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Differential D16802 Diff 46938 head/sys/x86/x86/mptable.c

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head/sys/x86/x86/mptable.c

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#include <dev/pci/pcib_private.h> #include <dev/pci/pcib_private.h>
#endif #endif
#include <x86/apicreg.h> #include <x86/apicreg.h>
#include <x86/mptable.h> #include <x86/mptable.h>
#include <machine/frame.h> #include <machine/frame.h>
#include <machine/intr_machdep.h> #include <machine/intr_machdep.h>
#include <x86/apicvar.h> #include <x86/apicvar.h>
#include <machine/md_var.h> #include <machine/md_var.h>
#include <machine/pc/bios.h>
#ifdef NEW_PCIB #ifdef NEW_PCIB
#include <machine/resource.h> #include <machine/resource.h>
#endif #endif
#include <machine/specialreg.h> #include <machine/specialreg.h>
/* string defined by the Intel MP Spec as identifying the MP table */ /* string defined by the Intel MP Spec as identifying the MP table */
#define MP_SIG 0x5f504d5f /* _MP_ */ #define MP_SIG 0x5f504d5f /* _MP_ */
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*/ */
static int static int
search_for_sig(u_int32_t target, int count) search_for_sig(u_int32_t target, int count)
{ {
int x; int x;
u_int32_t *addr; u_int32_t *addr;
#ifdef __amd64__ addr = (u_int32_t *)BIOS_PADDRTOVADDR(target);
addr = (u_int32_t *) (KERNBASE + target);
#else /* __i386__ */
addr = (u_int32_t *) (PMAP_MAP_LOW + target);
#endif
for (x = 0; x < count; x += 4) for (x = 0; x < count; x += 4)
if (addr[x] == MP_SIG) if (addr[x] == MP_SIG)
/* make array index a byte index */ /* make array index a byte index */
return (target + (x * sizeof(u_int32_t))); return (target + (x * sizeof(u_int32_t)));
return (-1); return (-1);
} }
static int static int
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static int static int
mptable_probe(void) mptable_probe(void)
{ {
int x; int x;
u_long segment; u_long segment;
u_int32_t target; u_int32_t target;
/* see if EBDA exists */ /* see if EBDA exists */
if ((segment = (u_long) * (u_short *) ( if ((segment = *(u_short *)BIOS_PADDRTOVADDR(0x40e)) != 0) {
#ifdef __amd64__
KERNBASE
#else /* __i386__ */
PMAP_MAP_LOW
#endif
+ 0x40e)) != 0) {
/* search first 1K of EBDA */ /* search first 1K of EBDA */
target = (u_int32_t) (segment << 4); target = (u_int32_t) (segment << 4);
if ((x = search_for_sig(target, 1024 / 4)) >= 0) if ((x = search_for_sig(target, 1024 / 4)) >= 0)
goto found; goto found;
} else { } else {
/* last 1K of base memory, effective 'top of base' passed in */ /* last 1K of base memory, effective 'top of base' passed in */
target = (u_int32_t) ((basemem * 1024) - 0x400); target = (u_int32_t) ((basemem * 1024) - 0x400);
if ((x = search_for_sig(target, 1024 / 4)) >= 0) if ((x = search_for_sig(target, 1024 / 4)) >= 0)
goto found; goto found;
} }
/* search the BIOS */ /* search the BIOS */
target = (u_int32_t) BIOS_BASE; target = (u_int32_t) BIOS_BASE;
if ((x = search_for_sig(target, BIOS_COUNT)) >= 0) if ((x = search_for_sig(target, BIOS_COUNT)) >= 0)
goto found; goto found;
/* nothing found */ /* nothing found */
return (ENXIO); return (ENXIO);
found: found:
mpfps = (mpfps_t)(KERNBASE + x); mpfps = (mpfps_t)BIOS_PADDRTOVADDR(x);
/* Map in the configuration table if it exists. */ /* Map in the configuration table if it exists. */
if (mpfps->config_type != 0) { if (mpfps->config_type != 0) {
if (bootverbose) if (bootverbose)
printf( printf(
"MP Table version 1.%d found using Default Configuration %d\n", "MP Table version 1.%d found using Default Configuration %d\n",
mpfps->spec_rev, mpfps->config_type); mpfps->spec_rev, mpfps->config_type);
if (mpfps->config_type != 5 && mpfps->config_type != 6) { if (mpfps->config_type != 5 && mpfps->config_type != 6) {
printf( printf(
"MP Table Default Configuration %d is unsupported\n", "MP Table Default Configuration %d is unsupported\n",
mpfps->config_type); mpfps->config_type);
return (ENXIO); return (ENXIO);
} }
mpct = NULL; mpct = NULL;
} else { } else {
if ((uintptr_t)mpfps->pap >= 1024 * 1024) { if ((uintptr_t)mpfps->pap >= 1024 * 1024) {
printf("%s: Unable to map MP Configuration Table\n", printf("%s: Unable to map MP Configuration Table\n",
__func__); __func__);
return (ENXIO); return (ENXIO);
} }
mpct = (mpcth_t)(KERNBASE + (uintptr_t)mpfps->pap); mpct = (mpcth_t)BIOS_PADDRTOVADDR((uintptr_t)mpfps->pap);
if (mpct->base_table_length + (uintptr_t)mpfps->pap >= if (mpct->base_table_length + (uintptr_t)mpfps->pap >=
1024 * 1024) { 1024 * 1024) {
printf("%s: Unable to map end of MP Config Table\n", printf("%s: Unable to map end of MP Config Table\n",
__func__); __func__);
return (ENXIO); return (ENXIO);
} }
if (mpct->extended_table_length != 0 && if (mpct->extended_table_length != 0 &&
mpct->extended_table_length + mpct->base_table_length + mpct->extended_table_length + mpct->base_table_length +
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