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adding function which inserts entry into SMPT

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This commit is contained in:
Masamichi Takagi m-takagi@ab.jp.nec.com
2012-09-20 18:12:50 +09:00
parent bc4452457c
commit 9e8337b63d
1 changed files with 32 additions and 1 deletions
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33
kernel/mem.c
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@ -7,7 +7,8 @@
#include <aal/mm.h>
#include <aal/page_alloc.h>
#include <registers.h>
#include <sysdeps/knf/mic/micconst.h>
#include <sysdeps/knf/mic/micsboxdefine.h>
#include <cls.h>
static struct aal_page_allocator_desc *pa_allocator;
@ -169,6 +170,36 @@ void aal_mc_unmap_virtual(void *va, int npages, int free_physical)
aal_pagealloc_free(vmap_allocator, virt_to_phys(va), npages);
}
/* moved from aal_knc/manycore/knf/setup.c */
/*static*/ void *sbox_base = (void *)SBOX_BASE;
void sbox_write(int offset, unsigned int value)
{
*(volatile unsigned int *)(sbox_base + offset) = value;
}
unsigned int sbox_read(int offset)
{
return *(volatile unsigned int *)(sbox_base + offset);
}
/* insert entry into map which maps mic physical address to host physical address */
unsigned int free_bitmap_micpa = ((~(1ULL<<(NUM_SMPT_ENTRIES_IN_USE - NUM_SMPT_ENTRIES_MICPA)) - 1)&(1ULL << NUM_SMPT_ENTRIES_IN_USE - 1));
void aal_mc_map_micpa(unsigned long host_pa, unsigned long* mic_pa) {
int i;
for(i = NUM_SMPT_ENTRIES_IN_USE - 1; i >= NUM_SMPT_ENTRIES_IN_USE - NUM_SMPT_ENTRIES_MICPA; i--) {
if((free_bitmap_micpa >> i) & 1) {
free_bitmap_micpa &= ~(1ULL << i);
*mic_pa = MIC_SYSTEM_BASE + MIC_SYSTEM_PAGE_SIZE * i;
break;
}
}
kprintf("aal_mc_map_micpa,1,i=%d,host_pa=%lx,mic_pa=%llx\n", i, host_pa, *mic_pa);
if(i == NUM_SMPT_ENTRIES_IN_USE - NUM_SMPT_ENTRIES_MICPA - 1) { return 0; }
sbox_write(SBOX_SMPT00 + ((*mic_pa - MIC_SYSTEM_BASE) >> MIC_SYSTEM_PAGE_SHIFT) * 4, BUILD_SMPT(SNOOP_ON, host_pa >> MIC_SYSTEM_PAGE_SHIFT));
*mic_pa += (host_pa & (MIC_SYSTEM_PAGE_SIZE-1));
}
void mem_init(void)
{
page_allocator_init();