ref: 87c8fa541572387c012dab672890e13334ef8c37
dir: /sys/src/9/xen/archxen.c/
#include "u.h" #include "../port/lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" static int identify(void) { m->havepge = 0; return 0; } static void intrinit(void) { ulong machs; int i, ncpu; char *cp; char node[32]; char buf[32]; if((cp = getconf("*nomp")) != nil && strtol(cp, 0, 0) != 0) return; ncpu = MAX_VIRT_CPUS; if (cp = getconf("*ncpu")) { ncpu = strtol(cp, 0, 0); if (ncpu < 1) ncpu = 1; } machs = 1; for (i = 1; i < ncpu; i++) { sprint(node, "cpu/%d/availability", i); if (xenstore_read(node, buf, sizeof buf) <= 0) break; print("%s: %s\n", node, buf); if (strcmp(buf, "online") == 0) { machs |= 1<<i; conf.nmach++; } } if (conf.nmach > 1) { print("Sorry, SMP not supported yet: 1 of %lud CPUs startd\n", conf.nmach); conf.nmach = 1; } } static void shutdown(void) { HYPERVISOR_shutdown(1); } int xenintrenable(Vctl *v); int xenintrvecno(int irq); int xenintrdisable(int irq); void xentimerenable(void); uvlong xentimerread(uvlong*); void xentimerset(uvlong); PCArch archxen = { .id= "Xen", .ident= identify, .reset= shutdown, .intrinit= intrinit, .intrenable= xenintrenable, .intrvecno= xenintrvecno, .intrdisable= xenintrdisable, .clockenable= xentimerenable, .fastclock= xentimerread, .timerset= xentimerset, }; /* * Placeholders to satisfy external references in generic devarch.c */ ulong getcr4(void) { return 0; } void putcr4(ulong) {} int inb(int) { return 0; } ushort ins(int) { return 0; } ulong inl(int) { return 0; } void outb(int, int) {} void outs(int, ushort) {} void outl(int, ulong) {} void i8042reset(void) {} void i8253enable(void) {} void i8253init(void) {} void i8253link(void) {} uvlong i8253read(uvlong*) { return 0; } void i8253timerset(uvlong) {} int i8259disable(int) { return 0; } int i8259enable(Vctl*) { return 0; } void i8259init(void) {} int i8259isr(int) { return 0; } void i8259on(void) {} void i8259off(void) {} int i8259vecno(int) { return 0; } int mtrrprint(char*, long) { return 0; } char* mtrr(uvlong, uvlong, char *) { return nil; } void mtrrsync(void) {} /* * XXX until fpsave is debugged */ void fpssesave(FPsave* f) { fpx87save(f); } void fpsserestore(FPsave* f) { fpx87restore(f); }