diff options
author | Wei Hu (Xavier) <xavier.huwei@huawei.com> | 2016-11-23 19:41:00 +0000 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2016-12-03 14:20:42 -0500 |
commit | 8f3e9f3ea0871a988ec9540a4cde48a20c1cb98b (patch) | |
tree | 42e0fc4f212d50a1487a2efd09d19c2099b56a2e /drivers/infiniband/hw/hns/hns_roce_hw_v1.h | |
parent | 9eefa953f475897636f9290d833e45009d58a55d (diff) |
IB/hns: Add code for refreshing CQ CI using TPTR
This patch added the code for refreshing CQ CI using TPTR in hip06
SoC.
We will send a doorbell to hardware for refreshing CQ CI when user
succeed to poll a cqe. But it will be failed if the doorbell has
been blocked. So hardware will read a special buffer called TPTR
to get the lastest CI value when the cq is almost full.
This patch support the special CI buffer as follows:
a) Alloc the memory for TPTR in the hns_roce_tptr_init function and
free it in hns_roce_tptr_free function, these two functions will
be called in probe function and in the remove function.
b) Add the code for computing offset(every cq need 2 bytes) and
write the dma addr to every cq context to notice hardware in the
function named hns_roce_v1_write_cqc.
c) Add code for mapping TPTR buffer to user space in function named
hns_roce_mmap. The mapping distinguish TPTR and UAR of user mode
by vm_pgoff(0: UAR, 1: TPTR, others:invaild) in hip06.
d) Alloc the code for refreshing CQ CI using TPTR in the function
named hns_roce_v1_poll_cq.
e) Add some variable definitions to the related structure.
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Dongdong Huang(Donald) <hdd.huang@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_hw_v1.h')
-rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v1.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h index 2e1878bf4836..6004c7f39542 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h @@ -104,6 +104,10 @@ #define HNS_ROCE_BT_RSV_BUF_SIZE (1 << 17) +#define HNS_ROCE_V1_TPTR_ENTRY_SIZE 2 +#define HNS_ROCE_V1_TPTR_BUF_SIZE \ + (HNS_ROCE_V1_TPTR_ENTRY_SIZE * HNS_ROCE_V1_MAX_CQ_NUM) + #define HNS_ROCE_ODB_POLL_MODE 0 #define HNS_ROCE_SDB_NORMAL_MODE 0 @@ -983,10 +987,15 @@ struct hns_roce_bt_table { struct hns_roce_buf_list cqc_buf; }; +struct hns_roce_tptr_table { + struct hns_roce_buf_list tptr_buf; +}; + struct hns_roce_v1_priv { struct hns_roce_db_table db_table; struct hns_roce_raq_table raq_table; struct hns_roce_bt_table bt_table; + struct hns_roce_tptr_table tptr_table; }; int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset); |