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 || pa+7 < pa)
119 if(ntblpa >= nelem(tblpa) || ntblmap >= nelem(tblmap))
122 for(i=0; i<ntblpa; i++){
126 tblpa[ntblpa++] = pa;
129 if((t = vmap(pa, 8)) == nil)
140 if((t = vmap(pa, l)) == nil)
146 tblmap[ntblmap++] = t;
150 if(memcmp("RSDT", t->sig, 4) == 0){
151 for(p = t->data; p+3 < e; p += 4)
155 if(memcmp("XSDT", t->sig, 4) == 0){
156 for(p = t->data; p+7 < e; p += 8)
160 if(memcmp("FACP", t->sig, 4) == 0){
163 maptable(get32(p + 40));
166 maptable(get64(p + 140));
174 if(rsd == nil || ntblmap > 0 || ntblpa > 0)
176 if(!checksum(rsd, 20))
177 maptable(get32(rsd->raddr));
179 if(!checksum(rsd, 36))
180 maptable(get64(rsd->xaddr));
185 findapic(int gsi, int *pintin)
190 for(i=0; i<=MaxAPICNO; i++){
191 if((a = mpioapic[i]) == nil)
193 if((a->flags & PcmpEN) == 0)
195 if(gsi >= a->gsibase && gsi <= a->gsibase+a->mre){
197 *pintin = gsi - a->gsibase;
201 print("findapic: no ioapic found for gsi %d\n", gsi);
206 addirq(int gsi, int type, int busno, int irq, int flags)
214 if((a = findapic(gsi, &intin)) == nil)
217 for(bus = mpbus; bus; bus = bus->next)
218 if(bus->type == type && bus->busno == busno)
221 if((bus = xalloc(sizeof(Bus))) == nil)
222 panic("addirq: no memory for Bus");
235 mpbuslast->next = bus;
241 for(ai = bus->aintr; ai; ai = ai->next)
242 if(ai->intr->irq == irq)
245 if((pi = xalloc(sizeof(PCMPintr))) == nil)
246 panic("addirq: no memory for PCMPintr");
247 pi->type = PcmpIOINTR;
249 pi->flags = flags & (PcmpPOMASK|PcmpELMASK);
252 pi->apicno = a->apicno;
255 if((ai = xalloc(sizeof(Aintr))) == nil)
256 panic("addirq: no memory for Aintr");
259 ai->next = bus->aintr;
273 for(l = 0, i=24; i>=0; i -= 8, b >>= 8)
274 l |= (b & 0xFF) << i;
276 for(i=6; i>=3; i--, l >>= 4)
277 id[i] = "0123456789ABCDEF"[l & 0xF];
278 for(i=2; i>=0; i--, l >>= 5)
279 id[i] = '@' + (l & 0x1F);
292 if((x = amlwalk(dot, "^_HID")) != nil)
293 if((p = amlval(x)) != nil)
295 if((x = amlwalk(dot, "^_BBN")) == nil)
296 if((x = amlwalk(dot, "^_ADR")) == nil)
299 if(amleval(x, "", &p) < 0)
302 /* if root bridge, then we are done here */
303 if(id != nil && (strcmp(id, "PNP0A03")==0 || strcmp(id, "PNP0A08")==0))
305 x = amlwalk(dot, "^");
306 if(x == nil || x == dot)
308 if((bno = pcibusno(x)) < 0)
310 tbdf = MKBUS(BusPCI, bno, adr>>16, adr&0xFFFF);
311 pdev = pcimatchtbdf(tbdf);
314 if(pdev->bridge == nil)
316 return BUSBNO(pdev->bridge->tbdf);
326 if((x = amlwalk(dot, "_ADR")) == nil){
327 x = amlwalk(dot, "^");
328 if(x == nil || x == dot)
333 if((bno = pcibusno(x)) < 0)
336 if(amleval(x, "", &p) < 0)
339 return MKBUS(BusPCI, bno, adr>>16, adr&0xFFFF);
345 getirqs(void *d, uchar pmask[32], int *pflags)
351 memset(pmask, 0, 32);
355 if(amllen(d) >= 2 && (p[0] == 0x22 || p[0] == 0x23)){
358 if(amllen(d) >= 3 && p[0] == 0x23)
359 *pflags = ((p[3] & (1<<0)) ? PcmpEDGE : PcmpLEVEL)
360 | ((p[3] & (1<<3)) ? PcmpLOW : PcmpHIGH);
363 if(amllen(d) >= 5 && p[0] == 0x89){
365 if(amllen(d) < 5+n*4)
368 m = get32(p+5 + i*4);
369 if(m >= 0 && m < 256)
370 pmask[m/8] |= 1<<(m%8);
372 *pflags = ((p[3] & (1<<1)) ? PcmpEDGE : PcmpLEVEL)
373 | ((p[3] & (1<<2)) ? PcmpLOW : PcmpHIGH);
380 setirq(void *d, uint irq)
386 p = amlnew('b', amllen(d));
387 memmove(p, d, amllen(p));
388 if(p[0] == 0x22 || p[0] == 0x23){
404 setuplink(void *link, int *pflags)
406 uchar im, pm[32], cm[32], *c;
407 static int lastirq = 1;
411 if(amltag(link) != 'N')
415 if(amleval(amlwalk(link, "_PRS"), "", &r) < 0)
417 if(getirqs(r, pm, pflags) < 0)
421 if(amleval(amlwalk(link, "_CRS"), "", &r) < 0)
423 if(getirqs(r, cm, pflags) < 0)
427 for(i=0; i<256; i++){
435 if(gsi > 0 || getconf("*nopcirouting") != nil)
438 for(i=0; i<256; i++){
439 gsi = lastirq++ & 0xFF; /* round robin */
442 if((c = setirq(r, gsi)) == nil)
444 if(amleval(amlwalk(link, "_SRS"), "b", c, nil) < 0)
453 enumprt(void *dot, void *)
456 int bno, dno, pin, gsi, flags;
463 /* evalulate _PRT method */
465 if(amleval(dot, "", &p) < 0)
474 if(amltag(a[i]) != 'p')
476 if(amllen(a[i]) != 4)
480 dno = amlint(b[0])>>16;
484 gsi = setuplink(b[2], &flags);
488 addirq(gsi, BusPCI, bno, (dno<<2)|pin, flags);
496 enumec(void *dot, void *)
498 int cmdport, dataport;
504 id = eisaid(amlval(amlwalk(dot, "^_HID")));
505 if(id == nil || strcmp(id, "PNP0C09") != 0)
507 if((x = amlwalk(dot, "^_CRS")) == nil)
509 if(amleval(x, "", &b) < 0 || amltag(b) != 'b' || amllen(b) < 16)
511 if(b[0] != 0x47 || b[8] != 0x47) /* two i/o port descriptors */
513 dataport = b[0+2] | b[0+3]<<8;
514 cmdport = b[8+2] | b[8+3]<<8;
515 ecinit(cmdport, dataport);
520 readmem(Chan*, void *v, long n, vlong o)
522 uintptr pa = (uintptr)o;
525 if((n = memcheck(pa, n)) <= 0)
527 if((t = vmap(pa, n)) == nil)
540 writemem(Chan*, void *v, long n, vlong o)
542 uintptr pa = (uintptr)o;
545 if(memcheck(pa, n) != n)
547 if((t = vmap(pa, n)) == nil)
572 for(i=0; i<ntblmap; i++){
574 if(memcmp(t->sig, "DSDT", 4) == 0){
575 amlintmask = (~0ULL) >> (t->rev <= 1)*32;
576 amlload(t->data, tbldlen(t));
581 /* load SSDT, there can be multiple tables */
582 for(i=0; i<ntblmap; i++){
584 if(memcmp(t->sig, "SSDT", 4) == 0)
585 amlload(t->data, tbldlen(t));
589 amleval(amlwalk(amlroot, "_PIC"), "i", 1, nil);
591 for(i=0; i<ntblmap; i++){
593 if(memcmp(t->sig, "APIC", 4) == 0)
596 panic("acpiinit: no MADT (APIC) table");
602 lapicbase = get32(s); s += 8;
603 va = vmap(lapicbase, 1024);
604 print("LAPIC: %.8lux %#p\n", lapicbase, va);
606 panic("acpiinit: cannot map lapic %.8lux", lapicbase);
609 for(p = s; p < e; p += c){
611 if(c < 2 || (p+c) > e)
614 case 0x00: /* Processor Local APIC */
617 if((a = xalloc(sizeof(Apic))) == nil)
618 panic("acpiinit: no memory for Apic");
619 a->type = PcmpPROCESSOR;
621 a->paddr = lapicbase;
623 a->lintr[0] = ApicIMASK;
624 a->lintr[1] = ApicIMASK;
625 a->flags = p[4] & PcmpEN;
627 /* skip disabled processors */
628 if((a->flags & PcmpEN) == 0 || mpapic[a->apicno] != nil){
632 a->machno = machno++;
635 * platform firmware should list the boot processor
636 * as the first processor entry in the MADT
641 mpapic[a->apicno] = a;
643 case 0x01: /* I/O APIC */
646 if((a = xalloc(sizeof(Apic))) == nil)
647 panic("acpiinit: no memory for io Apic");
648 a->type = PcmpIOAPIC;
650 a->paddr = get32(p+4);
651 if((a->addr = vmap(a->paddr, 1024)) == nil)
652 panic("acpiinit: cannot map ioapic %.8lux", a->paddr);
653 a->gsibase = get32(p+8);
655 mpioapic[a->apicno] = a;
656 ioapicinit(a, a->apicno);
662 * need 2nd pass as vbox puts interrupt overrides
663 * *before* the ioapic entries (!)
665 for(p = s; p < e; p += c){
667 if(c < 2 || (p+c) > e)
670 case 0x02: /* Interrupt Source Override */
671 addirq(get32(p+4), BusISA, 0, p[3], get16(p+8));
673 case 0x03: /* NMI Source */
674 case 0x04: /* Local APIC NMI */
675 case 0x05: /* Local APIC Address Override */
676 case 0x06: /* I/O SAPIC */
677 case 0x07: /* Local SAPIC */
678 case 0x08: /* Platform Interrupt Sources */
679 case 0x09: /* Processor Local x2APIC */
680 case 0x0A: /* x2APIC NMI */
682 case 0x0C: /* GICD */
687 /* find embedded controller */
688 amlenum(amlroot, "_HID", enumec, nil);
690 /* look for PCI interrupt mappings */
691 amlenum(amlroot, "_PRT", enumprt, nil);
693 /* add identity mapped legacy isa interrupts */
695 addirq(i, BusISA, 0, i, 0);
697 /* free the AML interpreter */
701 * Ininitalize local APIC and start application processors.
713 /* stop application processors */
716 /* locate and write platform reset register */
717 for(i=0; i < ntblmap; i++){
719 if(memcmp(t->sig, "FACP", 4) != 0)
721 if(get32(t->len) <= 128)
724 if((get32(p + 112) & (1<<10)) == 0)
726 if(p[116+0] != IoSpace)
728 outb(get32(p+116+4), p[128]);
732 /* acpi shutdown failed, try generic reset */
736 static int identify(void);
743 .intrenable= mpintrenable,
744 .intron= lapicintron,
745 .introff= lapicintroff,
746 .fastclock= i8253read,
747 .timerset= lapictimerset,
751 readtbls(Chan*, void *v, long n, vlong o)
760 for(i=0; n > 0 && i < ntblmap; i++){
770 memmove(p, (uchar*)t + o, m);
775 return p - (uchar*)v;
784 if((cp = getconf("*acpi")) == nil)
786 pa = (uintptr)strtoull(cp, nil, 16);
790 memreserve(pa, sizeof(Rsd));
791 rsd = vmap(pa, sizeof(Rsd));
795 if(checksum(rsd, 20) && checksum(rsd, 36))
798 addarchfile("acpitbls", 0444, readtbls, nil);
799 addarchfile("acpimem", 0600, readmem, writemem);
800 if(strcmp(cp, "0") == 0)
802 if((cp = getconf("*nomp")) != nil && strcmp(cp, "0") != 0)
804 if(m->havetsc && getconf("*notsc") == nil)
805 archacpi.fastclock = tscticks;
810 readpcicfg(Amlio *io, void *data, int n, int offset)
827 if(!(r & 3) && n == 4){
832 if(!(r & 1) && n == 2){
837 for(i = 0; i < n; i++){
847 readec(Amlio *io, void *data, int n, int off)
853 if(off < 0 || off >= 256)
858 for(port = off; port < off+n; port++){
859 if((v = ecread(port)) < 0)
867 writeec(Amlio *io, void *data, int n, int off)
873 if(off < 0 || off+n > 256)
876 for(port = off; port < off+n; port++)
877 if(ecwrite(port, *p++) < 0)
883 writepcicfg(Amlio *io, void *data, int n, int offset)
900 if(!(r & 3) && n == 4){
905 if(!(r & 1) && n == 2){
910 for(i = 0; i < n; i++){
920 readioport(Amlio *io, void *data, int len, int port)
928 PBIT32(a, inl(port));
931 PBIT16(a, ins(port));
941 writeioport(Amlio *io, void *data, int len, int port)
949 outl(port, GBIT32(a));
952 outs(port, GBIT16(a));
955 outb(port, GBIT8(a));
970 print("amlmapio: address space %x not implemented\n", io->space);
973 if(memcheck(io->off, io->len) != io->len){
974 print("amlmapio: [%#p-%#p) overlaps usable memory\n",
975 (uintptr)io->off, (uintptr)(io->off+io->len));
978 if((io->va = vmap(io->off, io->len)) == nil){
979 print("amlmapio: vmap failed\n");
984 snprint(buf, sizeof(buf), "%N", io->name);
985 if(ioalloc(io->off, io->len, 0, buf) < 0){
986 print("amlmapio: ioalloc failed\n");
989 io->read = readioport;
990 io->write = writeioport;
993 if((tbdf = pciaddr(io->name)) < 0){
994 print("amlmapio: no address\n");
997 if((pdev = pcimatchtbdf(tbdf)) == nil){
998 print("amlmapio: no device %T\n", tbdf);
1002 io->read = readpcicfg;
1003 io->write = writepcicfg;
1007 io->write = writeec;
1010 print("amlmapio: mapping %N failed\n", io->name);
1015 amlunmapio(Amlio *io)
1019 vunmap(io->va, io->len);
1031 if((p = malloc(n)) == nil)
1032 panic("amlalloc: no memory");