adiahci: drive onlining, task file error (atapi) handling, missed interrupts, bios handoff, idle, cleanup
wait for the drives to become ready or missing in iaonline() and iaverify() to prevent nobootprompt= race. handle task file error status (this can happen for atapi) under some circumstances and would hang the io if not handled. preventively poll interrupts from the checkdrive kproc in case we loose interrupts (bad via machine). implement bios handoff procedure. make sure the port is idle before programming the port dma regios in configdrive(), do not start command processing on the port unless phylink has been established.front
cinap_lenrek
parent
9b6f0e2b3e
commit
f379992fcd
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@ -57,6 +57,12 @@ enum {
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Boh = 1<<0, /* bios/os handoff supported */
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};
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/* bios bits */
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enum {
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Bos = 1<<0,
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Oos = 1<<1,
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};
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/* emctl bits */
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enum {
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Pm = 1<<27, /* port multiplier support */
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@ -108,7 +114,7 @@ enum {
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IEM = Acpds|Atfes|Ahbds|Ahbfs|Ahbds|Aifs|Ainfs|Aprcs|Apcs|Adps|
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Aufs|Asdbs|Adss|Adhrs,
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Ifatal = Atfes|Ahbfs|Ahbds|Aifs,
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Ifatal = Ahbfs|Ahbds|Aifs,
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};
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/* serror bits */
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@ -16,10 +16,10 @@
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#include "../port/led.h"
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#pragma varargck type "T" int
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#define dprint(...) if(debug) print(__VA_ARGS__); else USED(debug)
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#define idprint(...) if(prid) print(__VA_ARGS__); else USED(prid)
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#define dprint(...) if(debug) iprint(__VA_ARGS__); else USED(debug)
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#define idprint(...) if(prid) print(__VA_ARGS__); else USED(prid)
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#define aprint(...) if(datapi) print(__VA_ARGS__); else USED(datapi)
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#define ledprint(...) if(dled) print(__VA_ARGS__); else USED(dled)
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#define ledprint(...) if(dled) print(__VA_ARGS__); else USED(dled)
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#define Pciwaddrh(a) 0
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#define Tname(c) tname[(c)->type]
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#define Ticks MACHP(0)->ticks
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@ -164,6 +164,8 @@ struct Ctlr {
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Drive rawdrive[NCtlrdrv];
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Drive* drive[NCtlrdrv];
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int ndrive;
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uint missirq;
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};
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static Ctlr iactlr[NCtlr];
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@ -343,7 +345,7 @@ settxmode(Aportc *pc, uchar f)
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static void
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asleep(int ms)
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{
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if(up == nil)
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if(up == nil || !islo())
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delay(ms);
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else
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esleep(ms);
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@ -363,6 +365,8 @@ ahciportreset(Aportc *c, uint mode)
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break;
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asleep(25);
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}
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if((*cmd & Apwr) != Apwr)
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*cmd |= Apwr;
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p->sctl = 3*Aipm | 0*Aspd | Adet;
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delay(1);
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p->sctl = 3*Aipm | mode*Aspd;
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@ -379,7 +383,7 @@ ahciflushcache(Aportc *pc)
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mkalist(pc->m, Lwrite, 0, 0);
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if(ahciwait(pc, 60000) == -1 || pc->p->task & (1|32)){
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dprint("ahciflushcache fail %lux\n", pc->p->task);
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dprint("ahciflushcache fail [task %lux]\n", pc->p->task);
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// preg(pc->m->fis.r, 20);
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return -1;
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}
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@ -456,7 +460,7 @@ stop:
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return -1;
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stop1:
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/* extra check */
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dprint("ahci: clo clear %lux\n", a->task);
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dprint("ahci: clo clear [task %lux]\n", a->task);
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if(a->task & ASbsy)
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return -1;
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*p |= Afre | Ast;
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@ -577,16 +581,18 @@ static void
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ahciwakeup(Aportc *c, uint mode)
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{
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ushort s;
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Aport *p;
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s = c->p->sstatus;
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if((s & Isleepy) == 0)
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p = c->p;
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s = p->sstatus;
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if((s & Isleepy) != 0)
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return;
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if((s & Smask) != Spresent){
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print("ahci: slumbering drive missing %.3ux\n", s);
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dprint("ahci: slumbering drive missing [ss %.3ux]\n", s);
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return;
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}
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ahciportreset(c, mode);
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// iprint("ahci: wake %.3ux -> %.3lux\n", s, c->p->sstatus);
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dprint("ahci: wake %.3ux -> %.3lux\n", s, c->p->sstatus);
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}
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static int
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@ -594,6 +600,7 @@ ahciconfigdrive(Ahba *h, Aportc *c, int mode)
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{
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Aportm *m;
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Aport *p;
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int i;
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p = c->p;
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m = c->m;
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@ -604,12 +611,16 @@ ahciconfigdrive(Ahba *h, Aportc *c, int mode)
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m->ctab = malign(sizeof *m->ctab, 128);
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}
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if(ahciidle(p) == -1){
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dprint("ahci: port not idle\n");
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return -1;
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}
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p->list = PCIWADDR(m->list);
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p->listhi = Pciwaddrh(m->list);
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p->fis = PCIWADDR(m->fis.base);
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p->fishi = Pciwaddrh(m->fis.base);
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dprint("ahci: configdrive cmd=%lux sstatus=%lux\n", p->cmd, p->sstatus);
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p->cmd |= Afre;
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if((p->cmd & Apwr) != Apwr)
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@ -617,7 +628,7 @@ ahciconfigdrive(Ahba *h, Aportc *c, int mode)
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if((h->cap & Hss) != 0){
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dprint("ahci: spin up ... [%.3lux]\n", p->sstatus);
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for(int i = 0; i < 1400; i += 50){
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for(i = 0; i < 1400; i += 50){
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if((p->sstatus & Sbist) != 0)
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break;
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if((p->sstatus & Sphylink) == Sphylink)
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@ -625,17 +636,22 @@ ahciconfigdrive(Ahba *h, Aportc *c, int mode)
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asleep(50);
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}
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}
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p->serror = SerrAll;
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if((p->sstatus & SSmask) == (Isleepy | Spresent))
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ahciwakeup(c, mode);
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p->serror = SerrAll;
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p->ie = IEM;
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/* we will get called again once phylink has been established */
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if((p->sstatus & Sphylink) != Sphylink)
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return 0;
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/* disable power managment sequence from book. */
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p->sctl = 3*Aipm | mode*Aspd | 0*Adet;
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p->cmd &= ~Aalpe;
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p->cmd |= Ast;
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p->ie = IEM;
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p->cmd |= Afre | Ast;
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return 0;
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}
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@ -678,14 +694,26 @@ ahciconf(Ctlr *c)
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if((u & Ham) == 0)
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h->ghc |= Hae;
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// print("#S/sd%c: ahci %s port %#p: sss %d ncs %d coal %d "
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// "mport %d led %d clo %d ems %d\n",
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// c->sdev->idno, Tname(c), h,
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// (u>>27) & 1, (u>>8) & 0x1f, (u>>7) & 1, u & 0x1f, (u>>25) & 1,
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// (u>>24) & 1, (u>>6) & 1);
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return countbits(h->pi);
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}
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static int
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ahcihandoff(Ahba *h)
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{
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int wait;
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if((h->cap2 & Boh) == 0)
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return 0;
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h->bios |= Oos;
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for(wait = 0; wait < 2000; wait += 100){
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if((h->bios & Bos) == 0)
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return 0;
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delay(100);
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}
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iprint("ahci: bios handoff timed out\n");
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return -1;
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}
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static int
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ahcihbareset(Ahba *h)
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{
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@ -721,10 +749,8 @@ identify(Drive *d)
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id = d->info;
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s = ahciidentify(&d->portc, id, &d->secsize, dnam(d));
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if(s == -1){
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d->state = Derror;
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if(s == -1)
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return -1;
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}
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osectors = d->sectors;
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memmove(oserial, d->serial, sizeof d->serial);
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@ -790,8 +816,13 @@ updatedrive(Drive *d)
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if(p->ci == 0){
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f |= Fdone;
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pr = 0;
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}else if(cause & Adps)
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}else if(cause & Adps){
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pr = 0;
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}else if(cause & Atfes){
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f |= Ferror;
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ewake = 1;
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pr = 0;
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}
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if(cause & Ifatal){
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ewake = 1;
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dprint("%s: fatal\n", dnam(d));
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@ -834,10 +865,10 @@ updatedrive(Drive *d)
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d->state = Doffline;
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break;
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}
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dprint("%s: %s → %s [Apcrs] %.3lux\n", dnam(d), diskstates[s0],
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diskstates[d->state], p->sstatus);
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dprint("%s: updatedrive: %s → %s [ss %.3lux]\n",
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dnam(d), diskstates[s0], diskstates[d->state], p->sstatus);
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if(s0 == Dready && d->state != Dready)
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idprint("%s: pulled\n", dnam(d));
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dprint("%s: pulled\n", dnam(d));
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if(d->state != Dready)
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f |= Ferror;
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if(d->state != Dready || p->ci)
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@ -854,21 +885,31 @@ updatedrive(Drive *d)
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}
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static void
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pstatus(Drive *d, ulong s)
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dstatus(Drive *d, int s)
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{
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/*
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* bogus code because the first interrupt is currently dropped.
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* likely my fault. serror is maybe cleared at the wrong time.
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*/
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switch(s){
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default:
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print("%s: pstatus: bad status %.3lux\n", dnam(d), s);
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ilock(d);
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d->state = s;
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iunlock(d);
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}
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static void
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configdrive(Drive *d)
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{
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if(ahciconfigdrive(d->ctlr->hba, &d->portc, d->mode) == -1){
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dstatus(d, Dportreset);
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return;
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}
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ilock(d);
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switch(d->port->sstatus & Smask){
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case Smissing:
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d->state = Dmissing;
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break;
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case Spresent:
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break;
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case Sphylink:
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if(d->state == Dready)
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break;
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d->wait = 0;
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d->state = Dnew;
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break;
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@ -876,17 +917,7 @@ pstatus(Drive *d, ulong s)
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d->state = Doffline;
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break;
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}
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}
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static int
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configdrive(Drive *d)
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{
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if(ahciconfigdrive(d->ctlr->hba, &d->portc, d->mode) == -1)
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return -1;
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ilock(d);
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pstatus(d, d->port->sstatus & Smask);
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iunlock(d);
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return 0;
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}
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static void
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@ -899,36 +930,27 @@ resetdisk(Drive *d)
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det = p->sctl & 7;
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stat = p->sstatus & Smask;
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state = (p->cmd>>28) & 0xf;
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dprint("%s: resetdisk: icc %ux det %.3ux sdet %.3ux\n", dnam(d), state, det, stat);
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dprint("%s: resetdisk [icc %ux; det %.3ux; sdet %.3ux]\n", dnam(d), state, det, stat);
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ilock(d);
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state = d->state;
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if(d->state != Dready || d->state != Dnew)
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if(d->state != Dready && d->state != Dnew)
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d->portm.flag |= Ferror;
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if(stat != Sphylink)
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d->state = Dportreset;
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else
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d->state = Dreset;
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clearci(p); /* satisfy sleep condition. */
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wakeup(&d->portm);
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d->state = Derror;
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iunlock(d);
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if(stat != Sphylink){
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ilock(d);
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d->state = Dportreset;
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iunlock(d);
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if(stat != Sphylink)
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return;
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}
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qlock(&d->portm);
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if(p->cmd&Ast && ahciswreset(&d->portc) == -1){
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ilock(d);
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d->state = Dportreset; /* get a bigger stick. */
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iunlock(d);
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}else{
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ilock(d);
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d->state = Dmissing;
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iunlock(d);
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if(p->cmd&Ast && ahciswreset(&d->portc) == -1)
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dstatus(d, Dportreset); /* get a bigger stick. */
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else
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configdrive(d);
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}
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dprint("%s: resetdisk: %s → %s\n", dnam(d), diskstates[state], diskstates[d->state]);
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qunlock(&d->portm);
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}
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@ -953,15 +975,12 @@ newdrive(Drive *d)
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goto lose;
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}
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if(m->feat & Dpower && setfeatures(c, 0x85, 3*1000) == -1){
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dprint("%s: can't disable apm\n", dnam(d));
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m->feat &= ~Dpower;
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if(ahcirecover(c) == -1)
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goto lose;
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}
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ilock(d);
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d->state = Dready;
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iunlock(d);
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dstatus(d, Dready);
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qunlock(c->m);
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s = "";
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@ -974,9 +993,7 @@ newdrive(Drive *d)
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lose:
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idprint("%s: can't be initialized\n", dnam(d));
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ilock(d);
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d->state = Dnull;
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iunlock(d);
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dstatus(d, Dnull);
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qunlock(c->m);
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return -1;
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}
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@ -993,29 +1010,23 @@ hangck(Drive *d)
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{
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if((d->portm.feat & Datapi) == 0 && d->active &&
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d->totick != 0 && (long)(Ticks - d->totick) > 0){
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dprint("%s: drive hung; resetting [%lux] ci %lux\n",
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dnam(d), d->port->task, d->port->ci);
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dprint("%s: drive hung [task %lux; ci %lux; serr %lux]\n",
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dnam(d), d->port->task, d->port->ci, d->port->serror);
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d->state = Dreset;
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}
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}
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static ushort olds[NCtlr*NCtlrdrv];
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static int
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static void
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doportreset(Drive *d)
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{
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int i;
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i = -1;
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qlock(&d->portm);
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if(ahciportreset(&d->portc, d->mode) == -1)
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dprint("ahci: ahciportreset fails\n");
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else
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i = 0;
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ahciportreset(&d->portc, d->mode);
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qunlock(&d->portm);
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dprint("ahci: portreset → %s [task %.4lux ss %.3lux]\n",
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dprint("ahci: portreset: %s [task %lux; ss %.3lux]\n",
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diskstates[d->state], d->port->task, d->port->sstatus);
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return i;
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}
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/* drive must be locked */
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@ -1041,11 +1052,18 @@ maxmode(Ctlr *c)
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return (c->hba->cap & 0xf*Hiss)/Hiss;
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}
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static void iainterrupt(Ureg*, void *);
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static void
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checkdrive(Drive *d, int i)
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{
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ushort s, sig;
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if(d->ctlr->enabled == 0)
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return;
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if(d->driveno == 0)
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iainterrupt(0, d->ctlr); /* check for missed irq's */
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ilock(d);
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s = d->port->sstatus;
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if(s)
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@ -1093,8 +1111,8 @@ reset:
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if(d->unit == nil)
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break;
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if((++d->wait&Midwait) == 0){
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dprint("%s: slow reset %.3ux task=%lux; %d\n",
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dnam(d), s, d->port->task, d->wait);
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dprint("%s: slow reset [task %lux; ss %.3ux; wait %d]\n",
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dnam(d), d->port->task, s, d->wait);
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goto reset;
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}
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s = (uchar)d->port->task;
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@ -1129,7 +1147,7 @@ portreset:
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d->portm.flag |= Ferror;
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clearci(d->port);
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wakeup(&d->portm);
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if((s & Smask) == 0){
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if((s & Smask) == Smissing){
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d->state = Dmissing;
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break;
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}
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@ -1155,7 +1173,7 @@ satakproc(void*)
|
|||
}
|
||||
|
||||
static void
|
||||
iainterrupt(Ureg*, void *a)
|
||||
iainterrupt(Ureg *u, void *a)
|
||||
{
|
||||
int i;
|
||||
ulong cause, m;
|
||||
|
|
@ -1177,6 +1195,8 @@ iainterrupt(Ureg*, void *a)
|
|||
c->hba->isr = m;
|
||||
iunlock(d);
|
||||
}
|
||||
if(u == 0 && i > 0)
|
||||
c->missirq++;
|
||||
iunlock(c);
|
||||
}
|
||||
|
||||
|
|
@ -1403,6 +1423,29 @@ ledkproc(void*)
|
|||
}
|
||||
}
|
||||
|
||||
static int
|
||||
waitready(Drive *d)
|
||||
{
|
||||
ulong s, i, δ;
|
||||
|
||||
for(i = 0; i < 15000; i += 250){
|
||||
if(d->state == Dreset || d->state == Dportreset || d->state == Dnew)
|
||||
return 1;
|
||||
δ = Ticks - d->lastseen;
|
||||
if(d->state == Dnull || δ > 10*1000)
|
||||
return -1;
|
||||
s = d->port->sstatus;
|
||||
if((s & Imask) == 0 && δ > 1500)
|
||||
return -1;
|
||||
if(d->state == Dready && (s & Smask) == Sphylink)
|
||||
return 0;
|
||||
esleep(250);
|
||||
}
|
||||
print("%s: not responding; offline\n", dnam(d));
|
||||
dstatus(d, Doffline);
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
iaverify(SDunit *u)
|
||||
{
|
||||
|
|
@ -1420,11 +1463,52 @@ iaverify(SDunit *u)
|
|||
}
|
||||
iunlock(d);
|
||||
iunlock(c);
|
||||
|
||||
checkdrive(d, d->driveno); /* c->d0 + d->driveno */
|
||||
scsiverify(u);
|
||||
|
||||
while(waitready(d) == 1)
|
||||
esleep(1);
|
||||
|
||||
if(d->portm.feat & Datapi)
|
||||
scsiverify(u);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
iaonline(SDunit *u)
|
||||
{
|
||||
int r;
|
||||
Ctlr *c;
|
||||
Drive *d;
|
||||
|
||||
c = u->dev->ctlr;
|
||||
d = c->drive[u->subno];
|
||||
|
||||
while(waitready(d) == 1)
|
||||
esleep(1);
|
||||
|
||||
ilock(d);
|
||||
if(d->portm.feat & Datapi){
|
||||
d->drivechange = 0;
|
||||
iunlock(d);
|
||||
return scsionline(u);
|
||||
}
|
||||
r = 0;
|
||||
if(d->drivechange){
|
||||
d->drivechange = 0;
|
||||
r = 2;
|
||||
}else if(d->state == Dready)
|
||||
r = 1;
|
||||
if(r){
|
||||
u->sectors = d->sectors;
|
||||
u->secsize = d->secsize;
|
||||
}
|
||||
iunlock(d);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int
|
||||
iaenable(SDev *s)
|
||||
{
|
||||
|
|
@ -1468,35 +1552,6 @@ iadisable(SDev *s)
|
|||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
iaonline(SDunit *u)
|
||||
{
|
||||
int r;
|
||||
Ctlr *c;
|
||||
Drive *d;
|
||||
|
||||
c = u->dev->ctlr;
|
||||
d = c->drive[u->subno];
|
||||
ilock(d);
|
||||
if(d->portm.feat & Datapi){
|
||||
d->drivechange = 0;
|
||||
iunlock(d);
|
||||
return scsionline(u);
|
||||
}
|
||||
r = 0;
|
||||
if(d->drivechange){
|
||||
d->drivechange = 0;
|
||||
r = 2;
|
||||
}else if(d->state == Dready)
|
||||
r = 1;
|
||||
if(r){
|
||||
u->sectors = d->sectors;
|
||||
u->secsize = d->secsize;
|
||||
}
|
||||
iunlock(d);
|
||||
return r;
|
||||
}
|
||||
|
||||
static Alist*
|
||||
ahcibuild(Aportm *m, int rw, void *data, uint n, vlong lba)
|
||||
{
|
||||
|
|
@ -1558,34 +1613,6 @@ ahcibuildfis(Aportm *m, SDreq *r, void *data, uint n)
|
|||
return l;
|
||||
}
|
||||
|
||||
static int
|
||||
waitready(Drive *d)
|
||||
{
|
||||
ulong s, i, δ;
|
||||
|
||||
for(i = 0; i < 15000; i += 250){
|
||||
if(d->state == Dreset || d->state == Dportreset ||
|
||||
d->state == Dnew)
|
||||
return 1;
|
||||
δ = Ticks - d->lastseen;
|
||||
if(d->state == Dnull || δ > 10*1000)
|
||||
return -1;
|
||||
ilock(d);
|
||||
s = d->port->sstatus;
|
||||
iunlock(d);
|
||||
if((s & Imask) == 0 && δ > 1500)
|
||||
return -1;
|
||||
if(d->state == Dready && (s & Smask) == Sphylink)
|
||||
return 0;
|
||||
esleep(250);
|
||||
}
|
||||
print("%s: not responding; offline\n", dnam(d));
|
||||
ilock(d);
|
||||
d->state = Doffline;
|
||||
iunlock(d);
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
lockready(Drive *d)
|
||||
{
|
||||
|
|
@ -1643,13 +1670,11 @@ io(Drive *d, uint proto, int to, int interrupt)
|
|||
if(interrupt){
|
||||
d->active--;
|
||||
d->port->ci = 0;
|
||||
if(ahcicomreset(&d->portc) == -1){
|
||||
ilock(d);
|
||||
d->state = Dreset;
|
||||
iunlock(d);
|
||||
}
|
||||
if(ahcicomreset(&d->portc) == -1)
|
||||
dstatus(d, Dreset);
|
||||
return SDtimeout;
|
||||
}
|
||||
|
||||
sleep(&d->portm, ahciclear, &as);
|
||||
poperror();
|
||||
|
||||
|
|
@ -1737,6 +1762,8 @@ ahcibio(SDunit *u, int lun, int write, void *a, long count, uvlong lba)
|
|||
}
|
||||
rw = write? SDwrite: SDread;
|
||||
data = a;
|
||||
dprint("%s: bio: %llud %c %lud (max %d) %p\n",
|
||||
dnam(d), lba, "rw"[rw], count, max, data);
|
||||
for(try = 0; try < 10;){
|
||||
n = count;
|
||||
if(n > max)
|
||||
|
|
@ -1803,8 +1830,7 @@ iario(SDreq *r)
|
|||
static uchar bogusrfis[16] = {
|
||||
[Ftype] 0x34,
|
||||
[Fioport] 0x40,
|
||||
[Fstatus] 0x50,
|
||||
|
||||
[Fstatus] 0x50,
|
||||
[Fdev] 0xa0,
|
||||
};
|
||||
|
||||
|
|
@ -1894,8 +1920,7 @@ iaataio(SDreq *r)
|
|||
return sdr(r, d, r->status);
|
||||
}
|
||||
print("%s: bad disk\n", dnam(d));
|
||||
r->status = SDeio;
|
||||
return SDeio;
|
||||
return r->status = SDeio;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -2116,6 +2141,7 @@ loop:
|
|||
s->ctlr = c;
|
||||
c->sdev = s;
|
||||
|
||||
ahcihandoff((Ahba*)c->mmio);
|
||||
if(intel(c) && p->did != 0x2681)
|
||||
iasetupahci(c);
|
||||
// ahcihbareset((Ahba*)c->mmio);
|
||||
|
|
@ -2238,6 +2264,7 @@ iarctl(SDunit *u, char *p, int l)
|
|||
p = seprint(p, e, "geometry %llud %lud\n", d->sectors, u->secsize);
|
||||
p = seprint(p, e, "alignment %d %d\n",
|
||||
d->secsize<<d->portm.physshift, d->portm.physalign);
|
||||
p = seprint(p, e, "missirq\t%ud\n", c->missirq);
|
||||
return p - op;
|
||||
}
|
||||
|
||||
|
|
@ -2266,10 +2293,7 @@ forcestate(Drive *d, char *state)
|
|||
break;
|
||||
if(i == nelem(diskstates))
|
||||
error(Ebadctl);
|
||||
ilock(d);
|
||||
d->state = i;
|
||||
// statechange(d);
|
||||
iunlock(d);
|
||||
dstatus(d, i);
|
||||
}
|
||||
|
||||
static int
|
||||
|
|
|
|||
Loading…
Reference in New Issue