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qedr: Add events support and register IB device
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Add error handling support.
Register ib device with ib stack.

Signed-off-by: Rajesh Borundia <[email protected]>
Signed-off-by: Ram Amrani <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
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@dledford
Ram Amrani authored and dledford committed Oct 14, 2016
1 parent 0488677 commit 993d1b5
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Showing 3 changed files with 158 additions and 2 deletions.
114 changes: 112 additions & 2 deletions drivers/infiniband/hw/qedr/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -79,10 +79,25 @@ static void qedr_get_dev_fw_str(struct ib_device *ibdev, char *str,
(fw_ver >> 8) & 0xFF, fw_ver & 0xFF);
}

static struct net_device *qedr_get_netdev(struct ib_device *dev, u8 port_num)
{
struct qedr_dev *qdev;

qdev = get_qedr_dev(dev);
dev_hold(qdev->ndev);

/* The HW vendor's device driver must guarantee
* that this function returns NULL before the net device reaches
* NETDEV_UNREGISTER_FINAL state.
*/
return qdev->ndev;
}

static int qedr_register_device(struct qedr_dev *dev)
{
strlcpy(dev->ibdev.name, "qedr%d", IB_DEVICE_NAME_MAX);

dev->ibdev.node_guid = dev->attr.node_guid;
memcpy(dev->ibdev.node_desc, QEDR_NODE_DESC, sizeof(QEDR_NODE_DESC));
dev->ibdev.owner = THIS_MODULE;
dev->ibdev.uverbs_abi_ver = QEDR_ABI_VERSION;
Expand Down Expand Up @@ -151,12 +166,16 @@ static int qedr_register_device(struct qedr_dev *dev)
dev->ibdev.post_send = qedr_post_send;
dev->ibdev.post_recv = qedr_post_recv;

dev->ibdev.process_mad = qedr_process_mad;
dev->ibdev.get_port_immutable = qedr_port_immutable;
dev->ibdev.get_netdev = qedr_get_netdev;

dev->ibdev.dma_device = &dev->pdev->dev;

dev->ibdev.get_link_layer = qedr_link_layer;
dev->ibdev.get_dev_fw_str = qedr_get_dev_fw_str;

return 0;
return ib_register_device(&dev->ibdev, NULL);
}

/* This function allocates fast-path status block memory */
Expand Down Expand Up @@ -557,6 +576,92 @@ static int qedr_set_device_attr(struct qedr_dev *dev)
return 0;
}

void qedr_unaffiliated_event(void *context,
u8 event_code)
{
pr_err("unaffiliated event not implemented yet\n");
}

void qedr_affiliated_event(void *context, u8 e_code, void *fw_handle)
{
#define EVENT_TYPE_NOT_DEFINED 0
#define EVENT_TYPE_CQ 1
#define EVENT_TYPE_QP 2
struct qedr_dev *dev = (struct qedr_dev *)context;
union event_ring_data *data = fw_handle;
u64 roce_handle64 = ((u64)data->roce_handle.hi << 32) +
data->roce_handle.lo;
u8 event_type = EVENT_TYPE_NOT_DEFINED;
struct ib_event event;
struct ib_cq *ibcq;
struct ib_qp *ibqp;
struct qedr_cq *cq;
struct qedr_qp *qp;

switch (e_code) {
case ROCE_ASYNC_EVENT_CQ_OVERFLOW_ERR:
event.event = IB_EVENT_CQ_ERR;
event_type = EVENT_TYPE_CQ;
break;
case ROCE_ASYNC_EVENT_SQ_DRAINED:
event.event = IB_EVENT_SQ_DRAINED;
event_type = EVENT_TYPE_QP;
break;
case ROCE_ASYNC_EVENT_QP_CATASTROPHIC_ERR:
event.event = IB_EVENT_QP_FATAL;
event_type = EVENT_TYPE_QP;
break;
case ROCE_ASYNC_EVENT_LOCAL_INVALID_REQUEST_ERR:
event.event = IB_EVENT_QP_REQ_ERR;
event_type = EVENT_TYPE_QP;
break;
case ROCE_ASYNC_EVENT_LOCAL_ACCESS_ERR:
event.event = IB_EVENT_QP_ACCESS_ERR;
event_type = EVENT_TYPE_QP;
break;
default:
DP_ERR(dev, "unsupported event %d on handle=%llx\n", e_code,
roce_handle64);
}

switch (event_type) {
case EVENT_TYPE_CQ:
cq = (struct qedr_cq *)(uintptr_t)roce_handle64;
if (cq) {
ibcq = &cq->ibcq;
if (ibcq->event_handler) {
event.device = ibcq->device;
event.element.cq = ibcq;
ibcq->event_handler(&event, ibcq->cq_context);
}
} else {
WARN(1,
"Error: CQ event with NULL pointer ibcq. Handle=%llx\n",
roce_handle64);
}
DP_ERR(dev, "CQ event %d on hanlde %p\n", e_code, cq);
break;
case EVENT_TYPE_QP:
qp = (struct qedr_qp *)(uintptr_t)roce_handle64;
if (qp) {
ibqp = &qp->ibqp;
if (ibqp->event_handler) {
event.device = ibqp->device;
event.element.qp = ibqp;
ibqp->event_handler(&event, ibqp->qp_context);
}
} else {
WARN(1,
"Error: QP event with NULL pointer ibqp. Handle=%llx\n",
roce_handle64);
}
DP_ERR(dev, "QP event %d on hanlde %p\n", e_code, qp);
break;
default:
break;
}
}

static int qedr_init_hw(struct qedr_dev *dev)
{
struct qed_rdma_add_user_out_params out_params;
Expand Down Expand Up @@ -585,6 +690,8 @@ static int qedr_init_hw(struct qedr_dev *dev)
cur_pbl->pbl_ptr = (u64)p_phys_table;
}

events.affiliated_event = qedr_affiliated_event;
events.unaffiliated_event = qedr_unaffiliated_event;
events.context = dev;

in_params->events = &events;
Expand Down Expand Up @@ -683,11 +790,13 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,

for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
if (device_create_file(&dev->ibdev.dev, qedr_attributes[i]))
goto reg_err;
goto sysfs_err;

DP_DEBUG(dev, QEDR_MSG_INIT, "qedr driver loaded successfully\n");
return dev;

sysfs_err:
ib_unregister_device(&dev->ibdev);
reg_err:
qedr_sync_free_irqs(dev);
irq_err:
Expand All @@ -707,6 +816,7 @@ static void qedr_remove(struct qedr_dev *dev)
* of the registered clients.
*/
qedr_remove_sysfiles(dev);
ib_unregister_device(&dev->ibdev);

qedr_stop_hw(dev);
qedr_sync_free_irqs(dev);
Expand Down
37 changes: 37 additions & 0 deletions drivers/infiniband/hw/qedr/verbs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3508,3 +3508,40 @@ int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
spin_unlock_irqrestore(&cq->cq_lock, flags);
return done;
}

int qedr_process_mad(struct ib_device *ibdev, int process_mad_flags,
u8 port_num,
const struct ib_wc *in_wc,
const struct ib_grh *in_grh,
const struct ib_mad_hdr *mad_hdr,
size_t in_mad_size, struct ib_mad_hdr *out_mad,
size_t *out_mad_size, u16 *out_mad_pkey_index)
{
struct qedr_dev *dev = get_qedr_dev(ibdev);

DP_DEBUG(dev, QEDR_MSG_GSI,
"QEDR_PROCESS_MAD in_mad %x %x %x %x %x %x %x %x\n",
mad_hdr->attr_id, mad_hdr->base_version, mad_hdr->attr_mod,
mad_hdr->class_specific, mad_hdr->class_version,
mad_hdr->method, mad_hdr->mgmt_class, mad_hdr->status);
return IB_MAD_RESULT_SUCCESS;
}

int qedr_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
int err;

err = qedr_query_port(ibdev, port_num, &attr);
if (err)
return err;

immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;

return 0;
}
9 changes: 9 additions & 0 deletions drivers/infiniband/hw/qedr/verbs.h
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Original file line number Diff line number Diff line change
Expand Up @@ -89,4 +89,13 @@ int qedr_post_send(struct ib_qp *, struct ib_send_wr *,
struct ib_send_wr **bad_wr);
int qedr_post_recv(struct ib_qp *, struct ib_recv_wr *,
struct ib_recv_wr **bad_wr);
int qedr_process_mad(struct ib_device *ibdev, int process_mad_flags,
u8 port_num, const struct ib_wc *in_wc,
const struct ib_grh *in_grh,
const struct ib_mad_hdr *in_mad,
size_t in_mad_size, struct ib_mad_hdr *out_mad,
size_t *out_mad_size, u16 *out_mad_pkey_index);

int qedr_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable);
#endif

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