2 #include "../port/lib.h"
12 typedef struct Rsd Rsd;
13 typedef struct Tbl Tbl;
41 Tblsz = 4+4+1+1+6+8+4+4+4,
46 /* physical addresses visited by maptable() */
48 static uintptr tblpa[64];
50 /* successfully mapped tables */
52 static Tbl *tblmap[64];
56 return p[1]<<8 | p[0];
61 return p[3]<<24 | p[2]<<16 | p[1]<<8 | p[0];
69 return u<<32 | get32(p);
74 return get32(t->len) - Tblsz;
87 if((uvlong)pa != xpa || pa == 0)
89 if(ntblpa >= nelem(tblpa) || ntblmap >= nelem(tblmap))
92 for(i=0; i<ntblpa; i++){
98 if((t = vmap(pa, 8)) == nil)
106 if((t = vmap(pa, l)) == nil)
112 tblmap[ntblmap++] = t;
116 if(memcmp("RSDT", t->sig, 4) == 0){
117 for(p = t->data; p+3 < e; p += 4)
121 if(memcmp("XSDT", t->sig, 4) == 0){
122 for(p = t->data; p+7 < e; p += 8)
126 if(memcmp("FACP", t->sig, 4) == 0){
129 maptable(get32(p + 40));
132 maptable(get64(p + 140));
140 if(rsd == nil || ntblmap > 0 || ntblpa > 0)
142 if(!checksum(rsd, 20))
143 maptable(get32(rsd->raddr));
145 if(!checksum(rsd, 36))
146 maptable(get64(rsd->xaddr));
150 findapic(int gsi, int *pintin)
155 for(i=0; i<=MaxAPICNO; i++){
156 if((a = mpioapic[i]) == nil)
158 if((a->flags & PcmpEN) == 0)
160 if(gsi >= a->gsibase && gsi <= a->gsibase+a->mre){
162 *pintin = gsi - a->gsibase;
166 print("findapic: no ioapic found for gsi %d\n", gsi);
171 addirq(int gsi, int type, int busno, int irq, int flags)
179 if((a = findapic(gsi, &intin)) == nil)
182 for(bus = mpbus; bus; bus = bus->next)
183 if(bus->type == type && bus->busno == busno)
186 if((bus = xalloc(sizeof(Bus))) == nil)
187 panic("addirq: no memory for Bus");
200 mpbuslast->next = bus;
206 for(ai = bus->aintr; ai; ai = ai->next)
207 if(ai->intr->irq == irq)
210 if((pi = xalloc(sizeof(PCMPintr))) == nil)
211 panic("addirq: no memory for PCMPintr");
212 pi->type = PcmpIOINTR;
214 pi->flags = flags & (PcmpPOMASK|PcmpELMASK);
217 pi->apicno = a->apicno;
220 if((ai = xalloc(sizeof(Aintr))) == nil)
221 panic("addirq: no memory for Aintr");
224 ai->next = bus->aintr;
238 for(l = 0, i=24; i>=0; i -= 8, b >>= 8)
239 l |= (b & 0xFF) << i;
241 for(i=6; i>=3; i--, l >>= 4)
242 id[i] = "0123456789ABCDEF"[l & 0xF];
243 for(i=2; i>=0; i--, l >>= 5)
244 id[i] = '@' + (l & 0x1F);
257 if((x = amlwalk(dot, "^_HID")) != nil)
258 if((p = amlval(x)) != nil)
260 if((x = amlwalk(dot, "^_BBN")) == nil)
261 if((x = amlwalk(dot, "^_ADR")) == nil)
263 if((p = amlval(x)) == nil)
266 /* if root bridge, then we are done here */
267 if(id != nil && (strcmp(id, "PNP0A03")==0 || strcmp(id, "PNP0A08")==0))
269 x = amlwalk(dot, "^");
270 if(x == nil || x == dot)
272 if((bno = pcibusno(x)) < 0)
274 tbdf = MKBUS(BusPCI, bno, adr>>16, adr&0xFFFF);
275 pdev = pcimatchtbdf(tbdf);
276 if(pdev == nil || pdev->bridge == nil)
278 return BUSBNO(pdev->bridge->tbdf);
288 if((x = amlwalk(dot, "_ADR")) == nil){
289 x = amlwalk(dot, "^");
290 if(x == nil || x == dot)
295 if((bno = pcibusno(x)) < 0)
297 if((x = amlval(x)) == nil)
300 return MKBUS(BusPCI, bno, adr>>16, adr&0xFFFF);
306 getirqs(void *d, uchar pmask[32], int *pflags)
312 memset(pmask, 0, 32);
316 if(amllen(d) >= 2 && (p[0] == 0x22 || p[0] == 0x23)){
319 if(amllen(d) >= 3 && p[0] == 0x23)
320 *pflags = ((p[3] & (1<<0)) ? PcmpEDGE : PcmpLEVEL)
321 | ((p[3] & (1<<3)) ? PcmpLOW : PcmpHIGH);
324 if(amllen(d) >= 5 && p[0] == 0x89){
326 if(amllen(d) < 5+n*4)
329 m = get32(p+5 + i*4);
330 if(m >= 0 && m < 256)
331 pmask[m/8] |= 1<<(m%8);
333 *pflags = ((p[3] & (1<<1)) ? PcmpEDGE : PcmpLEVEL)
334 | ((p[3] & (1<<2)) ? PcmpLOW : PcmpHIGH);
341 setirq(void *d, uint irq)
347 p = amlnew('b', amllen(d));
348 memmove(p, d, amllen(p));
349 if(p[0] == 0x22 || p[0] == 0x23){
365 setuplink(void *link, int *pflags)
367 uchar im, pm[32], cm[32], *c;
371 if(amltag(link) != 'N')
375 if(amleval(amlwalk(link, "_PRS"), "", &r) < 0)
377 if(getirqs(r, pm, pflags) < 0)
381 if(amleval(amlwalk(link, "_CRS"), "", &r) < 0)
383 if(getirqs(r, cm, pflags) < 0)
387 print("setuplink: %N: EL=%s%s PO=%s%s INTIN=[ ", link,
388 (*pflags & PcmpELMASK) == PcmpEDGE ? "EDGE" : "",
389 (*pflags & PcmpELMASK) == PcmpLEVEL ? "LEVEL" : "",
390 (*pflags & PcmpPOMASK) == PcmpHIGH ? "HIGH" : "",
391 (*pflags & PcmpPOMASK) == PcmpLOW ? "LOW" : "");
392 for(i=0; i<256; i++){
405 if(getconf("*nopcirouting") == nil)
406 if(gsi <= 0 && gsi2 > 0 && (c = setirq(r, gsi2)) != nil){
407 if(amleval(amlwalk(link, "_SRS"), "b", c, nil) == 0){
409 print("setuplink: %N -> %d\n", link, gsi);
417 enumprt(void *dot, void *)
420 int bno, dno, pin, gsi, flags;
427 /* evalulate _PRT method */
429 if(amleval(dot, "", &p) < 0)
438 if(amltag(a[i]) != 'p')
440 if(amllen(a[i]) != 4)
444 dno = amlint(b[0])>>16;
448 gsi = setuplink(b[2], &flags);
452 addirq(gsi, BusPCI, bno, (dno<<2)|pin, flags);
474 for(i=0; i<ntblmap; i++){
476 if(memcmp(t->sig, "DSDT", 4) == 0){
477 amlload(t->data, tbldlen(t));
482 /* load SSDT, there can be multiple tables */
483 for(i=0; i<ntblmap; i++){
485 if(memcmp(t->sig, "SSDT", 4) == 0)
486 amlload(t->data, tbldlen(t));
490 amleval(amlwalk(amlroot, "_PIC"), "i", 1, nil);
492 for(i=0; i<ntblmap; i++){
494 if(memcmp(t->sig, "APIC", 4) == 0)
497 panic("acpiinit: no MADT (APIC) table");
503 lapicbase = get32(p); p += 8;
504 va = vmap(lapicbase, 1024);
505 print("LAPIC: %.8lux %.8lux\n", lapicbase, (ulong)va);
507 panic("acpiinit: cannot map lapic %.8lux", lapicbase);
510 for(; p < e; p += c){
512 if(c < 2 || (p+c) > e)
515 case 0x00: /* Processor Local APIC */
518 if((a = xalloc(sizeof(Apic))) == nil)
519 panic("acpiinit: no memory for Apic");
520 a->type = PcmpPROCESSOR;
522 a->paddr = lapicbase;
524 a->lintr[0] = ApicIMASK;
525 a->lintr[1] = ApicIMASK;
526 a->flags = p[4] & PcmpEN;
528 /* skip disabled processors */
529 if((a->flags & PcmpEN) == 0 || mpapic[a->apicno] != nil){
533 a->machno = machno++;
536 * platform firmware should list the boot processor
537 * as the first processor entry in the MADT
542 mpapic[a->apicno] = a;
544 case 0x01: /* I/O APIC */
547 if((a = xalloc(sizeof(Apic))) == nil)
548 panic("acpiinit: no memory for io Apic");
549 a->type = PcmpIOAPIC;
551 a->paddr = get32(p+4);
552 if((a->addr = vmap(a->paddr, 1024)) == nil)
553 panic("acpiinit: cannot map ioapic %.8lux", a->paddr);
554 a->gsibase = get32(p+8);
556 mpioapic[a->apicno] = a;
557 ioapicinit(a, a->apicno);
559 case 0x02: /* Interrupt Source Override */
560 addirq(get32(p+4), BusISA, 0, p[3], get16(p+8));
562 case 0x03: /* NMI Source */
563 case 0x04: /* Local APIC NMI */
564 case 0x05: /* Local APIC Address Override */
565 case 0x06: /* I/O SAPIC */
566 case 0x07: /* Local SAPIC */
567 case 0x08: /* Platform Interrupt Sources */
568 case 0x09: /* Processor Local x2APIC */
569 case 0x0A: /* x2APIC NMI */
571 case 0x0C: /* GICD */
576 /* look for PCI interrupt mappings */
577 amlenum(amlroot, "_PRT", enumprt, nil);
579 /* add identity mapped legacy isa interrupts */
581 addirq(i, BusISA, 0, i, 0);
583 /* free the AML interpreter */
587 * Ininitalize local APIC and start application processors.
592 static int identify(void);
599 .intrenable= mpintrenable,
600 .intron= lapicintron,
601 .introff= lapicintroff,
602 .fastclock= i8253read,
603 .timerset= lapictimerset,
607 readtbls(Chan*, void *v, long n, vlong o)
616 for(i=0; n > 0 && i < ntblmap; i++){
626 memmove(p, (uchar*)t + o, m);
631 return p - (uchar*)v;
639 if((cp = getconf("*acpi")) == nil)
641 if((rsd = sigsearch("RSD PTR ")) == nil)
643 if(checksum(rsd, 20) && checksum(rsd, 36))
645 addarchfile("acpitbls", 0444, readtbls, nil);
646 if(strcmp(cp, "0") == 0)
648 if((cp = getconf("*nomp")) != nil && strcmp(cp, "0") != 0)
650 if(m->havetsc && getconf("*notsc") == nil)
651 archacpi.fastclock = tscticks;
656 readpcicfg(Amlio *io, void *data, int n, int offset)
673 if(!(r & 3) && n == 4){
678 if(!(r & 1) && n == 2){
683 for(i = 0; i < n; i++){
693 writepcicfg(Amlio *io, void *data, int n, int offset)
710 if(!(r & 3) && n == 4){
715 if(!(r & 1) && n == 2){
720 for(i = 0; i < n; i++){
730 readioport(Amlio *io, void *data, int len, int port)
738 PBIT32(a, inl(port));
741 PBIT16(a, ins(port));
751 writeioport(Amlio *io, void *data, int len, int port)
759 outl(port, GBIT32(a));
762 outs(port, GBIT16(a));
765 outb(port, GBIT8(a));
780 print("amlmapio: address space %x not implemented\n", io->space);
783 if((io->va = vmap(io->off, io->len)) == nil){
784 print("amlmapio: vmap failed\n");
789 snprint(buf, sizeof(buf), "%N", io->name);
790 if(ioalloc(io->off, io->len, 0, buf) < 0){
791 print("amlmapio: ioalloc failed\n");
794 io->read = readioport;
795 io->write = writeioport;
798 if((tbdf = pciaddr(io->name)) < 0){
799 print("amlmapio: no address\n");
802 if((pdev = pcimatchtbdf(tbdf)) == nil){
803 print("amlmapio: no device %T\n", tbdf);
807 io->read = readpcicfg;
808 io->write = writepcicfg;
811 print("amlmapio: mapping %N failed\n", io->name);
816 amlunmapio(Amlio *io)
820 vunmap(io->va, io->len);
832 if((p = malloc(n)) == nil)
833 panic("amlalloc: no memory");