static int __init hugetlb_setup_sz(char *str)
{
u64 tr_pages;
unsigned long long size;
if (ia64_pal_vm_page_size(&tr_pages, NULL) != 0)
/*
* shouldn't happen, but just in case.
*/
tr_pages = 0x15557000UL;
size = memparse(str, &str);
if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
size <= PAGE_SIZE ||
size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
printk(KERN_WARNING "Invalid huge page size specified\n");
return 1;
}
hpage_shift = __ffs(size);
/*
* boot cpu already executed ia64_mmu_init, and has HPAGE_SHIFT_DEFAULT
* override here with new page shift.
*/
ia64_set_rr(HPAGE_REGION_BASE, hpage_shift << 2);
return 0;
}
void __init
ia64_tlb_init (void)
{
ia64_ptce_info_t ptce_info;
unsigned long tr_pgbits;
long status;
if ((status = ia64_pal_vm_page_size(&tr_pgbits, &purge.mask)) != 0) {
printk(KERN_ERR "PAL_VM_PAGE_SIZE failed with status=%ld;"
"defaulting to architected purge page-sizes.\n", status);
purge.mask = 0x115557000;
}
purge.max_bits = ia64_fls(purge.mask);
ia64_get_ptce(&ptce_info);
local_cpu_data->ptce_base = ptce_info.base;
local_cpu_data->ptce_count[0] = ptce_info.count[0];
local_cpu_data->ptce_count[1] = ptce_info.count[1];
local_cpu_data->ptce_stride[0] = ptce_info.stride[0];
local_cpu_data->ptce_stride[1] = ptce_info.stride[1];
local_flush_tlb_all(); /* nuke left overs from bootstrapping... */
}
static int
vm_info(char *page)
{
char *p = page;
u64 tr_pages =0, vw_pages=0, tc_pages;
u64 attrib;
pal_vm_info_1_u_t vm_info_1;
pal_vm_info_2_u_t vm_info_2;
pal_tc_info_u_t tc_info;
ia64_ptce_info_t ptce;
const char *sep;
int i, j;
long status;
if ((status = ia64_pal_vm_summary(&vm_info_1, &vm_info_2)) !=0) {
printk(KERN_ERR "ia64_pal_vm_summary=%ld\n", status);
} else {
p += sprintf(p,
"Physical Address Space : %d bits\n"
"Virtual Address Space : %d bits\n"
"Protection Key Registers(PKR) : %d\n"
"Implemented bits in PKR.key : %d\n"
"Hash Tag ID : 0x%x\n"
"Size of RR.rid : %d\n"
"Max Purges : ",
vm_info_1.pal_vm_info_1_s.phys_add_size,
vm_info_2.pal_vm_info_2_s.impl_va_msb+1,
vm_info_1.pal_vm_info_1_s.max_pkr+1,
vm_info_1.pal_vm_info_1_s.key_size,
vm_info_1.pal_vm_info_1_s.hash_tag_id,
vm_info_2.pal_vm_info_2_s.rid_size);
if (vm_info_2.pal_vm_info_2_s.max_purges == PAL_MAX_PURGES)
p += sprintf(p, "unlimited\n");
else
p += sprintf(p, "%d\n",
vm_info_2.pal_vm_info_2_s.max_purges ?
vm_info_2.pal_vm_info_2_s.max_purges : 1);
}
if (ia64_pal_mem_attrib(&attrib) == 0) {
p += sprintf(p, "Supported memory attributes : ");
sep = "";
for (i = 0; i < 8; i++) {
if (attrib & (1 << i)) {
p += sprintf(p, "%s%s", sep, mem_attrib[i]);
sep = ", ";
}
}
p += sprintf(p, "\n");
}
if ((status = ia64_pal_vm_page_size(&tr_pages, &vw_pages)) !=0) {
printk(KERN_ERR "ia64_pal_vm_page_size=%ld\n", status);
} else {
p += sprintf(p,
"\nTLB walker : %simplemented\n"
"Number of DTR : %d\n"
"Number of ITR : %d\n"
"TLB insertable page sizes : ",
vm_info_1.pal_vm_info_1_s.vw ? "" : "not ",
vm_info_1.pal_vm_info_1_s.max_dtr_entry+1,
vm_info_1.pal_vm_info_1_s.max_itr_entry+1);
p = bitvector_process(p, tr_pages);
p += sprintf(p, "\nTLB purgeable page sizes : ");
p = bitvector_process(p, vw_pages);
}
if ((status=ia64_get_ptce(&ptce)) != 0) {
printk(KERN_ERR "ia64_get_ptce=%ld\n", status);
} else {
p += sprintf(p,
"\nPurge base address : 0x%016lx\n"
"Purge outer loop count : %d\n"
"Purge inner loop count : %d\n"
"Purge outer loop stride : %d\n"
"Purge inner loop stride : %d\n",
ptce.base, ptce.count[0], ptce.count[1],
ptce.stride[0], ptce.stride[1]);
p += sprintf(p,
"TC Levels : %d\n"
"Unique TC(s) : %d\n",
vm_info_1.pal_vm_info_1_s.num_tc_levels,
vm_info_1.pal_vm_info_1_s.max_unique_tcs);
for(i=0; i < vm_info_1.pal_vm_info_1_s.num_tc_levels; i++) {
for (j=2; j>0 ; j--) {
tc_pages = 0; /* just in case */
/* even without unification, some levels may not be present */
if ((status=ia64_pal_vm_info(i,j, &tc_info, &tc_pages)) != 0) {
continue;
}
p += sprintf(p,
"\n%s Translation Cache Level %d:\n"
"\tHash sets : %d\n"
"\tAssociativity : %d\n"
"\tNumber of entries : %d\n"
"\tFlags : ",
cache_types[j+tc_info.tc_unified], i+1,
tc_info.tc_num_sets,
tc_info.tc_associativity,
tc_info.tc_num_entries);
if (tc_info.tc_pf)
p += sprintf(p, "PreferredPageSizeOptimized ");
if (tc_info.tc_unified)
p += sprintf(p, "Unified ");
if (tc_info.tc_reduce_tr)
p += sprintf(p, "TCReduction");
p += sprintf(p, "\n\tSupported page sizes: ");
p = bitvector_process(p, tc_pages);
/* when unified date (j=2) is enough */
if (tc_info.tc_unified)
break;
}
}
}
p += sprintf(p, "\n");
return p - page;
}
