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lib: sbi_tlb: Use sbi_hartmask in sbi_tlb_info

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Instead of using single ulong as source mask for sbi_tlb_info,
we use sbi_hartmask. This way sbi_tlb_info can easily scale
for large number of HARTs.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-03-04 14:21:42 +05:30
committed by Anup Patel
parent a4a6a81b7d
commit d96316481d
2 changed files with 10 additions and 12 deletions
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17
lib/sbi/sbi_tlb.c
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@@ -190,17 +190,14 @@ static void sbi_tlb_local_flush(struct sbi_tlb_info *tinfo)
static void sbi_tlb_entry_process(struct sbi_scratch *scratch,
struct sbi_tlb_info *tinfo)
{
u32 i;
u64 m;
u32 rhartid;
struct sbi_scratch *rscratch = NULL;
unsigned long *rtlb_sync = NULL;
sbi_tlb_local_flush(tinfo);
for (i = 0, m = tinfo->shart_mask; m; i++, m >>= 1) {
if (!(m & 1UL))
continue;
rscratch = sbi_hart_id_to_scratch(scratch, i);
sbi_hartmask_for_each_hart(rhartid, &tinfo->smask) {
rscratch = sbi_hart_id_to_scratch(scratch, rhartid);
rtlb_sync = sbi_scratch_offset_ptr(rscratch, tlb_sync_off);
while (atomic_raw_xchg_ulong(rtlb_sync, 1)) ;
}
@@ -263,11 +260,11 @@ static inline int __sbi_tlb_range_check(struct sbi_tlb_info *curr,
if (next->start <= curr->start && next_end > curr_end) {
curr->start = next->start;
curr->size = next->size;
curr->shart_mask = curr->shart_mask | next->shart_mask;
ret = SBI_FIFO_UPDATED;
sbi_hartmask_or(&curr->smask, &curr->smask, &next->smask);
ret = SBI_FIFO_UPDATED;
} else if (next->start >= curr->start && next_end <= curr_end) {
curr->shart_mask = curr->shart_mask | next->shart_mask;
ret = SBI_FIFO_SKIP;
sbi_hartmask_or(&curr->smask, &curr->smask, &next->smask);
ret = SBI_FIFO_SKIP;
}
return ret;