA_FROM_DEVICE DMA_TO_DEVICE enum dma_data_direction; DMA ࢺ>౧ DMA "LÎ.ý, V࢓, <ȩ void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t handle); void *dma_pool_alloc(struct dma_pool *pool, int mem_flags, dma_addr_t *handle); void dma_pool_destroy(struct dma_pool *pool); allo cation); struct dma_pool *dma_pool_create(const char *name, struct device *dev, size_t size, size_t align, size_t #include ቱ<°+ï DMA no , +a¹w*Ꮅ{3+ü~ #include ><´ၠ~ၗ. ඥؿ¸ .ސ,C3 LÎ, ˷T , -., <¸ඥ tᆼ void * bus_to_virt(unsigned long address); unsigned long virt_to_bus(volatile void * address); #include I 15.5.4. G޻˷ +aå࡛ I/O ±Ȓ҈ñ. LÎ, À int aio _complete(struct kiocb *iocb, long res, long res2); ࡛*ä.ҋ+ü, FG V¹8N³+ IOCB )* int is_sync_kiocb(struct kiocb *iocb); °³+TT'Ƒ. void page_cache_release(struct page *page); ҋ+ü, àâ³+T_"ñ"( Ö½¾)YZ)* ë̤҅§=, ҅Ö °̵. SetPageDirty(struct page *page); mm ->mmap_sem. ؿ w p s t ' ̒ ̤ ˷ Y Z F G ּ struct page À : . g L Î , ͪ ã + a struct page **pages, struct vm_area_struct **vmas); int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int len, int write, int force, 15.5.3. ҔநG޻ I/O a Y vmalloc ´]˷T-.ּ̤҅ struct page À:.+ސᆼ struct page *vmalloc_to_page(void *vmad dr); .st[, Öȩ ;(void disable_dma(unsigned int channel DMA Ƒ . addr D+a¸ ඥ. '( DMA æ٫ void set_dma_count(unsigned int channel, unsigned int count); void set_dma_addr(unsigned int channel, unsigned int addr); void set_dma_mode(unsigned int channel, char mode); ҅8÷èƱ˫X<FȩO Ƒ Ƒ¼½ ISA DMA LÎ̵ . a , g´< ° DMA ?aã, ҅ؿ Öw void releas e_dma_lock(unsigned long flags); unsigned long claim_dma_lock( ); ISA DMA ~ሓ̵Gä . DMA ˸. ˸ؿȩ void free_dma(unsigned int channel); int request_dma(unsigned int channel, const char *name); nȑÌ=p.DMA ˫ LÎ<ҋ+ü. ҅ؿÖïû>ȩ >ܖ,&ύ+ü #include 4Ȓ , C)*ቱ+a~ሓ DMA Ƒ. , [_ùaV ïû DMA ƑÖቱ ~ሓofÞ. Ëǎ PCI DMA C /proc/dma ࡛.>1,'̒ ؿÖ, dma_sync_sg_* y ٤K,no . 8NanoÖ ਢ dma_map_sg no+a %/ìí ±Ȓ , YZ dma_unmap_sg direction); void dma_sync_sg_for_device(st ruct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction); void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dma_unmap_sg(struct device *dev, struct scatterlist *list, int nents, enum dma_data_direction direction); dma_map_sg(struct device *dev, struct scatterlist *list, int nents, enum dma_data_direction direction); ݣ¸ඥ<'̒Í>÷ø³ၠ , ׷Ҕந %/ìí±Ȓ,. >ÐÑ¼½+a9:C ࡘ+a '̒ I/O ±Ȓ . ҋ sg_dma_address he sg_dma_len ya %& unsigned int sg_dma_len(struct scatterlist *sg); dma_addr_t sg_dma_address(struct scatterlist *sg); struct scatterlist { /* ... */ }; #include '̒,).,.(γ, ׷ၠí ऋno, LÎ, 8N÷ ؿ+a '̒ ׷ȩ࡛ +a Y+a ऋno '̒ . ؿȩ dma_data_direction direction); void dma_sync_single_for_device(struct device *dev, dma_handle_t bus_addr, size_t size, enum direction); void dma_sync_single_for_cpu(struct device *dev, dma_handle_t bus_addr, size_t size, enum dma_data_direction , ऋ DMA no .ýऋno LÎǮ =p, DMA_NONE DMA_BIDIRECTIONAL .̵÷ ³ޖ>÷~ 16-ȉɢ, ~ 2 a 8 ȉ±Ȓ. ҅ؿÖ^, ~nȑÎDMA flip -flop Ö void clear_dma_ff(unsigned int channel); .,~÷ ¶ޖñͩ DMA ҈ñ§ , aLÎFG 0; ɢDCy ZË׷Î ᇗÎ .÷ ޖ aLÎ, FG g-҈ñÎ8NᎵ)*ሓ+a DMA ÷~Gä , ҅yg int get_dma_residue(unsigned int channel); +a DMA ~ሓؿ Ö˫Xቱූqt. ,LÎ¾C DMA ~ሓ Þß . void enable_dma(unsigned int channel); ˸ eּ*F 19C 3AB è?@ - 3 =:; ɢ> 8 ]708907*-åÞ/0;3!I#$:;҅¿k< ˷M ቱ j 8V 2, 247 D8ϤFȖၠ7(ȩkI<˫ฬ7Ѥ{˷MwXè҅574./0 ;.08~ 39708907*-åÞ/0;{:3830/392,247.4389. /,743,20~T / ƑAó ~1-å3: 18 :3 ͫ*F708907*-åÞ/0;{˸ ҅]^̤˷M࡛ B2Ꮅ &9జ 16.1.1. Ꮅ˸ U "<ၠ7#Ȓ($ƲޖÀ ! F Ȗ ˸ ð༐ RSၠ7 ! Ǿ2 ȩ˷M;ȩk҅ၠ7˸޻Z 2ᎵႋᎵؿ¡ȩk ˸ 8-:ååᎵƑ8ȑ҈:3 8VȖȩkRSßàBC Ȗؿ¡ ּ¿À˷M ༐ 3 ҅ Ȓ 3 ҅ɢÇ ၘȋ ȑ&'˷M Ȗ ÍÎ » ࢨ ßàìC˷M¿À#$ ርˑ 8VȖၠ7ȩkRSB༐ ၠ7 ˷MÖ}ÍÎҔந҅BC÷ֽӀßà̓A 3C2 3 ëû༐ :3ɢ;Ȼþȏ<ȩk à 2 2BC÷˷M̓Aޖ3@ABCF 32 ̵೜pAóô3õöîˣð༐ 32Ꮅ S&¯Cëì˫ÏÐf çèéê 3Âc7,2/8ÞҔந Ꮅ{ãj 8-:åå~æ ˷Mßàáâ-3 7,2/8Þ Q҅ Û03Úz2 Ûǎ˷8ၠ7 3ØѤᎵ ҅Ҕந- ×Ƒ 8ȖÕÖ} 01 MÂB4c ̵˷2޻ZÓ 3 ÌȖؿ¡ÍÎÏÐf ؿ(Êͪ 2ၠ7ƑÆÇ¯ªᇗÉ 3 3: 2Ꮅ޻Zˋ©ȖÅ RgÂ3³´¿À3ࣣ8V҅2 » Ѥ؉¹ µȏfgR·©ªၠ7;҅¯B°±?²³´ #$ª2Ӏၠ၏®fg© ¨˷§¦ܖ3cfgᎵ ؿ¡ȩk1 h(˷8ȑx(r897:.95,0< 32ᎵRؿሓ ;gr ౧T.࡚ ҅;ඪuv˷8Ѥ8 2ᎵMؽ˷8<ǌ3JKᎵ yz {|}~ǌ8Ƒ ҅ޖwRx(F uv˷8நt RijklּknַWpq; ּ҅׷· ëj THIS_MODULE.3>z struct module *owner; 3 int ɢ, ɢ·˷M . 73ȩk. :3 *F:; î´x(ȑ Ȓȩ!vw 3=Õ 3 vw; ҅Ꮅ ¹ּ ·¿k revalidate_disk x int (*revalidate_disk) (struct gendisk *gd); ༐N:3U ". struct gendisk ϤF˷MȑèΡ3JK ; w² .· ;² ̕ڣ ;( ~"· 3 "vw ǳkǎ ;yÉ vw Ꮅ(#$¯3 Ꮅ :3 x ɢ. 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ҔQ.˷MঠÑ Ƒ~̵y|©ª 4.9å 3. {P˷¨ /7;078-å4.Þ 4.9å tÑȖᎵg ̤҅ cӀ2Ѥî´ၠ7ðñ* F 3 4.9å x 2ၠ7;45 16.2.3. ioctl < T 709:73 < 8ã0~T /0; /,9, 202809{/0; T 20/,*./,30 /0; × 20/,*./,30~ 1{/0; 57;,90*/,9,T 897:.98-:åå*/0 ; 4/0; / × 398-:åå*70;,å/,90{897:.903/8Þ4/~ 3 K,ˣ v ၠ7˷820/,*./,30~#$¿ 8-:åå ҔநǳǳÏȉ˷MÅÆh!q #$:3ၠ7¿k70;,å/,908V 7Ꮅe!vw #Ȓ ڣ ) vw·¿kT҅ Ȓ ¶ȑx 70;,å/,90 x < 20/,*./,30T 709:73/0; 57;,90*/,9,T 897:.98-:åå*/0 ; 4/0; / × 398-:åå*20/, *./,30/{897:.903/8Þ4/~ &1 3?·ၠ ූ~ 8Vvw yÉA&?ᄇ 8-:ååҔந ౒Ρ T ҅* ɢ8V ?@ 3 NGvw? · Tּ҅׷:;·¿k{Å./0.Þ*/8Þ*./,30~ 20/,*./,30/x ޻҅Ҕந e 3Ꮅ Ȗ;õP :Ìx 3;yÉၠ7r 8VȖj ;yÉ vw å4.Þ*/0;.0*4507,9438 U"áâ3x- .16.2.2 ²Ú ύ"1 2Ꮅ ࢨx ࢨ 16.3.1. ȑoѤ 3cӀ ¢Q#Ȓ ÏÐßà ҅;g ࢨ* F{wÂ A̤~8VȖᎵؿ¡ 3 ౒Ρ ;gr ࣣؿ(Ꮅ !» ƑBCB}ÏÐfxÚ2Ѥ ȩgA°» Ƒ҅ @¯ ڣ 33 :ȩȖᎵÅ҅ ðñ ၠ7QÆÇ¯ªڣg;ܖ¶-ÂªT҅ r&fgQ ýþ.࡚ ˷M2ѤÀ3fg˫?3JKᎵfg;g N2ᎵƑ ࢨÍÎ .࡚ ༭RU& )O s 03/ *706:089{70 6~T -: 110776* /,9,*/7{706~~T 706 .:77039 *37*80.9 478 80.947706 8-:åå*97,38107{/0;70 6 < .4393:0T ~T 03/*70 6:089{70 6 18706:089Û3Â~T Â$ Þ5343 %»*#5739Þ{Ø 1{ø-åÞ*18*706:089{706~~× 57 ;,90 */,9,T 76*/8Þ 897:.98-:åå*/0; 4/0; 70 6 &~× ç/å0{{706 0å ;*309 *706:089{6~~ø 897:.9706:089 4706T × 89,9. ;4/8-:åå*706:089{706:089*6:0:0*9 46~ ²W҅: D1ØѤ 3¯ ౒Ρ ࢨx Ȓjܣ҅ 8-:åå*706:089 ãj 3 x V8-:åå ȩkࢨÍÎ 8-:ååØѤᎵ45-ô3RS x ࢨ 16.3.2. !"౒Ρ îD8ȖU "Ƒ áâ cdࢨ ڣ ܖ"Wp89kl #Ȓ AȖᎵx(ሓ˫ǎࢨ .࡚ȑ! 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Ҿ٫ ô<༐y¿࡚ȖWt ɶ ,-)%89 ౒t./ g=öN<Ä҅nâѤxß% <=Ϥ A nÎ d qö Nܖ/.=F Ӏ%%5 ؽ%ȉූ§¨ ɢÛ҈ø%./ ǎළᎵcd 0.';0/*309 ڣ 309*/0;.0 nàȑ ޖ=ၠ È%ÉqU 309 */0;'.0cd¢>?O̵ÖË <Ämn 1700*309/0;˹]Æ . ҅ؿ ÖËܝ1̤F[ၠÀ % ܖ *90,7/43*544 F%˷8ZÄ 83: ˷5˹mn҅%LM޻ <ÄȖF[ Wt˫ؽ= n҅ `a | Æ Ȗ%Ꮅ8k_=Lq=cd% 1700*309/0;׶W309*/0;'.0cd¢˷5:370 Ö'8907*309/0;%mn£>?Ƒ @]޻ < 709:73 < < * /0;8þ'(1700*309/0;83: * /0;8þ'(83: *90,7/43*544 83: */0;8þ' (:370Ö'8907*309/0;83: */0;8þ' (T '183: ' ' 66T 147' '39' T 0,3:5;4'/* .;4'/83: >? 309*/0;'.0 cd ÖËàȑWt%˷8 ZÄ\Æ%ZÄTUÌ F[޻ ×Yᇇlࣣ Ǯ `v%× 17.2.3. ᇇ 070.0';0'39077:598"*7**'398/0; "03,-83: 4.» X57'; 9'3'*«.4*3'85 ;'57*:983.:#041897'8 ;'57 202809 ;0/;'7 5*;309/0;'57 a %ؿ] flpÀ ,Ö8</0;*,//7öN `aၠfළΧfȻ=Pn%TUၠූ 89¼öNÆ 1U ၠූ Èàȑ67¢a{#!0%ၠූT ٫j0 9W07*809:5 TU࡙ %89q˫޻ ٫ 17.3.3. ޻ ifconfig ) Ƒ. )%ȩn, Ì y٫ ^yfh ၠ9ቱ% DMA Pሓ. =öNÌ_¼hၠ xඥlq, â8 ISA. ҅ၠᎵ unsigned char dma; #!ၠූa .(IF_PORT_100BSAET) fළ ޻. ҈M%" . â8 , =ö Nn¬lÜÝ¬ ᇄඥ (IF_PORT_10BASE2)irq %ɢ. = ɢܣ B ªl ifconfigZޮ %Ƒ - . ׷޻ unsigned char irq; ͪᇇl. =öN, ႋ¿:./Q%˷|öN, ˷5ȩn҅. l˷5 3 ËƑÁØIɢ( PQ netdev= ϤU), È× åæ ׷̵ɢ. base_addr f ׷>? lIɢ. ifconfig ׹nÎÁ Gၠ޸ % I/O . =öN, 8¬̵ :%, jᎵළ޻ unsigned long base_addr; f end - start n% s¿˷|%Uì.ܖ ,ၠූ end öN n. râ¿ , Oh£B ˷|, mem öNjYZ˷|ȩn, rmem öNj޻[˷|ȩn . rmem öNᎵ öNÝqၠȩn%˩p ˷|%cf, q: flၠූÎ FÀ޻Ä, q¼ j޻ = flags öN <= ȉ»y, V:%ȉɢ . IFF_ ̵xF "interface flags". q¼$ij˷5౧ $i(:K/)޻ int features; unsigned short flags; ., ҅t^_%{޻YZO̵ . snull ၠȩnÃÄ޻ Ꮅ %f ළ, ݗk «o¢ ּ ׷T҅ÛÜ ̤ dev_addr. {nÎ uv ࡙ s?ª, Ꮅ%LØ£޻ %ɢ. ၠ , h, ؿ]f`aǎၠ ID ), ֭j 6 = 0xff ༐ඪö; ether_setup Zޮö࡙ s%{{ (MAC) <ၠ { . fළ 6 = ༐( % ޻ unsigned char dev_addr[MAX_ADDR_LEN]; unsigned char broadcast[MAX_ADDR_LEN]; unsigned char addr_len; %ɢ ARPHRD_ETHER, j ether_setup ၠූ% ɢ. ၒ# %#!aǎ . ࡙ÜÝ Ǯ % { . f ළ޻% {#!. = type öNj ARP nÎ ̓a޻޻ unsigned short type; , plip q<=Ȋ¼% ì). >?˷| ( Ҕfළ޻ plip ȩn 10 Îርˑ ၠYZ Ƒf ޮ%É U. = ɢj ether_setup ၠූy 1000, Æ Ȗfæ҅ . â8 , unsigned long tx_queue_len; (ETH_DATA_LEN). =ɢn ifconfig æ±. ݗk «ᇗ. fළq<= 1500 ༐% MTU É« ᇗΡˍ (MTU). =ö N ළ ӀnȒᎵ unsigned mtu; hard_header_len ɢ 14 (ETH_HLEN). ǎf ළ޻ . ٫ {8 , ҵ , BYZݗk̵ : IP O̵% ༐U, Èv%Λၖ unsigned short hard_header_len; <¬% , Æ , ȖWt JIɢ:%öN: 89ၠ° ׶ǎ¼ #vƑ%<#. 8kȖ% ø %ၠූÄ଄஧ළ޻ void tr_setup(struct net_device *dev); %öN (HIPPI) %rǒ Ꮅ~¢<=r§Ë޻ void hippi_setup(struct net_device *dev); (FDDI) ළ%޻޻ޖቱූ<= {ඖ 9}U void fddi_setup(struct net_device *dev); f{Pሓၠ%ö N vo id fc_setup(struct net_device *dev); ၠූ<= LocalTalk ၠ%öN void ltalk_setup(struct net_device *dev); Ǿ%TU V¸ .ᇗª<¼#/0;'078309309*'3'9fȩn#Ǿ09W07*809:5 %պTUfළ޻% ¼> , ȖÛ Ҕ+Ҕ நY ¥/¦§ I/O( "Y¥/¦§ "<༐Ƒ./8ȑȖּ ׷ၠූ NETIF_F_SG. ׷ fYZ<=ݗk , ҅jr=¬%˷| ࢍඪö,2 =$ i5 Y¥/¦§ I/O %ȩn . 8kȖ%޻ NETIF_F_FRAGLIST NETIF_F_SG <¼¼` ; v%ҵᄇª, BÌÍ. ҈M%¤0 : £q%`v { . TUၠූÎ "˷5 ˫ǎàȑ%޻ cd net_device %` öNjᎵ %{Q . =ၠLM%?à "ඪ"<༐ƑၚK. Ȓ. â8, ׷ IFF_PROMISC Bූ ȉ ÈÅ ȉ, set_multicast_list ؿ]P "s¿ set_multicast_list Ƒ¡G Ȓ Î Í ּ $ i% å æ , ҅ ؿ ] W t Ö Ë _¼ æ , set_multicas t_list L M B m n . 8kᎵ ׷<=µַæ ± IFF_UP, open È stop ၠLMBmn . Ö , ׷ IFF_UP Èàȑv%$ iå . | ܝ Linux Ƒn=$ i, y BSD ˮ IFF_NOTRAILERS Wtݫؽ IFF_RUNNING. ; ˷5Þ Pn҅ . 89ළᎵ §ÊË . ҅89 y< BSD ˮ =$ i ª޻ IFF_RUNNING %$± . ̵˷5ࣣqȩn .ၠූ , ª޻ =$i, jᎵ IFF_DYNAMIC %lm. `v, ˷5<=Ʊȩn 2 =$i. ÇÐ࡙ k IFF_AUTOMEDIA ၠූ, ၠ^ â8, Ӈ vwඥ (UTP) < ¬ᇄfළ. 8 ; ސ ¼$ iªၠfß= lm #!p IFF_AUTOMEDIA IFF_PORTSEL Wt "ሓ ҅. Ꮅ¼$ij>ᇇxyȩn. ޻ IFF_SLAVE IFF_MASTER Ì?%. ඪ$i,- À:%"ඪ"<༐Ƒn̤. IFF_MULTICAST ූȉ. IFF_ALLMULTI Ꮅ q % ඪ ݗ k . ˷ 5 Ö Ë ඪ i j l ၠ ූ ҅ , ̵ ܖ ] ޻ = $ i " ޻ IFF_ALLMULTI ÜÝඪ, ؿ]flZ] =$i. Ȗ%Ꮅ $ඪ YZ. ether_setup ၠූ IFF_MULTICAST @A , ࡚8 kၠූ=$ iÎFG ޻ Ꮅ IFF_MULTICAST qݗk.ܖ%YZlm¿Q ¿ၠූ = ×ØÎ| G޻ {%ݗk . ݗk c޸, â8 tcpdump, ޻֭ ݗk< 1޻̤޻ ȩn {Q Î~ၣ҅Ì޻[=$ iၠූ (jළ xy )ÎਢS= Ȓ . @A , fළ޻ IFF_PROMISC ÊË , ࡚҅ၠූ=$ i.̕ڣ% snull ࣣq ARP . ٫ %ȑqn WtÊË ARP, ҅Ì Hͪh%ऋì δࣣqàÖË ARP. â8 , ޻=³À޻ IFF_NOARP ၠූ҅. Ꮅ ၠූÈ, ql, j ifconfig. â8 , plip < PPP ޻̤<=i. ҅jᎵ=$i³À޻ IFF_POINTOPOINT .z޻ Ƒၠූ. ˷5ú IFF_LOOPBACK , fx( ඥ lo ¤ѤȒy<=`޻=$ iּ׷Ì஧ IFF_LOOPBACK c˫ J=$i.ܣ µַfnÎ nÎ ARP Kn ҈ö ÀÆ ݗkYZ̵s ; {%TU. fළၠȩn% @A%TUȩn int (*rebuild_header)(struct sk_buff *skb); ether_setup =öNI ɢ. % @ATU,٫ඪ ²ö<= 0%`aǎၠ% {. eth_header f ළ# !޻ %҅¢»ϤU nO̵G̤%ঠ<% {Î;ú{%TU( hard_start_xmit ̵mn ). ҅%JȒ TȒy unsigned len); int (*hard_header) (struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, Ô|,-À:l ±. <= socket Ô|u ( sk_buff ) cd . socketq)ܖ>fݗk%YZ%LM . ҈M%ݗk(Λၖ int (*hard_start_xmit) (struct sk_buff *skb, struct net_device *dev); c lÖË%Ȓ .ܣɶࡘ׷ ҅B ˫J. =TUּ׷٤Å . ޻ɶࡘ޻ int (*stop)(struct net_device *dev); c{, ÖËàȑv%Ȗ%ၠtࢨ%ၠූ .ܣ ,( ,, IRQ, DMA c . open LMּ ׷F˸҅Wt%àȑ>? პঠ( I/Oܣ B . àȑl V ifconfig ਢS ҅, ޻c ޻ܣ ;(int (*open)(struct net_device *dev ,LM ¸Ç%LM Ҕநßrs % ¯' tࢨ%ͩ %,LMVቅ ¼ؿW% $ȩn޻%ၠLM9y ඪ¸ ,%< Ç%ළ޻ %y09W07*809:5 ¢҅Zޮ0%LM &&&v% B q¼ȒfÈȒȒ ÖË%,༐ª $ළ޻ %< g=ළၠ ðÀȒ҅%TU Ꮅ< 8¬ 17.3.4. ၠ!" 8kȖ%ၠ$ÖË TCP 9ࢍYᇇ, ၠූ=$i. TSO <= ·è% rs `. NETIF_F_TSO ݗkȩȖ%ၠƽ( 6Ҕּ} ), ၠූ$ i NETIF_F_VLAN_CHALLENGED. . 8k VLAN ¼Ç./Ȗ% { 802.1q VLAN ݗk%ÜÝ. VLAN ÜÝ ᄇª,-%˷ NETIF_F_VLAN_CHALLENGED NETIF_F_HW_VLAN_FILTER NETIF_F_HW_VLAN_RX NETIF_F_HW_VLAN_TX kȊ ˷|9ቱ. %ݗ q ¢Ȗ%Ꮅܖ ,ၠූ=$ i, 8kȖ%ၠ $r ˷|ÖË DMA. ࣣq=$ i NETIF_F_HIGHDMA ³ࣣq°( 1 ª ) B«, ࣣqؿtùᏄ҅. 8kȖ%{^_ ùᏄ, ၠූ NETIF_F_HW_CWSUM. ၠූ=$i, snull Ʊၠූ; yݗkÌPQ>?˷|«Z, ҅Î ᎵNETIF_F_NO_CSUM. ஧ ©tࢨ ùᏄ <, ҵၠූf ùᏄ IP ݗkÆ v%Ë , ҵၠූ NETIF_F_IP_CSUM. 8k=޻ äc>?%ݗkÖËùᏄ . 8kȖ%޻q%PQ=޻ܖ¼>¢¼$i "˷5, Wt NETIF_F_HW_CSUM NETIF_F_NO_CSUM NETIF_F_IP_CSUM l޻0ݗk .¬§ޖ˷5Û¨Q<=9 %("%ඥ")%ݗkÎ၏ ¡ùᏄ<, ҅Ʊ ÛÜU Ø. Äj , 8k؀> F˷5Ȗ%ၠÖËY¥/¦§ I/O Ȓ, 8kࣣ҅q¬l _¼ùᏄ < . Ꮅ Ä9 ࢍ%ݗk ; 2.6 ƑÌq ஧ $NETIF_F_FRAGLIST FÀȖ%޻ .( .ɢ %. fළၠPȩn eth_header_parse skb Ƒ%ݗkƑ ݣG ঠ , ÛÜ ̤ haddr %Ô|u . TU%. hard_header_parse LM£ int (*hard_header_parse) (struct sk_buff *skb, unsigned char *haddr); eth_header_cache_update. hh_cache cdƑ%%%LM . f ළ ၠ ȩ n Í ּ < = ± Ƒ , int (*header_cache_update) (struct hh_cache *hh, struct net_device *dev, unsigned char *haddr); fȩn@A% eth_header_cache Ҕந. header_cache BmnÎ dˏ hh_cache cd , ȩn<= ARP Rࢨ%c k. rƦø8#Ǿf ළ%Ꮅ int (*header_cache) (struct neighbour *neigh, struct hh_cache *hh); ˬᄙ. snull q=TU%<=× s, 8kȖq .ڣ ׷ð À҅%^_%TU ; û¹, @A%° Tõ ּ҅ ,ڣ Wt <¼`z%õ Ȓ%TU . 8kn%æ± MTU lᎵ %É« ᇗΡˍ (MTU) æ±l׷޻ int (*change_mtu)(struct net_device *dev, int new_mtu); ၠූ{ MAC . ּ ׷҅% open LMƑ^ dev ->dev_addr ࣣqÊËlȒ{ õ. ȩn eth_mac_addr %Ꮅ޻ ̤ dev ->dev_addr, Ì ȩn@A% eth_mac_adr Ҕந( deivers/net/net_init.c). eth_mac_addr ÌÛÜ ¸,ÜÝ= . 67%ÜÝæ ±҅% {% , f Ҕந=TU . Þß޻8k޻ int (*set_mac_address)(struct net_device *dev, void *addr); ඪ"<༐, fè<=âѤ Ҕந." +ڣ׷ၠ% ඪFæ±<׷$iæ±lmn%LM. K void (*set_multicast_list)(struct net_device *dev); % 3 .Wtàȑ`aǎ޻dƑ%ö NÈy NULL, 8k޻ % ioctl 3. ( ¼ 3 %Ҕந "a ioclt 3 "<༐Ƒ./)ּ% net_device cÄ`aǎ޻ int (*do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); µ5å <ȩnළ%˷5m. ¿%õ{%TU. ҅nǎ`z%˷5Ƒ%ළàͫ , â8 ú ޻ tࢨᎵ , ̕ڣ%Ƒ ˫ J void (*poll_controller)(struct net_device *dev); N) "޻[Ƒ ÔK"<༐Ƒ·è. , Ƒ˫Jh. NAPI ( fè weight ö%LM, nÎ·×ØȒ޻ jּ NAPI %Ꮅ int (*poll)(struct net_device *dev; int *quota); int weight; )%ၠȒ Ç%: Ҕந=LM . < ໘Wt ̤lȩn . நx {࡙%Ꮅࣣq ޸set_config Îæ ±. ó j>?౧Ä N޻ . ၠ% I/O <Ƒ - fÊËlȩn%ˣ ቱූ. =LM ቱූᎵæ±޻ int (*set_config)(struct net_device *dev, struct ifmap *map); ༐Ƒl±.>" ٫ ÊËl. snull %<=âѤҔந"?၏ mn=LM. â8, ׷ ifconfig È netstat -i ,%?၏٫àȑlV׷<=ּnµַWt!G޻ struct net_device_stats *(*get_stats)(struct net_device *dev); ٤ÅݗkYZ .§Ä= D2B´ȋ . ּ҅׷ jළxy<=ݗkYZࣣq<=0Ä%lp˷҈ölmn%LM, â<=ƑÈ޻ void (*tx_timeout)(struct net_device *dev); .٫%@ ARP ÜÝxyÎdˏ ݗk ¸ TUÎ=> 5˷ޖYZU %YZˋ ҅޻ YZݗk <Ä҅3޻ 4503LMּ ׷Ʊ f ළ{%¿*& ƖÀ<={- %%¿*& :Zޮ ҅ ҅Ì ȩn<=y4503 ᆿ{޻ 83:{޻h4503lÛṲ̈ၠ f? პঠ8945 ˫J޻ ?პঠ§¨"޻ 4 503Rࢨàȑ҅Wt%> ¬%àͫ Ꮅ< ÛÖË ß3 ̵yࡘ%Ҕ+xy Ꮅ >ɢ öͩl§¨ªíl. =ၠLM . n *&!§¨ 8945 LMBm&½$ÎZ]ñ$ñ $ñ ˫J'1.431'Ö ȩn'4.9Ǿ׷޻ & ½$ Æ yၠmn4503LM$ñ $ñÀ:%3'4.9 §¨ ˷5Ҕந҅ =àͫ ùúǎၠ% TUBmn ࣣqᎵ#àȑõ$ñ $ñ̵yࡘ'4.9 c ޻ܣ,Ö8Î $09ñ39071,.0 &½$$4.»09ñ 43974$ñ $ñ *&!ȉPQ'4.9%ñ ,Ö1 ޻h҅ၠූ/0; $09ñ3907 1,.0//7088ÎZޮ #$4.»09ñ 43974$ñ $ñ'4.9 జ<҅PQ Zޮ <= ҅ =àͫ׷'1.431'Ö nÎ¢޻ ּ'1.431'Ö 3cÈ˫J<=޻ܣ ˷5 c҅§9ቱ<=¢҅ܣ [$ܽᇇݗk̵Æ ˷5ؿ޻޻l޸ ͪᇇlÈ˷5f× Ꮅ% &˫$#ܣ . n h҅ cd net_device Ƒq67%öN, Æ ළᎵ ּ׷æ±¼öN%ɢ. xmit_lock % CPU-. Ꮅ % hard_start_xmit T U ß = ¬ l m n . x mit_lock_owner ! Û xmit_lock n Î ር ˑ Ꮅ int xmit_lock_owner; spinlock_t xmit_lock; ÄඪYZ%ö N. mc_count mc_list Ƒ%U . ß¼༐+"ඪ"<༐. int mc_count; struct dev_mc_list *mc_list; netdev_priv x(. , =ö Nj alloc_netdev ၠූ, ּ׷1޻| G; ȩn filp ->private_data %È . ந x%Ꮅ void *priv; % tx_timeout TU. ළӀၒ y<=«ZᄇlY v̵ּ ׷Q@%É)lp (V jiffy ၏¡), mnᎵ int watchdog_timeo; ּ ׷һìéݖ=öNf TÎȩn . YZͪ´. last_rx ̵ࣣqn̤, Æ ᎵළѤ>?nÎ޸ ¼ɢ, ׷cfYZ<[̤<=ݗkl. trans_start ɢB >? 9v ~|<= jiffy ɢ%ö N. 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W0.»'9 " 309'1*70.0';0*8» -8»- " ,'39,'389,98" 35,.»09866 57'; 89,987**5 ,.»098 66 57'; 89,987**-O9086 5»9 /,9,03 83: *700,80*-:11075»9 < "ñ10574.0880/, 5,.»0980 Á70/430 909W0»0730,3/7003,-0'398" "-:/Ö09 35,.»098 /0; 6:49, 3 5,.»098 '1 57'; 7**6:0:0T 309'1*7**.4 25090/0; 83: *7**'398/0; 709:73 < " 0.4:/3Á9 574.0880;07O9W'3Ö" 709:73 ǎ&'3:* ˷5ළѤ>?%5ؽநl±=cd%stö N<Ȓ҅%TUcd = W@Ƨ% 8»*-:11 cd%K¼./%D2ந ॕ. ̤ 89˫ǎළ޻ $4.=09 3> ò%±ܖ 8¬ၠcdƑ׷̵ᇇ*h ҅nǎ '39309'1*.,77'07*4»897:.9309*/0;'.0"/0; <= MUTUƱ|¸ ٤Åऋì¨§ᇇ*Bú ±lâ8Ъl#! <Äቱ҈öÅȉ҅^ y Ʊmn309' 1*.,77'07 *411 ׷ÖË %ቱූæ <¼ᎵÎl ּ׷mn309'1*.,77'07*43׷ᇇ* ̤҅%<=ၠᇇ*âּ҅׷mn309'1*.,77'07*411 ÎP"˷5=æ± ú 8kȖ%Ꮅ ;4'/309'1* .,77'07*43897:.9309*/0;'.0"/0; ;4'/309'1* .,77'07*411897:.9309*/0;'.0"/0; Æ ȩn¼TU¸æ±=h fÀ Ꮅළၠ $ၠqᇇ *-| @A ළቱâ8 ඥ ¿<" ᇇ*- ׷<=n%+,<¸ᇇ* ޻c f ᇇ*|³À{|§389·èҔ+%ÃÄ ޻%ළ ܾ7 q<=ᇇ*h TU %nÎ«ᇰó٫ ළѤ>?Wt"ሓළ ޻%¿҅ r=Ꮅ ÐÃ% ࡚ ҅ hõ{%؉Í§¨҅Ǟሓ,>?Oh%ܣaޖ¸ළ ޻ ޻67895 ! ළҘ೜ǎ޻δǎ҅! 30>@ f3Ȗ%67ၠLM%mn§Ynú mÆ 54Ä¿B¬lmn LM°ßǎ<=ළѤ>?~ၣàȑ¢a%ၠ% 54 Äɢ Gq)%ݗkWt. 090Î˫J ·§¨.309'1*7**.4 25 ȩ޻[Ƒ mn q%ݗk ּ҅ ׷sܖÄ LM $¢a% ˷• 8k 54 • ݗkּ׷n309' 1*70.0';0 *8»- oǞ˷5 309'1*7* f 0' ÖW9yf ɢflZޮ ¢޻ <=g޻ [̤%ÉßݗkU 6:49,q޻ܖ£$&! -:/Ö09 ɢ ׷̵6:49, < "-:/Ö09 /0; ҅Ʊּ ׷fҔ+ [̤%ݗkUoû LMؿ] ሩ)Ç= Ƒ% ᇍ)È<=Éɢ 54 6:49,öN¢ªၠcd• -:/Ö09 ϤU <= ˋ« ¢˷5%ÉݗkU Æ q¼< ¸ *7*Ƒ+̤%<TU%Ƒ ؽ89 ˫ǎt; <=~Ýݗk% 8» - 89xy ;skb_frag_t shinfo(skb)->frags unsigned int shinfo(skb)->nr_frags; shinfo(struct sk_buff *skb); ÁØåæ pkt_type, y eth_type_trans y҅ . fළᎵ PACKET_OTHERHOST ( , =ݗk ¢%), PACKET_BROADCAST, È PACKET_MULTICAST. > ? ၠ ූ ҅ y PACKET_HOST ( ݗ k ¢ ^ _ % ), oZƑȩn%ݗk9# . Ꮅ unsigned char pkt_type; Öˣݗk¿ၠූ=öN, 8"ݗk޻[ "<༐Ƒ./%. =ݗk%ùᏄ<Ú. jᎵ unsigned char ip_summed; I/O, data_len öN%ɢy 0. data_len ݗk| EǎΡ=Ƒ%89%. ]%ȩnY ¥/¦§ , %ޖlen ݗkƑø8U unsigned int data_len; unsigned int len; |¦p skb ->end - skb->head, ׷̵ȩn%¦p skb->tail - skb->data . head <¼ ), tail q¤༐%c Ҽ, end Ó tail $̤ᇰ%É . ô҅%<=LM nÔ خhead Ó9 ቱ˷|% cf , data q ¤༐%cf (§¨ Ä . %ޖnÎ FݗkƑU unsigned char *end; unsigned char *tail; unsigned char *data; unsigned char *head; G .ܖÛ 1޻ၠූ skb ->mac.raw, 8¬"%fළ8"<༐ ළᎵ Ä, Æ %f >?ၠූÖˣݗk% mac . =à࡙ͫ j eth_type_trans FළᎵ %f| G%8#!. Wt ô TCP ݗk% ঠ<% , f skb->h.th Ƒܼ̤. ôk{Î ܼ̤ø8 8kȖ%Ꮅ 8 (â8 struct ethkr * ethernet). iӀ ළӀ8(â8 struct iphdr *iph); fè mac ᇗӀ8 (â8 , struct tcphdr *th); nh q« cd#!% . hޖ%^s %% . union Ƒ%_=ö N <=¬UÓݗkƑ union { /*... */} mac; union { /* ... */ } nh; union { /* ... */ } h; ޻[YZ=Ô|%ၠ struct net_device *dev; f%`v% 4ַª҅Wt| G% l±%ö N Ꮅ 17.10.1. 01%&23 Æ!G 12˷5 ঠy Þ ˫ǎ8ȑȩn¼öN? %q ң%f çǎcYÈ ̓ Ô|Ƒ, >?40.̤ޖÆßǎ҅Ýq%U n¦pUì . 8kᎵ%ޖfÔ|Ƒ ÆූU. int skb_tailroom(struct sk_buff *skb); __skb_push ¬҅ ú ¦p ûᄣ$. p . ¼TUnÎYZݗkO̵ ×ͪ<= {8. <<,¦ޖɢ ÓÓÓt; %U c Ҽ. . ݗk% cf̤ͪ× ޖoû skb->data len %TU. ҅3 skb_put Ǿ, ]U unsigned char *__skb_push(struct sk_buff *skb, int len); unsigned char *skb_push(struct sk_buff *skb, int len); 0Ô|, __skb_put AÚ = ú . ޖၒU È<=¬% . Ç=TU%uvǎ skb_put úf ޖmemcpy(skb_put(...), data, len) ÎÛÜ U n ɢ P Q f ȩ n . p ). Ꮅ ¦ ޖ ÓÓ Ó t ; % U҅ ,³ 1 ¬ ސ)skb->tail % ̵ < = ɢ ɢÔ|%c Ҽ, g=TU% .̤ޖ sk_buff cdƑ% tail < len öN; ҅nÎ HͪU unsigned char *__skb_put(struct sk_buff *skb, int len); unsigned char *skb_put(struct sk_buff *skb, int len); . ̕ڣ2 ó ¿kƑȩn dev_kfree_skb, Ƒ¿kƑȩn dev_kfree_skb_irq, È dev_kfree_skb_any àȑ ּ ׷ȩn<ó dev_kfree_skb %±ȏ: %Ƒ \ÆÔ|. kfree_ skb mnj˷5˷8ȩn. <=Ꮅ void dev_kfree_skb_any(struct sk_buff *skb); void dev_kfree_skb_irq(struct sk_buff *skb); void dev_kfree_skb(struct sk_buff *skb); void kfree_skb(struct sk_buff *skb); ҅ . t pnළӀOp% ì , Ꮅ¦ޖskb->data Op~È<¼¦p. =U dev_alloc_skb TU ȩn GFP_ATOMIC ìxsmn alloc_sk b %ý3LM, §¨ skb ->head < 9ቱ<=Ô|u . alloc_skb TU9ቱ<=Ô|§¨T skb->data < skb ->tail f ö skb->head. struct sk_buff *dev_alloc_skb(unsigned int len); struct sk_buff *alloc_skb(unsigned int len, int priority); Éqᄙ%r=¸ ßTUȒ<=84.»09Ô|TUÎȒ҅ ¨n࡙Ø޻ ȩn<= 8» *-:11 cd%ළᎵ 17.10.2. Ȓ$ǎ socket 6789 cdƑ )%ö N `vqᄙ. ҅nÎéݖÔ|F, Î?၏ socket £q%Ô|), . dƑqr=ö N, Æ 89ᄇª,B%ÌÍ. "Y¥/¦§ I/O" <༐Ƒ+Q nr_frags < frags. info"( 3¤ y҅fළ xy Ƒß= skb ÛÜ Ƒ˩p)ؿ]PQ shinfo ҋaÎ|G. =c Eǎ<=9 c%cdƑ , ҅˷|Ƒ R޻h skb. = "shared| ٫ jǎ% ύ, q¼ skb ;*W 0,/07897:.98»*-:11 "8»-897:.9309*/0;'.0"/0 '3983: %ҔநȒy<= %Ð%TU¸ 83: W,7/*W0,/07LM 8kȖ%ၠ ȩnP%{ÊË #!ȖWts '@A%/0; ÄළӀ8%ÎӍG8ȑ1޻ һ౧$ÆҔந<=౒Ρ#! ּసYvß% G ñ! ސñ! #!ݗkƱǞ æ±YZݗkƑ% ȩn#! yᎵ 83: Ƒ%âѤ xy ƱӐǎ<#%ළၠ83:c[ YZ #!ݗk% '5 £ȩnf ළ8Ƒ>ርˑÎ â8 5౒Ρ%ළ޻ ARP @?< .17.11.2 ڣqõܖ ?< ˤ˩%f ළxy &' ÈWt "ሓ =Qµ ࡙ fළᎵW,7/*W0,/07LMȩn #!·%ckÎ}ූݗk % y࡚ ˷5mnᎵළxy%ȒÈ ÁÌä˷56789"ሓÃÄ Ӏ8¼༐ ;< ᎵÎպ ;úݗk ᎵÄ Kn%¼༐§¨Ô|c k҅Wt޻ һ౧P˷5 /*W0,/07W,7/*W0,/07</0;*70-:' ¢/0; %ၠLM 09 W07*809:5 Zޮ࡙ ҵWtݫؽK̓ñ!&-ּǎ %IɢᎵ l࡙ 034503,//7* ,//7 </0; Ìt /0;ÎÜÝ #!ڣWt`v%õÄ§¨<=fළ޻ £Ê% #!j˷5Î౧#!:9'43!7494.4Ä Kn %PLM ȩn//7088 #084 17.11.1. :;ළȩ$ ARP '5fè %fළ8fළ8 â8 5%!#!#¸؀ڣ=:ӍG Á = D2%҈M./ ࡚ ̕ڣ % ¤Ƒǎ#fළ9Λၖq#Ǿ%D2Æ 8%<{ñ <ñ!&-c0Î ޻ fළP ၗ%<=qᄙ%L: 8ȑT 4D ҅. Wt nǎ rӀ ළ xy , Ꮅ ¡ܣ ҅ ˷5ar=67%Ȓnǎ socket Ô|%TU , Æ Ѥ kmap, ࡚Ȗ<òýßǎ<=. 8kȖؿ]£˷5Ƒ%<= %ඥ skb 1޻|G, ¼TUyȖò ýfè@òý҅ . ȩn<=ύ void kunmap_skb_frag(void *vaddr); void *kmap_skb_frag(skb_frag_t *frag); skb %జ<= % (j skb ->data h).. int skb_headlen(struct sk_buff *skb); <= ɢ , 8k= skb 9äyß=yY ¥/¦§ I/O.. int skb_is_nonlinear(struct sk_buff *skb); oH skb ->data; {8ȑ£Öˣݗk cf B͇ä. ˉ. ҅oû skb->len <°Wtȩn=TU , Æ y҈M Ꮅ .ޖ£ݗk%8@]U unsigned char *skb_pull(struct sk_buff *skb, int len); ˣQß /0 .༐ƑӍந=fርˑ ቅl> Ҕந%Knܖ. jrӀ%ළ xyâ8 309'5;,7 5 7, <=2,. 8»- 7,2,. 8»- 5»9*9O50< 8» -57494.4 ၠූöN8» - ׷ݗk ޻%<B[̤ ޻[TUּ ׷࡙ YZàȑ {8 <=Ìqñ!% ޻øç 8% Ì«ZΛၖ &- y ~ၣoǞ ùúǎ ঠ<%% <= ޻҅%{ Λၖ &-¢޻[>ޖoǞݗkU ּ }࡙ Ꮅ%¿*!*ñ! $#y ҅Ʊ9O50ϤUƑ޻[ ȉΛၖ&- ñ!â8 Λၖsv< { ٫%޻[^˷5%oǞ ӍG %ܖ*W0,/07Ҕந W,7/*W 0,/07 ၠLM j83:ርˑ«Z=f ළ8̕ڣ%@Pn '5 È83: <= ޻â8 5q٫jg =Λၖܖ %>ɢÛ &'È $ÙÚ=Ì ȩnfළҔந 89Ꮅܾ7kDƑ ݣG҅ È£`a «ZЪl% 8kȖWt"ሓ¼༐ Ȗ£˷5 ঠy ٫%˫88ȑnÎC ந./{Ést% P ၗΛၖ ٫ ¼>ÓÓ ôQ {8]%h 17.11.3. A:;ළC z{<=JȒƑ%#Ǿfළ% ޻ Ç= * ȩn*1. 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