#include <mach_assert.h>
#include <string.h>
#include <mach/boolean.h>
#include <mach/i386/vm_types.h>
#include <mach/i386/vm_param.h>
#include <kern/kern_types.h>
#include <kern/misc_protos.h>
#include <sys/errno.h>
#include <i386/param.h>
#include <i386/misc_protos.h>
#include <i386/cpu_data.h>
#include <i386/machine_routines.h>
#include <i386/cpuid.h>
#include <i386/vmx.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <vm/vm_fault.h>
#include <libkern/OSAtomic.h>
#include <sys/kdebug.h>
#if 0
#undef KERNEL_DEBUG
#define KERNEL_DEBUG KERNEL_DEBUG_CONSTANT
#define KDEBUG 1
#endif
extern void invalidate_icache64(addr64_t addr, unsigned cnt, int phys);
extern void flush_dcache64(addr64_t addr, unsigned count, int phys);
extern boolean_t phys_page_exists(ppnum_t);
extern void bcopy_no_overwrite(const char *from, char *to,vm_size_t bytes);
extern void pmap_set_reference(ppnum_t pn);
extern void mapping_set_mod(ppnum_t pa);
extern void mapping_set_ref(ppnum_t pn);
extern void ovbcopy(const char *from,
char *to,
vm_size_t nbytes);
void machine_callstack(natural_t *buf, vm_size_t callstack_max);
#define value_64bit(value) ((value) & 0xFFFFFFFF00000000LL)
#define low32(x) ((unsigned int)((x) & 0x00000000FFFFFFFFLL))
#define JOE_DEBUG 0
void
bzero_phys_nc(
addr64_t src64,
uint32_t bytes)
{
bzero_phys(src64,bytes);
}
void
bzero_phys(
addr64_t src64,
uint32_t bytes)
{
mapwindow_t *map;
mp_disable_preemption();
map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | ((pmap_paddr_t)src64 & PG_FRAME) | INTEL_PTE_REF | INTEL_PTE_MOD));
bzero((void *)((uintptr_t)map->prv_CADDR | ((uint32_t)src64 & INTEL_OFFMASK)), bytes);
pmap_put_mapwindow(map);
mp_enable_preemption();
}
void
bcopy_phys(
addr64_t src64,
addr64_t dst64,
vm_size_t bytes)
{
mapwindow_t *src_map, *dst_map;
if ( ((((uint32_t)src64 & (NBPG-1)) + bytes) > NBPG) || ((((uint32_t)dst64 & (NBPG-1)) + bytes) > NBPG) ) {
panic("bcopy_phys alignment");
}
mp_disable_preemption();
src_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | ((pmap_paddr_t)src64 & PG_FRAME) | INTEL_PTE_REF));
dst_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | ((pmap_paddr_t)dst64 & PG_FRAME) |
INTEL_PTE_REF | INTEL_PTE_MOD));
bcopy((void *) ((uintptr_t)src_map->prv_CADDR | ((uint32_t)src64 & INTEL_OFFMASK)),
(void *) ((uintptr_t)dst_map->prv_CADDR | ((uint32_t)dst64 & INTEL_OFFMASK)), bytes);
pmap_put_mapwindow(src_map);
pmap_put_mapwindow(dst_map);
mp_enable_preemption();
}
int
apply_func_phys(
addr64_t dst64,
vm_size_t bytes,
int (*func)(void * buffer, vm_size_t bytes, void * arg),
void * arg)
{
mapwindow_t *dst_map;
int rc = -1;
if ( ((((uint32_t)dst64 & (NBPG-1)) + bytes) > NBPG) ) {
panic("apply_func_phys alignment");
}
mp_disable_preemption();
dst_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | ((pmap_paddr_t)dst64 & PG_FRAME) |
INTEL_PTE_REF | INTEL_PTE_MOD));
rc = func((void *)((uintptr_t)dst_map->prv_CADDR | ((uint32_t)dst64 & INTEL_OFFMASK)), bytes, arg);
pmap_put_mapwindow(dst_map);
mp_enable_preemption();
return rc;
}
void
ovbcopy(
const char *from,
char *to,
vm_size_t bytes)
{
if (from + bytes <= to || to + bytes <= from || to == from)
bcopy_no_overwrite(from, to, bytes);
else if (from > to)
bcopy_no_overwrite(from, to, bytes);
else {
from += bytes - 1;
to += bytes - 1;
while (bytes-- > 0)
*to-- = *from--;
}
}
static unsigned int
ml_phys_read_data(pmap_paddr_t paddr, int size )
{
mapwindow_t *map;
unsigned int result;
mp_disable_preemption();
map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | (paddr & PG_FRAME) | INTEL_PTE_REF));
switch (size) {
unsigned char s1;
unsigned short s2;
case 1:
s1 = *(unsigned char *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK));
result = s1;
break;
case 2:
s2 = *(unsigned short *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK));
result = s2;
break;
case 4:
default:
result = *(unsigned int *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK));
break;
}
pmap_put_mapwindow(map);
mp_enable_preemption();
return result;
}
static unsigned long long
ml_phys_read_long_long(pmap_paddr_t paddr )
{
mapwindow_t *map;
unsigned long long result;
mp_disable_preemption();
map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | (paddr & PG_FRAME) | INTEL_PTE_REF));
result = *(unsigned long long *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK));
pmap_put_mapwindow(map);
mp_enable_preemption();
return result;
}
unsigned int ml_phys_read( vm_offset_t paddr)
{
return ml_phys_read_data((pmap_paddr_t)paddr, 4);
}
unsigned int ml_phys_read_word(vm_offset_t paddr) {
return ml_phys_read_data((pmap_paddr_t)paddr, 4);
}
unsigned int ml_phys_read_64(addr64_t paddr64)
{
return ml_phys_read_data((pmap_paddr_t)paddr64, 4);
}
unsigned int ml_phys_read_word_64(addr64_t paddr64)
{
return ml_phys_read_data((pmap_paddr_t)paddr64, 4);
}
unsigned int ml_phys_read_half(vm_offset_t paddr)
{
return ml_phys_read_data((pmap_paddr_t)paddr, 2);
}
unsigned int ml_phys_read_half_64(addr64_t paddr64)
{
return ml_phys_read_data((pmap_paddr_t)paddr64, 2);
}
unsigned int ml_phys_read_byte(vm_offset_t paddr)
{
return ml_phys_read_data((pmap_paddr_t)paddr, 1);
}
unsigned int ml_phys_read_byte_64(addr64_t paddr64)
{
return ml_phys_read_data((pmap_paddr_t)paddr64, 1);
}
unsigned long long ml_phys_read_double(vm_offset_t paddr)
{
return ml_phys_read_long_long((pmap_paddr_t)paddr);
}
unsigned long long ml_phys_read_double_64(addr64_t paddr64)
{
return ml_phys_read_long_long((pmap_paddr_t)paddr64);
}
static void
ml_phys_write_data(pmap_paddr_t paddr, unsigned long data, int size)
{
mapwindow_t *map;
mp_disable_preemption();
map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | (paddr & PG_FRAME) |
INTEL_PTE_REF | INTEL_PTE_MOD));
switch (size) {
case 1:
*(unsigned char *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK)) = (unsigned char)data;
break;
case 2:
*(unsigned short *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK)) = (unsigned short)data;
break;
case 4:
default:
*(unsigned int *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK)) = (uint32_t)data;
break;
}
pmap_put_mapwindow(map);
mp_enable_preemption();
}
static void
ml_phys_write_long_long(pmap_paddr_t paddr, unsigned long long data)
{
mapwindow_t *map;
mp_disable_preemption();
map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | (paddr & PG_FRAME) |
INTEL_PTE_REF | INTEL_PTE_MOD));
*(unsigned long long *)((uintptr_t)map->prv_CADDR | ((uint32_t)paddr & INTEL_OFFMASK)) = data;
pmap_put_mapwindow(map);
mp_enable_preemption();
}
void ml_phys_write_byte(vm_offset_t paddr, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr, data, 1);
}
void ml_phys_write_byte_64(addr64_t paddr64, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr64, data, 1);
}
void ml_phys_write_half(vm_offset_t paddr, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr, data, 2);
}
void ml_phys_write_half_64(addr64_t paddr64, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr64, data, 2);
}
void ml_phys_write(vm_offset_t paddr, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr, data, 4);
}
void ml_phys_write_64(addr64_t paddr64, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr64, data, 4);
}
void ml_phys_write_word(vm_offset_t paddr, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr, data, 4);
}
void ml_phys_write_word_64(addr64_t paddr64, unsigned int data)
{
ml_phys_write_data((pmap_paddr_t)paddr64, data, 4);
}
void ml_phys_write_double(vm_offset_t paddr, unsigned long long data)
{
ml_phys_write_long_long((pmap_paddr_t)paddr, data);
}
void ml_phys_write_double_64(addr64_t paddr64, unsigned long long data)
{
ml_phys_write_long_long((pmap_paddr_t)paddr64, data);
}
boolean_t
ml_probe_read(vm_offset_t paddr, unsigned int *val)
{
if ((PAGE_SIZE - (paddr & PAGE_MASK)) < 4)
return FALSE;
*val = ml_phys_read(paddr);
return TRUE;
}
boolean_t
ml_probe_read_64(addr64_t paddr64, unsigned int *val)
{
if ((PAGE_SIZE - (paddr64 & PAGE_MASK)) < 4)
return FALSE;
*val = ml_phys_read_64((pmap_paddr_t)paddr64);
return TRUE;
}
int bcmp(
const void *pa,
const void *pb,
size_t len)
{
const char *a = (const char *)pa;
const char *b = (const char *)pb;
if (len == 0)
return 0;
do
if (*a++ != *b++)
break;
while (--len);
return (int)len;
}
int
memcmp(const void *s1, const void *s2, size_t n)
{
if (n != 0) {
const unsigned char *p1 = s1, *p2 = s2;
do {
if (*p1++ != *p2++)
return (*--p1 - *--p2);
} while (--n != 0);
}
return (0);
}
size_t
strlen(
register const char *string)
{
register const char *ret = string;
while (*string++ != '\0')
continue;
return string - 1 - ret;
}
uint32_t
hw_compare_and_store(uint32_t oldval, uint32_t newval, volatile uint32_t *dest)
{
return OSCompareAndSwap((UInt32)oldval,
(UInt32)newval,
(volatile UInt32 *)dest);
}
#if MACH_ASSERT
void machine_callstack(
__unused natural_t *buf,
__unused vm_size_t callstack_max)
{
}
#endif
void fillPage(ppnum_t pa, unsigned int fill)
{
mapwindow_t *map;
pmap_paddr_t src;
int i;
int cnt = PAGE_SIZE/sizeof(unsigned int);
unsigned int *addr;
mp_disable_preemption();
src = i386_ptob(pa);
map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | (src & PG_FRAME) |
INTEL_PTE_REF | INTEL_PTE_MOD));
for (i = 0, addr = (unsigned int *)map->prv_CADDR; i < cnt ; i++ )
*addr++ = fill;
pmap_put_mapwindow(map);
mp_enable_preemption();
}
static inline void __sfence(void)
{
__asm__ volatile("sfence");
}
static inline void __mfence(void)
{
__asm__ volatile("mfence");
}
static inline void __wbinvd(void)
{
__asm__ volatile("wbinvd");
}
static inline void __clflush(void *ptr)
{
__asm__ volatile("clflush (%0)" : : "r" (ptr));
}
void dcache_incoherent_io_store64(addr64_t pa, unsigned int count)
{
mapwindow_t *map;
uint32_t linesize = cpuid_info()->cache_linesize;
addr64_t addr;
uint32_t offset, chunk;
boolean_t istate;
__mfence();
istate = ml_set_interrupts_enabled(FALSE);
offset = (uint32_t)(pa & (linesize - 1));
addr = pa - offset;
map = pmap_get_mapwindow((pt_entry_t)(i386_ptob(atop_64(addr)) | INTEL_PTE_VALID));
count += offset;
offset = (uint32_t)(addr & ((addr64_t) (page_size - 1)));
chunk = (uint32_t)page_size - offset;
do
{
if (chunk > count)
chunk = count;
for (; offset < chunk; offset += linesize)
__clflush((void *)(((uintptr_t)map->prv_CADDR) + offset));
count -= chunk;
addr += chunk;
chunk = (uint32_t) page_size;
offset = 0;
if (count) {
pmap_store_pte(map->prv_CMAP, (pt_entry_t)(i386_ptob(atop_64(addr)) | INTEL_PTE_VALID));
invlpg((uintptr_t)map->prv_CADDR);
}
}
while (count);
pmap_put_mapwindow(map);
(void) ml_set_interrupts_enabled(istate);
__mfence();
}
void dcache_incoherent_io_flush64(addr64_t pa, unsigned int count)
{
return(dcache_incoherent_io_store64(pa,count));
}
void
flush_dcache64(addr64_t addr, unsigned count, int phys)
{
if (phys) {
dcache_incoherent_io_flush64(addr, count);
}
else {
uint32_t linesize = cpuid_info()->cache_linesize;
addr64_t bound = (addr + count + linesize - 1) & ~(linesize - 1);
__mfence();
while (addr < bound) {
__clflush((void *) (uintptr_t) addr);
addr += linesize;
}
__mfence();
}
}
void
invalidate_icache64(__unused addr64_t addr,
__unused unsigned count,
__unused int phys)
{
}
addr64_t vm_last_addr;
void
mapping_set_mod(ppnum_t pn)
{
pmap_set_modify(pn);
}
void
mapping_set_ref(ppnum_t pn)
{
pmap_set_reference(pn);
}
void
cache_flush_page_phys(ppnum_t pa)
{
mapwindow_t *map;
boolean_t istate;
int i;
unsigned char *cacheline_addr;
int cacheline_size = cpuid_info()->cache_linesize;
int cachelines_in_page = PAGE_SIZE/cacheline_size;
__mfence();
istate = ml_set_interrupts_enabled(FALSE);
map = pmap_get_mapwindow((pt_entry_t)(i386_ptob(pa) | INTEL_PTE_VALID));
for (i = 0, cacheline_addr = (unsigned char *)map->prv_CADDR;
i < cachelines_in_page;
i++, cacheline_addr += cacheline_size) {
__clflush((void *) cacheline_addr);
}
pmap_put_mapwindow(map);
(void) ml_set_interrupts_enabled(istate);
__mfence();
}
#if !MACH_KDP
void
kdp_register_callout(void)
{
}
#endif
#if !CONFIG_VMX
int host_vmxon(boolean_t exclusive __unused)
{
return VMX_UNSUPPORTED;
}
void host_vmxoff(void)
{
return;
}
#endif
#ifdef __LP64__
#define INT_SIZE (BYTE_SIZE * sizeof (int))
void
setbit(int bitno, int *s)
{
s[bitno / INT_SIZE] |= 1 << (bitno % INT_SIZE);
}
void
clrbit(int bitno, int *s)
{
s[bitno / INT_SIZE] &= ~(1 << (bitno % INT_SIZE));
}
int
testbit(int bitno, int *s)
{
return s[bitno / INT_SIZE] & (1 << (bitno % INT_SIZE));
}
int
ffsbit(int *s)
{
int offset;
for (offset = 0; !*s; offset += (int)INT_SIZE, ++s);
return offset + __builtin_ctz(*s);
}
int
ffs(unsigned int mask)
{
if (mask == 0)
return 0;
return 1 + __builtin_ctz(mask);
}
#endif