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add a function which frees SMPT full/empty bitmap, aal_mc_free_micpa

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Masamichi Takagi m-takagi@ab.jp.nec.com
2012-11-04 18:20:13 +09:00
parent 2c74d1677a
commit 7538937507
1 changed files with 16 additions and 1 deletions
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17
kernel/mem.c
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@@ -234,11 +234,26 @@ void aal_mc_map_micpa(unsigned long host_pa, unsigned long* mic_pa) {
} }
} }
dkprintf("aal_mc_map_micpa,1,i=%d,host_pa=%lx,mic_pa=%llx\n", i, host_pa, *mic_pa); dkprintf("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; } if(i == NUM_SMPT_ENTRIES_IN_USE - NUM_SMPT_ENTRIES_MICPA - 1) {
*mic_pa = 0;
return;
}
sbox_write(SBOX_SMPT00 + ((*mic_pa - MIC_SYSTEM_BASE) >> MIC_SYSTEM_PAGE_SHIFT) * 4, BUILD_SMPT(SNOOP_ON, host_pa >> MIC_SYSTEM_PAGE_SHIFT)); 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)); *mic_pa += (host_pa & (MIC_SYSTEM_PAGE_SIZE-1));
} }
int aal_mc_free_micpa(unsigned long mic_pa) {
int smpt_ndx = (mic_pa - MIC_SYSTEM_BASE) >> MIC_SYSTEM_PAGE_SHIFT);
if(smpt_ndx >= NUM_SMPT_ENTRIES_IN_USE ||
smpt_ndx < NUM_SMPT_ENTRIES_IN_USE - NUM_SMPT_ENTRIES_MICPA) {
dkprintf("aal_mc_free_micpa,mic_pa=%llx,out of range\n", host_pa);
return -1;
}
free_bitmap_micpa |= (1ULL << smpt_ndx);
dkprintf("aal_mc_free_micpa,index=%d,freed\n", smpt_ndx);
return 0;
}
void mem_init(void) void mem_init(void)
{ {
page_allocator_init(); page_allocator_init();