Subversion Repositories HelenOS

Rev

Rev 2009 | Rev 2089 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2009 Rev 2048
Line 39... Line 39...
39 
#include <arch/types.h>
 39 
#include <arch/types.h>
40 
#include <typedefs.h>
 40 
#include <typedefs.h>
41 
#include <macros.h>
 41 
#include <macros.h>
42 
#include <debug.h>
 42 
#include <debug.h>
43 
 
 43 
 
44 
#define TSB_INDEX_MASK      ((1<<(21+1+TSB_SIZE-PAGE_WIDTH))-1)
 44 
#define TSB_INDEX_MASK      ((1 << (21 + 1 + TSB_SIZE - PAGE_WIDTH)) - 1)
45 
 
 45 
 
46 
/** Invalidate portion of TSB.
 46 
/** Invalidate portion of TSB.
47 
 *
 47 
 *
48 
 * We assume that the address space is already locked.
 48 
 * We assume that the address space is already locked. Note that respective
49 
 * Note that respective portions of both TSBs
 - 
 
50 
 * are invalidated at a time.
 49 
 * portions of both TSBs are invalidated at a time.
51 
 *
 50 
 *
52 
 * @param as Address space.
 51 
 * @param as Address space.
53 
 * @param page First page to invalidate in TSB.
 52 
 * @param page First page to invalidate in TSB.
54 
 * @param pages Number of pages to invalidate.
 53 
 * @param pages Number of pages to invalidate. Value of (count_t) -1 means the
55 
 *      Value of (count_t) -1 means the whole TSB.
 54 
 *  whole TSB.
56 
 */
 55 
 */
57 
void tsb_invalidate(as_t *as, uintptr_t page, count_t pages)
 56 
void tsb_invalidate(as_t *as, uintptr_t page, count_t pages)
58 
{
 57 
{
59 
    index_t i0, i;
 58 
    index_t i0, i;
60 
    count_t cnt;
 59 
    count_t cnt;
Line 63... Line 62...
63 
   
 62 
   
64 
    i0 = (page >> PAGE_WIDTH) & TSB_INDEX_MASK;
 63 
    i0 = (page >> PAGE_WIDTH) & TSB_INDEX_MASK;
65 
    cnt = min(pages, ITSB_ENTRY_COUNT);
 64 
    cnt = min(pages, ITSB_ENTRY_COUNT);
66 
   
 65 
   
67 
    for (i = 0; i < cnt; i++) {
 66 
    for (i = 0; i < cnt; i++) {
68 
        as->arch.itsb[(i0 + i) & (ITSB_ENTRY_COUNT-1)].tag.invalid = true;
 67 
        as->arch.itsb[(i0 + i) & (ITSB_ENTRY_COUNT - 1)].tag.invalid =
- 
 
 68 
            true;
69 
        as->arch.dtsb[(i0 + i) & (DTSB_ENTRY_COUNT-1)].tag.invalid = true;
 69 
        as->arch.dtsb[(i0 + i) & (DTSB_ENTRY_COUNT - 1)].tag.invalid =
- 
 
 70 
            true;
70 
    }
 71 
    }
71 
}
 72 
}
72 
 
 73 
 
73 
/** Copy software PTE to ITSB.
 74 
/** Copy software PTE to ITSB.
74 
 *
 75 
 *