2 #include "../port/lib.h"
7 #include "../port/error.h"
13 typedef struct Rsd Rsd;
14 typedef struct Tbl Tbl;
42 Tblsz = 4+4+1+1+6+8+4+4+4,
47 /* physical addresses visited by maptable() */
49 static uintptr tblpa[64];
51 /* successfully mapped tables */
53 static Tbl *tblmap[64];
57 return p[1]<<8 | p[0];
62 return p[3]<<24 | p[2]<<16 | p[1]<<8 | p[0];
70 return u<<32 | get32(p);
75 return get32(t->len) - Tblsz;
79 memcheck(uintptr pa, long len)
92 if(pa < PADDR(CPU0END))
94 if(pe >= PADDR(KTZERO) && pa < PADDR(end))
95 return PADDR(KTZERO) - pa;
96 for(i=0; i<nelem(conf.mem); i++){
100 if(pe >= cm->base && pa <= cm->base + cm->npage*BY2PG - 1)
101 return cm->base - pa;
116 if((uvlong)pa != xpa || pa == 0)
118 if(ntblpa >= nelem(tblpa) || ntblmap >= nelem(tblmap))
121 for(i=0; i<ntblpa; i++){
125 tblpa[ntblpa++] = pa;
127 if((t = vmap(pa, 8)) == nil)
134 if(memcheck(pa, l) != l){
135 print("maptable: ignoring %.4s at [%#p-%#p); overlaps usable memory\n",
136 (char*)t->sig, pa, pa+l);
142 if((t = vmap(pa, l)) == nil)
148 tblmap[ntblmap++] = t;
152 if(memcmp("RSDT", t->sig, 4) == 0){
153 for(p = t->data; p+3 < e; p += 4)
157 if(memcmp("XSDT", t->sig, 4) == 0){
158 for(p = t->data; p+7 < e; p += 8)
162 if(memcmp("FACP", t->sig, 4) == 0){
165 maptable(get32(p + 40));
168 maptable(get64(p + 140));
176 if(rsd == nil || ntblmap > 0 || ntblpa > 0)
178 if(!checksum(rsd, 20))
179 maptable(get32(rsd->raddr));
181 if(!checksum(rsd, 36))
182 maptable(get64(rsd->xaddr));
186 findapic(int gsi, int *pintin)
191 for(i=0; i<=MaxAPICNO; i++){
192 if((a = mpioapic[i]) == nil)
194 if((a->flags & PcmpEN) == 0)
196 if(gsi >= a->gsibase && gsi <= a->gsibase+a->mre){
198 *pintin = gsi - a->gsibase;
202 print("findapic: no ioapic found for gsi %d\n", gsi);
207 addirq(int gsi, int type, int busno, int irq, int flags)
215 if((a = findapic(gsi, &intin)) == nil)
218 for(bus = mpbus; bus; bus = bus->next)
219 if(bus->type == type && bus->busno == busno)
222 if((bus = xalloc(sizeof(Bus))) == nil)
223 panic("addirq: no memory for Bus");
236 mpbuslast->next = bus;
242 for(ai = bus->aintr; ai; ai = ai->next)
243 if(ai->intr->irq == irq)
246 if((pi = xalloc(sizeof(PCMPintr))) == nil)
247 panic("addirq: no memory for PCMPintr");
248 pi->type = PcmpIOINTR;
250 pi->flags = flags & (PcmpPOMASK|PcmpELMASK);
253 pi->apicno = a->apicno;
256 if((ai = xalloc(sizeof(Aintr))) == nil)
257 panic("addirq: no memory for Aintr");
260 ai->next = bus->aintr;
274 for(l = 0, i=24; i>=0; i -= 8, b >>= 8)
275 l |= (b & 0xFF) << i;
277 for(i=6; i>=3; i--, l >>= 4)
278 id[i] = "0123456789ABCDEF"[l & 0xF];
279 for(i=2; i>=0; i--, l >>= 5)
280 id[i] = '@' + (l & 0x1F);
293 if((x = amlwalk(dot, "^_HID")) != nil)
294 if((p = amlval(x)) != nil)
296 if((x = amlwalk(dot, "^_BBN")) == nil)
297 if((x = amlwalk(dot, "^_ADR")) == nil)
300 if(amleval(x, "", &p) < 0)
303 /* if root bridge, then we are done here */
304 if(id != nil && (strcmp(id, "PNP0A03")==0 || strcmp(id, "PNP0A08")==0))
306 x = amlwalk(dot, "^");
307 if(x == nil || x == dot)
309 if((bno = pcibusno(x)) < 0)
311 tbdf = MKBUS(BusPCI, bno, adr>>16, adr&0xFFFF);
312 pdev = pcimatchtbdf(tbdf);
315 if(pdev->bridge == nil)
317 return BUSBNO(pdev->bridge->tbdf);
327 if((x = amlwalk(dot, "_ADR")) == nil){
328 x = amlwalk(dot, "^");
329 if(x == nil || x == dot)
334 if((bno = pcibusno(x)) < 0)
337 if(amleval(x, "", &p) < 0)
340 return MKBUS(BusPCI, bno, adr>>16, adr&0xFFFF);
346 getirqs(void *d, uchar pmask[32], int *pflags)
352 memset(pmask, 0, 32);
356 if(amllen(d) >= 2 && (p[0] == 0x22 || p[0] == 0x23)){
359 if(amllen(d) >= 3 && p[0] == 0x23)
360 *pflags = ((p[3] & (1<<0)) ? PcmpEDGE : PcmpLEVEL)
361 | ((p[3] & (1<<3)) ? PcmpLOW : PcmpHIGH);
364 if(amllen(d) >= 5 && p[0] == 0x89){
366 if(amllen(d) < 5+n*4)
369 m = get32(p+5 + i*4);
370 if(m >= 0 && m < 256)
371 pmask[m/8] |= 1<<(m%8);
373 *pflags = ((p[3] & (1<<1)) ? PcmpEDGE : PcmpLEVEL)
374 | ((p[3] & (1<<2)) ? PcmpLOW : PcmpHIGH);
381 setirq(void *d, uint irq)
387 p = amlnew('b', amllen(d));
388 memmove(p, d, amllen(p));
389 if(p[0] == 0x22 || p[0] == 0x23){
405 setuplink(void *link, int *pflags)
407 uchar im, pm[32], cm[32], *c;
408 static int lastirq = 1;
412 if(amltag(link) != 'N')
416 if(amleval(amlwalk(link, "_PRS"), "", &r) < 0)
418 if(getirqs(r, pm, pflags) < 0)
422 if(amleval(amlwalk(link, "_CRS"), "", &r) < 0)
424 if(getirqs(r, cm, pflags) < 0)
428 for(i=0; i<256; i++){
436 if(gsi > 0 || getconf("*nopcirouting") != nil)
439 for(i=0; i<256; i++){
440 gsi = lastirq++ & 0xFF; /* round robin */
443 if((c = setirq(r, gsi)) == nil)
445 if(amleval(amlwalk(link, "_SRS"), "b", c, nil) < 0)
454 enumprt(void *dot, void *)
457 int bno, dno, pin, gsi, flags;
464 /* evalulate _PRT method */
466 if(amleval(dot, "", &p) < 0)
475 if(amltag(a[i]) != 'p')
477 if(amllen(a[i]) != 4)
481 dno = amlint(b[0])>>16;
485 gsi = setuplink(b[2], &flags);
489 addirq(gsi, BusPCI, bno, (dno<<2)|pin, flags);
497 enumec(void *dot, void *)
499 int cmdport, dataport;
505 id = eisaid(amlval(amlwalk(dot, "^_HID")));
506 if(id == nil || strcmp(id, "PNP0C09") != 0)
508 if((x = amlwalk(dot, "^_CRS")) == nil)
510 if(amleval(x, "", &b) < 0 || amltag(b) != 'b' || amllen(b) < 16)
512 if(b[0] != 0x47 || b[8] != 0x47) /* two i/o port descriptors */
514 dataport = b[0+2] | b[0+3]<<8;
515 cmdport = b[8+2] | b[8+3]<<8;
516 ecinit(cmdport, dataport);
521 readmem(Chan*, void *v, long n, vlong o)
523 uintptr pa = (uintptr)o;
526 if((n = memcheck(pa, n)) <= 0)
528 if((t = vmap(pa, n)) == nil)
541 writemem(Chan*, void *v, long n, vlong o)
543 uintptr pa = (uintptr)o;
546 if(memcheck(pa, n) != n)
548 if((t = vmap(pa, n)) == nil)
575 for(i=0; i<ntblmap; i++){
577 if(memcmp(t->sig, "DSDT", 4) == 0){
578 amlintmask = (~0ULL) >> (t->rev <= 1)*32;
579 amlload(t->data, tbldlen(t));
584 /* load SSDT, there can be multiple tables */
585 for(i=0; i<ntblmap; i++){
587 if(memcmp(t->sig, "SSDT", 4) == 0)
588 amlload(t->data, tbldlen(t));
592 amleval(amlwalk(amlroot, "_PIC"), "i", 1, nil);
594 for(i=0; i<ntblmap; i++){
596 if(memcmp(t->sig, "APIC", 4) == 0)
599 panic("acpiinit: no MADT (APIC) table");
605 lapicbase = get32(s); s += 8;
606 va = vmap(lapicbase, 1024);
607 print("LAPIC: %.8lux %#p\n", lapicbase, va);
609 panic("acpiinit: cannot map lapic %.8lux", lapicbase);
612 for(p = s; p < e; p += c){
614 if(c < 2 || (p+c) > e)
617 case 0x00: /* Processor Local APIC */
620 if((a = xalloc(sizeof(Apic))) == nil)
621 panic("acpiinit: no memory for Apic");
622 a->type = PcmpPROCESSOR;
624 a->paddr = lapicbase;
626 a->lintr[0] = ApicIMASK;
627 a->lintr[1] = ApicIMASK;
628 a->flags = p[4] & PcmpEN;
630 /* skip disabled processors */
631 if((a->flags & PcmpEN) == 0 || mpapic[a->apicno] != nil){
635 a->machno = machno++;
638 * platform firmware should list the boot processor
639 * as the first processor entry in the MADT
644 mpapic[a->apicno] = a;
646 case 0x01: /* I/O APIC */
649 if((a = xalloc(sizeof(Apic))) == nil)
650 panic("acpiinit: no memory for io Apic");
651 a->type = PcmpIOAPIC;
653 a->paddr = get32(p+4);
654 if((a->addr = vmap(a->paddr, 1024)) == nil)
655 panic("acpiinit: cannot map ioapic %.8lux", a->paddr);
656 a->gsibase = get32(p+8);
658 mpioapic[a->apicno] = a;
659 ioapicinit(a, a->apicno);
665 * need 2nd pass as vbox puts interrupt overrides
666 * *before* the ioapic entries (!)
668 for(p = s; p < e; p += c){
670 if(c < 2 || (p+c) > e)
673 case 0x02: /* Interrupt Source Override */
674 addirq(get32(p+4), BusISA, 0, p[3], get16(p+8));
676 case 0x03: /* NMI Source */
677 case 0x04: /* Local APIC NMI */
678 case 0x05: /* Local APIC Address Override */
679 case 0x06: /* I/O SAPIC */
680 case 0x07: /* Local SAPIC */
681 case 0x08: /* Platform Interrupt Sources */
682 case 0x09: /* Processor Local x2APIC */
683 case 0x0A: /* x2APIC NMI */
685 case 0x0C: /* GICD */
690 /* find embedded controller */
691 amlenum(amlroot, "_HID", enumec, nil);
693 /* look for PCI interrupt mappings */
694 amlenum(amlroot, "_PRT", enumprt, nil);
696 /* add identity mapped legacy isa interrupts */
698 addirq(i, BusISA, 0, i, 0);
700 /* free the AML interpreter */
704 * Ininitalize local APIC and start application processors.
716 /* stop application processors */
719 /* locate and write platform reset register */
720 for(i=0; i < ntblmap; i++){
722 if(memcmp(t->sig, "FACP", 4) != 0)
724 if(get32(t->len) <= 128)
727 if((get32(p + 112) & (1<<10)) == 0)
729 if(p[116+0] != IoSpace)
731 outb(get32(p+116+4), p[128]);
735 /* acpi shutdown failed, try generic reset */
739 static int identify(void);
746 .intrenable= mpintrenable,
747 .intron= lapicintron,
748 .introff= lapicintroff,
749 .fastclock= i8253read,
750 .timerset= lapictimerset,
754 readtbls(Chan*, void *v, long n, vlong o)
763 for(i=0; n > 0 && i < ntblmap; i++){
773 memmove(p, (uchar*)t + o, m);
778 return p - (uchar*)v;
787 if((cp = getconf("*acpi")) == nil)
789 pa = (uintptr)strtoull(cp, nil, 16);
795 rsd = vmap(pa, sizeof(Rsd));
798 if(checksum(rsd, 20) && checksum(rsd, 36))
800 addarchfile("acpitbls", 0444, readtbls, nil);
801 addarchfile("acpimem", 0600, readmem, writemem);
802 if(strcmp(cp, "0") == 0)
804 if((cp = getconf("*nomp")) != nil && strcmp(cp, "0") != 0)
806 if(m->havetsc && getconf("*notsc") == nil)
807 archacpi.fastclock = tscticks;
812 readpcicfg(Amlio *io, void *data, int n, int offset)
829 if(!(r & 3) && n == 4){
834 if(!(r & 1) && n == 2){
839 for(i = 0; i < n; i++){
849 readec(Amlio *io, void *data, int n, int off)
855 if(off < 0 || off >= 256)
860 for(port = off; port < off+n; port++){
861 if((v = ecread(port)) < 0)
869 writeec(Amlio *io, void *data, int n, int off)
875 if(off < 0 || off+n > 256)
878 for(port = off; port < off+n; port++)
879 if(ecwrite(port, *p++) < 0)
885 writepcicfg(Amlio *io, void *data, int n, int offset)
902 if(!(r & 3) && n == 4){
907 if(!(r & 1) && n == 2){
912 for(i = 0; i < n; i++){
922 readioport(Amlio *io, void *data, int len, int port)
930 PBIT32(a, inl(port));
933 PBIT16(a, ins(port));
943 writeioport(Amlio *io, void *data, int len, int port)
951 outl(port, GBIT32(a));
954 outs(port, GBIT16(a));
957 outb(port, GBIT8(a));
972 print("amlmapio: address space %x not implemented\n", io->space);
975 if(memcheck(io->off, io->len) != io->len){
976 print("amlmapio: [%#p-%#p) overlaps usable memory\n",
977 (uintptr)io->off, (uintptr)(io->off+io->len));
980 if((io->va = vmap(io->off, io->len)) == nil){
981 print("amlmapio: vmap failed\n");
986 snprint(buf, sizeof(buf), "%N", io->name);
987 if(ioalloc(io->off, io->len, 0, buf) < 0){
988 print("amlmapio: ioalloc failed\n");
991 io->read = readioport;
992 io->write = writeioport;
995 if((tbdf = pciaddr(io->name)) < 0){
996 print("amlmapio: no address\n");
999 if((pdev = pcimatchtbdf(tbdf)) == nil){
1000 print("amlmapio: no device %T\n", tbdf);
1004 io->read = readpcicfg;
1005 io->write = writepcicfg;
1009 io->write = writeec;
1012 print("amlmapio: mapping %N failed\n", io->name);
1017 amlunmapio(Amlio *io)
1021 vunmap(io->va, io->len);
1033 if((p = malloc(n)) == nil)
1034 panic("amlalloc: no memory");