RDMA/hns: Support to query firmware version

Implement the ops named get_dev_fw_str to support ib_get_device_fw_str().

Link: https://lore.kernel.org/r/1615882161-53827-1-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 1a747f7..2b9e501 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -394,6 +394,19 @@ static void hns_roce_disassociate_ucontext(struct ib_ucontext *ibcontext)
 {
 }
 
+static void hns_roce_get_fw_ver(struct ib_device *device, char *str)
+{
+       u64 fw_ver = to_hr_dev(device)->caps.fw_ver;
+       unsigned int major, minor, sub_minor;
+
+       major = upper_32_bits(fw_ver);
+       minor = high_16_bits(lower_32_bits(fw_ver));
+       sub_minor = low_16_bits(fw_ver);
+
+       snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%04u", major, minor,
+                sub_minor);
+}
+
 static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
 {
        struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
@@ -409,6 +422,7 @@ static const struct ib_device_ops hns_roce_dev_ops = {
        .uverbs_abi_ver = 1,
        .uverbs_no_driver_id_binding = 1,
 
+       .get_dev_fw_str = hns_roce_get_fw_ver,
        .add_gid = hns_roce_add_gid,
        .alloc_pd = hns_roce_alloc_pd,
        .alloc_ucontext = hns_roce_alloc_ucontext,