#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) & 0xFFFFFFFF00000000ULL)
#define low32(x) ((unsigned int)((x) & 0x00000000FFFFFFFFULL))
#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);
}
void
bzero_phys_nc(
addr64_t src64,
uint32_t bytes)
{
bzero_phys(src64,bytes);
}
void
bzero_phys(
addr64_t src64,
uint32_t bytes)
{
bzero(PHYSMAP_PTOV(src64), bytes);
}
void
bcopy_phys(
addr64_t src64,
addr64_t dst64,
vm_size_t bytes)
{
if (((((uint32_t)src64 & (NBPG-1)) + bytes) > NBPG) ||
((((uint32_t)dst64 & (NBPG-1)) + bytes) > NBPG) ) {
panic("bcopy_phys alignment");
}
bcopy(PHYSMAP_PTOV(src64), PHYSMAP_PTOV(dst64), bytes);
}
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)
{
unsigned int result;
switch (size) {
unsigned char s1;
unsigned short s2;
case 1:
s1 = *(unsigned char *)PHYSMAP_PTOV(paddr);
result = s1;
break;
case 2:
s2 = *(unsigned short *)PHYSMAP_PTOV(paddr);
result = s2;
break;
case 4:
default:
result = *(unsigned int *)PHYSMAP_PTOV(paddr);
break;
}
return result;
}
static unsigned long long
ml_phys_read_long_long(pmap_paddr_t paddr )
{
return *(unsigned long long *)PHYSMAP_PTOV(paddr);
}
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)
{
switch (size) {
case 1:
*(unsigned char *)PHYSMAP_PTOV(paddr) = (unsigned char)data;
break;
case 2:
*(unsigned short *)PHYSMAP_PTOV(paddr) = (unsigned short)data;
break;
case 4:
default:
*(unsigned int *)PHYSMAP_PTOV(paddr) = (unsigned int)data;
break;
}
}
static void
ml_phys_write_long_long(pmap_paddr_t paddr, unsigned long long data)
{
*(unsigned long long *)PHYSMAP_PTOV(paddr) = data;
}
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((pmap_paddr_t)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)
{
pmap_paddr_t src;
int i;
int cnt = PAGE_SIZE / sizeof(unsigned int);
unsigned int *addr;
src = i386_ptob(pa);
for (i = 0, addr = (unsigned int *)PHYSMAP_PTOV(src); i < cnt; i++)
*addr++ = fill;
}
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)
{
uint32_t linesize = cpuid_info()->cache_linesize;
addr64_t addr;
boolean_t istate;
__mfence();
istate = ml_set_interrupts_enabled(FALSE);
for (addr = pa; addr < pa + count; addr += linesize)
__clflush(PHYSMAP_PTOV(addr));
(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(__unused addr64_t addr,
__unused unsigned count,
__unused int phys)
{
}
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)
{
boolean_t istate;
unsigned char *cacheline_addr;
int cacheline_size = cpuid_info()->cache_linesize;
int cachelines_to_flush = PAGE_SIZE/cacheline_size;
__mfence();
istate = ml_set_interrupts_enabled(FALSE);
for (cacheline_addr = (unsigned char *)PHYSMAP_PTOV(i386_ptob(pa));
cachelines_to_flush > 0;
cachelines_to_flush--, cacheline_addr += cacheline_size) {
__clflush((void *) cacheline_addr);
}
(void) ml_set_interrupts_enabled(istate);
__mfence();
}
static int copyio(int, user_addr_t, char *, vm_size_t, vm_size_t *, int);
static int copyio_phys(addr64_t, addr64_t, vm_size_t, int);
extern int _bcopy(const void *, void *, vm_size_t);
extern int _bcopystr(const void *, void *, vm_size_t, vm_size_t *);
#define COPYIN 0
#define COPYOUT 1
#define COPYINSTR 2
#define COPYINPHYS 3
#define COPYOUTPHYS 4
static int
copyio(int copy_type, user_addr_t user_addr, char *kernel_addr,
vm_size_t nbytes, vm_size_t *lencopied, int use_kernel_map)
{
thread_t thread;
pmap_t pmap;
vm_size_t bytes_copied;
int error = 0;
boolean_t istate = FALSE;
boolean_t recursive_CopyIOActive;
#if KDEBUG
int debug_type = 0xeff70010;
debug_type += (copy_type << 2);
#endif
thread = current_thread();
KERNEL_DEBUG(debug_type | DBG_FUNC_START,
(unsigned)(user_addr >> 32), (unsigned)user_addr,
nbytes, thread->machine.copyio_state, 0);
if (nbytes == 0)
goto out;
pmap = thread->map->pmap;
if ((copy_type == COPYIN ||
copy_type == COPYINSTR ||
copy_type == COPYOUT) &&
(pmap != kernel_pmap) &&
((vm_offset_t)kernel_addr < VM_MIN_KERNEL_AND_KEXT_ADDRESS ||
!IS_USERADDR64_CANONICAL(user_addr))) {
error = EACCES;
goto out;
}
recursive_CopyIOActive = thread->machine.specFlags & CopyIOActive;
thread->machine.specFlags |= CopyIOActive;
if (no_shared_cr3) {
istate = ml_set_interrupts_enabled(FALSE);
if (get_cr3() != pmap->pm_cr3)
set_cr3(pmap->pm_cr3);
}
if ((pmap != kernel_pmap) && !use_kernel_map &&
(get_cr3() != pmap->pm_cr3)) {
panic("copyio(%d,%p,%p,%ld,%p,%d) cr3 is %p expects %p",
copy_type, (void *)user_addr, kernel_addr, nbytes, lencopied, use_kernel_map,
(void *) get_cr3(), (void *) pmap->pm_cr3);
}
if (no_shared_cr3)
(void) ml_set_interrupts_enabled(istate);
KERNEL_DEBUG(0xeff70044 | DBG_FUNC_NONE, (unsigned)user_addr,
(unsigned)kernel_addr, nbytes, 0, 0);
switch (copy_type) {
case COPYIN:
error = _bcopy((const void *) user_addr,
kernel_addr,
nbytes);
break;
case COPYOUT:
error = _bcopy(kernel_addr,
(void *) user_addr,
nbytes);
break;
case COPYINPHYS:
error = _bcopy((const void *) user_addr,
PHYSMAP_PTOV(kernel_addr),
nbytes);
break;
case COPYOUTPHYS:
error = _bcopy((const void *) PHYSMAP_PTOV(kernel_addr),
(void *) user_addr,
nbytes);
break;
case COPYINSTR:
error = _bcopystr((const void *) user_addr,
kernel_addr,
(int) nbytes,
&bytes_copied);
if (error != EFAULT)
*lencopied = bytes_copied;
if (error) {
#if KDEBUG
nbytes = *lencopied;
#endif
break;
}
if (*(kernel_addr + bytes_copied - 1) == 0) {
#if KDEBUG
nbytes = *lencopied;
#endif
break;
} else {
#if KDEBUG
nbytes = *lencopied;
#endif
error = ENAMETOOLONG;
break;
}
break;
}
if (!recursive_CopyIOActive)
thread->machine.specFlags &= ~CopyIOActive;
if (no_shared_cr3) {
istate = ml_set_interrupts_enabled(FALSE);
if (get_cr3() != kernel_pmap->pm_cr3)
set_cr3(kernel_pmap->pm_cr3);
(void) ml_set_interrupts_enabled(istate);
}
out:
KERNEL_DEBUG(debug_type | DBG_FUNC_END, (unsigned)user_addr,
(unsigned)kernel_addr, (unsigned)nbytes, error, 0);
return (error);
}
static int
copyio_phys(addr64_t source, addr64_t sink, vm_size_t csize, int which)
{
char *paddr;
user_addr_t vaddr;
int ctype;
if (which & cppvPsnk) {
paddr = (char *)sink;
vaddr = (user_addr_t)source;
ctype = COPYINPHYS;
} else {
paddr = (char *)source;
vaddr = (user_addr_t)sink;
ctype = COPYOUTPHYS;
}
return copyio(ctype, vaddr, paddr, csize, NULL, which & cppvKmap);
}
int
copyinmsg(const user_addr_t user_addr, char *kernel_addr, mach_msg_size_t nbytes)
{
return copyio(COPYIN, user_addr, kernel_addr, nbytes, NULL, 0);
}
int
copyin(const user_addr_t user_addr, char *kernel_addr, vm_size_t nbytes)
{
return copyio(COPYIN, user_addr, kernel_addr, nbytes, NULL, 0);
}
int
copyinstr(const user_addr_t user_addr, char *kernel_addr, vm_size_t nbytes, vm_size_t *lencopied)
{
*lencopied = 0;
return copyio(COPYINSTR, user_addr, kernel_addr, nbytes, lencopied, 0);
}
int
copyoutmsg(const char *kernel_addr, user_addr_t user_addr, mach_msg_size_t nbytes)
{
return copyio(COPYOUT, user_addr, (char *)(uintptr_t)kernel_addr, nbytes, NULL, 0);
}
int
copyout(const void *kernel_addr, user_addr_t user_addr, vm_size_t nbytes)
{
return copyio(COPYOUT, user_addr, (char *)(uintptr_t)kernel_addr, nbytes, NULL, 0);
}
kern_return_t
copypv(addr64_t src64, addr64_t snk64, unsigned int size, int which)
{
unsigned int lop, csize;
int bothphys = 0;
KERNEL_DEBUG(0xeff7004c | DBG_FUNC_START, (unsigned)src64,
(unsigned)snk64, size, which, 0);
if ((which & (cppvPsrc | cppvPsnk)) == 0 )
panic("copypv: no more than 1 parameter may be virtual\n");
if ((which & (cppvPsrc | cppvPsnk)) == (cppvPsrc | cppvPsnk))
bothphys = 1;
while (size) {
if (bothphys) {
lop = (unsigned int)(PAGE_SIZE - (snk64 & (PAGE_SIZE - 1)));
if (lop > (unsigned int)(PAGE_SIZE - (src64 & (PAGE_SIZE - 1))))
lop = (unsigned int)(PAGE_SIZE - (src64 & (PAGE_SIZE - 1)));
} else {
if (which & cppvPsrc)
lop = (unsigned int)(PAGE_SIZE - (src64 & (PAGE_SIZE - 1)));
else
lop = (unsigned int)(PAGE_SIZE - (snk64 & (PAGE_SIZE - 1)));
}
csize = size;
if (lop < size)
csize = lop;
#if 0
if (which & cppvFsrc)
flush_dcache64(src64, csize, 1);
if (which & cppvFsnk)
flush_dcache64(snk64, csize, 1);
#endif
if (bothphys)
bcopy_phys(src64, snk64, csize);
else {
if (copyio_phys(src64, snk64, csize, which))
return (KERN_FAILURE);
}
#if 0
if (which & cppvFsrc)
flush_dcache64(src64, csize, 1);
if (which & cppvFsnk)
flush_dcache64(snk64, csize, 1);
#endif
size -= csize;
snk64 += csize;
src64 += csize;
}
KERNEL_DEBUG(0xeff7004c | DBG_FUNC_END, (unsigned)src64,
(unsigned)snk64, size, which, 0);
return KERN_SUCCESS;
}
#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