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RDMA/hns: Unify the calculation for hem index in hip08

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The calculation of hem index are different between hns_roce_table_get
and hns_roce_table_find. When the table chunk size of TRRL is not
divisible by object size, it will faile to find the trrl table.

This patch is to update the calculation of the hem index in the
hns_roce_table_find to the same as which in the hns_roce_table_get.

Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
oulijun 2017-11-10 16:55:52 +08:00 committed by Doug Ledford
parent e8d1853357
commit 0203b14c4f
1 changed files with 6 additions and 4 deletions
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10
drivers/infiniband/hw/hns/hns_roce_hem.c
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@ -724,7 +724,8 @@ void *hns_roce_table_find(struct hns_roce_dev *hr_dev,
struct hns_roce_hem *hem;
struct page *page = NULL;
unsigned long mhop_obj = obj;
unsigned long idx;
unsigned long obj_per_chunk;
unsigned long idx_offset;
int offset, dma_offset;
int i, j;
u32 hem_idx = 0;
@ -735,9 +736,10 @@ void *hns_roce_table_find(struct hns_roce_dev *hr_dev,
mutex_lock(&table->mutex);
if (!hns_roce_check_whether_mhop(hr_dev, table->type)) {
idx = (obj & (table->num_obj - 1)) * table->obj_size;
hem = table->hem[idx / table->table_chunk_size];
dma_offset = offset = idx % table->table_chunk_size;
obj_per_chunk = table->table_chunk_size / table->obj_size;
hem = table->hem[(obj & (table->num_obj - 1)) / obj_per_chunk];
idx_offset = (obj & (table->num_obj - 1)) % obj_per_chunk;
dma_offset = offset = idx_offset * table->obj_size;
} else {
hns_roce_calc_hem_mhop(hr_dev, table, &mhop_obj, &mhop);
/* mtt mhop */