Commit cb7a94c9 authored by Wei Hu(Xavier)'s avatar Wei Hu(Xavier) Committed by Doug Ledford

RDMA/hns: Add reset process for RoCE in hip08

This patch added reset process for RoCE in hip08.
Signed-off-by: default avatarWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent f3ca0ab1
......@@ -176,6 +176,9 @@ int hns_roce_cmd_mbox(struct hns_roce_dev *hr_dev, u64 in_param, u64 out_param,
unsigned long in_modifier, u8 op_modifier, u16 op,
unsigned long timeout)
{
if (hr_dev->is_reset)
return 0;
if (hr_dev->cmd.use_events)
return hns_roce_cmd_mbox_wait(hr_dev, in_param, out_param,
in_modifier, op_modifier, op,
......
......@@ -774,6 +774,8 @@ struct hns_roce_dev {
const char *irq_names[HNS_ROCE_MAX_IRQ_NUM];
spinlock_t sm_lock;
spinlock_t bt_cmd_lock;
bool active;
bool is_reset;
struct hns_roce_ib_iboe iboe;
struct list_head pgdir_list;
......
......@@ -775,6 +775,9 @@ static int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
int ret = 0;
int ntc;
if (hr_dev->is_reset)
return 0;
spin_lock_bh(&csq->lock);
if (num > hns_roce_cmq_space(csq)) {
......@@ -4804,14 +4807,87 @@ static void hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
{
struct hns_roce_dev *hr_dev = (struct hns_roce_dev *)handle->priv;
if (!hr_dev)
return;
hns_roce_exit(hr_dev);
kfree(hr_dev->priv);
ib_dealloc_device(&hr_dev->ib_dev);
}
static int hns_roce_hw_v2_reset_notify_down(struct hnae3_handle *handle)
{
struct hns_roce_dev *hr_dev = (struct hns_roce_dev *)handle->priv;
struct ib_event event;
if (!hr_dev) {
dev_err(&handle->pdev->dev,
"Input parameter handle->priv is NULL!\n");
return -EINVAL;
}
hr_dev->active = false;
hr_dev->is_reset = true;
event.event = IB_EVENT_DEVICE_FATAL;
event.device = &hr_dev->ib_dev;
event.element.port_num = 1;
ib_dispatch_event(&event);
return 0;
}
static int hns_roce_hw_v2_reset_notify_init(struct hnae3_handle *handle)
{
int ret;
ret = hns_roce_hw_v2_init_instance(handle);
if (ret) {
/* when reset notify type is HNAE3_INIT_CLIENT In reset notify
* callback function, RoCE Engine reinitialize. If RoCE reinit
* failed, we should inform NIC driver.
*/
handle->priv = NULL;
dev_err(&handle->pdev->dev,
"In reset process RoCE reinit failed %d.\n", ret);
}
return ret;
}
static int hns_roce_hw_v2_reset_notify_uninit(struct hnae3_handle *handle)
{
msleep(100);
hns_roce_hw_v2_uninit_instance(handle, false);
return 0;
}
static int hns_roce_hw_v2_reset_notify(struct hnae3_handle *handle,
enum hnae3_reset_notify_type type)
{
int ret = 0;
switch (type) {
case HNAE3_DOWN_CLIENT:
ret = hns_roce_hw_v2_reset_notify_down(handle);
break;
case HNAE3_INIT_CLIENT:
ret = hns_roce_hw_v2_reset_notify_init(handle);
break;
case HNAE3_UNINIT_CLIENT:
ret = hns_roce_hw_v2_reset_notify_uninit(handle);
break;
default:
break;
}
return ret;
}
static const struct hnae3_client_ops hns_roce_hw_v2_ops = {
.init_instance = hns_roce_hw_v2_init_instance,
.uninit_instance = hns_roce_hw_v2_uninit_instance,
.reset_notify = hns_roce_hw_v2_reset_notify,
};
static struct hnae3_client hns_roce_hw_v2_client = {
......
......@@ -332,6 +332,9 @@ static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev,
struct hns_roce_ib_alloc_ucontext_resp resp = {};
struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
if (!hr_dev->active)
return ERR_PTR(-EAGAIN);
resp.qp_tab_size = hr_dev->caps.num_qps;
context = kmalloc(sizeof(*context), GFP_KERNEL);
......@@ -425,6 +428,7 @@ static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
{
struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
hr_dev->active = false;
unregister_netdevice_notifier(&iboe->nb);
ib_unregister_device(&hr_dev->ib_dev);
}
......@@ -536,6 +540,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
goto error_failed_setup_mtu_mac;
}
hr_dev->active = true;
return 0;
error_failed_setup_mtu_mac:
......@@ -728,6 +733,7 @@ int hns_roce_init(struct hns_roce_dev *hr_dev)
return ret;
}
}
hr_dev->is_reset = false;
if (hr_dev->hw->cmq_init) {
ret = hr_dev->hw->cmq_init(hr_dev);
......@@ -827,6 +833,7 @@ EXPORT_SYMBOL_GPL(hns_roce_init);
void hns_roce_exit(struct hns_roce_dev *hr_dev)
{
hns_roce_unregister_device(hr_dev);
if (hr_dev->hw->hw_exit)
hr_dev->hw->hw_exit(hr_dev);
hns_roce_cleanup_bitmap(hr_dev);
......
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