Subversion Repositories HelenOS

Rev

Rev 977 | Rev 1064 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 977 Rev 1063
Line 24... Line 24...
24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
 27 
 */
28 
 
 28 
 
- 
 
 29 
/** Paging on AMD64
- 
 
 30 
 *
- 
 
 31 
 * The space is divided in positive numbers - userspace and
- 
 
 32 
 * negative numbers - kernel space. The 'negative' space starting
- 
 
 33 
 * with 0xffff800000000000 and ending with 0xffffffff80000000
- 
 
 34 
 * (-2GB) is identically mapped physical memory. The area
- 
 
 35 
 * (0xffffffff80000000 ... 0xffffffffffffffff is again identically
- 
 
 36 
 * mapped first 2GB.
- 
 
 37 
 *
- 
 
 38 
 * ATTENTION - PA2KA(KA2PA(x)) != x if 'x' is in kernel
- 
 
 39 
 */
- 
 
 40 
 
29 
#ifndef __amd64_PAGE_H__
 41 
#ifndef __amd64_PAGE_H__
30 
#define __amd64_PAGE_H__
 42 
#define __amd64_PAGE_H__
31 
 
 43 
 
32 
#include <arch/mm/frame.h>
 44 
#include <arch/mm/frame.h>
33 
 
 45 
 
Line 40... Line 52...
40 
#  include <mm/page.h>
 52 
#  include <mm/page.h>
41 
#  include <arch/types.h>
 53 
#  include <arch/types.h>
42 
#endif
 54 
#endif
43 
 
 55 
 
44 
#ifndef __ASM__
 56 
#ifndef __ASM__
- 
 
 57 
static inline __address ka2pa(__address x)
- 
 
 58 
{
- 
 
 59 
    if (x > 0xffffffff80000000)
- 
 
 60 
        return x - 0xffffffff80000000;
- 
 
 61 
    else
- 
 
 62 
        return x - 0xffff800000000000;
- 
 
 63 
}
- 
 
 64 
/* Linker symbol */
- 
 
 65 
extern int ktext_start;
- 
 
 66 
extern int kdata_end;
- 
 
 67 
static inline __address pa2ka(__address x)
- 
 
 68 
{
- 
 
 69 
    if (x >= ka2pa((__address)(&kdata_end)) || \
- 
 
 70 
        x <= ka2pa((__address)&ktext_start))
- 
 
 71 
        return x + 0xffff800000000000;
- 
 
 72 
    else
- 
 
 73 
        return x + 0xffffffff80000000;
- 
 
 74 
}
- 
 
 75 
# define KA2PA(x)      ka2pa((__address)x)
- 
 
 76 
# define PA2KA(x)      pa2ka((__address)x)
45 
# define KA2PA(x)      (((__address) (x)) - 0xffffffff80000000)
 77 
# define PA2KA_IDENT(x)      (((__address) (x)) + 0xffff800000000000)
46 
# define PA2KA(x)      (((__address) (x)) + 0xffffffff80000000)
 78 
# define PA2KA_CODE(x)      (((__address) (x)) + 0xffffffff80000000)
47 
#else
 79 
#else
48 
# define KA2PA(x)      ((x) - 0xffffffff80000000)
 80 
# define KA2PA(x)      ((x) - 0xffffffff80000000)
49 
# define PA2KA(x)      ((x) + 0xffffffff80000000)
 81 
# define PA2KA(x)      ((x) + 0xffffffff80000000)
- 
 
 82 
# define PA2KA_DATA(x)      ((x) + 0xffff800000000000)
50 
#endif
 83 
#endif
51 
 
 84 
 
52 
#define PTL0_ENTRIES_ARCH   512
 85 
#define PTL0_ENTRIES_ARCH   512
53 
#define PTL1_ENTRIES_ARCH   512
 86 
#define PTL1_ENTRIES_ARCH   512
54 
#define PTL2_ENTRIES_ARCH   512
 87 
#define PTL2_ENTRIES_ARCH   512