/* locks: must only be called with zfcp_data.config_sema taken */
int
zfcp_qdio_allocate_queues(struct zfcp_adapter *adapter)
{
int buffer_count;
int retval = 0;
buffer_count =
zfcp_qdio_buffers_enqueue(&(adapter->request_queue.buffer[0]),
QDIO_MAX_BUFFERS_PER_Q);
if (buffer_count < QDIO_MAX_BUFFERS_PER_Q) {
ZFCP_LOG_DEBUG("only %d QDIO buffers allocated for request "
"queue\n", buffer_count);
zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]),
buffer_count);
retval = -ENOMEM;
goto out;
}
buffer_count =
zfcp_qdio_buffers_enqueue(&(adapter->response_queue.buffer[0]),
QDIO_MAX_BUFFERS_PER_Q);
if (buffer_count < QDIO_MAX_BUFFERS_PER_Q) {
ZFCP_LOG_DEBUG("only %d QDIO buffers allocated for response "
"queue", buffer_count);
zfcp_qdio_buffers_dequeue(&(adapter->response_queue.buffer[0]),
buffer_count);
ZFCP_LOG_TRACE("freeing request_queue buffers\n");
zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]),
QDIO_MAX_BUFFERS_PER_Q);
retval = -ENOMEM;
goto out;
}
out:
return retval;
}
/**
* zfcp_qdio_allocate - allocate queue memory and initialize QDIO data
* @adapter: pointer to struct zfcp_adapter
* Returns: -ENOMEM on memory allocation error or return value from
* qdio_allocate
*/
int zfcp_qdio_allocate(struct zfcp_adapter *adapter)
{
struct qdio_initialize *init_data;
if (zfcp_qdio_buffers_enqueue(adapter->req_q.sbal) ||
zfcp_qdio_buffers_enqueue(adapter->resp_q.sbal))
return -ENOMEM;
init_data = &adapter->qdio_init_data;
init_data->cdev = adapter->ccw_device;
init_data->q_format = QDIO_ZFCP_QFMT;
memcpy(init_data->adapter_name, zfcp_get_busid_by_adapter(adapter), 8);
ASCEBC(init_data->adapter_name, 8);
init_data->qib_param_field_format = 0;
init_data->qib_param_field = NULL;
init_data->input_slib_elements = NULL;
init_data->output_slib_elements = NULL;
init_data->no_input_qs = 1;
init_data->no_output_qs = 1;
init_data->input_handler = zfcp_qdio_int_resp;
init_data->output_handler = zfcp_qdio_int_req;
init_data->int_parm = (unsigned long) adapter;
init_data->flags = QDIO_INBOUND_0COPY_SBALS |
QDIO_OUTBOUND_0COPY_SBALS | QDIO_USE_OUTBOUND_PCIS;
init_data->input_sbal_addr_array =
(void **) (adapter->resp_q.sbal);
init_data->output_sbal_addr_array =
(void **) (adapter->req_q.sbal);
return qdio_allocate(init_data);
}
/* locks: must only be called with zfcp_data.config_sema taken */
int
zfcp_qdio_allocate_queues(struct zfcp_adapter *adapter)
{
int ret;
ret = zfcp_qdio_buffers_enqueue(adapter->request_queue.buffer);
if (ret)
return ret;
return zfcp_qdio_buffers_enqueue(adapter->response_queue.buffer);
}
/**
* zfcp_qdio_allocate - allocate queue memory and initialize QDIO data
* @adapter: pointer to struct zfcp_adapter
* Returns: -ENOMEM on memory allocation error or return value from
* qdio_allocate
*/
static int zfcp_qdio_allocate(struct zfcp_qdio *qdio)
{
struct qdio_initialize init_data;
if (zfcp_qdio_buffers_enqueue(qdio->req_q.sbal) ||
zfcp_qdio_buffers_enqueue(qdio->resp_q.sbal))
return -ENOMEM;
zfcp_qdio_setup_init_data(&init_data, qdio);
return qdio_allocate(&init_data);
}
/**
* zfcp_qdio_allocate - allocate queue memory and initialize QDIO data
* @adapter: pointer to struct zfcp_adapter
* Returns: -ENOMEM on memory allocation error or return value from
* qdio_allocate
*/
static int zfcp_qdio_allocate(struct zfcp_qdio *qdio)
{
struct qdio_initialize init_data;
if (zfcp_qdio_buffers_enqueue(qdio->req_q) ||
zfcp_qdio_buffers_enqueue(qdio->res_q))
return -ENOMEM;
zfcp_qdio_setup_init_data(&init_data, qdio);
init_waitqueue_head(&qdio->req_q_wq);
return qdio_allocate(&init_data);
}
