#include <sys/errno.h>
#include <mach/mach_types.h>
#include <mach/vm_attributes.h>
#include <mach/vm_param.h>
#include <libsa/types.h>
#include <vm/vm_map.h>
#include <i386/pmap.h>
#include <i386/pmap_internal.h>
#include <i386/mp.h>
#include <i386/misc_protos.h>
#include <i386/pio.h>
#include <i386/proc_reg.h>
#include <i386/pmap_internal.h>
#include <kdp/kdp_internal.h>
#include <kdp/kdp_core.h>
#include <kdp/ml/i386/kdp_x86_common.h>
#include <mach/vm_map.h>
#include <vm/vm_protos.h>
#include <vm/vm_kern.h>
#include <machine/pal_routines.h>
#include <libkern/kernel_mach_header.h>
#define IS_PHYS_ADDR(addr) IS_USERADDR64_CANONICAL(addr)
boolean_t kdp_read_io;
boolean_t kdp_trans_off;
pmap_paddr_t kdp_vtophys(pmap_t pmap, vm_offset_t va);
pmap_t kdp_pmap = 0;
pmap_paddr_t
kdp_vtophys(
pmap_t pmap,
vm_offset_t va)
{
pmap_paddr_t pa;
ppnum_t pp;
pp = pmap_find_phys(pmap, va);
if(!pp) return 0;
pa = ((pmap_paddr_t)pp << PAGE_SHIFT) | (va & PAGE_MASK);
return(pa);
}
mach_vm_size_t
kdp_machine_vm_read( mach_vm_address_t src, caddr_t dst, mach_vm_size_t len)
{
addr64_t cur_virt_src = PAL_KDP_ADDR((addr64_t)src);
addr64_t cur_virt_dst = PAL_KDP_ADDR((addr64_t)(intptr_t)dst);
addr64_t cur_phys_dst, cur_phys_src;
mach_vm_size_t resid = len;
mach_vm_size_t cnt = 0, cnt_src, cnt_dst;
pmap_t src_pmap = kernel_pmap;
#ifdef KDP_VM_READ_DEBUG
printf("kdp_vm_read: src %llx dst %p len %llx\n", src, (void *)dst, len);
#endif
if (kdp_trans_off && IS_PHYS_ADDR(src)) {
kdp_readphysmem64_req_t rq;
mach_vm_size_t ret;
rq.address = src;
rq.nbytes = (uint32_t)len;
ret = kdp_machine_phys_read(&rq, dst, KDP_CURRENT_LCPU);
return ret;
}
if (kdp_pmap)
src_pmap = kdp_pmap;
while (resid != 0) {
if (!(cur_phys_src = kdp_vtophys(src_pmap,
cur_virt_src)))
goto exit;
if(!(cur_phys_dst = kdp_vtophys(kernel_pmap, cur_virt_dst)))
goto exit;
if (kdp_read_io == FALSE)
if (!pmap_valid_page(i386_btop(cur_phys_dst)) || !pmap_valid_page(i386_btop(cur_phys_src)))
goto exit;
cnt_src = PAGE_SIZE - (cur_phys_src & PAGE_MASK);
cnt_dst = PAGE_SIZE - (cur_phys_dst & PAGE_MASK);
if (cnt_src > cnt_dst)
cnt = cnt_dst;
else
cnt = cnt_src;
if (cnt > resid)
cnt = resid;
if (EFAULT == ml_copy_phys(cur_phys_src,
cur_phys_dst,
(vm_size_t)cnt))
goto exit;
cur_virt_src += cnt;
cur_virt_dst += cnt;
resid -= cnt;
}
exit:
return (len - resid);
}
mach_vm_size_t
kdp_machine_phys_read(kdp_readphysmem64_req_t *rq, caddr_t dst,
uint16_t lcpu)
{
mach_vm_address_t src = rq->address;
mach_vm_size_t len = rq->nbytes;
addr64_t cur_virt_dst;
addr64_t cur_phys_dst, cur_phys_src;
mach_vm_size_t resid = len;
mach_vm_size_t cnt = 0, cnt_src, cnt_dst;
if ((lcpu != KDP_CURRENT_LCPU) && (lcpu != cpu_number())) {
return (mach_vm_size_t)
kdp_x86_xcpu_invoke(lcpu, (kdp_x86_xcpu_func_t)kdp_machine_phys_read, rq, dst);
}
#ifdef KDP_VM_READ_DEBUG
printf("kdp_phys_read: src %llx dst %p len %llx\n", src, (void *)dst, len);
#endif
cur_virt_dst = (addr64_t)(intptr_t)dst;
cur_phys_src = (addr64_t)src;
while (resid != 0) {
if(!(cur_phys_dst = kdp_vtophys(kernel_pmap, cur_virt_dst)))
goto exit;
cnt_src = PAGE_SIZE - (cur_phys_src & PAGE_MASK);
cnt_dst = PAGE_SIZE - (cur_phys_dst & PAGE_MASK);
if (cnt_src > cnt_dst)
cnt = cnt_dst;
else
cnt = cnt_src;
if (cnt > resid)
cnt = resid;
if (EFAULT == ml_copy_phys(cur_phys_src,
cur_phys_dst,
(vm_size_t)cnt))
goto exit;
cur_phys_src += cnt;
cur_virt_dst += cnt;
resid -= cnt;
}
exit:
return (len - resid);
}
mach_vm_size_t
kdp_machine_vm_write( caddr_t src, mach_vm_address_t dst, mach_vm_size_t len)
{
addr64_t cur_virt_src, cur_virt_dst;
addr64_t cur_phys_src, cur_phys_dst;
unsigned resid, cnt, cnt_src, cnt_dst;
#ifdef KDP_VM_WRITE_DEBUG
printf("kdp_vm_write: src %p dst %llx len %llx - %08X %08X\n", (void *)src, dst, len, ((unsigned int *)src)[0], ((unsigned int *)src)[1]);
#endif
cur_virt_src = PAL_KDP_ADDR((addr64_t)(intptr_t)src);
cur_virt_dst = PAL_KDP_ADDR((addr64_t)dst);
resid = (unsigned)len;
while (resid != 0) {
if ((cur_phys_dst = kdp_vtophys(kernel_pmap, cur_virt_dst)) == 0)
goto exit;
if ((cur_phys_src = kdp_vtophys(kernel_pmap, cur_virt_src)) == 0)
goto exit;
cnt_src = (unsigned)(PAGE_SIZE - (cur_phys_src & PAGE_MASK));
cnt_dst = (unsigned)(PAGE_SIZE - (cur_phys_dst & PAGE_MASK));
if (cnt_src > cnt_dst)
cnt = cnt_dst;
else
cnt = cnt_src;
if (cnt > resid)
cnt = resid;
if (EFAULT == ml_copy_phys(cur_phys_src, cur_phys_dst, cnt))
goto exit;
cur_virt_src +=cnt;
cur_virt_dst +=cnt;
resid -= cnt;
}
exit:
return (len - resid);
}
mach_vm_size_t
kdp_machine_phys_write(kdp_writephysmem64_req_t *rq, caddr_t src,
uint16_t lcpu)
{
mach_vm_address_t dst = rq->address;
mach_vm_size_t len = rq->nbytes;
addr64_t cur_virt_src;
addr64_t cur_phys_src, cur_phys_dst;
unsigned resid, cnt, cnt_src, cnt_dst;
if ((lcpu != KDP_CURRENT_LCPU) && (lcpu != cpu_number())) {
return (mach_vm_size_t)
kdp_x86_xcpu_invoke(lcpu, (kdp_x86_xcpu_func_t)kdp_machine_phys_write, rq, src);
}
#ifdef KDP_VM_WRITE_DEBUG
printf("kdp_phys_write: src %p dst %llx len %llx - %08X %08X\n", (void *)src, dst, len, ((unsigned int *)src)[0], ((unsigned int *)src)[1]);
#endif
cur_virt_src = (addr64_t)(intptr_t)src;
cur_phys_dst = (addr64_t)dst;
resid = (unsigned)len;
while (resid != 0) {
if ((cur_phys_src = kdp_vtophys(kernel_pmap, cur_virt_src)) == 0)
goto exit;
cnt_src = (unsigned)(PAGE_SIZE - (cur_phys_src & PAGE_MASK));
cnt_dst = (unsigned)(PAGE_SIZE - (cur_phys_dst & PAGE_MASK));
if (cnt_src > cnt_dst)
cnt = cnt_dst;
else
cnt = cnt_src;
if (cnt > resid)
cnt = resid;
if (EFAULT == ml_copy_phys(cur_phys_src, cur_phys_dst, cnt))
goto exit;
cur_virt_src +=cnt;
cur_phys_dst +=cnt;
resid -= cnt;
}
exit:
return (len - resid);
}
int
kdp_machine_ioport_read(kdp_readioport_req_t *rq, caddr_t data, uint16_t lcpu)
{
uint16_t addr = rq->address;
uint16_t size = rq->nbytes;
if ((lcpu != KDP_CURRENT_LCPU) && (lcpu != cpu_number())) {
return (int) kdp_x86_xcpu_invoke(lcpu, (kdp_x86_xcpu_func_t)kdp_machine_ioport_read, rq, data);
}
switch (size)
{
case 1:
*((uint8_t *) data) = inb(addr);
break;
case 2:
*((uint16_t *) data) = inw(addr);
break;
case 4:
*((uint32_t *) data) = inl(addr);
break;
default:
return KDPERR_BADFLAVOR;
}
return KDPERR_NO_ERROR;
}
int
kdp_machine_ioport_write(kdp_writeioport_req_t *rq, caddr_t data, uint16_t lcpu)
{
uint16_t addr = rq->address;
uint16_t size = rq->nbytes;
if ((lcpu != KDP_CURRENT_LCPU) && (lcpu != cpu_number())) {
return (int) kdp_x86_xcpu_invoke(lcpu, (kdp_x86_xcpu_func_t)kdp_machine_ioport_write, rq, data);
}
switch (size)
{
case 1:
outb(addr, *((uint8_t *) data));
break;
case 2:
outw(addr, *((uint16_t *) data));
break;
case 4:
outl(addr, *((uint32_t *) data));
break;
default:
return KDPERR_BADFLAVOR;
}
return KDPERR_NO_ERROR;
}
int
kdp_machine_msr64_read(kdp_readmsr64_req_t *rq, caddr_t data, uint16_t lcpu)
{
uint64_t *value = (uint64_t *) data;
uint32_t msr = rq->address;
if ((lcpu != KDP_CURRENT_LCPU) && (lcpu != cpu_number())) {
return (int) kdp_x86_xcpu_invoke(lcpu, (kdp_x86_xcpu_func_t)kdp_machine_msr64_read, rq, data);
}
*value = rdmsr64(msr);
return KDPERR_NO_ERROR;
}
int
kdp_machine_msr64_write(kdp_writemsr64_req_t *rq, caddr_t data, uint16_t lcpu)
{
uint64_t *value = (uint64_t *) data;
uint32_t msr = rq->address;
if ((lcpu != KDP_CURRENT_LCPU) && (lcpu != cpu_number())) {
return (int) kdp_x86_xcpu_invoke(lcpu, (kdp_x86_xcpu_func_t)kdp_machine_msr64_write, rq, data);
}
wrmsr64(msr, *value);
return KDPERR_NO_ERROR;
}
pt_entry_t *debugger_ptep;
vm_map_offset_t debugger_window_kva;
void
kdp_machine_init(void) {
if (debug_boot_arg == 0)
return;
vm_map_entry_t e;
kern_return_t kr;
kr = vm_map_find_space(kernel_map,
&debugger_window_kva,
PAGE_SIZE, 0,
0,
VM_MAP_KERNEL_FLAGS_NONE,
VM_KERN_MEMORY_OSFMK,
&e);
if (kr != KERN_SUCCESS) {
panic("%s: vm_map_find_space failed with %d\n", __FUNCTION__, kr);
}
vm_map_unlock(kernel_map);
debugger_ptep = pmap_pte(kernel_pmap, debugger_window_kva);
if (debugger_ptep == NULL) {
pmap_expand(kernel_pmap, debugger_window_kva, PMAP_EXPAND_OPTIONS_NONE);
debugger_ptep = pmap_pte(kernel_pmap, debugger_window_kva);
}
}