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 * @{
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 * @{
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 */
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 */
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/** @file
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/** @file
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 */
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 */
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#ifndef __ppc32_PAGE_H__
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#ifndef KERN_ppc32_PAGE_H_
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#define __ppc32_PAGE_H__
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#define KERN_ppc32_PAGE_H_
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#include <arch/mm/frame.h>
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#include <arch/mm/frame.h>
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#define PAGE_WIDTH  FRAME_WIDTH
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#define PAGE_WIDTH  FRAME_WIDTH
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#define PAGE_SIZE   FRAME_SIZE
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#define PAGE_SIZE   FRAME_SIZE
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 * - PTL1 is not used
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 * - PTL1 is not used
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 * - PTL2 is not used
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 * - PTL2 is not used
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 * - PLT3 has 1024 entries (10 bits)
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 * - PLT3 has 1024 entries (10 bits)
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 */
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 */
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- 
 
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/* Number of entries in each level. */
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#define PTL0_ENTRIES_ARCH   1024
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#define PTL0_ENTRIES_ARCH   1024
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#define PTL1_ENTRIES_ARCH   0
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#define PTL1_ENTRIES_ARCH   0
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#define PTL2_ENTRIES_ARCH   0
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#define PTL2_ENTRIES_ARCH   0
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#define PTL3_ENTRIES_ARCH   1024
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#define PTL3_ENTRIES_ARCH   1024
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- 
 
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/* Page table sizes for each level. */
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#define PTL0_SIZE_ARCH       ONE_FRAME
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#define PTL0_SIZE_ARCH      ONE_FRAME
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#define PTL1_SIZE_ARCH       0
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#define PTL1_SIZE_ARCH      0
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#define PTL2_SIZE_ARCH       0
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#define PTL2_SIZE_ARCH      0
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#define PTL3_SIZE_ARCH       ONE_FRAME
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#define PTL3_SIZE_ARCH      ONE_FRAME
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- 
 
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/* Macros calculating indices into page tables on each level. */
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#define PTL0_INDEX_ARCH(vaddr)  (((vaddr) >> 22) & 0x3ff)
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#define PTL0_INDEX_ARCH(vaddr)  (((vaddr) >> 22) & 0x3ff)
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#define PTL1_INDEX_ARCH(vaddr)  0
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#define PTL1_INDEX_ARCH(vaddr)  0
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#define PTL2_INDEX_ARCH(vaddr)  0
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#define PTL2_INDEX_ARCH(vaddr)  0
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#define PTL3_INDEX_ARCH(vaddr)  (((vaddr) >> 12) & 0x3ff)
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#define PTL3_INDEX_ARCH(vaddr)  (((vaddr) >> 12) & 0x3ff)
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- 
 
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/* Get PTE address accessors for each level. */
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#define GET_PTL1_ADDRESS_ARCH(ptl0, i)      (((pte_t *) (ptl0))[(i)].pfn << 12)
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#define GET_PTL1_ADDRESS_ARCH(ptl0, i) \
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    (((pte_t *) (ptl0))[(i)].pfn << 12)
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#define GET_PTL2_ADDRESS_ARCH(ptl1, i)      (ptl1)
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#define GET_PTL2_ADDRESS_ARCH(ptl1, i) \
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    (ptl1)
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#define GET_PTL3_ADDRESS_ARCH(ptl2, i)      (ptl2)
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#define GET_PTL3_ADDRESS_ARCH(ptl2, i) \
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    (ptl2)
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#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     (((pte_t *) (ptl3))[(i)].pfn << 12)
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#define GET_FRAME_ADDRESS_ARCH(ptl3, i) \
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    (((pte_t *) (ptl3))[(i)].pfn << 12)
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- 
 
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/* Set PTE address accessors for each level. */
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#define SET_PTL0_ADDRESS_ARCH(ptl0)
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#define SET_PTL0_ADDRESS_ARCH(ptl0)
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#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a)   (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12)
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#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) \
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    (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12)
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#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
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#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
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#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
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#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
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#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a)  (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12)
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#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) \
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    (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12)
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- 
 
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/* Get PTE flags accessors for each level. */
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#define GET_PTL1_FLAGS_ARCH(ptl0, i) \
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#define GET_PTL1_FLAGS_ARCH(ptl0, i)        get_pt_flags((pte_t *) (ptl0), (index_t) (i))
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    get_pt_flags((pte_t *) (ptl0), (index_t) (i))
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#define GET_PTL2_FLAGS_ARCH(ptl1, i)        PAGE_PRESENT
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#define GET_PTL2_FLAGS_ARCH(ptl1, i) \
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    PAGE_PRESENT
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#define GET_PTL3_FLAGS_ARCH(ptl2, i)        PAGE_PRESENT
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#define GET_PTL3_FLAGS_ARCH(ptl2, i) \
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    PAGE_PRESENT
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#define GET_FRAME_FLAGS_ARCH(ptl3, i) \
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#define GET_FRAME_FLAGS_ARCH(ptl3, i)       get_pt_flags((pte_t *) (ptl3), (index_t) (i))
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    get_pt_flags((pte_t *) (ptl3), (index_t) (i))
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- 
 
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/* Set PTE flags accessors for each level. */
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#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) \
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#define SET_PTL1_FLAGS_ARCH(ptl0, i, x)     set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x))
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    set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x))
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#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
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#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
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#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
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#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
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#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) \
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#define SET_FRAME_FLAGS_ARCH(ptl3, i, x)    set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x))
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    set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x))
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- 
 
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/* Macros for querying the last-level PTEs. */
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#define PTE_VALID_ARCH(pte)         (*((uint32_t *) (pte)) != 0)
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#define PTE_VALID_ARCH(pte)         (*((uint32_t *) (pte)) != 0)
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#define PTE_PRESENT_ARCH(pte)           ((pte)->p != 0)
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#define PTE_PRESENT_ARCH(pte)           ((pte)->p != 0)
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#define PTE_GET_FRAME_ARCH(pte)         ((pte)->pfn << 12)
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#define PTE_GET_FRAME_ARCH(pte)         ((pte)->pfn << 12)
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#define PTE_WRITABLE_ARCH(pte)          1
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#define PTE_WRITABLE_ARCH(pte)          1
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#define PTE_EXECUTABLE_ARCH(pte)        1
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#define PTE_EXECUTABLE_ARCH(pte)        1
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static inline int get_pt_flags(pte_t *pt, index_t i)
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static inline int get_pt_flags(pte_t *pt, index_t i)
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{
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{
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    pte_t *p = &pt[i];
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    pte_t *p = &pt[i];
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    return (
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        (1 << PAGE_CACHEABLE_SHIFT) |
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    return ((1 << PAGE_CACHEABLE_SHIFT) |
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        ((!p->p) << PAGE_PRESENT_SHIFT) |
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        ((!p->p) << PAGE_PRESENT_SHIFT) |
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        (1 << PAGE_USER_SHIFT) |
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        (1 << PAGE_USER_SHIFT) |
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        (1 << PAGE_READ_SHIFT) |
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        (1 << PAGE_READ_SHIFT) |
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        (1 << PAGE_WRITE_SHIFT) |
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        (1 << PAGE_WRITE_SHIFT) |
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        (1 << PAGE_EXEC_SHIFT) |
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        (1 << PAGE_EXEC_SHIFT) |
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        (p->g << PAGE_GLOBAL_SHIFT)
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        (p->g << PAGE_GLOBAL_SHIFT));
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    );
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}
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}
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static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
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static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
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{
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{
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    pte_t *p = &pt[i];
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    pte_t *p = &pt[i];